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fixed/greatly improved hiz culling maybe

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This commit is contained in:
mcrcortex
2024-12-01 23:35:25 +10:00
parent bdf3319204
commit 4312472534
2 changed files with 17 additions and 7 deletions
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4
src/main/java/me/cortex/voxy/client/core/rendering/hierachical2/HierarchicalOcclusionTraverser.java
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@@ -115,8 +115,10 @@ public class HierarchicalOcclusionTraverser {
MemoryUtil.memPutInt(ptr, (int) (this.renderList.size()/4-1)); ptr += 4;
final float screenspaceAreaDecreasingSize = 100 * 100;
//Screen space size for descending
MemoryUtil.memPutFloat(ptr, 100*100); ptr += 4;
MemoryUtil.memPutFloat(ptr, (float) (screenspaceAreaDecreasingSize) /(viewport.width*viewport.height)); ptr += 4;
}
private void bindings() {

20
src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl
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@@ -63,25 +63,33 @@ void setupScreenspace(in UnpackedNode node) {
//printf("Screenspace MIN: %f, %f, %f MAX: %f, %f, %f", minBB.x,minBB.y,minBB.z, maxBB.x,maxBB.y,maxBB.z);
//Convert to screenspace
maxBB = maxBB*0.5f+0.5f;
minBB = minBB*0.5f+0.5f;
maxBB.xy = maxBB.xy*0.5f+0.5f;
minBB.xy = minBB.xy*0.5f+0.5f;
size = clamp(maxBB.xy - minBB.xy, vec2(0), vec2(1));//We half it for implicit conversion to screenspace
size = clamp(maxBB.xy - minBB.xy, vec2(0), vec2(1));
}
//Checks if the node is implicitly culled (outside frustum)
bool outsideFrustum() {
return any(lessThanEqual(maxBB, vec3(0.0f, 0.0f, 0.0f))) || any(lessThanEqual(vec3(1.0f, 1.0f, 1.0f), minBB));
//|| any(lessThanEqual(minBB, vec3(0.0f, 0.0f, 0.0f))) || any(lessThanEqual(vec3(1.0f, 1.0f, 1.0f), maxBB));
}
bool isCulledByHiz() {
if (minBB.z < 0) {//Minpoint is behind the camera, its always going to pass
//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 (maxBB.z > 1) {
return false;
}
vec2 ssize = size.xy * vec2(screenW, screenH);
vec2 ssize = size * vec2(screenW, screenH);
float miplevel = ceil(log2(max(max(ssize.x, ssize.y),1)));
vec2 midpoint = (maxBB.xy + minBB.xy)*0.5f;
//TODO: maybe get rid of clamp
midpoint = clamp(midpoint, vec2(0), vec2(1));
bool culled = textureLod(hizDepthSampler, vec3(midpoint, minBB.z), miplevel) < 0.0001f;
if (culled) {
@@ -93,5 +101,5 @@ bool isCulledByHiz() {
//Returns if we should decend into its children or not
bool shouldDecend() {
//printf("Screen area %f: %f, %f", (size.x*size.y*float(screenW)*float(screenH)), float(size.x), float(size.y));
return (size.x*size.y*screenW*screenH) > minSSS;
return (size.x*size.y) > minSSS;
}