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- Add initial postprocess shader support to GLDEFS file

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This commit is contained in:
Magnus Norddahl 2017-07-03 01:26:02 +02:00
commit ee6d7cf17e
3 changed files with 156 additions and 39 deletions
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69
src/gl/renderer/gl_postprocess.cpp
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@ -149,6 +149,14 @@ CUSTOM_CVAR(Bool, gl_paltonemap_reverselookup, true, CVAR_ARCHIVE | CVAR_NOINITC
EXTERN_CVAR(Float, vid_brightness)
EXTERN_CVAR(Float, vid_contrast)
class PostProcessShaderInstance
{
public:
FShaderProgram Program;
FBufferedUniformSampler InputTexture;
FBufferedUniformSampler CustomTexture;
FHardwareTexture *HWTexture = nullptr;
};
void FGLRenderer::RenderScreenQuad()
{
@ -166,6 +174,67 @@ void FGLRenderer::PostProcessScene(int fixedcm)
ColormapScene(fixedcm);
LensDistortScene();
ApplyFXAA();
RunCustomPostProcessShaders("screen");
}
void FGLRenderer::RunCustomPostProcessShaders(FString target)
{
for (unsigned int i = 0; i < PostProcessShaders.Size(); i++)
{
PostProcessShader &shader = PostProcessShaders[i];
if (shader.Target != target)
continue;
if (!shader.Instance)
{
shader.Instance = std::make_shared<PostProcessShaderInstance>();
shader.Instance->Program.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330); // Hmm, should this use shader.shaderversion?
shader.Instance->Program.Compile(FShaderProgram::Fragment, shader.ShaderLumpName.GetChars(), "", shader.ShaderVersion);
shader.Instance->Program.SetFragDataLocation(0, "FragColor");
shader.Instance->Program.Link(shader.ShaderLumpName.GetChars());
shader.Instance->Program.SetAttribLocation(0, "PositionInProjection");
shader.Instance->InputTexture.Init(shader.Instance->Program, "InputTexture");
shader.Instance->CustomTexture.Init(shader.Instance->Program, "CustomTexture");
if (shader.Texture)
shader.Instance->HWTexture = new FHardwareTexture(shader.Texture->GetWidth(), shader.Texture->GetHeight(), false);
}
FGLDebug::PushGroup(shader.ShaderLumpName.GetChars());
FGLPostProcessState savedState;
savedState.SaveTextureBindings(2);
mBuffers->BindNextFB();
mBuffers->BindCurrentTexture(0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
shader.Instance->Program.Bind();
shader.Instance->InputTexture.Set(0);
if (shader.Instance->HWTexture)
{
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, shader.Instance->HWTexture->GetTextureHandle(0));
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);
glActiveTexture(GL_TEXTURE0);
shader.Instance->CustomTexture.Set(1);
}
RenderScreenQuad();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
mBuffers->NextTexture();
FGLDebug::PopGroup();
}
}
//-----------------------------------------------------------------------------