xuanchi/XCEngine
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix directional shadow alignment across backends

Browse Source
This commit is contained in:
ssdfasd
2026-04-05 12:40:34 +08:00
parent bc6722e5ab
commit ec97445071
5 changed files with 677 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
engine/assets/builtin/shaders/forward-lit/forward-lit.frag.glsl
View File

@@ -41,15 +41,15 @@ float ComputeShadowAttenuation(vec3 positionWS) {
vec3 shadowNdc = shadowClip.xyz / shadowClip.w;
vec2 shadowUv = vec2(
shadowNdc.x * 0.5 + 0.5,
shadowNdc.y * -0.5 + 0.5);
shadowNdc.y * 0.5 + 0.5);
if (shadowUv.x < 0.0 || shadowUv.x > 1.0 ||
shadowUv.y < 0.0 || shadowUv.y > 1.0 ||
shadowNdc.z < 0.0 || shadowNdc.z > 1.0) {
shadowNdc.z < -1.0 || shadowNdc.z > 1.0) {
return 1.0;
}
float shadowDepth = texture(uShadowMapTexture, shadowUv).r;
float receiverDepth = shadowNdc.z - gShadowBiasAndTexelSize.x;
float receiverDepth = shadowNdc.z * 0.5 + 0.5 - gShadowBiasAndTexelSize.x;
float shadowStrength = clamp(gShadowBiasAndTexelSize.w, 0.0, 1.0);
return receiverDepth <= shadowDepth ? 1.0 : (1.0 - shadowStrength);
}