Iris support v1

src/main/resources/assets/voxy/shaders/lod/gl46/block_model.glsl

@@ -13,6 +13,7 @@ uint faceHasAlphaCuttout(uint faceData) {
     return (faceData>>22)&1u;
 }
 
+//TODO: try and get rid of
 uint faceHasAlphaCuttoutOverride(uint faceData) {
     return (faceData>>23)&1u;
 }

src/main/resources/assets/voxy/shaders/post/blit_texture_depth_cutout.frag

@@ -0,0 +1,32 @@
+#version 450 core
+
+layout(binding = 0) uniform sampler2D colourTex;
+layout(binding = 1) uniform sampler2D depthTex;
+layout(location = 2) uniform mat4 invProjMat;
+layout(location = 3) uniform mat4 projMat;
+
+out vec4 colour;
+in vec2 UV;
+
+vec3 rev3d(vec3 clip) {
+    vec4 view = invProjMat * vec4(clip*2.0-1.0,1.0);
+    return view.xyz/view.w;
+}
+float projDepth(vec3 pos) {
+    vec4 view = projMat * vec4(pos, 1);
+    return view.z/view.w;
+}
+
+void main() {
+    colour = texture(colourTex, UV.xy);
+    if (colour.a == 0.0) {
+        discard;
+    }
+
+    float depth = texture(depthTex, UV.xy).r;
+    depth = projDepth(rev3d(vec3(UV.xy, depth)));
+    depth = min(1f-(2f/((1<<24)-1)), depth);
+    depth = depth * 0.5f + 0.5f;
+    depth = gl_DepthRange.diff * depth + gl_DepthRange.near;
+    gl_FragDepth = depth;
+}

src/main/resources/voxy.mixins.json

@@ -16,6 +16,7 @@
     "defaultRequire": 1
   },
   "mixins": [
+    "sodium.MixinDefaultChunkRenderer",
     "sodium.MixinRenderSectionManager"
   ]
 }