OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
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Added bloom shaders

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This commit is contained in:
Magnus Norddahl 2016-07-27 21:50:30 +02:00
commit 69f52cc898
16 changed files with 696 additions and 14 deletions
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74
src/gl/renderer/gl_renderbuffers.cpp
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@ -72,12 +72,37 @@ FGLRenderBuffers::FGLRenderBuffers()
FGLRenderBuffers::~FGLRenderBuffers()
{
Clear();
}
void FGLRenderBuffers::Clear()
{
for (int i = 0; i < NumBloomLevels; i++)
{
auto &level = BloomLevels[i];
if (level.HFramebuffer != 0)
glDeleteFramebuffers(1, &level.HFramebuffer);
if (level.VFramebuffer != 0)
glDeleteFramebuffers(1, &level.VFramebuffer);
if (level.HTexture != 0)
glDeleteTextures(1, &level.HTexture);
if (level.VTexture != 0)
glDeleteTextures(1, &level.VTexture);
level = FGLBloomTextureLevel();
}
if (mSceneFB != 0)
glDeleteFramebuffers(1, &mSceneFB);
if (mSceneTexture != 0)
glDeleteTextures(1, &mSceneTexture);
if (mSceneDepthStencil != 0)
glDeleteRenderbuffers(1, &mSceneDepthStencil);
mSceneFB = 0;
mSceneTexture = 0;
mSceneDepthStencil = 0;
mWidth = 0;
mHeight = 0;
}
//==========================================================================
@ -92,12 +117,9 @@ void FGLRenderBuffers::Setup(int width, int height)
if (width <= mWidth && height <= mHeight)
return;
if (mSceneFB != 0)
glDeleteFramebuffers(1, &mSceneFB);
if (mSceneTexture != 0)
glDeleteTextures(1, &mSceneTexture);
if (mSceneDepthStencil != 0)
glDeleteRenderbuffers(1, &mSceneDepthStencil);
Clear();
glActiveTexture(GL_TEXTURE0);
glGenFramebuffers(1, &mSceneFB);
glGenTextures(1, &mSceneTexture);
@ -109,15 +131,49 @@ void FGLRenderBuffers::Setup(int width, int height)
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);
glBindTexture(GL_TEXTURE_2D, 0);
glBindRenderbuffer(GL_RENDERBUFFER, mSceneDepthStencil);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, mSceneFB);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mSceneTexture, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mSceneDepthStencil);
int bloomWidth = MAX(width / 2, 1);
int bloomHeight = MAX(height / 2, 1);
for (int i = 0; i < NumBloomLevels; i++)
{
auto &level = BloomLevels[i];
level.Width = MAX(bloomWidth / 2, 1);
level.Height = MAX(bloomHeight / 2, 1);
glGenTextures(1, &level.VTexture);
glGenTextures(1, &level.HTexture);
glGenFramebuffers(1, &level.VFramebuffer);
glGenFramebuffers(1, &level.HFramebuffer);
glBindTexture(GL_TEXTURE_2D, level.VTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, level.Width, level.Height, 0, GL_RGBA, GL_FLOAT, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glBindTexture(GL_TEXTURE_2D, level.HTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, level.Width, level.Height, 0, GL_RGBA, GL_FLOAT, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glBindFramebuffer(GL_FRAMEBUFFER, level.VFramebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, level.VTexture, 0);
glBindFramebuffer(GL_FRAMEBUFFER, level.HFramebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, level.HTexture, 0);
bloomWidth = level.Width;
bloomHeight = level.Height;
}
glBindTexture(GL_TEXTURE_2D, 0);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, mOutputFB);
mWidth = width;
@ -154,6 +210,6 @@ void FGLRenderBuffers::BindOutputFB()
void FGLRenderBuffers::BindSceneTexture(int index)
{
glActiveTexture(index);
glActiveTexture(GL_TEXTURE0 + index);
glBindTexture(GL_TEXTURE_2D, mSceneTexture);
}