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- moved most of the OpenGL backend to 'common'.

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A few things are yet to do, because they still need some changes.
This commit is contained in:
Christoph Oelckers 2020-04-26 14:44:19 +02:00
commit 02832297ff
26 changed files with 216 additions and 220 deletions
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266
src/rendering/gl/renderer/gl_postprocess.cpp
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/*
** Postprocessing framework
** Copyright (c) 2016-2020 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
*/
#include "gl_system.h"
#include "m_png.h"
#include "gl/system/gl_buffers.h"
#include "gl/system/gl_framebuffer.h"
#include "gl/system/gl_debug.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_postprocessstate.h"
#include "gl/shaders/gl_shaderprogram.h"
#include "hwrenderer/postprocessing/hw_postprocess.h"
#include "hwrenderer/postprocessing/hw_postprocess_cvars.h"
#include "flatvertices.h"
#include "r_videoscale.h"
#include "v_video.h"
#include "templates.h"
#include "hw_vrmodes.h"
extern bool vid_hdr_active;
CVAR(Int, gl_dither_bpc, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
namespace OpenGLRenderer
{
void FGLRenderer::RenderScreenQuad()
{
auto buffer = static_cast<GLVertexBuffer *>(screen->mVertexData->GetBufferObjects().first);
buffer->Bind(nullptr);
glDrawArrays(GL_TRIANGLE_STRIP, FFlatVertexBuffer::PRESENT_INDEX, 4);
}
void FGLRenderer::PostProcessScene(int fixedcm, const std::function<void()> &afterBloomDrawEndScene2D)
{
int sceneWidth = mBuffers->GetSceneWidth();
int sceneHeight = mBuffers->GetSceneHeight();
GLPPRenderState renderstate(mBuffers);
hw_postprocess.Pass1(&renderstate, fixedcm, sceneWidth, sceneHeight);
mBuffers->BindCurrentFB();
if (afterBloomDrawEndScene2D) afterBloomDrawEndScene2D();
hw_postprocess.Pass2(&renderstate, fixedcm, sceneWidth, sceneHeight);
}
//-----------------------------------------------------------------------------
//
// Adds ambient occlusion to the scene
//
//-----------------------------------------------------------------------------
void FGLRenderer::AmbientOccludeScene(float m5)
{
int sceneWidth = mBuffers->GetSceneWidth();
int sceneHeight = mBuffers->GetSceneHeight();
GLPPRenderState renderstate(mBuffers);
hw_postprocess.ssao.Render(&renderstate, m5, sceneWidth, sceneHeight);
}
void FGLRenderer::BlurScene(float gameinfobluramount)
{
int sceneWidth = mBuffers->GetSceneWidth();
int sceneHeight = mBuffers->GetSceneHeight();
GLPPRenderState renderstate(mBuffers);
auto vrmode = VRMode::GetVRMode(true);
int eyeCount = vrmode->mEyeCount;
for (int i = 0; i < eyeCount; ++i)
{
hw_postprocess.bloom.RenderBlur(&renderstate, sceneWidth, sceneHeight, gameinfobluramount);
if (eyeCount - i > 1) mBuffers->NextEye(eyeCount);
}
}
void FGLRenderer::ClearTonemapPalette()
{
hw_postprocess.tonemap.ClearTonemapPalette();
}
//-----------------------------------------------------------------------------
//
// Copies the rendered screen to its final destination
//
//-----------------------------------------------------------------------------
void FGLRenderer::Flush()
{
auto vrmode = VRMode::GetVRMode(true);
if (vrmode->mEyeCount == 1)
{
CopyToBackbuffer(nullptr, true);
}
else
{
// Render 2D to eye textures
int eyeCount = vrmode->mEyeCount;
for (int eye_ix = 0; eye_ix < eyeCount; ++eye_ix)
{
screen->Draw2D();
if (eyeCount - eye_ix > 1)
mBuffers->NextEye(eyeCount);
}
screen->Clear2D();
FGLPostProcessState savedState;
FGLDebug::PushGroup("PresentEyes");
// Note: This here is the ONLY place in the entire engine where the OpenGL dependent parts of the Stereo3D code need to be dealt with.
// There's absolutely no need to create a overly complex class hierarchy for just this.
PresentStereo();
FGLDebug::PopGroup();
}
}
//-----------------------------------------------------------------------------
//
// Gamma correct while copying to frame buffer
//
//-----------------------------------------------------------------------------
void FGLRenderer::CopyToBackbuffer(const IntRect *bounds, bool applyGamma)
{
screen->Draw2D(); // draw all pending 2D stuff before copying the buffer
screen->Clear2D();
GLPPRenderState renderstate(mBuffers);
hw_postprocess.customShaders.Run(&renderstate, "screen");
FGLDebug::PushGroup("CopyToBackbuffer");
FGLPostProcessState savedState;
savedState.SaveTextureBindings(2);
mBuffers->BindOutputFB();
IntRect box;
if (bounds)
{
box = *bounds;
}
else
{
ClearBorders();
box = screen->mOutputLetterbox;
}
mBuffers->BindCurrentTexture(0);
DrawPresentTexture(box, applyGamma);
FGLDebug::PopGroup();
}
void FGLRenderer::DrawPresentTexture(const IntRect &box, bool applyGamma)
{
glViewport(box.left, box.top, box.width, box.height);
mBuffers->BindDitherTexture(1);
glActiveTexture(GL_TEXTURE0);
if (ViewportLinearScale())
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
else
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
mPresentShader->Bind();
if (!applyGamma || framebuffer->IsHWGammaActive())
{
mPresentShader->Uniforms->InvGamma = 1.0f;
mPresentShader->Uniforms->Contrast = 1.0f;
mPresentShader->Uniforms->Brightness = 0.0f;
mPresentShader->Uniforms->Saturation = 1.0f;
}
else
{
mPresentShader->Uniforms->InvGamma = 1.0f / clamp<float>(vid_gamma, 0.1f, 4.f);
mPresentShader->Uniforms->Contrast = clamp<float>(vid_contrast, 0.1f, 3.f);
mPresentShader->Uniforms->Brightness = clamp<float>(vid_brightness, -0.8f, 0.8f);
mPresentShader->Uniforms->Saturation = clamp<float>(vid_saturation, -15.0f, 15.f);
mPresentShader->Uniforms->GrayFormula = static_cast<int>(gl_satformula);
}
if (vid_hdr_active && framebuffer->IsFullscreen())
{
// Full screen exclusive mode treats a rgba16f frame buffer as linear.
// It probably will eventually in desktop mode too, but the DWM doesn't seem to support that.
mPresentShader->Uniforms->HdrMode = 1;
mPresentShader->Uniforms->ColorScale = (gl_dither_bpc == -1) ? 1023.0f : (float)((1 << gl_dither_bpc) - 1);
}
else
{
mPresentShader->Uniforms->HdrMode = 0;
mPresentShader->Uniforms->ColorScale = (gl_dither_bpc == -1) ? 255.0f : (float)((1 << gl_dither_bpc) - 1);
}
mPresentShader->Uniforms->Scale = { screen->mScreenViewport.width / (float)mBuffers->GetWidth(), screen->mScreenViewport.height / (float)mBuffers->GetHeight() };
mPresentShader->Uniforms->Offset = { 0.0f, 0.0f };
mPresentShader->Uniforms.SetData();
static_cast<GLDataBuffer*>(mPresentShader->Uniforms.GetBuffer())->BindBase();
RenderScreenQuad();
}
//-----------------------------------------------------------------------------
//
// Fills the black bars around the screen letterbox
//
//-----------------------------------------------------------------------------
void FGLRenderer::ClearBorders()
{
const auto &box = screen->mOutputLetterbox;
int clientWidth = framebuffer->GetClientWidth();
int clientHeight = framebuffer->GetClientHeight();
if (clientWidth == 0 || clientHeight == 0)
return;
glViewport(0, 0, clientWidth, clientHeight);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glEnable(GL_SCISSOR_TEST);
if (box.top > 0)
{
glScissor(0, 0, clientWidth, box.top);
glClear(GL_COLOR_BUFFER_BIT);
}
if (clientHeight - box.top - box.height > 0)
{
glScissor(0, box.top + box.height, clientWidth, clientHeight - box.top - box.height);
glClear(GL_COLOR_BUFFER_BIT);
}
if (box.left > 0)
{
glScissor(0, box.top, box.left, box.height);
glClear(GL_COLOR_BUFFER_BIT);
}
if (clientWidth - box.left - box.width > 0)
{
glScissor(box.left + box.width, box.top, clientWidth - box.left - box.width, box.height);
glClear(GL_COLOR_BUFFER_BIT);
}
glDisable(GL_SCISSOR_TEST);
}
}

134
src/rendering/gl/renderer/gl_postprocessstate.cpp
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@ -1,134 +0,0 @@
/*
** Postprocessing framework
** Copyright (c) 2016-2020 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
*/
#include "templates.h"
#include "gl_system.h"
#include "gl_interface.h"
#include "gl/renderer/gl_postprocessstate.h"
namespace OpenGLRenderer
{
//-----------------------------------------------------------------------------
//
// Saves state modified by post processing shaders
//
//-----------------------------------------------------------------------------
FGLPostProcessState::FGLPostProcessState()
{
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTex);
glActiveTexture(GL_TEXTURE0);
SaveTextureBindings(1);
glGetBooleanv(GL_BLEND, &blendEnabled);
glGetBooleanv(GL_SCISSOR_TEST, &scissorEnabled);
glGetBooleanv(GL_DEPTH_TEST, &depthEnabled);
glGetBooleanv(GL_MULTISAMPLE, &multisampleEnabled);
glGetIntegerv(GL_CURRENT_PROGRAM, &currentProgram);
glGetIntegerv(GL_BLEND_EQUATION_RGB, &blendEquationRgb);
glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &blendEquationAlpha);
glGetIntegerv(GL_BLEND_SRC_RGB, &blendSrcRgb);
glGetIntegerv(GL_BLEND_SRC_ALPHA, &blendSrcAlpha);
glGetIntegerv(GL_BLEND_DST_RGB, &blendDestRgb);
glGetIntegerv(GL_BLEND_DST_ALPHA, &blendDestAlpha);
glDisable(GL_MULTISAMPLE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
}
void FGLPostProcessState::SaveTextureBindings(unsigned int numUnits)
{
while (textureBinding.Size() < numUnits)
{
unsigned int i = textureBinding.Size();
GLint texture;
glActiveTexture(GL_TEXTURE0 + i);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &texture);
glBindTexture(GL_TEXTURE_2D, 0);
textureBinding.Push(texture);
GLint sampler;
glGetIntegerv(GL_SAMPLER_BINDING, &sampler);
glBindSampler(i, 0);
samplerBinding.Push(sampler);
}
glActiveTexture(GL_TEXTURE0);
}
//-----------------------------------------------------------------------------
//
// Restores state at the end of post processing
//
//-----------------------------------------------------------------------------
FGLPostProcessState::~FGLPostProcessState()
{
if (blendEnabled)
glEnable(GL_BLEND);
else
glDisable(GL_BLEND);
if (scissorEnabled)
glEnable(GL_SCISSOR_TEST);
else
glDisable(GL_SCISSOR_TEST);
if (depthEnabled)
glEnable(GL_DEPTH_TEST);
else
glDisable(GL_DEPTH_TEST);
if (multisampleEnabled)
glEnable(GL_MULTISAMPLE);
else
glDisable(GL_MULTISAMPLE);
glBlendEquationSeparate(blendEquationRgb, blendEquationAlpha);
glBlendFuncSeparate(blendSrcRgb, blendDestRgb, blendSrcAlpha, blendDestAlpha);
glUseProgram(currentProgram);
// Fully unbind to avoid incomplete texture warnings from Nvidia's driver when gl_debug_level 4 is active
for (unsigned int i = 0; i < textureBinding.Size(); i++)
{
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(GL_TEXTURE_2D, 0);
}
for (unsigned int i = 0; i < samplerBinding.Size(); i++)
{
glBindSampler(i, samplerBinding[i]);
}
for (unsigned int i = 0; i < textureBinding.Size(); i++)
{
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(GL_TEXTURE_2D, textureBinding[i]);
}
glActiveTexture(activeTex);
}
}

41
src/rendering/gl/renderer/gl_postprocessstate.h
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#ifndef __GL_POSTPROCESSSTATE_H
#define __GL_POSTPROCESSSTATE_H
#include <string.h>
#include "gl_interface.h"
#include "matrix.h"
#include "c_cvars.h"
namespace OpenGLRenderer
{
class FGLPostProcessState
{
public:
FGLPostProcessState();
~FGLPostProcessState();
void SaveTextureBindings(unsigned int numUnits);
private:
FGLPostProcessState(const FGLPostProcessState &) = delete;
FGLPostProcessState &operator=(const FGLPostProcessState &) = delete;
GLint activeTex;
TArray<GLint> textureBinding;
TArray<GLint> samplerBinding;
GLboolean blendEnabled;
GLboolean scissorEnabled;
GLboolean depthEnabled;
GLboolean multisampleEnabled;
GLint currentProgram;
GLint blendEquationRgb;
GLint blendEquationAlpha;
GLint blendSrcRgb;
GLint blendSrcAlpha;
GLint blendDestRgb;
GLint blendDestAlpha;
};
}
#endif

995
src/rendering/gl/renderer/gl_renderbuffers.cpp
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/*
** Postprocessing framework
** Copyright (c) 2016-2020 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
*/
#include "gl_system.h"
#include "v_video.h"
#include "gl_interface.h"
#include "printf.h"
#include "hw_cvars.h"
#include "gl/system/gl_debug.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl/renderer/gl_postprocessstate.h"
#include "gl/shaders/gl_shaderprogram.h"
#include "gl/system/gl_buffers.h"
#include "templates.h"
#include <random>
EXTERN_CVAR(Int, gl_debug_level)
CVAR(Int, gl_multisample, 1, CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
namespace OpenGLRenderer
{
//==========================================================================
//
// Initialize render buffers and textures used in rendering passes
//
//==========================================================================
FGLRenderBuffers::FGLRenderBuffers()
{
glGetIntegerv(GL_MAX_SAMPLES, &mMaxSamples);
}
//==========================================================================
//
// Free render buffer resources
//
//==========================================================================
FGLRenderBuffers::~FGLRenderBuffers()
{
ClearScene();
ClearPipeline();
ClearEyeBuffers();
ClearShadowMap();
DeleteTexture(mDitherTexture);
}
void FGLRenderBuffers::ClearScene()
{
DeleteFrameBuffer(mSceneFB);
DeleteFrameBuffer(mSceneDataFB);
if (mSceneUsesTextures)
{
DeleteTexture(mSceneMultisampleTex);
DeleteTexture(mSceneFogTex);
DeleteTexture(mSceneNormalTex);
DeleteTexture(mSceneDepthStencilTex);
}
else
{
DeleteRenderBuffer(mSceneMultisampleBuf);
DeleteRenderBuffer(mSceneFogBuf);
DeleteRenderBuffer(mSceneNormalBuf);
DeleteRenderBuffer(mSceneDepthStencilBuf);
}
}
void FGLRenderBuffers::ClearPipeline()
{
for (int i = 0; i < NumPipelineTextures; i++)
{
DeleteFrameBuffer(mPipelineFB[i]);
DeleteTexture(mPipelineTexture[i]);
}
}
void FGLRenderBuffers::ClearEyeBuffers()
{
for (auto handle : mEyeFBs)
DeleteFrameBuffer(handle);
for (auto handle : mEyeTextures)
DeleteTexture(handle);
mEyeTextures.Clear();
mEyeFBs.Clear();
}
void FGLRenderBuffers::DeleteTexture(PPGLTexture &tex)
{
if (tex.handle != 0)
glDeleteTextures(1, &tex.handle);
tex.handle = 0;
}
void FGLRenderBuffers::DeleteRenderBuffer(PPGLRenderBuffer &buf)
{
if (buf.handle != 0)
glDeleteRenderbuffers(1, &buf.handle);
buf.handle = 0;
}
void FGLRenderBuffers::DeleteFrameBuffer(PPGLFrameBuffer &fb)
{
if (fb.handle != 0)
glDeleteFramebuffers(1, &fb.handle);
fb.handle = 0;
}
//==========================================================================
//
// Makes sure all render buffers have sizes suitable for rending at the
// specified resolution
//
//==========================================================================
void FGLRenderBuffers::Setup(int width, int height, int sceneWidth, int sceneHeight)
{
if (width <= 0 || height <= 0)
I_FatalError("Requested invalid render buffer sizes: screen = %dx%d", width, height);
int samples = clamp((int)gl_multisample, 0, mMaxSamples);
bool needsSceneTextures = (gl_ssao != 0);
GLint activeTex;
GLint textureBinding;
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTex);
glActiveTexture(GL_TEXTURE0);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
if (width != mWidth || height != mHeight)
CreatePipeline(width, height);
if (width != mWidth || height != mHeight || mSamples != samples || mSceneUsesTextures != needsSceneTextures)
CreateScene(width, height, samples, needsSceneTextures);
mWidth = width;
mHeight = height;
mSamples = samples;
mSceneUsesTextures = needsSceneTextures;
mSceneWidth = sceneWidth;
mSceneHeight = sceneHeight;
glBindTexture(GL_TEXTURE_2D, textureBinding);
glActiveTexture(activeTex);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (FailedCreate)
{
ClearScene();
ClearPipeline();
ClearEyeBuffers();
mWidth = 0;
mHeight = 0;
mSamples = 0;
mSceneWidth = 0;
mSceneHeight = 0;
I_FatalError("Unable to create render buffers.");
}
}
//==========================================================================
//
// Creates the scene buffers
//
//==========================================================================
void FGLRenderBuffers::CreateScene(int width, int height, int samples, bool needsSceneTextures)
{
ClearScene();
if (samples > 1)
{
if (needsSceneTextures)
{
mSceneMultisampleTex = Create2DMultisampleTexture("SceneMultisample", GL_RGBA16F, width, height, samples, false);
mSceneDepthStencilTex = Create2DMultisampleTexture("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height, samples, false);
mSceneFogTex = Create2DMultisampleTexture("SceneFog", GL_RGBA8, width, height, samples, false);
mSceneNormalTex = Create2DMultisampleTexture("SceneNormal", GL_RGB10_A2, width, height, samples, false);
mSceneFB = CreateFrameBuffer("SceneFB", mSceneMultisampleTex, {}, {}, mSceneDepthStencilTex, true);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mSceneMultisampleTex, mSceneFogTex, mSceneNormalTex, mSceneDepthStencilTex, true);
}
else
{
mSceneMultisampleBuf = CreateRenderBuffer("SceneMultisample", GL_RGBA16F, width, height, samples);
mSceneDepthStencilBuf = CreateRenderBuffer("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height, samples);
mSceneFB = CreateFrameBuffer("SceneFB", mSceneMultisampleBuf, mSceneDepthStencilBuf);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mSceneMultisampleBuf, mSceneDepthStencilBuf);
}
}
else
{
if (needsSceneTextures)
{
mSceneDepthStencilTex = Create2DTexture("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height);
mSceneFogTex = Create2DTexture("SceneFog", GL_RGBA8, width, height);
mSceneNormalTex = Create2DTexture("SceneNormal", GL_RGB10_A2, width, height);
mSceneFB = CreateFrameBuffer("SceneFB", mPipelineTexture[0], {}, {}, mSceneDepthStencilTex, false);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mPipelineTexture[0], mSceneFogTex, mSceneNormalTex, mSceneDepthStencilTex, false);
}
else
{
mSceneDepthStencilBuf = CreateRenderBuffer("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height);
mSceneFB = CreateFrameBuffer("SceneFB", mPipelineTexture[0], mSceneDepthStencilBuf);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mPipelineTexture[0], mSceneDepthStencilBuf);
}
}
}
//==========================================================================
//
// Creates the buffers needed for post processing steps
//
//==========================================================================
void FGLRenderBuffers::CreatePipeline(int width, int height)
{
ClearPipeline();
ClearEyeBuffers();
for (int i = 0; i < NumPipelineTextures; i++)
{
mPipelineTexture[i] = Create2DTexture("PipelineTexture", GL_RGBA16F, width, height);
mPipelineFB[i] = CreateFrameBuffer("PipelineFB", mPipelineTexture[i]);
}
}
//==========================================================================
//
// Creates eye buffers if needed
//
//==========================================================================
void FGLRenderBuffers::CreateEyeBuffers(int eye)
{
if (mEyeFBs.Size() > unsigned(eye))
return;
GLint activeTex, textureBinding, frameBufferBinding;
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTex);
glActiveTexture(GL_TEXTURE0);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &frameBufferBinding);
while (mEyeFBs.Size() <= unsigned(eye))
{
PPGLTexture texture = Create2DTexture("EyeTexture", GL_RGBA16F, mWidth, mHeight);
mEyeTextures.Push(texture);
mEyeFBs.Push(CreateFrameBuffer("EyeFB", texture));
}
glBindTexture(GL_TEXTURE_2D, textureBinding);
glActiveTexture(activeTex);
glBindFramebuffer(GL_FRAMEBUFFER, frameBufferBinding);
}
//==========================================================================
//
// Creates a 2D texture defaulting to linear filtering and clamp to edge
//
//==========================================================================
PPGLTexture FGLRenderBuffers::Create2DTexture(const char *name, GLuint format, int width, int height, const void *data)
{
PPGLTexture tex;
tex.Width = width;
tex.Height = height;
glGenTextures(1, &tex.handle);
glBindTexture(GL_TEXTURE_2D, tex.handle);
FGLDebug::LabelObject(GL_TEXTURE, tex.handle, name);
GLenum dataformat = 0, datatype = 0;
switch (format)
{
case GL_RGBA8: dataformat = GL_RGBA; datatype = GL_UNSIGNED_BYTE; break;
case GL_RGBA16: dataformat = GL_RGBA; datatype = GL_UNSIGNED_SHORT; break;
case GL_RGBA16F: dataformat = GL_RGBA; datatype = GL_FLOAT; break;
case GL_RGBA32F: dataformat = GL_RGBA; datatype = GL_FLOAT; break;
case GL_RGBA16_SNORM: dataformat = GL_RGBA; datatype = GL_SHORT; break;
case GL_R32F: dataformat = GL_RED; datatype = GL_FLOAT; break;
case GL_R16F: dataformat = GL_RED; datatype = GL_FLOAT; break;
case GL_RG32F: dataformat = GL_RG; datatype = GL_FLOAT; break;
case GL_RG16F: dataformat = GL_RG; datatype = GL_FLOAT; break;
case GL_RGB10_A2: dataformat = GL_RGBA; datatype = GL_UNSIGNED_INT_10_10_10_2; break;
case GL_DEPTH_COMPONENT24: dataformat = GL_DEPTH_COMPONENT; datatype = GL_FLOAT; break;
case GL_STENCIL_INDEX8: dataformat = GL_STENCIL_INDEX; datatype = GL_INT; break;
case GL_DEPTH24_STENCIL8: dataformat = GL_DEPTH_STENCIL; datatype = GL_UNSIGNED_INT_24_8; break;
default: I_FatalError("Unknown format passed to FGLRenderBuffers.Create2DTexture");
}
glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, dataformat, datatype, data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
return tex;
}
PPGLTexture FGLRenderBuffers::Create2DMultisampleTexture(const char *name, GLuint format, int width, int height, int samples, bool fixedSampleLocations)
{
PPGLTexture tex;
tex.Width = width;
tex.Height = height;
glGenTextures(1, &tex.handle);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex.handle);
FGLDebug::LabelObject(GL_TEXTURE, tex.handle, name);
glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples, format, width, height, fixedSampleLocations);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0);
return tex;
}
//==========================================================================
//
// Creates a render buffer
//
//==========================================================================
PPGLRenderBuffer FGLRenderBuffers::CreateRenderBuffer(const char *name, GLuint format, int width, int height)
{
PPGLRenderBuffer buf;
glGenRenderbuffers(1, &buf.handle);
glBindRenderbuffer(GL_RENDERBUFFER, buf.handle);
FGLDebug::LabelObject(GL_RENDERBUFFER, buf.handle, name);
glRenderbufferStorage(GL_RENDERBUFFER, format, width, height);
return buf;
}
PPGLRenderBuffer FGLRenderBuffers::CreateRenderBuffer(const char *name, GLuint format, int width, int height, int samples)
{
if (samples <= 1)
return CreateRenderBuffer(name, format, width, height);
PPGLRenderBuffer buf;
glGenRenderbuffers(1, &buf.handle);
glBindRenderbuffer(GL_RENDERBUFFER, buf.handle);
FGLDebug::LabelObject(GL_RENDERBUFFER, buf.handle, name);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, format, width, height);
return buf;
}
//==========================================================================
//
// Creates a frame buffer
//
//==========================================================================
PPGLFrameBuffer FGLRenderBuffers::CreateFrameBuffer(const char *name, PPGLTexture colorbuffer)
{
PPGLFrameBuffer fb;
glGenFramebuffers(1, &fb.handle);
glBindFramebuffer(GL_FRAMEBUFFER, fb.handle);
FGLDebug::LabelObject(GL_FRAMEBUFFER, fb.handle, name);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorbuffer.handle, 0);
if (CheckFrameBufferCompleteness())
ClearFrameBuffer(false, false);
return fb;
}
PPGLFrameBuffer FGLRenderBuffers::CreateFrameBuffer(const char *name, PPGLTexture colorbuffer, PPGLRenderBuffer depthstencil)
{
PPGLFrameBuffer fb;
glGenFramebuffers(1, &fb.handle);
glBindFramebuffer(GL_FRAMEBUFFER, fb.handle);
FGLDebug::LabelObject(GL_FRAMEBUFFER, fb.handle, name);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorbuffer.handle, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, depthstencil.handle);
if (CheckFrameBufferCompleteness())
ClearFrameBuffer(true, true);
return fb;
}
PPGLFrameBuffer FGLRenderBuffers::CreateFrameBuffer(const char *name, PPGLRenderBuffer colorbuffer, PPGLRenderBuffer depthstencil)
{
PPGLFrameBuffer fb;
glGenFramebuffers(1, &fb.handle);
glBindFramebuffer(GL_FRAMEBUFFER, fb.handle);
FGLDebug::LabelObject(GL_FRAMEBUFFER, fb.handle, name);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, colorbuffer.handle);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, depthstencil.handle);
if (CheckFrameBufferCompleteness())
ClearFrameBuffer(true, true);
return fb;
}
PPGLFrameBuffer FGLRenderBuffers::CreateFrameBuffer(const char *name, PPGLTexture colorbuffer0, PPGLTexture colorbuffer1, PPGLTexture colorbuffer2, PPGLTexture depthstencil, bool multisample)
{
PPGLFrameBuffer fb;
glGenFramebuffers(1, &fb.handle);
glBindFramebuffer(GL_FRAMEBUFFER, fb.handle);
FGLDebug::LabelObject(GL_FRAMEBUFFER, fb.handle, name);
if (multisample)
{
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D_MULTISAMPLE, colorbuffer0.handle, 0);
if (colorbuffer1.handle != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D_MULTISAMPLE, colorbuffer1.handle, 0);
if (colorbuffer2.handle != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D_MULTISAMPLE, colorbuffer2.handle, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D_MULTISAMPLE, depthstencil.handle, 0);
}
else
{
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorbuffer0.handle, 0);
if (colorbuffer1.handle != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, colorbuffer1.handle, 0);
if (colorbuffer2.handle != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, colorbuffer2.handle, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, depthstencil.handle, 0);
}
if (CheckFrameBufferCompleteness())
ClearFrameBuffer(true, true);
return fb;
}
//==========================================================================
//
// Verifies that the frame buffer setup is valid
//
//==========================================================================
bool FGLRenderBuffers::CheckFrameBufferCompleteness()
{
GLenum result = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (result == GL_FRAMEBUFFER_COMPLETE)
return true;
bool FailedCreate = true;
if (gl_debug_level > 0)
{
FString error = "glCheckFramebufferStatus failed: ";
switch (result)
{
default: error.AppendFormat("error code %d", (int)result); break;
case GL_FRAMEBUFFER_UNDEFINED: error << "GL_FRAMEBUFFER_UNDEFINED"; break;
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: error << "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT"; break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: error << "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT"; break;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER: error << "GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER"; break;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER: error << "GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER"; break;
case GL_FRAMEBUFFER_UNSUPPORTED: error << "GL_FRAMEBUFFER_UNSUPPORTED"; break;
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: error << "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE"; break;
case GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS: error << "GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS"; break;
}
Printf("%s\n", error.GetChars());
}
return false;
}
//==========================================================================
//
// Clear frame buffer to make sure it never contains uninitialized data
//
//==========================================================================
void FGLRenderBuffers::ClearFrameBuffer(bool stencil, bool depth)
{
GLboolean scissorEnabled;
GLint stencilValue;
GLdouble depthValue;
glGetBooleanv(GL_SCISSOR_TEST, &scissorEnabled);
glGetIntegerv(GL_STENCIL_CLEAR_VALUE, &stencilValue);
glGetDoublev(GL_DEPTH_CLEAR_VALUE, &depthValue);
glDisable(GL_SCISSOR_TEST);
glClearColor(0.0, 0.0, 0.0, 0.0);
glClearDepth(0.0);
glClearStencil(0);
GLenum flags = GL_COLOR_BUFFER_BIT;
if (stencil)
flags |= GL_STENCIL_BUFFER_BIT;
if (depth)
flags |= GL_DEPTH_BUFFER_BIT;
glClear(flags);
glClearStencil(stencilValue);
glClearDepth(depthValue);
if (scissorEnabled)
glEnable(GL_SCISSOR_TEST);
}
//==========================================================================
//
// Resolves the multisample frame buffer by copying it to the first pipeline texture
//
//==========================================================================
void FGLRenderBuffers::BlitSceneToTexture()
{
mCurrentPipelineTexture = 0;
if (mSamples <= 1)
return;
glBindFramebuffer(GL_READ_FRAMEBUFFER, mSceneFB.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mPipelineFB[mCurrentPipelineTexture].handle);
glBlitFramebuffer(0, 0, mWidth, mHeight, 0, 0, mWidth, mHeight, GL_COLOR_BUFFER_BIT, GL_NEAREST);
if ((gl.flags & RFL_INVALIDATE_BUFFER) != 0)
{
GLenum attachments[2] = { GL_COLOR_ATTACHMENT0, GL_DEPTH_STENCIL_ATTACHMENT };
glInvalidateFramebuffer(GL_READ_FRAMEBUFFER, 2, attachments);
}
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
}
//==========================================================================
//
// Eye textures and their frame buffers
//
//==========================================================================
void FGLRenderBuffers::BlitToEyeTexture(int eye, bool allowInvalidate)
{
CreateEyeBuffers(eye);
glBindFramebuffer(GL_READ_FRAMEBUFFER, mPipelineFB[mCurrentPipelineTexture].handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mEyeFBs[eye].handle);
glBlitFramebuffer(0, 0, mWidth, mHeight, 0, 0, mWidth, mHeight, GL_COLOR_BUFFER_BIT, GL_NEAREST);
if ((gl.flags & RFL_INVALIDATE_BUFFER) != 0 && allowInvalidate)
{
GLenum attachments[2] = { GL_COLOR_ATTACHMENT0, GL_DEPTH_STENCIL_ATTACHMENT };
glInvalidateFramebuffer(GL_READ_FRAMEBUFFER, 2, attachments);
}
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
}
void FGLRenderBuffers::BlitFromEyeTexture(int eye)
{
if (mEyeFBs.Size() <= unsigned(eye)) return;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mPipelineFB[mCurrentPipelineTexture].handle);
glBindFramebuffer(GL_READ_FRAMEBUFFER, mEyeFBs[eye].handle);
glBlitFramebuffer(0, 0, mWidth, mHeight, 0, 0, mWidth, mHeight, GL_COLOR_BUFFER_BIT, GL_NEAREST);
if ((gl.flags & RFL_INVALIDATE_BUFFER) != 0)
{
GLenum attachments[2] = { GL_COLOR_ATTACHMENT0, GL_DEPTH_STENCIL_ATTACHMENT };
glInvalidateFramebuffer(GL_READ_FRAMEBUFFER, 2, attachments);
}
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
}
void FGLRenderBuffers::BindEyeTexture(int eye, int texunit)
{
CreateEyeBuffers(eye);
glActiveTexture(GL_TEXTURE0 + texunit);
glBindTexture(GL_TEXTURE_2D, mEyeTextures[eye].handle);
}
void FGLRenderBuffers::BindDitherTexture(int texunit)
{
if (!mDitherTexture)
{
static const float data[64] =
{
.0078125, .2578125, .1328125, .3828125, .0234375, .2734375, .1484375, .3984375,
.7578125, .5078125, .8828125, .6328125, .7734375, .5234375, .8984375, .6484375,
.0703125, .3203125, .1953125, .4453125, .0859375, .3359375, .2109375, .4609375,
.8203125, .5703125, .9453125, .6953125, .8359375, .5859375, .9609375, .7109375,
.0390625, .2890625, .1640625, .4140625, .0546875, .3046875, .1796875, .4296875,
.7890625, .5390625, .9140625, .6640625, .8046875, .5546875, .9296875, .6796875,
.1015625, .3515625, .2265625, .4765625, .1171875, .3671875, .2421875, .4921875,
.8515625, .6015625, .9765625, .7265625, .8671875, .6171875, .9921875, .7421875,
};
glActiveTexture(GL_TEXTURE0 + texunit);
mDitherTexture = Create2DTexture("DitherTexture", GL_R32F, 8, 8, data);
}
mDitherTexture.Bind(1, GL_NEAREST, GL_REPEAT);
}
//==========================================================================
//
// Shadow map texture and frame buffers
//
//==========================================================================
void FGLRenderBuffers::BindShadowMapFB()
{
CreateShadowMap();
glBindFramebuffer(GL_FRAMEBUFFER, mShadowMapFB.handle);
}
void FGLRenderBuffers::BindShadowMapTexture(int texunit)
{
CreateShadowMap();
glActiveTexture(GL_TEXTURE0 + texunit);
glBindTexture(GL_TEXTURE_2D, mShadowMapTexture.handle);
}
void FGLRenderBuffers::ClearShadowMap()
{
DeleteFrameBuffer(mShadowMapFB);
DeleteTexture(mShadowMapTexture);
mCurrentShadowMapSize = 0;
}
void FGLRenderBuffers::CreateShadowMap()
{
if (mShadowMapTexture.handle != 0 && gl_shadowmap_quality == mCurrentShadowMapSize)
return;
ClearShadowMap();
GLint activeTex, textureBinding, frameBufferBinding;
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTex);
glActiveTexture(GL_TEXTURE0);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &frameBufferBinding);
mShadowMapTexture = Create2DTexture("ShadowMap", GL_R32F, gl_shadowmap_quality, 1024);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
mShadowMapFB = CreateFrameBuffer("ShadowMapFB", mShadowMapTexture);
glBindTexture(GL_TEXTURE_2D, textureBinding);
glActiveTexture(activeTex);
glBindFramebuffer(GL_FRAMEBUFFER, frameBufferBinding);
mCurrentShadowMapSize = gl_shadowmap_quality;
}
//==========================================================================
//
// Makes the scene frame buffer active (multisample, depth, stecil, etc.)
//
//==========================================================================
void FGLRenderBuffers::BindSceneFB(bool sceneData)
{
glBindFramebuffer(GL_FRAMEBUFFER, sceneData ? mSceneDataFB.handle : mSceneFB.handle);
}
//==========================================================================
//
// Binds the scene color texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneColorTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneMultisampleTex.handle);
else
glBindTexture(GL_TEXTURE_2D, mPipelineTexture[0].handle);
}
//==========================================================================
//
// Binds the scene fog data texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneFogTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneFogTex.handle);
else
glBindTexture(GL_TEXTURE_2D, mSceneFogTex.handle);
}
//==========================================================================
//
// Binds the scene normal data texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneNormalTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneNormalTex.handle);
else
glBindTexture(GL_TEXTURE_2D, mSceneNormalTex.handle);
}
//==========================================================================
//
// Binds the depth texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneDepthTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneDepthStencilTex.handle);
else
glBindTexture(GL_TEXTURE_2D, mSceneDepthStencilTex.handle);
}
//==========================================================================
//
// Binds the current scene/effect/hud texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindCurrentTexture(int index, int filter, int wrap)
{
mPipelineTexture[mCurrentPipelineTexture].Bind(index, filter, wrap);
}
//==========================================================================
//
// Makes the frame buffer for the current texture active
//
//==========================================================================
void FGLRenderBuffers::BindCurrentFB()
{
mPipelineFB[mCurrentPipelineTexture].Bind();
}
//==========================================================================
//
// Makes the frame buffer for the next texture active
//
//==========================================================================
void FGLRenderBuffers::BindNextFB()
{
int out = (mCurrentPipelineTexture + 1) % NumPipelineTextures;
mPipelineFB[out].Bind();
}
//==========================================================================
//
// Next pipeline texture now contains the output
//
//==========================================================================
void FGLRenderBuffers::NextTexture()
{
mCurrentPipelineTexture = (mCurrentPipelineTexture + 1) % NumPipelineTextures;
}
//==========================================================================
//
// Makes the screen frame buffer active
//
//==========================================================================
void FGLRenderBuffers::BindOutputFB()
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
//==========================================================================
//
// Returns true if render buffers are supported and should be used
//
//==========================================================================
bool FGLRenderBuffers::FailedCreate = false;
//==========================================================================
//
// Creates or updates textures used by postprocess effects
//
//==========================================================================
PPGLTextureBackend *GLPPRenderState::GetGLTexture(PPTexture *texture)
{
if (!texture->Backend)
{
FGLPostProcessState savedState;
auto backend = std::make_unique<PPGLTextureBackend>();
int glformat;
switch (texture->Format)
{
default:
case PixelFormat::Rgba8: glformat = GL_RGBA8; break;
case PixelFormat::Rgba16f: glformat = GL_RGBA16F; break;
case PixelFormat::R32f: glformat = GL_R32F; break;
case PixelFormat::Rg16f: glformat = GL_RG16F; break;
case PixelFormat::Rgba16_snorm: glformat = GL_RGBA16_SNORM; break;
}
if (texture->Data)
backend->Tex = buffers->Create2DTexture("PPTexture", glformat, texture->Width, texture->Height, texture->Data.get());
else
backend->Tex = buffers->Create2DTexture("PPTexture", glformat, texture->Width, texture->Height);
texture->Backend = std::move(backend);
}
return static_cast<PPGLTextureBackend*>(texture->Backend.get());
}
//==========================================================================
//
// Compile the shaders declared by post process effects
//
//==========================================================================
FShaderProgram *GLPPRenderState::GetGLShader(PPShader *shader)
{
if (!shader->Backend)
{
auto glshader = std::make_unique<FShaderProgram>();
FString prolog;
if (!shader->Uniforms.empty())
prolog = UniformBlockDecl::Create("Uniforms", shader->Uniforms, POSTPROCESS_BINDINGPOINT);
prolog += shader->Defines;
glshader->Compile(FShaderProgram::Vertex, shader->VertexShader, "", shader->Version);
glshader->Compile(FShaderProgram::Fragment, shader->FragmentShader, prolog, shader->Version);
glshader->Link(shader->FragmentShader.GetChars());
if (!shader->Uniforms.empty())
glshader->SetUniformBufferLocation(POSTPROCESS_BINDINGPOINT, "Uniforms");
shader->Backend = std::move(glshader);
}
return static_cast<FShaderProgram*>(shader->Backend.get());
}
//==========================================================================
//
// Renders one post process effect
//
//==========================================================================
void GLPPRenderState::Draw()
{
FGLPostProcessState savedState;
// Bind input textures
for (unsigned int index = 0; index < Textures.Size(); index++)
{
savedState.SaveTextureBindings(index + 1);
const PPTextureInput &input = Textures[index];
int filter = (input.Filter == PPFilterMode::Nearest) ? GL_NEAREST : GL_LINEAR;
int wrap = (input.Wrap == PPWrapMode::Clamp) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
switch (input.Type)
{
default:
case PPTextureType::CurrentPipelineTexture:
buffers->BindCurrentTexture(index, filter, wrap);
break;
case PPTextureType::NextPipelineTexture:
I_FatalError("PPTextureType::NextPipelineTexture not allowed as input\n");
break;
case PPTextureType::PPTexture:
GetGLTexture(input.Texture)->Tex.Bind(index, filter, wrap);
break;
case PPTextureType::SceneColor:
buffers->BindSceneColorTexture(index);
break;
case PPTextureType::SceneFog:
buffers->BindSceneFogTexture(index);
break;
case PPTextureType::SceneNormal:
buffers->BindSceneNormalTexture(index);
break;
case PPTextureType::SceneDepth:
buffers->BindSceneDepthTexture(index);
break;
}
}
// Set render target
switch (Output.Type)
{
default:
I_FatalError("Unsupported postprocess output type\n");
break;
case PPTextureType::CurrentPipelineTexture:
buffers->BindCurrentFB();
break;
case PPTextureType::NextPipelineTexture:
buffers->BindNextFB();
break;
case PPTextureType::PPTexture:
if (GetGLTexture(Output.Texture)->FB)
GetGLTexture(Output.Texture)->FB.Bind();
else
GetGLTexture(Output.Texture)->FB = buffers->CreateFrameBuffer("PPTextureFB"/*Output.Texture.GetChars()*/, GetGLTexture(Output.Texture)->Tex);
break;
case PPTextureType::SceneColor:
buffers->BindSceneFB(false);
break;
}
// Set blend mode
if (BlendMode.BlendOp == STYLEOP_Add && BlendMode.SrcAlpha == STYLEALPHA_One && BlendMode.DestAlpha == STYLEALPHA_Zero && BlendMode.Flags == 0)
{
glDisable(GL_BLEND);
}
else
{
// To do: support all the modes
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
if (BlendMode.SrcAlpha == STYLEALPHA_One && BlendMode.DestAlpha == STYLEALPHA_One)
glBlendFunc(GL_ONE, GL_ONE);
else
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
// Setup viewport
glViewport(Viewport.left, Viewport.top, Viewport.width, Viewport.height);
auto shader = GetGLShader(Shader);
// Set uniforms
if (Uniforms.Data.Size() > 0)
{
if (!shader->Uniforms)
shader->Uniforms.reset(screen->CreateDataBuffer(POSTPROCESS_BINDINGPOINT, false, false));
shader->Uniforms->SetData(Uniforms.Data.Size(), Uniforms.Data.Data());
static_cast<GLDataBuffer*>(shader->Uniforms.get())->BindBase();
}
// Set shader
shader->Bind();
// Draw the screen quad
GLRenderer->RenderScreenQuad();
// Advance to next PP texture if our output was sent there
if (Output.Type == PPTextureType::NextPipelineTexture)
buffers->NextTexture();
glViewport(screen->mScreenViewport.left, screen->mScreenViewport.top, screen->mScreenViewport.width, screen->mScreenViewport.height);
}
void GLPPRenderState::PushGroup(const FString &name)
{
FGLDebug::PushGroup(name.GetChars());
}
void GLPPRenderState::PopGroup()
{
FGLDebug::PopGroup();
}
// Store the current stereo 3D eye buffer, and Load the next one
int FGLRenderBuffers::NextEye(int eyeCount)
{
int nextEye = (mCurrentEye + 1) % eyeCount;
if (nextEye == mCurrentEye) return mCurrentEye;
BlitToEyeTexture(mCurrentEye);
mCurrentEye = nextEye;
BlitFromEyeTexture(mCurrentEye);
return mCurrentEye;
}
} // namespace OpenGLRenderer

211
src/rendering/gl/renderer/gl_renderbuffers.h
View file

@ -1,211 +0,0 @@
#pragma once
#include "hwrenderer/postprocessing/hw_postprocess.h"
namespace OpenGLRenderer
{
class FGLRenderBuffers;
class PPGLTexture
{
public:
void Bind(int index, int filter = GL_NEAREST, int wrap = GL_CLAMP_TO_EDGE)
{
glActiveTexture(GL_TEXTURE0 + index);
glBindTexture(GL_TEXTURE_2D, handle);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap);
}
int Width = -1;
int Height = -1;
explicit operator bool() const { return handle != 0; }
private:
GLuint handle = 0;
friend class FGLRenderBuffers;
friend class PPGLTextureBackend;
};
class PPGLFrameBuffer
{
public:
void Bind()
{
glBindFramebuffer(GL_FRAMEBUFFER, handle);
}
explicit operator bool() const { return handle != 0; }
private:
GLuint handle = 0;
friend class FGLRenderBuffers;
friend class PPGLTextureBackend;
};
class PPGLRenderBuffer
{
private:
GLuint handle = 0;
explicit operator bool() const { return handle != 0; }
friend class FGLRenderBuffers;
};
class PPGLTextureBackend : public PPTextureBackend
{
public:
~PPGLTextureBackend()
{
if (Tex.handle != 0)
{
glDeleteTextures(1, &Tex.handle);
Tex.handle = 0;
}
if (FB.handle != 0)
{
glDeleteFramebuffers(1, &FB.handle);
FB.handle = 0;
}
}
PPGLTexture Tex;
PPGLFrameBuffer FB;
};
class FShaderProgram;
class GLPPRenderState : public PPRenderState
{
public:
GLPPRenderState(FGLRenderBuffers *buffers) : buffers(buffers) { }
void PushGroup(const FString &name) override;
void PopGroup() override;
void Draw() override;
private:
PPGLTextureBackend *GetGLTexture(PPTexture *texture);
FShaderProgram *GetGLShader(PPShader *shader);
FGLRenderBuffers *buffers;
};
class FGLRenderBuffers
{
public:
FGLRenderBuffers();
~FGLRenderBuffers();
void Setup(int width, int height, int sceneWidth, int sceneHeight);
void BindSceneFB(bool sceneData);
void BindSceneColorTexture(int index);
void BindSceneFogTexture(int index);
void BindSceneNormalTexture(int index);
void BindSceneDepthTexture(int index);
void BlitSceneToTexture();
void BindCurrentTexture(int index, int filter = GL_NEAREST, int wrap = GL_CLAMP_TO_EDGE);
void BindCurrentFB();
void BindNextFB();
void NextTexture();
PPGLFrameBuffer GetCurrentFB() const { return mPipelineFB[mCurrentPipelineTexture]; }
void BindOutputFB();
void BlitToEyeTexture(int eye, bool allowInvalidate=true);
void BlitFromEyeTexture(int eye);
void BindEyeTexture(int eye, int texunit);
int NextEye(int eyeCount);
int & CurrentEye() { return mCurrentEye; }
void BindDitherTexture(int texunit);
void BindShadowMapFB();
void BindShadowMapTexture(int index);
int GetWidth() const { return mWidth; }
int GetHeight() const { return mHeight; }
int GetSceneWidth() const { return mSceneWidth; }
int GetSceneHeight() const { return mSceneHeight; }
private:
void ClearScene();
void ClearPipeline();
void ClearEyeBuffers();
void ClearShadowMap();
void CreateScene(int width, int height, int samples, bool needsSceneTextures);
void CreatePipeline(int width, int height);
void CreateEyeBuffers(int eye);
void CreateShadowMap();
PPGLTexture Create2DTexture(const char *name, GLuint format, int width, int height, const void *data = nullptr);
PPGLTexture Create2DMultisampleTexture(const char *name, GLuint format, int width, int height, int samples, bool fixedSampleLocations);
PPGLRenderBuffer CreateRenderBuffer(const char *name, GLuint format, int width, int height);
PPGLRenderBuffer CreateRenderBuffer(const char *name, GLuint format, int width, int height, int samples);
PPGLFrameBuffer CreateFrameBuffer(const char *name, PPGLTexture colorbuffer);
PPGLFrameBuffer CreateFrameBuffer(const char *name, PPGLTexture colorbuffer, PPGLRenderBuffer depthstencil);
PPGLFrameBuffer CreateFrameBuffer(const char *name, PPGLRenderBuffer colorbuffer, PPGLRenderBuffer depthstencil);
PPGLFrameBuffer CreateFrameBuffer(const char *name, PPGLTexture colorbuffer0, PPGLTexture colorbuffer1, PPGLTexture colorbuffer2, PPGLTexture depthstencil, bool multisample);
bool CheckFrameBufferCompleteness();
void ClearFrameBuffer(bool stencil, bool depth);
void DeleteTexture(PPGLTexture &handle);
void DeleteRenderBuffer(PPGLRenderBuffer &handle);
void DeleteFrameBuffer(PPGLFrameBuffer &handle);
int mWidth = 0;
int mHeight = 0;
int mSamples = 0;
int mMaxSamples = 0;
int mSceneWidth = 0;
int mSceneHeight = 0;
static const int NumPipelineTextures = 2;
int mCurrentPipelineTexture = 0;
// Buffers for the scene
PPGLTexture mSceneMultisampleTex;
PPGLTexture mSceneDepthStencilTex;
PPGLTexture mSceneFogTex;
PPGLTexture mSceneNormalTex;
PPGLRenderBuffer mSceneMultisampleBuf;
PPGLRenderBuffer mSceneDepthStencilBuf;
PPGLRenderBuffer mSceneFogBuf;
PPGLRenderBuffer mSceneNormalBuf;
PPGLFrameBuffer mSceneFB;
PPGLFrameBuffer mSceneDataFB;
bool mSceneUsesTextures = false;
// Effect/HUD buffers
PPGLTexture mPipelineTexture[NumPipelineTextures];
PPGLFrameBuffer mPipelineFB[NumPipelineTextures];
// Eye buffers
TArray<PPGLTexture> mEyeTextures;
TArray<PPGLFrameBuffer> mEyeFBs;
int mCurrentEye = 0;
// Shadow map texture
PPGLTexture mShadowMapTexture;
PPGLFrameBuffer mShadowMapFB;
int mCurrentShadowMapSize = 0;
PPGLTexture mDitherTexture;
static bool FailedCreate;
friend class GLPPRenderState;
};
}

118
src/rendering/gl/renderer/gl_renderer.cpp
View file

@ -1,28 +1,35 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2005-2016 Christoph Oelckers
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
/*
** gl1_renderer.cpp
** gl_renderer.cpp
** Renderer interface
**
**---------------------------------------------------------------------------
** Copyright 2005-2020 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "gl_system.h"
@ -36,6 +43,7 @@
#include "d_player.h"
#include "a_dynlight.h"
#include "cmdlib.h"
#include "version.h"
#include "g_game.h"
#include "swrenderer/r_swscene.h"
#include "hwrenderer/utility/hw_clock.h"
@ -43,22 +51,22 @@
#include "gl_interface.h"
#include "gl/system/gl_framebuffer.h"
#include "hw_cvars.h"
#include "gl/system/gl_debug.h"
#include "gl_debug.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_renderstate.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl_renderstate.h"
#include "gl_renderbuffers.h"
#include "gl/shaders/gl_shaderprogram.h"
#include "hw_vrmodes.h"
#include "flatvertices.h"
#include "hwrenderer/scene/hw_skydome.h"
#include "hwrenderer/scene/hw_fakeflat.h"
#include "gl/textures/gl_samplers.h"
#include "gl_samplers.h"
#include "hw_lightbuffer.h"
#include "hwrenderer/data/hw_viewpointbuffer.h"
#include "r_videoscale.h"
#include "r_data/models/models.h"
#include "gl/renderer/gl_postprocessstate.h"
#include "gl/system/gl_buffers.h"
#include "gl_postprocessstate.h"
#include "gl_buffers.h"
#include "texturemanager.h"
EXTERN_CVAR(Int, screenblocks)
@ -95,8 +103,6 @@ void FGLRenderer::Initialize(int width, int height)
mShadowMapShader = new FShadowMapShader();
// needed for the core profile, because someone decided it was a good idea to remove the default VAO.
glGenQueries(1, &PortalQueryObject);
glGenVertexArrays(1, &mVAOID);
glBindVertexArray(mVAOID);
FGLDebug::LabelObject(GL_VERTEX_ARRAY, mVAOID, "FGLRenderer.mVAOID");
@ -120,8 +126,6 @@ FGLRenderer::~FGLRenderer()
glBindVertexArray(0);
glDeleteVertexArrays(1, &mVAOID);
}
if (PortalQueryObject != 0) glDeleteQueries(1, &PortalQueryObject);
if (mBuffers) delete mBuffers;
if (mSaveBuffers) delete mSaveBuffers;
if (mPresentShader) delete mPresentShader;
@ -160,44 +164,6 @@ void FGLRenderer::EndOffscreen()
glBindFramebuffer(GL_FRAMEBUFFER, mOldFBID);
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::UpdateShadowMap()
{
if (screen->mShadowMap.PerformUpdate())
{
FGLDebug::PushGroup("ShadowMap");
FGLPostProcessState savedState;
static_cast<GLDataBuffer*>(screen->mShadowMap.mLightList)->BindBase();
static_cast<GLDataBuffer*>(screen->mShadowMap.mNodesBuffer)->BindBase();
static_cast<GLDataBuffer*>(screen->mShadowMap.mLinesBuffer)->BindBase();
mBuffers->BindShadowMapFB();
mShadowMapShader->Bind();
mShadowMapShader->Uniforms->ShadowmapQuality = gl_shadowmap_quality;
mShadowMapShader->Uniforms->NodesCount = screen->mShadowMap.NodesCount();
mShadowMapShader->Uniforms.SetData();
static_cast<GLDataBuffer*>(mShadowMapShader->Uniforms.GetBuffer())->BindBase();
glViewport(0, 0, gl_shadowmap_quality, 1024);
RenderScreenQuad();
const auto &viewport = screen->mScreenViewport;
glViewport(viewport.left, viewport.top, viewport.width, viewport.height);
mBuffers->BindShadowMapTexture(16);
FGLDebug::PopGroup();
screen->mShadowMap.FinishUpdate();
}
}
//===========================================================================
//
//
@ -207,14 +173,10 @@ void FGLRenderer::UpdateShadowMap()
void FGLRenderer::BindToFrameBuffer(FTexture *tex)
{
auto BaseLayer = static_cast<FHardwareTexture*>(tex->GetHardwareTexture(0, 0));
if (BaseLayer == nullptr)
{
// must create the hardware texture first
BaseLayer->BindOrCreate(tex, 0, 0, 0, 0);
FHardwareTexture::Unbind(0);
gl_RenderState.ClearLastMaterial();
}
// must create the hardware texture first
BaseLayer->BindOrCreate(tex, 0, 0, 0, 0);
FHardwareTexture::Unbind(0);
gl_RenderState.ClearLastMaterial();
BaseLayer->BindToFrameBuffer(tex->GetWidth(), tex->GetHeight());
}

4
src/rendering/gl/renderer/gl_renderer.h
View file

@ -6,7 +6,7 @@
#include "vectors.h"
#include "swrenderer/r_renderer.h"
#include "matrix.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl_renderbuffers.h"
#include "hwrenderer/scene/hw_portal.h"
#include "hwrenderer/dynlights/hw_shadowmap.h"
#include <functional>
@ -52,7 +52,6 @@ public:
FSamplerManager *mSamplerManager = nullptr;
unsigned int mFBID;
unsigned int mVAOID;
unsigned int PortalQueryObject;
unsigned int mStencilValue = 0;
int mOldFBID;
@ -89,7 +88,6 @@ public:
bool StartOffscreen();
void EndOffscreen();
void UpdateShadowMap();
void BindToFrameBuffer(FTexture *mat);

586
src/rendering/gl/renderer/gl_renderstate.cpp
View file

@ -1,586 +0,0 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2009-2016 Christoph Oelckers
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
/*
** gl_renderstate.cpp
** Render state maintenance
**
*/
#include "templates.h"
#include "doomstat.h"
#include "r_data/colormaps.h"
#include "gl_system.h"
#include "gl_interface.h"
#include "hw_cvars.h"
#include "flatvertices.h"
#include "hwrenderer/scene/hw_skydome.h"
#include "gl/shaders/gl_shader.h"
#include "gl/renderer/gl_renderer.h"
#include "hw_lightbuffer.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl/textures/gl_hwtexture.h"
#include "gl/system/gl_buffers.h"
#include "hwrenderer/utility/hw_clock.h"
#include "hwrenderer/data/hw_viewpointbuffer.h"
namespace OpenGLRenderer
{
FGLRenderState gl_RenderState;
static VSMatrix identityMatrix(1);
static void matrixToGL(const VSMatrix &mat, int loc)
{
glUniformMatrix4fv(loc, 1, false, (float*)&mat);
}
//==========================================================================
//
// This only gets called once upon setup.
// With OpenGL the state is persistent and cannot be cleared, once set up.
//
//==========================================================================
void FGLRenderState::Reset()
{
FRenderState::Reset();
mVertexBuffer = mCurrentVertexBuffer = nullptr;
mGlossiness = 0.0f;
mSpecularLevel = 0.0f;
mShaderTimer = 0.0f;
stRenderStyle = DefaultRenderStyle();
stSrcBlend = stDstBlend = -1;
stBlendEquation = -1;
stAlphaTest = 0;
mLastDepthClamp = true;
mEffectState = 0;
activeShader = nullptr;
mCurrentVertexBuffer = nullptr;
mCurrentVertexOffsets[0] = mVertexOffsets[0] = 0;
mCurrentIndexBuffer = nullptr;
}
//==========================================================================
//
// Apply shader settings
//
//==========================================================================
bool FGLRenderState::ApplyShader()
{
static const float nulvec[] = { 0.f, 0.f, 0.f, 0.f };
if (mSpecialEffect > EFF_NONE)
{
activeShader = GLRenderer->mShaderManager->BindEffect(mSpecialEffect, mPassType);
}
else
{
activeShader = GLRenderer->mShaderManager->Get(mTextureEnabled ? mEffectState : SHADER_NoTexture, mAlphaThreshold >= 0.f, mPassType);
activeShader->Bind();
}
int fogset = 0;
if (mFogEnabled)
{
if (mFogEnabled == 2)
{
fogset = -3; // 2D rendering with 'foggy' overlay.
}
else if ((GetFogColor() & 0xffffff) == 0)
{
fogset = gl_fogmode;
}
else
{
fogset = -gl_fogmode;
}
}
glVertexAttrib4fv(VATTR_COLOR, &mStreamData.uVertexColor.X);
glVertexAttrib4fv(VATTR_NORMAL, &mStreamData.uVertexNormal.X);
activeShader->muDesaturation.Set(mStreamData.uDesaturationFactor);
activeShader->muFogEnabled.Set(fogset);
int f = mTextureModeFlags;
if (!mBrightmapEnabled) f &= ~(TEXF_Brightmap | TEXF_Glowmap);
activeShader->muTextureMode.Set((mTextureMode == TM_NORMAL && mTempTM == TM_OPAQUE ? TM_OPAQUE : mTextureMode) | f);
activeShader->muLightParms.Set(mLightParms);
activeShader->muFogColor.Set(mStreamData.uFogColor);
activeShader->muObjectColor.Set(mStreamData.uObjectColor);
activeShader->muDynLightColor.Set(&mStreamData.uDynLightColor.X);
activeShader->muInterpolationFactor.Set(mStreamData.uInterpolationFactor);
activeShader->muTimer.Set((double)(screen->FrameTime - firstFrame) * (double)mShaderTimer / 1000.);
activeShader->muAlphaThreshold.Set(mAlphaThreshold);
activeShader->muLightIndex.Set(-1);
activeShader->muClipSplit.Set(mClipSplit);
activeShader->muSpecularMaterial.Set(mGlossiness, mSpecularLevel);
activeShader->muAddColor.Set(mStreamData.uAddColor);
activeShader->muTextureAddColor.Set(mStreamData.uTextureAddColor);
activeShader->muTextureModulateColor.Set(mStreamData.uTextureModulateColor);
activeShader->muTextureBlendColor.Set(mStreamData.uTextureBlendColor);
activeShader->muDetailParms.Set(&mStreamData.uDetailParms.X);
if (mGlowEnabled || activeShader->currentglowstate)
{
activeShader->muGlowTopColor.Set(&mStreamData.uGlowTopColor.X);
activeShader->muGlowBottomColor.Set(&mStreamData.uGlowBottomColor.X);
activeShader->muGlowTopPlane.Set(&mStreamData.uGlowTopPlane.X);
activeShader->muGlowBottomPlane.Set(&mStreamData.uGlowBottomPlane.X);
activeShader->currentglowstate = mGlowEnabled;
}
if (mGradientEnabled || activeShader->currentgradientstate)
{
activeShader->muObjectColor2.Set(mStreamData.uObjectColor2);
activeShader->muGradientTopPlane.Set(&mStreamData.uGradientTopPlane.X);
activeShader->muGradientBottomPlane.Set(&mStreamData.uGradientBottomPlane.X);
activeShader->currentgradientstate = mGradientEnabled;
}
if (mSplitEnabled || activeShader->currentsplitstate)
{
activeShader->muSplitTopPlane.Set(&mStreamData.uSplitTopPlane.X);
activeShader->muSplitBottomPlane.Set(&mStreamData.uSplitBottomPlane.X);
activeShader->currentsplitstate = mSplitEnabled;
}
if (mTextureMatrixEnabled)
{
matrixToGL(mTextureMatrix, activeShader->texturematrix_index);
activeShader->currentTextureMatrixState = true;
}
else if (activeShader->currentTextureMatrixState)
{
activeShader->currentTextureMatrixState = false;
matrixToGL(identityMatrix, activeShader->texturematrix_index);
}
if (mModelMatrixEnabled)
{
matrixToGL(mModelMatrix, activeShader->modelmatrix_index);
VSMatrix norm;
norm.computeNormalMatrix(mModelMatrix);
matrixToGL(norm, activeShader->normalmodelmatrix_index);
activeShader->currentModelMatrixState = true;
}
else if (activeShader->currentModelMatrixState)
{
activeShader->currentModelMatrixState = false;
matrixToGL(identityMatrix, activeShader->modelmatrix_index);
matrixToGL(identityMatrix, activeShader->normalmodelmatrix_index);
}
int index = mLightIndex;
// Mess alert for crappy AncientGL!
if (!screen->mLights->GetBufferType() && index >= 0)
{
size_t start, size;
index = screen->mLights->GetBinding(index, &start, &size);
if (start != mLastMappedLightIndex)
{
mLastMappedLightIndex = start;
static_cast<GLDataBuffer*>(screen->mLights->GetBuffer())->BindRange(nullptr, start, size);
}
}
activeShader->muLightIndex.Set(index);
return true;
}
//==========================================================================
//
// Apply State
//
//==========================================================================
void FGLRenderState::ApplyState()
{
if (mRenderStyle != stRenderStyle)
{
ApplyBlendMode();
stRenderStyle = mRenderStyle;
}
if (mSplitEnabled != stSplitEnabled)
{
if (mSplitEnabled)
{
glEnable(GL_CLIP_DISTANCE3);
glEnable(GL_CLIP_DISTANCE4);
}
else
{
glDisable(GL_CLIP_DISTANCE3);
glDisable(GL_CLIP_DISTANCE4);
}
stSplitEnabled = mSplitEnabled;
}
if (mMaterial.mChanged)
{
ApplyMaterial(mMaterial.mMaterial, mMaterial.mClampMode, mMaterial.mTranslation, mMaterial.mOverrideShader);
mMaterial.mChanged = false;
}
if (mBias.mChanged)
{
if (mBias.mFactor == 0 && mBias.mUnits == 0)
{
glDisable(GL_POLYGON_OFFSET_FILL);
}
else
{
glEnable(GL_POLYGON_OFFSET_FILL);
}
glPolygonOffset(mBias.mFactor, mBias.mUnits);
mBias.mChanged = false;
}
}
void FGLRenderState::ApplyBuffers()
{
if (mVertexBuffer != mCurrentVertexBuffer || mVertexOffsets[0] != mCurrentVertexOffsets[0] || mVertexOffsets[1] != mCurrentVertexOffsets[1])
{
assert(mVertexBuffer != nullptr);
static_cast<GLVertexBuffer*>(mVertexBuffer)->Bind(mVertexOffsets);
mCurrentVertexBuffer = mVertexBuffer;
mCurrentVertexOffsets[0] = mVertexOffsets[0];
mCurrentVertexOffsets[1] = mVertexOffsets[1];
}
if (mIndexBuffer != mCurrentIndexBuffer)
{
if (mIndexBuffer) static_cast<GLIndexBuffer*>(mIndexBuffer)->Bind();
mCurrentIndexBuffer = mIndexBuffer;
}
}
void FGLRenderState::Apply()
{
ApplyState();
ApplyBuffers();
ApplyShader();
}
//===========================================================================
//
// Binds a texture to the renderer
//
//===========================================================================
void FGLRenderState::ApplyMaterial(FMaterial *mat, int clampmode, int translation, int overrideshader)
{
if (mat->Source()->isHardwareCanvas())
{
mTempTM = TM_OPAQUE;
}
else
{
mTempTM = TM_NORMAL;
}
auto tex = mat->Source();
mEffectState = overrideshader >= 0 ? overrideshader : mat->GetShaderIndex();
mShaderTimer = tex->GetShaderSpeed();
SetSpecular(tex->GetGlossiness(), tex->GetSpecularLevel());
if (tex->isHardwareCanvas()) static_cast<FCanvasTexture*>(tex->GetTexture())->NeedUpdate();
clampmode = tex->GetClampMode(clampmode);
// avoid rebinding the same texture multiple times.
if (mat == lastMaterial && lastClamp == clampmode && translation == lastTranslation) return;
lastMaterial = mat;
lastClamp = clampmode;
lastTranslation = translation;
int usebright = false;
int maxbound = 0;
int numLayers = mat->NumLayers();
MaterialLayerInfo* layer;
auto base = static_cast<FHardwareTexture*>(mat->GetLayer(0, translation, &layer));
if (base->BindOrCreate(tex->GetTexture(), 0, clampmode, translation, layer->scaleFlags))
{
for (int i = 1; i<numLayers; i++)
{
auto systex = static_cast<FHardwareTexture*>(mat->GetLayer(i, 0, &layer));
// fixme: Upscale flags must be disabled for certain layers.
systex->BindOrCreate(layer->layerTexture, i, clampmode, 0, layer->scaleFlags);
maxbound = i;
}
}
// unbind everything from the last texture that's still active
for (int i = maxbound + 1; i <= maxBoundMaterial; i++)
{
FHardwareTexture::Unbind(i);
maxBoundMaterial = maxbound;
}
}
//==========================================================================
//
// Apply blend mode from RenderStyle
//
//==========================================================================
void FGLRenderState::ApplyBlendMode()
{
static int blendstyles[] = { GL_ZERO, GL_ONE, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR, GL_DST_ALPHA, GL_ONE_MINUS_DST_ALPHA };
static int renderops[] = { 0, GL_FUNC_ADD, GL_FUNC_SUBTRACT, GL_FUNC_REVERSE_SUBTRACT, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
int srcblend = blendstyles[mRenderStyle.SrcAlpha%STYLEALPHA_MAX];
int dstblend = blendstyles[mRenderStyle.DestAlpha%STYLEALPHA_MAX];
int blendequation = renderops[mRenderStyle.BlendOp & 15];
if (blendequation == -1) // This was a fuzz style.
{
srcblend = GL_DST_COLOR;
dstblend = GL_ONE_MINUS_SRC_ALPHA;
blendequation = GL_FUNC_ADD;
}
// Checks must be disabled until all draw code has been converted.
//if (srcblend != stSrcBlend || dstblend != stDstBlend)
{
stSrcBlend = srcblend;
stDstBlend = dstblend;
glBlendFunc(srcblend, dstblend);
}
//if (blendequation != stBlendEquation)
{
stBlendEquation = blendequation;
glBlendEquation(blendequation);
}
}
//==========================================================================
//
// API dependent draw calls
//
//==========================================================================
static int dt2gl[] = { GL_POINTS, GL_LINES, GL_TRIANGLES, GL_TRIANGLE_FAN, GL_TRIANGLE_STRIP };
void FGLRenderState::Draw(int dt, int index, int count, bool apply)
{
if (apply)
{
Apply();
}
drawcalls.Clock();
glDrawArrays(dt2gl[dt], index, count);
drawcalls.Unclock();
}
void FGLRenderState::DrawIndexed(int dt, int index, int count, bool apply)
{
if (apply)
{
Apply();
}
drawcalls.Clock();
glDrawElements(dt2gl[dt], count, GL_UNSIGNED_INT, (void*)(intptr_t)(index * sizeof(uint32_t)));
drawcalls.Unclock();
}
void FGLRenderState::SetDepthMask(bool on)
{
glDepthMask(on);
}
void FGLRenderState::SetDepthFunc(int func)
{
static int df2gl[] = { GL_LESS, GL_LEQUAL, GL_ALWAYS };
glDepthFunc(df2gl[func]);
}
void FGLRenderState::SetDepthRange(float min, float max)
{
glDepthRange(min, max);
}
void FGLRenderState::SetColorMask(bool r, bool g, bool b, bool a)
{
glColorMask(r, g, b, a);
}
void FGLRenderState::SetStencil(int offs, int op, int flags = -1)
{
static int op2gl[] = { GL_KEEP, GL_INCR, GL_DECR };
glStencilFunc(GL_EQUAL, screen->stencilValue + offs, ~0); // draw sky into stencil
glStencilOp(GL_KEEP, GL_KEEP, op2gl[op]); // this stage doesn't modify the stencil
if (flags != -1)
{
bool cmon = !(flags & SF_ColorMaskOff);
glColorMask(cmon, cmon, cmon, cmon); // don't write to the graphics buffer
glDepthMask(!(flags & SF_DepthMaskOff));
}
}
void FGLRenderState::ToggleState(int state, bool on)
{
if (on)
{
glEnable(state);
}
else
{
glDisable(state);
}
}
void FGLRenderState::SetCulling(int mode)
{
if (mode != Cull_None)
{
glEnable(GL_CULL_FACE);
glFrontFace(mode == Cull_CCW ? GL_CCW : GL_CW);
}
else
{
glDisable(GL_CULL_FACE);
}
}
void FGLRenderState::EnableClipDistance(int num, bool state)
{
// Update the viewpoint-related clip plane setting.
if (!(gl.flags & RFL_NO_CLIP_PLANES))
{
ToggleState(GL_CLIP_DISTANCE0 + num, state);
}
}
void FGLRenderState::Clear(int targets)
{
// This always clears to default values.
int gltarget = 0;
if (targets & CT_Depth)
{
gltarget |= GL_DEPTH_BUFFER_BIT;
glClearDepth(1);
}
if (targets & CT_Stencil)
{
gltarget |= GL_STENCIL_BUFFER_BIT;
glClearStencil(0);
}
if (targets & CT_Color)
{
gltarget |= GL_COLOR_BUFFER_BIT;
glClearColor(screen->mSceneClearColor[0], screen->mSceneClearColor[1], screen->mSceneClearColor[2], screen->mSceneClearColor[3]);
}
glClear(gltarget);
}
void FGLRenderState::EnableStencil(bool on)
{
ToggleState(GL_STENCIL_TEST, on);
}
void FGLRenderState::SetScissor(int x, int y, int w, int h)
{
if (w > -1)
{
glEnable(GL_SCISSOR_TEST);
glScissor(x, y, w, h);
}
else
{
glDisable(GL_SCISSOR_TEST);
}
}
void FGLRenderState::SetViewport(int x, int y, int w, int h)
{
glViewport(x, y, w, h);
}
void FGLRenderState::EnableDepthTest(bool on)
{
ToggleState(GL_DEPTH_TEST, on);
}
void FGLRenderState::EnableMultisampling(bool on)
{
ToggleState(GL_MULTISAMPLE, on);
}
void FGLRenderState::EnableLineSmooth(bool on)
{
ToggleState(GL_LINE_SMOOTH, on);
}
//==========================================================================
//
//
//
//==========================================================================
void FGLRenderState::ClearScreen()
{
bool multi = !!glIsEnabled(GL_MULTISAMPLE);
screen->mViewpoints->Set2D(*this, SCREENWIDTH, SCREENHEIGHT);
SetColor(0, 0, 0);
Apply();
glDisable(GL_MULTISAMPLE);
glDisable(GL_DEPTH_TEST);
glDrawArrays(GL_TRIANGLE_STRIP, FFlatVertexBuffer::FULLSCREEN_INDEX, 4);
glEnable(GL_DEPTH_TEST);
if (multi) glEnable(GL_MULTISAMPLE);
}
//==========================================================================
//
// Below are less frequently altrered state settings which do not get
// buffered by the state object, but set directly instead.
//
//==========================================================================
bool FGLRenderState::SetDepthClamp(bool on)
{
bool res = mLastDepthClamp;
if (!on) glDisable(GL_DEPTH_CLAMP);
else glEnable(GL_DEPTH_CLAMP);
mLastDepthClamp = on;
return res;
}
}

152
src/rendering/gl/renderer/gl_renderstate.h
View file

@ -1,152 +0,0 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2009-2016 Christoph Oelckers
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
#ifndef __GL_RENDERSTATE_H
#define __GL_RENDERSTATE_H
#include <string.h>
#include "gl_interface.h"
#include "matrix.h"
#include "hwrenderer/scene//hw_drawstructs.h"
#include "hw_renderstate.h"
#include "hw_material.h"
#include "c_cvars.h"
#include "r_defs.h"
#include "r_data/r_translate.h"
#include "g_levellocals.h"
namespace OpenGLRenderer
{
class FShader;
struct HWSectorPlane;
class FGLRenderState final : public FRenderState
{
uint8_t mLastDepthClamp : 1;
float mGlossiness, mSpecularLevel;
float mShaderTimer;
int mEffectState;
int mTempTM = TM_NORMAL;
FRenderStyle stRenderStyle;
int stSrcBlend, stDstBlend;
bool stAlphaTest;
bool stSplitEnabled;
int stBlendEquation;
FShader *activeShader;
int mNumDrawBuffers = 1;
bool ApplyShader();
void ApplyState();
// Texture binding state
FMaterial *lastMaterial = nullptr;
int lastClamp = 0;
int lastTranslation = 0;
int maxBoundMaterial = -1;
size_t mLastMappedLightIndex = SIZE_MAX;
IVertexBuffer *mCurrentVertexBuffer;
int mCurrentVertexOffsets[2]; // one per binding point
IIndexBuffer *mCurrentIndexBuffer;
public:
FGLRenderState()
{
Reset();
}
void Reset();
void ClearLastMaterial()
{
lastMaterial = nullptr;
}
void ApplyMaterial(FMaterial *mat, int clampmode, int translation, int overrideshader);
void Apply();
void ApplyBuffers();
void ApplyBlendMode();
void ResetVertexBuffer()
{
// forces rebinding with the next 'apply' call.
mCurrentVertexBuffer = nullptr;
mCurrentIndexBuffer = nullptr;
}
void SetSpecular(float glossiness, float specularLevel)
{
mGlossiness = glossiness;
mSpecularLevel = specularLevel;
}
void EnableDrawBuffers(int count, bool apply = false) override
{
count = MIN(count, 3);
if (mNumDrawBuffers != count)
{
static GLenum buffers[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
glDrawBuffers(count, buffers);
mNumDrawBuffers = count;
}
if (apply) Apply();
}
void ToggleState(int state, bool on);
void ClearScreen() override;
void Draw(int dt, int index, int count, bool apply = true) override;
void DrawIndexed(int dt, int index, int count, bool apply = true) override;
bool SetDepthClamp(bool on) override;
void SetDepthMask(bool on) override;
void SetDepthFunc(int func) override;
void SetDepthRange(float min, float max) override;
void SetColorMask(bool r, bool g, bool b, bool a) override;
void SetStencil(int offs, int op, int flags) override;
void SetCulling(int mode) override;
void EnableClipDistance(int num, bool state) override;
void Clear(int targets) override;
void EnableStencil(bool on) override;
void SetScissor(int x, int y, int w, int h) override;
void SetViewport(int x, int y, int w, int h) override;
void EnableDepthTest(bool on) override;
void EnableMultisampling(bool on) override;
void EnableLineSmooth(bool on) override;
};
extern FGLRenderState gl_RenderState;
}
#endif

6
src/rendering/gl/renderer/gl_stereo3d.cpp
View file

@ -27,13 +27,13 @@
#include "gl_system.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl_renderbuffers.h"
#include "hw_vrmodes.h"
#include "gl/system/gl_framebuffer.h"
#include "gl/renderer/gl_postprocessstate.h"
#include "gl_postprocessstate.h"
#include "gl/system/gl_framebuffer.h"
#include "gl/shaders/gl_shaderprogram.h"
#include "gl/system/gl_buffers.h"
#include "gl_buffers.h"
#include "menu/menu.h"
EXTERN_CVAR(Int, vr_mode)

2
src/rendering/gl/shaders/gl_shader.cpp
View file

@ -41,7 +41,7 @@
#include "hw_lightbuffer.h"
#include "gl_interface.h"
#include "gl/system/gl_debug.h"
#include "gl_debug.h"
#include "matrix.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/shaders/gl_shader.h"

2
src/rendering/gl/shaders/gl_shader.h
View file

@ -23,7 +23,7 @@
#ifndef __GL_SHADERS_H__
#define __GL_SHADERS_H__
#include "gl/renderer/gl_renderstate.h"
#include "gl_renderstate.h"
#include "name.h"
extern bool gl_shaderactive;

44
src/rendering/gl/shaders/gl_shaderprogram.cpp
View file

@ -1,35 +1,29 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2016 Magnus Norddahl
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
/*
** gl_shaderprogram.cpp
** GLSL shader program compile and link
** Postprocessing framework
** Copyright (c) 2016-2020 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
*/
#include "gl_system.h"
#include "v_video.h"
#include "gl_interface.h"
#include "hw_cvars.h"
#include "gl/system/gl_debug.h"
#include "gl_debug.h"
#include "gl/shaders/gl_shaderprogram.h"
#include "hwrenderer/utility/hw_shaderpatcher.h"
#include "filesystem.h"
@ -268,7 +262,7 @@ FString FShaderProgram::PatchShader(ShaderType type, const FString &code, const
// If we have 4.2, always use it because it adds important new syntax.
if (maxGlslVersion < 420 && gl.glslversion >= 4.2f) maxGlslVersion = 420;
int shaderVersion = MIN((int)round(gl.glslversion * 10) * 10, maxGlslVersion);
int shaderVersion = std::min((int)round(gl.glslversion * 10) * 10, maxGlslVersion);
patchedCode.AppendFormat("#version %d\n", shaderVersion);
// TODO: Find some way to add extension requirements to the patching

223
src/rendering/gl/system/gl_buffers.cpp
View file

@ -1,223 +0,0 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2018 Christoph Oelckers
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
/*
** Low level vertex buffer class
**
**/
#include "gl_system.h"
#include "gl_buffers.h"
#include "gl/renderer/gl_renderstate.h"
#include "v_video.h"
namespace OpenGLRenderer
{
//==========================================================================
//
// basic buffer implementation
//
//==========================================================================
static inline void InvalidateBufferState()
{
gl_RenderState.ResetVertexBuffer(); // force rebinding of buffers on next Apply call.
}
GLBuffer::GLBuffer(int usetype)
: mUseType(usetype)
{
glGenBuffers(1, &mBufferId);
}
GLBuffer::~GLBuffer()
{
if (mBufferId != 0)
{
glBindBuffer(mUseType, mBufferId);
glUnmapBuffer(mUseType);
glBindBuffer(mUseType, 0);
glDeleteBuffers(1, &mBufferId);
}
}
void GLBuffer::Bind()
{
glBindBuffer(mUseType, mBufferId);
}
void GLBuffer::SetData(size_t size, const void *data, bool staticdata)
{
Bind();
if (data != nullptr)
{
glBufferData(mUseType, size, data, staticdata? GL_STATIC_DRAW : GL_STREAM_DRAW);
}
else
{
mPersistent = screen->BuffersArePersistent() && !staticdata;
if (mPersistent)
{
glBufferStorage(mUseType, size, nullptr, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
map = glMapBufferRange(mUseType, 0, size, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
}
else
{
glBufferData(mUseType, size, nullptr, staticdata ? GL_STATIC_DRAW : GL_STREAM_DRAW);
map = nullptr;
}
if (!staticdata) nomap = false;
}
buffersize = size;
InvalidateBufferState();
}
void GLBuffer::SetSubData(size_t offset, size_t size, const void *data)
{
Bind();
glBufferSubData(mUseType, offset, size, data);
}
void GLBuffer::Map()
{
assert(nomap == false); // do not allow mapping of static buffers. Vulkan cannot do that so it should be blocked in OpenGL, too.
if (!mPersistent && !nomap)
{
Bind();
map = (FFlatVertex*)glMapBufferRange(mUseType, 0, buffersize, GL_MAP_WRITE_BIT|GL_MAP_UNSYNCHRONIZED_BIT);
InvalidateBufferState();
}
}
void GLBuffer::Unmap()
{
assert(nomap == false);
if (!mPersistent && map != nullptr)
{
Bind();
glUnmapBuffer(mUseType);
InvalidateBufferState();
map = nullptr;
}
}
void *GLBuffer::Lock(unsigned int size)
{
// This initializes this buffer as a static object with no data.
SetData(size, nullptr, true);
return glMapBufferRange(mUseType, 0, size, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT | GL_MAP_UNSYNCHRONIZED_BIT);
}
void GLBuffer::Unlock()
{
Bind();
glUnmapBuffer(mUseType);
InvalidateBufferState();
}
void GLBuffer::Resize(size_t newsize)
{
assert(!nomap); // only mappable buffers can be resized.
if (newsize > buffersize && !nomap)
{
// reallocate the buffer with twice the size
unsigned int oldbuffer = mBufferId;
// first unmap the old buffer
Bind();
glUnmapBuffer(mUseType);
glGenBuffers(1, &mBufferId);
SetData(newsize, nullptr, false);
glBindBuffer(GL_COPY_READ_BUFFER, oldbuffer);
// copy contents and delete the old buffer.
glCopyBufferSubData(GL_COPY_READ_BUFFER, mUseType, 0, 0, buffersize);
glBindBuffer(GL_COPY_READ_BUFFER, 0);
glDeleteBuffers(1, &oldbuffer);
buffersize = newsize;
InvalidateBufferState();
}
}
//===========================================================================
//
// Vertex buffer implementation
//
//===========================================================================
void GLVertexBuffer::SetFormat(int numBindingPoints, int numAttributes, size_t stride, const FVertexBufferAttribute *attrs)
{
static int VFmtToGLFmt[] = { GL_FLOAT, GL_FLOAT, GL_FLOAT, GL_FLOAT, GL_UNSIGNED_BYTE, GL_INT_2_10_10_10_REV };
static uint8_t VFmtToSize[] = {4, 3, 2, 1, 4, 4};
mStride = stride;
mNumBindingPoints = numBindingPoints;
for(int i = 0; i < numAttributes; i++)
{
if (attrs[i].location >= 0 && attrs[i].location < VATTR_MAX)
{
auto & attrinf = mAttributeInfo[attrs[i].location];
attrinf.format = VFmtToGLFmt[attrs[i].format];
attrinf.size = VFmtToSize[attrs[i].format];
attrinf.offset = attrs[i].offset;
attrinf.bindingpoint = attrs[i].binding;
}
}
}
void GLVertexBuffer::Bind(int *offsets)
{
int i = 0;
// This is what gets called from RenderState.Apply. It shouldn't be called anywhere else if the render state is in use
GLBuffer::Bind();
for(auto &attrinf : mAttributeInfo)
{
if (attrinf.size == 0)
{
glDisableVertexAttribArray(i);
}
else
{
glEnableVertexAttribArray(i);
size_t ofs = offsets == nullptr ? attrinf.offset : attrinf.offset + mStride * offsets[attrinf.bindingpoint];
glVertexAttribPointer(i, attrinf.size, attrinf.format, attrinf.format != GL_FLOAT, (GLsizei)mStride, (void*)(intptr_t)ofs);
}
i++;
}
}
void GLDataBuffer::BindRange(FRenderState *state, size_t start, size_t length)
{
glBindBufferRange(mUseType, mBindingPoint, mBufferId, start, length);
}
void GLDataBuffer::BindBase()
{
glBindBufferBase(mUseType, mBindingPoint, mBufferId);
}
}

73
src/rendering/gl/system/gl_buffers.h
View file

@ -1,73 +0,0 @@
#pragma once
#include "hwrenderer/data/buffers.h"
#ifdef _MSC_VER
// silence bogus warning C4250: 'GLVertexBuffer': inherits 'GLBuffer::GLBuffer::SetData' via dominance
// According to internet infos, the warning is erroneously emitted in this case.
#pragma warning(disable:4250)
#endif
namespace OpenGLRenderer
{
class GLBuffer : virtual public IBuffer
{
protected:
const int mUseType;
unsigned int mBufferId;
int mAllocationSize = 0;
bool mPersistent = false;
bool nomap = true;
GLBuffer(int usetype);
~GLBuffer();
void SetData(size_t size, const void *data, bool staticdata) override;
void SetSubData(size_t offset, size_t size, const void *data) override;
void Map() override;
void Unmap() override;
void Resize(size_t newsize) override;
void *Lock(unsigned int size) override;
void Unlock() override;
public:
void Bind();
};
class GLVertexBuffer : public IVertexBuffer, public GLBuffer
{
// If this could use the modern (since GL 4.3) binding system, things would be simpler... :(
struct GLVertexBufferAttribute
{
int bindingpoint;
int format;
int size;
int offset;
};
int mNumBindingPoints;
GLVertexBufferAttribute mAttributeInfo[VATTR_MAX] = {}; // Thanks to OpenGL's state system this needs to contain info about every attribute that may ever be in use throughout the entire renderer.
size_t mStride = 0;
public:
GLVertexBuffer() : GLBuffer(GL_ARRAY_BUFFER) {}
void SetFormat(int numBindingPoints, int numAttributes, size_t stride, const FVertexBufferAttribute *attrs) override;
void Bind(int *offsets);
};
class GLIndexBuffer : public IIndexBuffer, public GLBuffer
{
public:
GLIndexBuffer() : GLBuffer(GL_ELEMENT_ARRAY_BUFFER) {}
};
class GLDataBuffer : public IDataBuffer, public GLBuffer
{
int mBindingPoint;
public:
GLDataBuffer(int bindingpoint, bool is_ssbo) : GLBuffer(is_ssbo? GL_SHADER_STORAGE_BUFFER : GL_UNIFORM_BUFFER), mBindingPoint(bindingpoint) {}
void BindRange(FRenderState* state, size_t start, size_t length);
void BindBase();
};
}

370
src/rendering/gl/system/gl_debug.cpp
View file

@ -1,370 +0,0 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2016 Magnus Norddahl
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
/*
** gl_debig.cpp
** OpenGL debugging support functions
**
*/
#include "templates.h"
#include "gl_system.h"
#include "gl/system/gl_debug.h"
#include "stats.h"
#include <set>
#include <string>
#include <vector>
CUSTOM_CVAR(Int, gl_debug_level, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
{
if (!OpenGLRenderer::FGLDebug::HasDebugApi())
{
Printf("No OpenGL debug support detected.\n");
}
}
CVAR(Bool, gl_debug_breakpoint, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
extern bool gpuStatActive;
extern bool keepGpuStatActive;
extern FString gpuStatOutput;
namespace OpenGLRenderer
{
namespace
{
std::vector<std::pair<FString, GLuint>> timeElapsedQueries;
}
//-----------------------------------------------------------------------------
//
// Updates OpenGL debugging state
//
//-----------------------------------------------------------------------------
void FGLDebug::Update()
{
gpuStatOutput = "";
for (auto &query : timeElapsedQueries)
{
GLuint timeElapsed = 0;
glGetQueryObjectuiv(query.second, GL_QUERY_RESULT, &timeElapsed);
glDeleteQueries(1, &query.second);
FString out;
out.Format("%s=%04.2f ms\n", query.first.GetChars(), timeElapsed / 1000000.0f);
gpuStatOutput += out;
}
timeElapsedQueries.clear();
gpuStatActive = keepGpuStatActive;
keepGpuStatActive = false;
if (!HasDebugApi())
return;
SetupBreakpointMode();
UpdateLoggingLevel();
OutputMessageLog();
}
//-----------------------------------------------------------------------------
//
// Label objects so they are referenced by name in debug messages and in
// OpenGL debuggers (renderdoc)
//
//-----------------------------------------------------------------------------
void FGLDebug::LabelObject(GLenum type, GLuint handle, const char *name)
{
if (HasDebugApi() && gl_debug_level != 0)
{
glObjectLabel(type, handle, -1, name);
}
}
void FGLDebug::LabelObjectPtr(void *ptr, const char *name)
{
if (HasDebugApi() && gl_debug_level != 0)
{
glObjectPtrLabel(ptr, -1, name);
}
}
//-----------------------------------------------------------------------------
//
// Marks which render pass/group is executing commands so that debuggers can
// display this information
//
//-----------------------------------------------------------------------------
void FGLDebug::PushGroup(const FString &name)
{
if (HasDebugApi() && gl_debug_level != 0)
{
glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 0, (GLsizei)name.Len(), name.GetChars());
}
if (gpuStatActive)
{
GLuint queryHandle = 0;
glGenQueries(1, &queryHandle);
glBeginQuery(GL_TIME_ELAPSED, queryHandle);
timeElapsedQueries.push_back({ name, queryHandle });
}
}
void FGLDebug::PopGroup()
{
if (HasDebugApi() && gl_debug_level != 0)
{
glPopDebugGroup();
}
if (gpuStatActive)
{
glEndQuery(GL_TIME_ELAPSED);
}
}
//-----------------------------------------------------------------------------
//
// Turns on synchronous debugging on and off based on gl_debug_breakpoint
//
// Allows getting the debugger to break exactly at the OpenGL function emitting
// a message.
//
//-----------------------------------------------------------------------------
void FGLDebug::SetupBreakpointMode()
{
if (mBreakpointMode != gl_debug_breakpoint)
{
if (gl_debug_breakpoint)
{
glDebugMessageCallback(&FGLDebug::DebugCallback, this);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
}
else
{
glDebugMessageCallback(nullptr, nullptr);
glDisable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
}
mBreakpointMode = gl_debug_breakpoint;
}
}
//-----------------------------------------------------------------------------
//
// Tells OpenGL which debug messages we are interested in
//
//-----------------------------------------------------------------------------
void FGLDebug::UpdateLoggingLevel()
{
const GLenum level = gl_debug_level;
if (level != mCurrentLevel)
{
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_HIGH, 0, nullptr, level > 0);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_MEDIUM, 0, nullptr, level > 1);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_LOW, 0, nullptr, level > 2);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_NOTIFICATION, 0, nullptr, level > 3);
mCurrentLevel = level;
}
}
//-----------------------------------------------------------------------------
//
// The log may already contain entries for a debug level we are no longer
// interested in..
//
//-----------------------------------------------------------------------------
bool FGLDebug::IsFilteredByDebugLevel(GLenum severity)
{
int severityLevel = 0;
switch (severity)
{
case GL_DEBUG_SEVERITY_HIGH: severityLevel = 1; break;
case GL_DEBUG_SEVERITY_MEDIUM: severityLevel = 2; break;
case GL_DEBUG_SEVERITY_LOW: severityLevel = 3; break;
case GL_DEBUG_SEVERITY_NOTIFICATION: severityLevel = 4; break;
}
return severityLevel > (int)gl_debug_level;
}
//-----------------------------------------------------------------------------
//
// Prints all logged messages to the console
//
//-----------------------------------------------------------------------------
void FGLDebug::OutputMessageLog()
{
if (mCurrentLevel <= 0)
return;
GLint maxDebugMessageLength = 0;
glGetIntegerv(GL_MAX_DEBUG_MESSAGE_LENGTH, &maxDebugMessageLength);
const int maxMessages = 50;
const int messageLogSize = maxMessages * maxDebugMessageLength;
TArray<GLenum> sources, types, severities;
TArray<GLuint> ids;
TArray<GLsizei> lengths;
TArray<GLchar> messageLog;
sources.Resize(maxMessages);
types.Resize(maxMessages);
severities.Resize(maxMessages);
ids.Resize(maxMessages);
lengths.Resize(maxMessages);
messageLog.Resize(messageLogSize);
while (true)
{
GLuint numMessages = glGetDebugMessageLog(maxMessages, messageLogSize, &sources[0], &types[0], &ids[0], &severities[0], &lengths[0], &messageLog[0]);
if (numMessages <= 0) break;
GLsizei offset = 0;
for (GLuint i = 0; i < numMessages; i++)
{
if (!IsFilteredByDebugLevel(severities[i]))
PrintMessage(sources[i], types[i], ids[i], severities[i], lengths[i], &messageLog[offset]);
offset += lengths[i];
}
}
}
//-----------------------------------------------------------------------------
//
// Print a single message to the console
//
//-----------------------------------------------------------------------------
void FGLDebug::PrintMessage(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message)
{
if (type == GL_DEBUG_TYPE_PUSH_GROUP || type == GL_DEBUG_TYPE_POP_GROUP)
return;
const int maxMessages = 50;
static int messagesPrinted = 0;
if (messagesPrinted > maxMessages)
return;
FString msg(message, length);
static std::set<std::string> seenMessages;
bool alreadySeen = !seenMessages.insert(msg.GetChars()).second;
if (alreadySeen)
return;
messagesPrinted++;
if (messagesPrinted == maxMessages)
{
Printf("Max OpenGL debug messages reached. Suppressing further output.\n");
}
else if (messagesPrinted < maxMessages)
{
FString sourceStr = SourceToString(source);
FString typeStr = TypeToString(type);
FString severityStr = SeverityToString(severity);
if (type != GL_DEBUG_TYPE_OTHER)
Printf("[%s] %s, %s: %s\n", sourceStr.GetChars(), severityStr.GetChars(), typeStr.GetChars(), msg.GetChars());
else
Printf("[%s] %s: %s\n", sourceStr.GetChars(), severityStr.GetChars(), msg.GetChars());
}
}
//-----------------------------------------------------------------------------
//
// OpenGL callback function used when synchronous debugging is enabled
//
//-----------------------------------------------------------------------------
void FGLDebug::DebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam)
{
if (IsFilteredByDebugLevel(severity))
return;
PrintMessage(source, type, id, severity, length, message);
assert(severity == GL_DEBUG_SEVERITY_NOTIFICATION);
}
//-----------------------------------------------------------------------------
//
// Enum to string helpers
//
//-----------------------------------------------------------------------------
FString FGLDebug::SourceToString(GLenum source)
{
FString s;
switch (source)
{
case GL_DEBUG_SOURCE_API: s = "api"; break;
case GL_DEBUG_SOURCE_WINDOW_SYSTEM: s = "window system"; break;
case GL_DEBUG_SOURCE_SHADER_COMPILER: s = "shader compiler"; break;
case GL_DEBUG_SOURCE_THIRD_PARTY: s = "third party"; break;
case GL_DEBUG_SOURCE_APPLICATION: s = "application"; break;
case GL_DEBUG_SOURCE_OTHER: s = "other"; break;
default: s.Format("%d", (int)source);
}
return s;
}
FString FGLDebug::TypeToString(GLenum type)
{
FString s;
switch (type)
{
case GL_DEBUG_TYPE_ERROR: s = "error"; break;
case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR: s = "deprecated"; break;
case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR: s = "undefined"; break;
case GL_DEBUG_TYPE_PORTABILITY: s = "portability"; break;
case GL_DEBUG_TYPE_PERFORMANCE: s = "performance"; break;
case GL_DEBUG_TYPE_MARKER: s = "marker"; break;
case GL_DEBUG_TYPE_PUSH_GROUP: s = "push group"; break;
case GL_DEBUG_TYPE_POP_GROUP: s = "pop group"; break;
case GL_DEBUG_TYPE_OTHER: s = "other"; break;
default: s.Format("%d", (int)type);
}
return s;
}
FString FGLDebug::SeverityToString(GLenum severity)
{
FString s;
switch (severity)
{
case GL_DEBUG_SEVERITY_LOW: s = "low severity"; break;
case GL_DEBUG_SEVERITY_MEDIUM: s = "medium severity"; break;
case GL_DEBUG_SEVERITY_HIGH: s = "high severity"; break;
case GL_DEBUG_SEVERITY_NOTIFICATION: s = "notification"; break;
default: s.Format("%d", (int)severity);
}
return s;
}
}

45
src/rendering/gl/system/gl_debug.h
View file

@ -1,45 +0,0 @@
#ifndef __GL_DEBUG_H
#define __GL_DEBUG_H
#include <string.h>
#include "gl_interface.h"
#include "c_cvars.h"
#include "r_defs.h"
#include "v_video.h"
namespace OpenGLRenderer
{
class FGLDebug
{
public:
void Update();
static void LabelObject(GLenum type, GLuint handle, const char *name);
static void LabelObjectPtr(void *ptr, const char *name);
static void PushGroup(const FString &name);
static void PopGroup();
static bool HasDebugApi() { return (gl.flags & RFL_DEBUG) != 0; }
private:
void SetupBreakpointMode();
void UpdateLoggingLevel();
void OutputMessageLog();
static bool IsFilteredByDebugLevel(GLenum severity);
static void PrintMessage(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message);
static void APIENTRY DebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam);
static FString SourceToString(GLenum source);
static FString TypeToString(GLenum type);
static FString SeverityToString(GLenum severity);
GLenum mCurrentLevel = 0;
bool mBreakpointMode = false;
};
}
#endif

86
src/rendering/gl/system/gl_framebuffer.cpp
View file

@ -1,30 +1,37 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2010-2016 Christoph Oelckers
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
/*
** gl_framebuffer.cpp
** Implementation of the non-hardware specific parts of the
** OpenGL frame buffer
**
*/
**---------------------------------------------------------------------------
** Copyright 2010-2020 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "gl_system.h"
#include "v_video.h"
@ -35,8 +42,8 @@
#include "gl_interface.h"
#include "gl/system/gl_framebuffer.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl/textures/gl_samplers.h"
#include "gl_renderbuffers.h"
#include "gl_samplers.h"
#include "hwrenderer/utility/hw_clock.h"
#include "hw_vrmodes.h"
#include "hwrenderer/models/hw_models.h"
@ -49,8 +56,10 @@
#include "r_videoscale.h"
#include "gl_buffers.h"
#include "swrenderer/r_swscene.h"
#include "gl_postprocessstate.h"
#include "flatvertices.h"
#include "hw_cvars.h"
EXTERN_CVAR (Bool, vid_vsync)
EXTERN_CVAR(Bool, r_drawvoxels)
@ -412,7 +421,34 @@ void OpenGLFrameBuffer::SetSceneRenderTarget(bool useSSAO)
void OpenGLFrameBuffer::UpdateShadowMap()
{
GLRenderer->UpdateShadowMap();
if (mShadowMap.PerformUpdate())
{
FGLDebug::PushGroup("ShadowMap");
FGLPostProcessState savedState;
static_cast<GLDataBuffer*>(screen->mShadowMap.mLightList)->BindBase();
static_cast<GLDataBuffer*>(screen->mShadowMap.mNodesBuffer)->BindBase();
static_cast<GLDataBuffer*>(screen->mShadowMap.mLinesBuffer)->BindBase();
GLRenderer->mBuffers->BindShadowMapFB();
GLRenderer->mShadowMapShader->Bind();
GLRenderer->mShadowMapShader->Uniforms->ShadowmapQuality = gl_shadowmap_quality;
GLRenderer->mShadowMapShader->Uniforms->NodesCount = screen->mShadowMap.NodesCount();
GLRenderer->mShadowMapShader->Uniforms.SetData();
static_cast<GLDataBuffer*>(GLRenderer->mShadowMapShader->Uniforms.GetBuffer())->BindBase();
glViewport(0, 0, gl_shadowmap_quality, 1024);
GLRenderer->RenderScreenQuad();
const auto& viewport = screen->mScreenViewport;
glViewport(viewport.left, viewport.top, viewport.width, viewport.height);
GLRenderer->mBuffers->BindShadowMapTexture(16);
FGLDebug::PopGroup();
screen->mShadowMap.FinishUpdate();
}
}
void OpenGLFrameBuffer::WaitForCommands(bool finish)

360
src/rendering/gl/textures/gl_hwtexture.cpp
View file

@ -1,360 +0,0 @@
/*
** gl_hwtexture.cpp
** GL texture abstraction
**
**---------------------------------------------------------------------------
** Copyright 2019 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
**
*/
#include "gl_system.h"
#include "templates.h"
#include "c_cvars.h"
#include "doomtype.h"
#include "r_data/colormaps.h"
#include "hw_material.h"
#include "gl_interface.h"
#include "hw_cvars.h"
#include "gl/system/gl_debug.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_renderstate.h"
#include "gl/textures/gl_samplers.h"
namespace OpenGLRenderer
{
TexFilter_s TexFilter[]={
{GL_NEAREST, GL_NEAREST, false},
{GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST, true},
{GL_LINEAR, GL_LINEAR, false},
{GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR, true},
{GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR, true},
{GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST, true},
{GL_LINEAR_MIPMAP_LINEAR, GL_NEAREST, true},
};
int TexFormat[]={
GL_RGBA8,
GL_RGB5_A1,
GL_RGBA4,
GL_RGBA2,
// [BB] Added compressed texture formats.
GL_COMPRESSED_RGBA_ARB,
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
};
//===========================================================================
//
// Static texture data
//
//===========================================================================
unsigned int FHardwareTexture::lastbound[FHardwareTexture::MAX_TEXTURES];
//===========================================================================
//
// Loads the texture image into the hardware
//
// NOTE: For some strange reason I was unable to find the source buffer
// should be one line higher than the actual texture. I got extremely
// strange crashes deep inside the GL driver when I didn't do it!
//
//===========================================================================
unsigned int FHardwareTexture::CreateTexture(unsigned char * buffer, int w, int h, int texunit, bool mipmap, const char *name)
{
int rh,rw;
int texformat = GL_RGBA8;// TexFormat[gl_texture_format];
bool deletebuffer=false;
/*
if (forcenocompression)
{
texformat = GL_RGBA8;
}
*/
bool firstCall = glTexID == 0;
if (firstCall)
{
glGenTextures(1, &glTexID);
}
int textureBinding = UINT_MAX;
if (texunit == -1) glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
if (texunit > 0) glActiveTexture(GL_TEXTURE0+texunit);
if (texunit >= 0) lastbound[texunit] = glTexID;
glBindTexture(GL_TEXTURE_2D, glTexID);
FGLDebug::LabelObject(GL_TEXTURE, glTexID, name);
rw = GetTexDimension(w);
rh = GetTexDimension(h);
if (glBufferID > 0)
{
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
buffer = nullptr;
}
else if (!buffer)
{
// The texture must at least be initialized if no data is present.
mipmapped = false;
buffer=(unsigned char *)calloc(4,rw * (rh+1));
deletebuffer=true;
//texheight=-h;
}
else
{
if (rw < w || rh < h)
{
// The texture is larger than what the hardware can handle so scale it down.
unsigned char * scaledbuffer=(unsigned char *)calloc(4,rw * (rh+1));
if (scaledbuffer)
{
Resize(w, h, rw, rh, buffer, scaledbuffer);
deletebuffer=true;
buffer=scaledbuffer;
}
}
}
// store the physical size.
int sourcetype;
if (glTextureBytes > 0)
{
if (glTextureBytes < 4) glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
static const int ITypes[] = { GL_R8, GL_RG8, GL_RGB8, GL_RGBA8 };
static const int STypes[] = { GL_RED, GL_RG, GL_BGR, GL_BGRA };
texformat = ITypes[glTextureBytes - 1];
sourcetype = STypes[glTextureBytes - 1];
}
else
{
sourcetype = GL_BGRA;
}
if (!firstCall && glBufferID > 0)
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, rw, rh, sourcetype, GL_UNSIGNED_BYTE, buffer);
else
glTexImage2D(GL_TEXTURE_2D, 0, texformat, rw, rh, 0, sourcetype, GL_UNSIGNED_BYTE, buffer);
if (deletebuffer && buffer) free(buffer);
else if (glBufferID)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
if (mipmap && TexFilter[gl_texture_filter].mipmapping)
{
glGenerateMipmap(GL_TEXTURE_2D);
mipmapped = true;
}
if (texunit > 0) glActiveTexture(GL_TEXTURE0);
else if (texunit == -1) glBindTexture(GL_TEXTURE_2D, textureBinding);
return glTexID;
}
//===========================================================================
//
//
//
//===========================================================================
void FHardwareTexture::AllocateBuffer(int w, int h, int texelsize)
{
int rw = GetTexDimension(w);
int rh = GetTexDimension(h);
if (texelsize < 1 || texelsize > 4) texelsize = 4;
glTextureBytes = texelsize;
bufferpitch = w;
if (rw == w || rh == h)
{
glGenBuffers(1, &glBufferID);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, glBufferID);
glBufferData(GL_PIXEL_UNPACK_BUFFER, w*h*texelsize, nullptr, GL_STREAM_DRAW);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
}
uint8_t *FHardwareTexture::MapBuffer()
{
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, glBufferID);
return (uint8_t*)glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
}
//===========================================================================
//
// Destroys the texture
//
//===========================================================================
FHardwareTexture::~FHardwareTexture()
{
if (glTexID != 0) glDeleteTextures(1, &glTexID);
if (glBufferID != 0) glDeleteBuffers(1, &glBufferID);
}
//===========================================================================
//
// Binds this patch
//
//===========================================================================
unsigned int FHardwareTexture::Bind(int texunit, bool needmipmap)
{
if (glTexID != 0)
{
if (lastbound[texunit] == glTexID) return glTexID;
lastbound[texunit] = glTexID;
if (texunit != 0) glActiveTexture(GL_TEXTURE0 + texunit);
glBindTexture(GL_TEXTURE_2D, glTexID);
// Check if we need mipmaps on a texture that was creted without them.
if (needmipmap && !mipmapped && TexFilter[gl_texture_filter].mipmapping)
{
glGenerateMipmap(GL_TEXTURE_2D);
mipmapped = true;
}
if (texunit != 0) glActiveTexture(GL_TEXTURE0);
return glTexID;
}
return 0;
}
unsigned int FHardwareTexture::GetTextureHandle(int translation)
{
return glTexID;
}
void FHardwareTexture::Unbind(int texunit)
{
if (lastbound[texunit] != 0)
{
if (texunit != 0) glActiveTexture(GL_TEXTURE0+texunit);
glBindTexture(GL_TEXTURE_2D, 0);
if (texunit != 0) glActiveTexture(GL_TEXTURE0);
lastbound[texunit] = 0;
}
}
void FHardwareTexture::UnbindAll()
{
for(int texunit = 0; texunit < 16; texunit++)
{
Unbind(texunit);
}
gl_RenderState.ClearLastMaterial();
}
//===========================================================================
//
// Creates a depth buffer for this texture
//
//===========================================================================
int FHardwareTexture::GetDepthBuffer(int width, int height)
{
if (glDepthID == 0)
{
glGenRenderbuffers(1, &glDepthID);
glBindRenderbuffer(GL_RENDERBUFFER, glDepthID);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8,
GetTexDimension(width), GetTexDimension(height));
glBindRenderbuffer(GL_RENDERBUFFER, 0);
}
return glDepthID;
}
//===========================================================================
//
// Binds this texture's surfaces to the current framrbuffer
//
//===========================================================================
void FHardwareTexture::BindToFrameBuffer(int width, int height)
{
width = GetTexDimension(width);
height = GetTexDimension(height);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, glTexID, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, GetDepthBuffer(width, height));
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, GetDepthBuffer(width, height));
}
//===========================================================================
//
// Binds a texture to the renderer
//
//===========================================================================
bool FHardwareTexture::BindOrCreate(FTexture *tex, int texunit, int clampmode, int translation, int flags)
{
int usebright = false;
bool needmipmap = (clampmode <= CLAMP_XY);
// Bind it to the system.
if (!Bind(texunit, needmipmap))
{
int w = 0, h = 0;
// Create this texture
FTextureBuffer texbuffer;
if (!tex->isHardwareCanvas())
{
texbuffer = tex->CreateTexBuffer(translation, flags | CTF_ProcessData);
w = texbuffer.mWidth;
h = texbuffer.mHeight;
}
else
{
w = tex->GetWidth();
h = tex->GetHeight();
}
if (!CreateTexture(texbuffer.mBuffer, w, h, texunit, needmipmap, "FHardwareTexture.BindOrCreate"))
{
// could not create texture
return false;
}
}
GLRenderer->mSamplerManager->Bind(texunit, clampmode, 255);
return true;
}
}

71
src/rendering/gl/textures/gl_hwtexture.h
View file

@ -1,71 +0,0 @@
#ifndef __GLTEXTURE_H
#define __GLTEXTURE_H
#ifdef LoadImage
#undef LoadImage
#endif
#define SHADED_TEXTURE -1
#define DIRECT_PALETTE -2
#include "tarray.h"
#include "gl_interface.h"
#include "hw_ihwtexture.h"
class FCanvasTexture;
namespace OpenGLRenderer
{
class FHardwareTexture : public IHardwareTexture
{
public:
static unsigned int lastbound[MAX_TEXTURES];
static int GetTexDimension(int value)
{
if (value > gl.max_texturesize) return gl.max_texturesize;
return value;
}
static void InitGlobalState() { for (int i = 0; i < MAX_TEXTURES; i++) lastbound[i] = 0; }
private:
bool forcenocompression;
unsigned int glTexID = 0;
unsigned int glDepthID = 0; // only used by camera textures
unsigned int glBufferID = 0;
int glTextureBytes = 4;
bool mipmapped = false;
int GetDepthBuffer(int w, int h);
public:
FHardwareTexture(bool nocompress)
{
forcenocompression = nocompress;
}
~FHardwareTexture();
static void Unbind(int texunit);
static void UnbindAll();
void BindToFrameBuffer(int w, int h);
unsigned int Bind(int texunit, bool needmipmap);
bool BindOrCreate(FTexture *tex, int texunit, int clampmode, int translation, int flags);
void AllocateBuffer(int w, int h, int texelsize);
uint8_t *MapBuffer();
unsigned int CreateTexture(unsigned char * buffer, int w, int h, int texunit, bool mipmap, const char *name);
unsigned int GetTextureHandle(int translation);
};
}
#endif

116
src/rendering/gl/textures/gl_samplers.cpp
View file

@ -1,116 +0,0 @@
/*
** gl_samplers.cpp
**
** Texture sampler handling
**
**---------------------------------------------------------------------------
** Copyright 2015-2019 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "gl_system.h"
#include "c_cvars.h"
#include "gl_interface.h"
#include "hw_cvars.h"
#include "gl/system/gl_debug.h"
#include "gl/renderer/gl_renderer.h"
#include "gl_samplers.h"
#include "hw_material.h"
namespace OpenGLRenderer
{
extern TexFilter_s TexFilter[];
FSamplerManager::FSamplerManager()
{
glGenSamplers(7, mSamplers);
SetTextureFilterMode();
glSamplerParameteri(mSamplers[5], GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(mSamplers[5], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameterf(mSamplers[5], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
glSamplerParameterf(mSamplers[4], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
glSamplerParameterf(mSamplers[6], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
glSamplerParameteri(mSamplers[1], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(mSamplers[2], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(mSamplers[3], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(mSamplers[3], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(mSamplers[4], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(mSamplers[4], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
for (int i = 0; i < 7; i++)
{
FString name;
name.Format("mSamplers[%d]", i);
FGLDebug::LabelObject(GL_SAMPLER, mSamplers[i], name.GetChars());
}
}
FSamplerManager::~FSamplerManager()
{
UnbindAll();
glDeleteSamplers(7, mSamplers);
}
void FSamplerManager::UnbindAll()
{
for (int i = 0; i < FHardwareTexture::MAX_TEXTURES; i++)
{
glBindSampler(i, 0);
}
}
uint8_t FSamplerManager::Bind(int texunit, int num, int lastval)
{
unsigned int samp = mSamplers[num];
glBindSampler(texunit, samp);
return 255;
}
void FSamplerManager::SetTextureFilterMode()
{
UnbindAll();
int filter = V_IsHardwareRenderer() ? gl_texture_filter : 0;
for (int i = 0; i < 4; i++)
{
glSamplerParameteri(mSamplers[i], GL_TEXTURE_MIN_FILTER, TexFilter[filter].minfilter);
glSamplerParameteri(mSamplers[i], GL_TEXTURE_MAG_FILTER, TexFilter[filter].magfilter);
glSamplerParameterf(mSamplers[i], GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_texture_filter_anisotropic);
}
glSamplerParameteri(mSamplers[4], GL_TEXTURE_MIN_FILTER, TexFilter[filter].magfilter);
glSamplerParameteri(mSamplers[4], GL_TEXTURE_MAG_FILTER, TexFilter[filter].magfilter);
glSamplerParameteri(mSamplers[6], GL_TEXTURE_MIN_FILTER, TexFilter[filter].magfilter);
glSamplerParameteri(mSamplers[6], GL_TEXTURE_MAG_FILTER, TexFilter[filter].magfilter);
}
}

30
src/rendering/gl/textures/gl_samplers.h
View file

@ -1,30 +0,0 @@
#ifndef __GL_SAMPLERS_H
#define __GL_SAMPLERS_H
#include "gl_hwtexture.h"
namespace OpenGLRenderer
{
class FSamplerManager
{
// We need 6 different samplers: 4 for the different clamping modes,
// one for 2D-textures and one for voxel textures
unsigned int mSamplers[7];
void UnbindAll();
public:
FSamplerManager();
~FSamplerManager();
uint8_t Bind(int texunit, int num, int lastval);
void SetTextureFilterMode();
};
}
#endif

1
src/rendering/vulkan/system/vk_framebuffer.cpp
View file

@ -30,6 +30,7 @@
#include "i_time.h"
#include "g_game.h"
#include "v_text.h"
#include "version.h"
#include "hwrenderer/utility/hw_clock.h"
#include "hw_vrmodes.h"