pack vertex data

game/main/src/shader_extensions/chunk_material.rs

@@ -1,8 +1,10 @@
 use bevy::asset::{Asset, Handle};
 use bevy::pbr::MaterialExtension;
 use bevy::reflect::TypePath;
+use bevy::render::mesh::Mesh;
 use bevy::render::render_resource::{AsBindGroup, ShaderRef};
 use bevy::render::texture::Image;
+use world_generation::prelude::ATTRIBUTE_PACKED_VERTEX_DATA;
 
 #[derive(Asset, TypePath, AsBindGroup, Debug, Clone)]
 pub struct ChunkMaterial {
@@ -15,4 +17,24 @@ impl MaterialExtension for ChunkMaterial {
 	fn fragment_shader() -> ShaderRef {
 		"shaders/world/chunk.wgsl".into()
 	}
+
+	fn vertex_shader() -> ShaderRef {
+		"shaders/world/chunk_packed.wgsl".into()
+	}
+
+	fn specialize(
+		_pipeline: &bevy::pbr::MaterialExtensionPipeline,
+		descriptor: &mut bevy::render::render_resource::RenderPipelineDescriptor,
+		layout: &bevy::render::mesh::MeshVertexBufferLayout,
+		_key: bevy::pbr::MaterialExtensionKey<Self>,
+	) -> Result<(), bevy::render::render_resource::SpecializedMeshPipelineError> {
+		let vertex_layout = layout.get_layout(&[
+			Mesh::ATTRIBUTE_POSITION.at_shader_location(0),
+			Mesh::ATTRIBUTE_UV_0.at_shader_location(1),
+			Mesh::ATTRIBUTE_NORMAL.at_shader_location(2),
+			ATTRIBUTE_PACKED_VERTEX_DATA.at_shader_location(7),
+		])?;
+		descriptor.vertex.buffers = vec![vertex_layout];
+		Ok(())
+	}
 }