wip hiz

src/main/resources/assets/voxy/shaders/hiz/blit.fsh

@@ -0,0 +1,9 @@
+#version 450
+
+
+layout(location = 0) in vec2 uv;
+layout(binding = 0) uniform sampler2D depthTex;
+void main() {
+    vec4 depths = textureGather(depthTex, uv, 0); // Get depth values from all surrounding texels.
+    gl_FragDepth = max(max(depths.x, depths.y), max(depths.z, depths.w)); // Write conservative depth.
+}

src/main/resources/assets/voxy/shaders/hiz/blit.vsh

@@ -0,0 +1,8 @@
+#version 450
+
+layout(location = 0) out vec2 uv;
+void main() {
+    vec2 corner = vec2[](vec2(0,0), vec2(1,0), vec2(1,1),vec2(0,1))[gl_VertexID];
+    uv = corner;
+    gl_Position = vec4(corner*2-1, 0, 1);
+}

src/main/resources/assets/voxy/shaders/lod/gl46mesh/cmdgen.comp

@@ -7,7 +7,7 @@
 #import <voxy:lod/section.glsl>
 #define extractMeshletStart extractQuadStart
 layout(local_size_x = 64) in;
-#define QUADS_PER_MESHLET 62
+#define QUADS_PER_MESHLET 30
 
 void emitMeshlets(inout uint mli, inout uint meshletPtr, uint mskedCnt, uint cnt) {
     for (;mskedCnt != 0; mskedCnt--,mli++) {

src/main/resources/assets/voxy/shaders/lod/gl46mesh/quads.frag

@@ -10,6 +10,7 @@ layout(location = 2) in flat vec4 tinting;
 layout(location = 3) in flat vec4 addin;
 layout(location = 4) in flat uint flags;
 layout(location = 5) in flat vec4 conditionalTinting;
+layout(location = 6) in flat uint meshlet;
 //layout(location = 6) in flat vec4 solidColour;
 
 layout(location = 0) out vec4 outColour;
@@ -29,4 +30,13 @@ void main() {
     outColour = (colour * tinting) + addin;
 
     //outColour = vec4(uv + baseUV, 0, 1);
+
+    /*
+    uint hash = meshlet*1231421+123141;
+    hash ^= hash>>16;
+    hash = hash*1231421+123141;
+    hash ^= hash>>16;
+
+    outColour = vec4(float(hash&15u)/15, float((hash>>4)&15u)/15, float((hash>>8)&15u)/15, 1);
+    */
 }

src/main/resources/assets/voxy/shaders/lod/gl46mesh/quads.vert

@@ -1,6 +1,6 @@
 #version 450
 #extension GL_ARB_gpu_shader_int64 : enable
-#define QUADS_PER_MESHLET 62
+#define QUADS_PER_MESHLET 30
 
 #define MESHLET_ACCESS readonly
 //There are 16 bytes of metadata at the start of the meshlet
@@ -36,6 +36,7 @@ uint extractDetail(PosHeader pos) {
 }
 #endif
 
+layout(location = 6) out flat uint meshlet;
 PosHeader meshletPosition;
 Quad quad;
 bool setupMeshlet() {
@@ -49,6 +50,7 @@ bool setupMeshlet() {
         return true;
     }
 
+    meshlet = data;
     uint baseId = (data*MESHLET_SIZE);
     uint quadIndex = baseId + (gl_VertexID>>2) + 2;
     meshletPosition = geometryPool[baseId];