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Shadow mapping works 99%

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Dynamitos
2026-02-24 22:52:21 +01:00
parent 2f146445a4
commit 2e63b3cb83
2 changed files with 11 additions and 8 deletions
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res/shaders/BasePass.slang
+7 -4
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@@ -46,13 +46,16 @@ float4 fragmentMain(in FragmentParameter params) : SV_Target
{
uint cascadeIndex = 0;
for (uint c = 0; c < NUM_CASCADES - 1; ++c) {
if (params.position_VS.z > pShadowMapping.cascadeSplits[c]) {
if (-params.position_VS.z > pShadowMapping.cascadeSplits[c]) {
cascadeIndex = c + 1;
}
}
float4 lightSpacePos = mul(pShadowMapping.lightSpaceMatrices[cascadeIndex][i], float4(params.position_WS, 1));
lightSpacePos = float4(lightSpacePos.xy * 0.5 + 0.5, lightSpacePos.zw);
// Negate Y to compensate for orthographic projection's Y negation + viewport Y-flip double-inversion
lightSpacePos = float4(lightSpacePos.x * 0.5 + 0.5, -lightSpacePos.y * 0.5 + 0.5, lightSpacePos.zw);
float4 shadowCoord = lightSpacePos;
// Convert NDC z to viewport depth space (inverse depth: near=1, far=0)
float currentDepth = 1.0 - shadowCoord.z;
int3 texDim;
pShadowMapping.shadowMaps[cascadeIndex].GetDimensions(texDim.x, texDim.y, texDim.z);
float scale = 1.5f;
@@ -65,10 +68,10 @@ float4 fragmentMain(in FragmentParameter params) : SV_Target
//for (int x = -range; x <= range; ++x) {
// for (int y = -range; y <= range; ++y) {
float shadow = 1.0f;
if (shadowCoord.z > 0.0 && shadowCoord.z < 1.0)
if (currentDepth > 0.0 && currentDepth < 1.0)
{
float dist = pShadowMapping.shadowMaps[cascadeIndex].Sample(pShadowMapping.shadowSampler, float3(shadowCoord.xy, i)).r;
if (shadowCoord.w > 0 && dist < shadowCoord.z)
if (shadowCoord.w > 0 && currentDepth < dist)
{
shadow = 0;
}