Chunk opacity

prismarine-viewer/examples/Cube.comp.wgsl

@@ -5,6 +5,7 @@ struct Cube {
 struct Chunk {
   x: i32,
   z: i32,
+  opacity: i32,
 }
 
 

prismarine-viewer/examples/Cube.frag.wgsl

@@ -6,13 +6,14 @@
 fn main(
   @location(0) fragUV: vec2f,
   @location(1) @interpolate(flat) TextureIndex: f32,
-  @location(2) @interpolate(flat) ColorBlend: vec3f
+  @location(2) @interpolate(flat) ColorBlend: vec3f,
+   @location(3) @interpolate(flat) ChunkOpacity: f32
 ) -> @location(0) vec4f {
   let textureSize: vec2<f32> = vec2<f32>(textureDimensions(myTexture));
   let tilesPerTexture: vec2<f32> = textureSize / tileSize;
   let pixelColor = textureSample(myTexture, mySampler, fragUV / tilesPerTexture + vec2f(trunc(TextureIndex % tilesPerTexture.y), trunc(TextureIndex / tilesPerTexture.x)) / tilesPerTexture);
   // return vec4f(pixelColor.rgb * ColorBlend / 255, pixelColor.a); // Set alpha to 1.0 for full opacity
-  return vec4f(pixelColor.rgb * ColorBlend / 255, 1.0); // Set alpha to 1.0 for full opacity
+  return vec4f(pixelColor.rgb * ColorBlend / 255, 1.0 * ChunkOpacity); // Set alpha to 1.0 for full opacity
 //   only gray:
 //   let t = textureSample(myTexture, mySampler, fragUV / tilesPerTexture + vec2f(trunc(TextureIndex % tilesPerTexture.y), trunc(TextureIndex / tilesPerTexture.x)) / tilesPerTexture);
 //   // return vec4f(pixelColor.rgb * ColorBlend / 255, pixelColor.a); // Set alpha to 1.0 for full opacity

prismarine-viewer/examples/Cube.vert.wgsl

@@ -6,6 +6,7 @@ struct Cube {
 struct Chunk{
   x : i32,
   z : i32,
+  opacity: i32
 }
 
 
@@ -22,7 +23,8 @@ struct VertexOutput {
   @builtin(position) Position: vec4f,
   @location(0) fragUV: vec2f,
   @location(1) @interpolate(flat) TextureIndex: f32,
-  @location(2) @interpolate(flat) ColorBlend: vec3f
+  @location(2) @interpolate(flat) ColorBlend: vec3f,
+  @location(3) @interpolate(flat) ChunkOpacity: f32
 }
 @group(1) @binding(0) var<storage, read> cubes: array<Cube>;
 @group(0) @binding(0) var<uniform> ViewProjectionMatrix: mat4x4<f32>;
@@ -94,6 +96,7 @@ fn main(
   var output: VertexOutput;
   output.Position = ViewProjectionMatrix * (position * normal + cube_position);
   output.fragUV = Uv;
+  output.ChunkOpacity = f32(chunk.opacity) / 255;
   output.TextureIndex = f32(textureIndex);
   output.ColorBlend = colorBlend;
   return output;

prismarine-viewer/examples/CubeSort.comp.wgsl

@@ -16,6 +16,7 @@ struct Cube {
 struct Chunk {
   x: i32,
   z: i32,
+  opacity: i32
 }
 
 struct Depth {

prismarine-viewer/examples/webgpuRenderer.ts

@@ -902,13 +902,14 @@ export class WebgpuRenderer {
     }
     const chunksCount = chunks.length
 
-    const chunksBuffer = new Int32Array(chunksCount * 2)
+    const chunksBuffer = new Int32Array(chunksCount * 3)
     let totalFromChunks = 0
     for (let i = 0; i < chunksCount; i++) {
-      const offset = i * 2
+      const offset = i * 3
       const { x, z, length } = chunks[i]!
       chunksBuffer[offset] = x
       chunksBuffer[offset + 1] = z
+      chunksBuffer[offset + 2] = 255
       const cubesCount = length
       totalFromChunks += cubesCount
     }