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More work on fixing remaining hiz issues

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This commit is contained in:
mcrcortex
2025-04-22 09:20:45 +10:00
parent 306951ebee
commit 07bb8e0475
2 changed files with 23 additions and 10 deletions
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23
src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl
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@@ -128,22 +128,25 @@ bool outsideFrustum() {
}
bool isCulledByHiz() {
//if (minBB.z < 0) {//Minpoint is behind the camera, its always going to pass
// return false;//Just cull it for now cause other culling isnt working, TODO: FIXME
//}
if (any(lessThan(minBB.xy, vec2(0)) && lessThan(vec2(1), maxBB.xy))) {
return false;
}
vec2 ssize = size * vec2(screenW, screenH);
float miplevel = log2(max(max(ssize.x, ssize.y),1));
miplevel = ceil(miplevel);
miplevel = ceil(miplevel);
//miplevel = clamp(miplevel, 0, 20);
vec2 midpoint = (maxBB.xy + minBB.xy)*0.5f;
//TODO: maybe get rid of clamp
//Todo: replace with some rasterization, e.g. especially for request back to cpu
//vec2 midpoint2 = clamp(midpoint, vec2(0), vec2(1));
vec2 midpoint2 = midpoint;
//the *2.0f-1.0f converts from the 0->1 range to -1->1 range that depth is in
bool culled = textureLod(hizDepthSampler, vec3(midpoint2, minBB.z*2.0f-1.0f), miplevel) < 0.0001f;//*0.5f+0.5f
//midpoint = clamp(midpoint, vec2(0), vec2(1));
float testAgainst = minBB.z;
//the *2.0f-1.0f converts from the 0->1 range to -1->1 range that depth is in (not having this causes tighter bounds, but causes culling issues in caves)
testAgainst = testAgainst*2.0f-1.0f;
bool culled = textureLod(hizDepthSampler, vec3(midpoint, testAgainst), miplevel) < 0.0001f;
//printf("HiZ sample point: (%f,%f)@%f against %f", midpoint.x, midpoint.y, miplevel, minBB.z);
//if ((culled) && node22.lodLevel == 0) {
// printf("HiZ sample point: (%f,%f)@%f against %f, value %f", midpoint.x, midpoint.y, miplevel, minBB.z, textureLod(hizDepthSampler, vec3(0.5f,0.5f, 0.000000001f), 9.0f));