From 45e2ea897f75d647786fd4413ce2848f942f84d2 Mon Sep 17 00:00:00 2001
From: mcrcortex <18544518+MCRcortex@users.noreply.github.com>
Date: Tue, 15 Jul 2025 12:10:33 +1000
Subject: [PATCH] add textures

---
 .../assets/voxy/shaders/lod/mesh/frag.glsl     | 18 +++++++++++++++++-
 .../assets/voxy/shaders/lod/mesh/mesh.glsl     |  9 ++++++---
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/src/main/resources/assets/voxy/shaders/lod/mesh/frag.glsl b/src/main/resources/assets/voxy/shaders/lod/mesh/frag.glsl
index fd2ef5e8..c47c4188 100644
--- a/src/main/resources/assets/voxy/shaders/lod/mesh/frag.glsl
+++ b/src/main/resources/assets/voxy/shaders/lod/mesh/frag.glsl
@@ -1,10 +1,13 @@
 #version 460 core
 
+#extension GL_NV_fragment_shader_barycentric : require
+
 layout(binding = 0) uniform sampler2D blockModelAtlas;
 layout(binding = 2) uniform sampler2D depthTex;
 
 layout(location=1) perprimitiveNV in PerPrimData {
     uvec4 data;
+    vec4 uvData;
 } primIn;
 
 layout(location = 0) out vec4 outColour;
@@ -45,9 +48,22 @@ vec2 getBaseUV() {
     return modelUV + (vec2(face>>1, face&1u) * (1.0/(vec2(3.0, 2.0)*256.0)));
 }
 
+bool isTri0() {
+    return (gl_PrimitiveID&(1<<31))==0;
+}
 
 void main() {
-    vec2 uv = vec2(0);
+    bool tri0 = isTri0();
+    //1,2,0
+    //1,3,2
+    //vec2((corner>>1)&1u, corner&1u)
+
+    //vec2(0,gl_BaryCoordNV.x)+vec2(gl_BaryCoordNV.y,0)+vec2(0,0);
+    //vec2(0,gl_BaryCoordNV.x)+vec2(gl_BaryCoordNV.y,gl_BaryCoordNV.y)+vec2(gl_BaryCoordNV.z,0);
+
+
+    vec2 uv = fma(mix(gl_BaryCoordNV.zx+gl_BaryCoordNV.y, gl_BaryCoordNV.yx, bvec2(tri0)), primIn.uvData.zw, primIn.uvData.xy);
+    //Need to interpolate
 
     //Tile is the tile we are in
     vec2 tile;
diff --git a/src/main/resources/assets/voxy/shaders/lod/mesh/mesh.glsl b/src/main/resources/assets/voxy/shaders/lod/mesh/mesh.glsl
index 14fcb4b4..5132c3aa 100644
--- a/src/main/resources/assets/voxy/shaders/lod/mesh/mesh.glsl
+++ b/src/main/resources/assets/voxy/shaders/lod/mesh/mesh.glsl
@@ -29,6 +29,7 @@ layout(std430) taskNV in Task {
 
 layout(location=1) perprimitiveNV out PerPrimData {
     uvec4 data;
+    vec4 uvData;
 } primOut[];
 
 
@@ -172,7 +173,7 @@ void setup(Quad quad) {
 }
 
 vec2 getUvCorner(uint corner) {
-    return faceSize.xz + axisFaceSize*vec2((corner>>1)&1u, corner&1u);;
+    return faceSize.xz + axisFaceSize*vec2((corner>>1)&1u, corner&1u);
 }
 
 uvec4 createQuadData(Quad quad) {
@@ -293,7 +294,8 @@ void main() {
             gl_MeshVerticesNV[vertId++].gl_Position = p0;
 
             primOut[triId].data = data;
-            gl_MeshPrimitivesNV[triId++].gl_PrimitiveID = int(qid);
+            primOut[triId].uvData = vec4(faceSize.xz, axisFaceSize);
+            gl_MeshPrimitivesNV[triId++].gl_PrimitiveID = int(qid|(0u<<31));
         }
 
         {
@@ -304,7 +306,8 @@ void main() {
             gl_MeshVerticesNV[vertId++].gl_Position = p3;
 
             primOut[triId].data = data;
-            gl_MeshPrimitivesNV[triId++].gl_PrimitiveID = int(qid);
+            primOut[triId].uvData = vec4(faceSize.xz, axisFaceSize);
+            gl_MeshPrimitivesNV[triId++].gl_PrimitiveID = int(qid|(1u<<31));
         }