OrdinaryMagician/vkdoom_m
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Create a shadowmap texture and upload light list

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This commit is contained in:
Magnus Norddahl 2017-03-01 17:17:33 +01:00
commit 62c285f7b3
5 changed files with 111 additions and 7 deletions
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50
src/gl/dynlights/gl_shadowmap.cpp
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@ -28,27 +28,32 @@
#include "gl/system/gl_debug.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_postprocessstate.h"
#include "gl/renderer/gl_renderbuffers.h"
#include "gl/shaders/gl_shadowmapshader.h"
#include "r_state.h"
void FShadowMap::Clear()
{
if (mLightList != 0)
{
glDeleteBuffers(1, (GLuint*)&mLightList);
mLightList = 0;
}
mLightBSP.Clear();
}
void FShadowMap::Update()
{
TThinkerIterator<ADynamicLight> it(STAT_DLIGHT);
while (true)
{
ADynamicLight *light = it.Next();
if (!light) break;
}
UploadLights();
FGLDebug::PushGroup("ShadowMap");
FGLPostProcessState savedState;
GLRenderer->mBuffers->BindShadowMapFB();
GLRenderer->mShadowMapShader->Bind();
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, mLightList);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, mLightBSP.GetNodesBuffer());
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, mLightBSP.GetSegsBuffer());
@ -58,8 +63,41 @@ void FShadowMap::Update()
const auto &viewport = GLRenderer->mScreenViewport;
glViewport(viewport.left, viewport.top, viewport.width, viewport.height);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, 0);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, 0);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, 0);
FGLDebug::PopGroup();
}
void FShadowMap::UploadLights()
{
lights.Clear();
TThinkerIterator<ADynamicLight> it(STAT_DLIGHT);
while (true)
{
ADynamicLight *light = it.Next();
if (!light) break;
lights.Push(light->X());
lights.Push(light->Y());
lights.Push(light->Z());
lights.Push(light->GetRadius());
if (lights.Size() == 1024) // Only 1024 lights for now
break;
}
while (lights.Size() < 1024 * 4)
lights.Push(0.0f);
if (mLightList == 0)
glGenBuffers(1, (GLuint*)&mLightList);
int oldBinding = 0;
glGetIntegerv(GL_SHADER_STORAGE_BUFFER_BINDING, &oldBinding);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, mLightList);
glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(float) * lights.Size(), &lights[0], GL_STATIC_DRAW);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, oldBinding);
}