static void ClearQuadSetup( FRHICommandList& RHICmdList, ERHIFeatureLevel::Type FeatureLevel, bool bClearColor, int32 NumClearColors, const FLinearColor* ClearColorArray, bool bClearDepth, float Depth, bool bClearStencil, uint32 Stencil )
{
// Set new states
FBlendStateRHIParamRef BlendStateRHI;
if (NumClearColors <= 1)
{
BlendStateRHI = bClearColor
? TStaticBlendState<>::GetRHI()
: TStaticBlendState<CW_NONE>::GetRHI();
}
else
{
BlendStateRHI = bClearColor
? TStaticBlendState<>::GetRHI()
: TStaticBlendStateWriteMask<CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE>::GetRHI();
}
const FDepthStencilStateRHIParamRef DepthStencilStateRHI =
(bClearDepth && bClearStencil)
? TStaticDepthStencilState<
true, CF_Always,
true,CF_Always,SO_Replace,SO_Replace,SO_Replace,
false,CF_Always,SO_Replace,SO_Replace,SO_Replace,
0xff,0xff
>::GetRHI()
: bClearDepth
? TStaticDepthStencilState<true, CF_Always>::GetRHI()
: bClearStencil
? TStaticDepthStencilState<
false, CF_Always,
true,CF_Always,SO_Replace,SO_Replace,SO_Replace,
false,CF_Always,SO_Replace,SO_Replace,SO_Replace,
0xff,0xff
>::GetRHI()
: TStaticDepthStencilState<false, CF_Always>::GetRHI();
RHICmdList.SetRasterizerState(TStaticRasterizerState<FM_Solid, CM_None>::GetRHI());
RHICmdList.SetBlendState(BlendStateRHI);
RHICmdList.SetDepthStencilState(DepthStencilStateRHI);
auto ShaderMap = GetGlobalShaderMap(FeatureLevel);
// Set the new shaders
TShaderMapRef<TOneColorVS<true> > VertexShader(ShaderMap);
FOneColorPS* PixelShader = NULL;
// Set the shader to write to the appropriate number of render targets
// On AMD PC hardware, outputting to a color index in the shader without a matching render target set has a significant performance hit
if (NumClearColors <= 1)
{
TShaderMapRef<TOneColorPixelShaderMRT<1> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 2)
{
TShaderMapRef<TOneColorPixelShaderMRT<2> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 3)
{
TShaderMapRef<TOneColorPixelShaderMRT<3> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 4)
{
TShaderMapRef<TOneColorPixelShaderMRT<4> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 5)
{
TShaderMapRef<TOneColorPixelShaderMRT<5> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 6)
{
TShaderMapRef<TOneColorPixelShaderMRT<6> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 7)
{
TShaderMapRef<TOneColorPixelShaderMRT<7> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 8)
{
TShaderMapRef<TOneColorPixelShaderMRT<8> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, GClearMRTBoundShaderState[FMath::Max(NumClearColors - 1, 0)], GetVertexDeclarationFVector4(), *VertexShader, PixelShader);
PixelShader->SetColors(RHICmdList, ClearColorArray, NumClearColors);
}
// TODO support ExcludeRect
void DrawClearQuadMRT(FRHICommandList& RHICmdList, ERHIFeatureLevel::Type FeatureLevel, bool bClearColor, int32 NumClearColors, const FLinearColor* ClearColorArray, bool bClearDepth, float Depth, bool bClearStencil, uint32 Stencil)
{
// Set new states
FBlendStateRHIParamRef BlendStateRHI;
if (NumClearColors <= 1)
{
BlendStateRHI = bClearColor
? TStaticBlendState<>::GetRHI()
: TStaticBlendState<CW_NONE>::GetRHI();
}
else
{
BlendStateRHI = bClearColor
? TStaticBlendState<>::GetRHI()
: TStaticBlendStateWriteMask<CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE>::GetRHI();
}
const FDepthStencilStateRHIParamRef DepthStencilStateRHI =
(bClearDepth && bClearStencil)
? TStaticDepthStencilState<
true, CF_Always,
true,CF_Always,SO_Replace,SO_Replace,SO_Replace,
false,CF_Always,SO_Replace,SO_Replace,SO_Replace,
0xff,0xff
>::GetRHI()
: bClearDepth
? TStaticDepthStencilState<true, CF_Always>::GetRHI()
: bClearStencil
? TStaticDepthStencilState<
false, CF_Always,
true,CF_Always,SO_Replace,SO_Replace,SO_Replace,
false,CF_Always,SO_Replace,SO_Replace,SO_Replace,
0xff,0xff
>::GetRHI()
: TStaticDepthStencilState<false, CF_Always>::GetRHI();
RHICmdList.SetRasterizerState(TStaticRasterizerState<FM_Solid, CM_None>::GetRHI());
RHICmdList.SetBlendState(BlendStateRHI);
RHICmdList.SetDepthStencilState(DepthStencilStateRHI);
auto ShaderMap = GetGlobalShaderMap(FeatureLevel);
// Set the new shaders
TShaderMapRef<TOneColorVS<true> > VertexShader(ShaderMap);
FOneColorPS* PixelShader = NULL;
// Set the shader to write to the appropriate number of render targets
// On AMD PC hardware, outputting to a color index in the shader without a matching render target set has a significant performance hit
if (NumClearColors <= 1)
{
TShaderMapRef<TOneColorPixelShaderMRT<1> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 2)
{
TShaderMapRef<TOneColorPixelShaderMRT<2> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 3)
{
TShaderMapRef<TOneColorPixelShaderMRT<3> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 4)
{
TShaderMapRef<TOneColorPixelShaderMRT<4> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 5)
{
TShaderMapRef<TOneColorPixelShaderMRT<5> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 6)
{
TShaderMapRef<TOneColorPixelShaderMRT<6> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 7)
{
TShaderMapRef<TOneColorPixelShaderMRT<7> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 8)
{
TShaderMapRef<TOneColorPixelShaderMRT<8> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, GClearMRTBoundShaderState[FMath::Max(NumClearColors - 1, 0)], GetVertexDeclarationFVector4(), *VertexShader, PixelShader);
PixelShader->SetColors(RHICmdList, ClearColorArray, NumClearColors);
{
// Draw a fullscreen quad
/*if(ExcludeRect.Width() > 0 && ExcludeRect.Height() > 0)
{
// with a hole in it (optimization in case the hardware has non constant clear performance)
FVector4 OuterVertices[4];
OuterVertices[0].Set( -1.0f, 1.0f, Depth, 1.0f );
OuterVertices[1].Set( 1.0f, 1.0f, Depth, 1.0f );
OuterVertices[2].Set( 1.0f, -1.0f, Depth, 1.0f );
OuterVertices[3].Set( -1.0f, -1.0f, Depth, 1.0f );
float InvViewWidth = 1.0f / Viewport.Width;
float InvViewHeight = 1.0f / Viewport.Height;
FVector4 FractionRect = FVector4(ExcludeRect.Min.X * InvViewWidth, ExcludeRect.Min.Y * InvViewHeight, (ExcludeRect.Max.X - 1) * InvViewWidth, (ExcludeRect.Max.Y - 1) * InvViewHeight);
FVector4 InnerVertices[4];
InnerVertices[0].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.X), FMath::Lerp(1.0f, -1.0f, FractionRect.Y), Depth, 1.0f );
InnerVertices[1].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.Z), FMath::Lerp(1.0f, -1.0f, FractionRect.Y), Depth, 1.0f );
InnerVertices[2].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.Z), FMath::Lerp(1.0f, -1.0f, FractionRect.W), Depth, 1.0f );
InnerVertices[3].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.X), FMath::Lerp(1.0f, -1.0f, FractionRect.W), Depth, 1.0f );
FVector4 Vertices[10];
Vertices[0] = OuterVertices[0];
Vertices[1] = InnerVertices[0];
Vertices[2] = OuterVertices[1];
Vertices[3] = InnerVertices[1];
Vertices[4] = OuterVertices[2];
Vertices[5] = InnerVertices[2];
Vertices[6] = OuterVertices[3];
Vertices[7] = InnerVertices[3];
Vertices[8] = OuterVertices[0];
Vertices[9] = InnerVertices[0];
DrawPrimitiveUP(RHICmdList, PT_TriangleStrip, 8, Vertices, sizeof(Vertices[0]) );
}
else*/
{
// without a hole
FVector4 Vertices[4];
Vertices[0].Set( -1.0f, 1.0f, Depth, 1.0f );
Vertices[1].Set( 1.0f, 1.0f, Depth, 1.0f );
Vertices[2].Set( -1.0f, -1.0f, Depth, 1.0f );
Vertices[3].Set( 1.0f, -1.0f, Depth, 1.0f );
DrawPrimitiveUP(RHICmdList, PT_TriangleStrip, 2, Vertices, sizeof(Vertices[0]));
}
}
}
