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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
parent 205350e726
commit ee6d7cf17e
3 changed files with 165 additions and 48 deletions
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69
src/gl/renderer/gl_postprocess.cpp
View file

@ -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();
}
}
//-----------------------------------------------------------------------------

13
src/gl/renderer/gl_renderer.h
View file

@ -42,6 +42,7 @@ class FPresent3DRowShader;
class F2DDrawer;
class FHardwareTexture;
class FShadowMapShader;
class PostProcessShaderInstance;
inline float DEG2RAD(float deg)
{
@ -85,6 +86,17 @@ enum
DM_SKYPORTAL
};
struct PostProcessShader
{
FString Target;
FString ShaderLumpName;
int ShaderVersion = 0;
FTexture *Texture = nullptr;
std::shared_ptr<PostProcessShaderInstance> Instance;
};
extern TArray<PostProcessShader> PostProcessShaders;
class FGLRenderer
{
public:
@ -171,6 +183,7 @@ public:
void RenderScreenQuad();
void PostProcessScene(int fixedcm);
void RunCustomPostProcessShaders(FString target);
void AmbientOccludeScene();
void UpdateCameraExposure();
void BloomScene(int fixedcm);

51
src/gl/shaders/gl_shader.cpp
View file

@ -669,22 +669,56 @@ void gl_DestroyUserShaders()
//
//==========================================================================
TArray<PostProcessShader> PostProcessShaders;
void gl_ParseHardwareShader(FScanner &sc, int deflump)
{
sc.MustGetString();
if (sc.Compare("postprocess"))
{
sc.MustGetString();
PostProcessShader shaderdesc;
shaderdesc.Target = sc.String;
sc.MustGetToken('{');
while (!sc.CheckToken('}'))
{
sc.MustGetString();
if (sc.Compare("shader"))
{
sc.MustGetString();
shaderdesc.ShaderLumpName = sc.String;
sc.MustGetNumber();
shaderdesc.ShaderVersion = sc.Number;
}
else if (sc.Compare("texture"))
{
sc.MustGetString();
FTextureID no = TexMan.CheckForTexture(sc.String, FTexture::TEX_Wall);
shaderdesc.Texture = TexMan[no];
}
}
PostProcessShaders.Push(shaderdesc);
}
else
{
int type = FTexture::TEX_Any;
bool disable_fullbright=false;
if (sc.Compare("texture")) type = FTexture::TEX_Wall;
else if (sc.Compare("flat")) type = FTexture::TEX_Flat;
else if (sc.Compare("sprite")) type = FTexture::TEX_Sprite;
else sc.UnGet();
bool disable_fullbright = false;
bool thiswad = false;
bool iwad = false;
int maplump = -1;
FString maplumpname;
float speed = 1.f;
sc.MustGetString();
if (sc.Compare("texture")) type = FTexture::TEX_Wall;
else if (sc.Compare("flat")) type = FTexture::TEX_Flat;
else if (sc.Compare("sprite")) type = FTexture::TEX_Sprite;
else sc.UnGet();
sc.MustGetString();
FTextureID no = TexMan.CheckForTexture(sc.String, type);
FTexture *tex = TexMan[no];
@ -717,7 +751,7 @@ void gl_ParseHardwareShader(FScanner &sc, int deflump)
return;
}
tex->gl_info.shaderspeed = speed;
for(unsigned i=0;i<usershaders.Size();i++)
for (unsigned i = 0; i < usershaders.Size(); i++)
{
if (!usershaders[i].CompareNoCase(maplumpname))
{
@ -727,5 +761,6 @@ void gl_ParseHardwareShader(FScanner &sc, int deflump)
}
tex->gl_info.shaderindex = usershaders.Push(maplumpname) + FIRST_USER_SHADER;
}
}
}