use texture index

engine/world_generation/src/mesh_generator.rs

@@ -23,6 +23,14 @@ const HEX_CORNERS: [Vec3; 6] = [
 	Vec3::new(-INNER_RADIUS, 0., -0.5 * OUTER_RADIUS),
 	Vec3::new(-INNER_RADIUS, 0., 0.5 * OUTER_RADIUS),
 ];
+const HEX_NORMALS: [Vec3; 6] = [
+	Vec3::new(0., 0., OUTER_RADIUS),
+	Vec3::new(INNER_RADIUS, 0., 0.5 * OUTER_RADIUS),
+	Vec3::new(INNER_RADIUS, 0., -0.5 * OUTER_RADIUS),
+	Vec3::new(0., 0., -OUTER_RADIUS),
+	Vec3::new(-INNER_RADIUS, 0., -0.5 * OUTER_RADIUS),
+	Vec3::new(-INNER_RADIUS, 0., 0.5 * OUTER_RADIUS),
+];
 
 pub fn generate_chunk_mesh(
 	chunk: &Chunk,
@@ -35,6 +43,7 @@ pub fn generate_chunk_mesh(
 	let mut verts = Vec::with_capacity(vertex_count);
 	let mut uvs = Vec::with_capacity(vertex_count);
 	let mut indices = Vec::with_capacity(vertex_count);
+	let mut texture_indicies = Vec::with_capacity(vertex_count);
 
 	for z in 0..Chunk::SIZE {
 		for x in 0..Chunk::SIZE {
@@ -57,6 +66,7 @@ pub fn generate_chunk_mesh(
 				&mut verts,
 				&mut uvs,
 				&mut indices,
+				&mut texture_indicies,
 				// &mut tex,
 				tile.texture_id,
 				tile.side_texture_id,
@@ -70,6 +80,7 @@ pub fn generate_chunk_mesh(
 	)
 	.with_inserted_attribute(Mesh::ATTRIBUTE_POSITION, verts)
 	.with_inserted_attribute(Mesh::ATTRIBUTE_UV_0, uvs)
+	.with_inserted_attribute(ATTRIBUTE_TEXTURE_INDEX, texture_indicies)
 	.with_inserted_indices(Indices::U32(indices))
 	.with_duplicated_vertices()
 	.with_computed_flat_normals();
@@ -82,24 +93,25 @@ fn create_tile(
 	verts: &mut Vec<Vec3>,
 	uvs: &mut Vec<Vec2>,
 	indices: &mut Vec<u32>,
+	texture_indices: &mut Vec<u32>,
 	texture_index: u32,
 	side_texture_index: u32,
 ) {
 	let uv_offset = Vec2::splat(0.5);
-	let tex_off = Vec2::new(texture_index as f32, 0.);
-	let side_tex_off = Vec2::new(side_texture_index as f32, 0.);
 
 	let idx = verts.len() as u32;
-	uvs.push(uv_offset + tex_off);
+	uvs.push(uv_offset);
+	texture_indices.push(texture_index);
 	verts.push(pos);
 	for i in 0..6 {
 		let p = pos + HEX_CORNERS[i];
 		verts.push(p);
 		let uv = (HEX_CORNERS[i].xz() / 2.) + uv_offset;
-		uvs.push(uv + tex_off);
+		uvs.push(uv);
 		indices.push(idx);
 		indices.push(idx + 1 + i as u32);
 		indices.push(idx + 1 + ((i as u32 + 1) % 6));
+		texture_indices.push(texture_index);
 	}
 
 	for i in 0..neighbors.len() {
@@ -107,7 +119,16 @@ fn create_tile(
 		match cur_n {
 			Some(n_height) => {
 				if n_height < pos.y {
-					create_tile_wall(pos, i, n_height, verts, uvs, indices, side_tex_off);
+					create_tile_wall(
+						pos,
+						i,
+						n_height,
+						verts,
+						uvs,
+						indices,
+						texture_indices,
+						side_texture_index,
+					);
 				}
 			}
 			_ => {}
@@ -122,7 +143,8 @@ fn create_tile_wall(
 	verts: &mut Vec<Vec3>,
 	uvs: &mut Vec<Vec2>,
 	indices: &mut Vec<u32>,
-	tex_off: Vec2,
+	texture_indices: &mut Vec<u32>,
+	texture_index: u32,
 ) {
 	let p1 = HEX_CORNERS[(dir) % 6] + pos;
 	let p2 = HEX_CORNERS[(dir + 1) % 6] + pos;
@@ -136,6 +158,11 @@ fn create_tile_wall(
 	verts.push(p3);
 	verts.push(p4);
 
+	texture_indices.push(texture_index);
+	texture_indices.push(texture_index);
+	texture_indices.push(texture_index);
+	texture_indices.push(texture_index);
+
 	indices.push(idx);
 	indices.push(idx + 2);
 	indices.push(idx + 1);
@@ -144,8 +171,8 @@ fn create_tile_wall(
 	indices.push(idx + 2);
 	indices.push(idx + 3);
 
-	uvs.push(Vec2::ZERO + tex_off);
-	uvs.push(Vec2::new(1., 0.) + tex_off);
-	uvs.push(Vec2::new(0., pos.y - height) + tex_off);
-	uvs.push(Vec2::new(1., pos.y - height) + tex_off);
+	uvs.push(Vec2::ZERO);
+	uvs.push(Vec2::new(1., 0.));
+	uvs.push(Vec2::new(0., pos.y - height));
+	uvs.push(Vec2::new(1., pos.y - height));
 }

game/main/src/main.rs

@@ -5,13 +5,15 @@ use bevy_inspector_egui::quick::WorldInspectorPlugin;
 
 mod phos;
 mod prelude;
+mod shaders;
 
 use phos::PhosGamePlugin;
 
 fn main() {
 	App::new()
 		.add_plugins((
-			DefaultPlugins.set(WindowPlugin {
+			DefaultPlugins
+				.set(WindowPlugin {
 					primary_window: Some(Window {
 						title: "Phos".into(),
 						name: Some("phos".into()),
@@ -21,13 +23,14 @@ fn main() {
 						..default()
 					}),
 					..default()
-			}).set(ImagePlugin {
+				})
+				.set(ImagePlugin {
 					default_sampler: ImageSamplerDescriptor {
 						address_mode_u: ImageAddressMode::Repeat,
 						address_mode_v: ImageAddressMode::Repeat,
 						mag_filter: ImageFilterMode::Nearest,
 						..default()
-				}
+					},
 				}),
 			WorldInspectorPlugin::new(),
 			PhosGamePlugin,

game/main/src/phos.rs

@@ -1,4 +1,5 @@
 use crate::prelude::*;
+use crate::shaders::chunk::ChunkMaterial;
 use bevy::asset::LoadState;
 use bevy::core_pipeline::experimental::taa::TemporalAntiAliasPlugin;
 use bevy::pbr::ExtendedMaterial;

game/main/src/prelude.rs

@@ -1,9 +1,5 @@
-use bevy::asset::{Asset, Handle};
-use bevy::pbr::{MaterialExtension, MaterialExtensionKey, MaterialExtensionPipeline, MaterialPipeline, MaterialPipelineKey};
-use bevy::prelude::{Component, Image, Mesh, Resource, TypePath};
-use bevy::render::mesh::{Indices, MeshVertexBufferLayout};
-use bevy::render::render_resource::{AsBindGroup, RenderPipelineDescriptor, ShaderRef, SpecializedMeshPipelineError};
-use world_generation::prelude::ATTRIBUTE_TEXTURE_INDEX;
+use bevy::asset::Handle;
+use bevy::prelude::{Component, Image, Resource};
 
 #[derive(Resource)]
 pub struct ChunkAtlas {
@@ -19,33 +15,3 @@ pub struct PhosMap {
 
 #[derive(Component)]
 pub struct PhosChunk;
-
-
-#[derive(Asset, TypePath, AsBindGroup, Debug, Clone)]
-pub struct ChunkMaterial {
-	#[texture(100, dimension = "2d_array")]
-	#[sampler(101)]
-	pub array_texture: Handle<Image>,
-}
-
-impl MaterialExtension for ChunkMaterial {
-	fn fragment_shader() -> ShaderRef {
-		"shaders/world/chunk.wgsl".into()
-	}
-
-	// fn specialize(
-	// 	_pipeline: &MaterialExtensionPipeline,
-	// 	descriptor: &mut RenderPipelineDescriptor,
-	// 	layout: &MeshVertexBufferLayout,
-	// 	_key: MaterialExtensionKey<Self>,
-	// ) -> Result<(), 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_TEXTURE_INDEX.at_shader_location(3),
-	// 	])?;
-	// 	descriptor.vertex.buffers = vec![vertex_layout];
-	// 	Ok(())
-	// }
-}

game/main/src/shaders/chunk.rs

@@ -0,0 +1,43 @@
+use bevy::{
+	asset::{Asset, Handle},
+	pbr::{MaterialExtension, MaterialExtensionKey, MaterialExtensionPipeline},
+	prelude::*,
+	reflect::TypePath,
+	render::{
+		mesh::MeshVertexBufferLayout,
+		render_resource::{
+			AsBindGroup, RenderPipelineDescriptor, ShaderRef, SpecializedMeshPipelineError,
+		},
+		texture::Image,
+	},
+};
+use world_generation::prelude::ATTRIBUTE_TEXTURE_INDEX;
+
+#[derive(Asset, TypePath, AsBindGroup, Debug, Clone)]
+pub struct ChunkMaterial {
+	#[texture(100, dimension = "2d_array")]
+	#[sampler(101)]
+	pub array_texture: Handle<Image>,
+}
+
+impl MaterialExtension for ChunkMaterial {
+	fn fragment_shader() -> ShaderRef {
+		"shaders/world/chunk.wgsl".into()
+	}
+
+	fn specialize(
+		_pipeline: &MaterialExtensionPipeline,
+		descriptor: &mut RenderPipelineDescriptor,
+		layout: &MeshVertexBufferLayout,
+		_key: MaterialExtensionKey<Self>,
+	) -> Result<(), 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_TEXTURE_INDEX.at_shader_location(7),
+		])?;
+		descriptor.vertex.buffers = vec![vertex_layout];
+		Ok(())
+	}
+}

game/main/src/shaders/mod.rs

@@ -0,0 +1 @@
+pub mod chunk;