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Fixed cascaded shadowmap rendering

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This commit is contained in:
Robert Beckebans 2022-03-12 11:38:21 +01:00
parent 21ce622907
commit 827bb275d6
1 changed files with 19 additions and 14 deletions
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33
neo/renderer/RenderBackend.cpp
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@ -3103,14 +3103,6 @@ void idRenderBackend::ShadowMapPass( const drawSurf_t* drawSurfs, const viewLigh
idRenderMatrix lightProjectionRenderMatrix;
idRenderMatrix lightViewRenderMatrix;
// Calculate alternate matrix that maps to [0, 1] UV space instead of [-1, 1] clip space
ALIGNTYPE16 const idRenderMatrix matClipToUvzw(
0.5f, 0.0f, 0.0f, 0.5f,
0.0f, -0.5f, 0.0f, 0.5f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
);
if( vLight->parallel && side >= 0 )
{
assert( side >= 0 && side < 6 );
@ -3268,10 +3260,15 @@ void idRenderBackend::ShadowMapPass( const drawSurf_t* drawSurfs, const viewLigh
shadowV[side] = lightViewRenderMatrix;
shadowP[side] = lightProjectionRenderMatrix;
#if 0 //defined( USE_NVRHI )
idRenderMatrix shadowToClip;
idRenderMatrix::Multiply( renderMatrix_windowSpaceToClipSpace, lightProjectionRenderMatrix, shadowToClip );
idRenderMatrix::Multiply( matClipToUvzw, shadowToClip, shadowP[side] );
#if defined( USE_NVRHI )
ALIGNTYPE16 const idRenderMatrix matClipToUvzw(
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, -1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 2.0f, -1.0f,
0.0f, 0.0f, 0.0f, 1.0f
);
idRenderMatrix::Multiply( matClipToUvzw, lightProjectionRenderMatrix, shadowP[side] );
#endif
}
else if( vLight->pointLight && side >= 0 )
@ -3399,14 +3396,14 @@ void idRenderBackend::ShadowMapPass( const drawSurf_t* drawSurfs, const viewLigh
shadowP[side] = lightProjectionRenderMatrix;
#if defined( USE_NVRHI )
ALIGNTYPE16 const idRenderMatrix matClipToUvzw2(
ALIGNTYPE16 const idRenderMatrix matClipToUvzw(
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, -1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 2.0f, -1.0f,
0.0f, 0.0f, 0.0f, 1.0f
);
idRenderMatrix::Multiply( matClipToUvzw2, lightProjectionRenderMatrix, shadowP[side] );
idRenderMatrix::Multiply( matClipToUvzw, lightProjectionRenderMatrix, shadowP[side] );
#endif
}
else
@ -3419,6 +3416,14 @@ void idRenderBackend::ShadowMapPass( const drawSurf_t* drawSurfs, const viewLigh
shadowP[0] = lightProjectionRenderMatrix;
#if defined( USE_NVRHI )
// Calculate alternate matrix that maps to [0, 1] UV space instead of [-1, 1] clip space
ALIGNTYPE16 const idRenderMatrix matClipToUvzw(
0.5f, 0.0f, 0.0f, 0.5f,
0.0f, -0.5f, 0.0f, 0.5f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
);
idRenderMatrix shadowToClip;
idRenderMatrix::Multiply( renderMatrix_windowSpaceToClipSpace, lightProjectionRenderMatrix, shadowToClip );
idRenderMatrix::Multiply( matClipToUvzw, shadowToClip, shadowP[0] );