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Got point light shadowmaps working

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This commit is contained in:
Robert Beckebans 2022-03-11 12:56:07 +01:00
parent 67a0768560
commit a63c5ba5f1
1 changed files with 12 additions and 10 deletions
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22
neo/renderer/RenderBackend.cpp
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@ -3293,15 +3293,12 @@ void idRenderBackend::ShadowMapPass( const drawSurf_t* drawSurfs, const viewLigh
{
assert( side >= 0 && side < 6 );
// FIXME OPTIMIZE no memset
float viewMatrix[16];
float viewMatrix[16] = {0};
idVec3 vec;
idVec3 origin = vLight->globalLightOrigin;
// side of a point light
memset( viewMatrix, 0, sizeof( viewMatrix ) );
switch( side )
{
case 0:
@ -3382,7 +3379,7 @@ void idRenderBackend::ShadowMapPass( const drawSurf_t* drawSurfs, const viewLigh
// from OpenGL view space to OpenGL NDC ( -1 : 1 in XYZ )
float lightProjectionMatrix[16];
lightProjectionMatrix[0 * 4 + 0] = 2.0f * zNear / width;
lightProjectionMatrix[0 * 4 + 0] = -2.0f * zNear / width;
lightProjectionMatrix[1 * 4 + 0] = 0.0f;
lightProjectionMatrix[2 * 4 + 0] = ( xmax + xmin ) / width; // normally 0
lightProjectionMatrix[3 * 4 + 0] = 0.0f;
@ -3399,7 +3396,7 @@ void idRenderBackend::ShadowMapPass( const drawSurf_t* drawSurfs, const viewLigh
lightProjectionMatrix[1 * 4 + 2] = 0.0f;
lightProjectionMatrix[2 * 4 + 2] = -0.999f; // adjust value to prevent imprecision issues
#if defined( USE_NVRHI )
#if 0 //defined( USE_NVRHI )
// the D3D clip space Z is in range [0,1] instead of [-1,1]
lightProjectionMatrix[3 * 4 + 2] = -zNear;
#else
@ -3416,10 +3413,15 @@ 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 matClipToUvzw2(
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] );
#endif
}
else