bad not working transparency

client/blocks/mod.ts

@@ -8,3 +8,4 @@ import "./stone.ts";
 import "./log.ts";
 import "./sand.ts";
 import "./snow.ts";
+import "./glass.ts";

client/blocks/water.ts

@@ -3,4 +3,6 @@ import { BlockRegistry, EverythingRegistry } from "$/common/everything_registry.
 EverythingRegistry.register<BlockRegistry>("blocks", "bworld:water", {
 	textures: "bworld:water",
 	has_collision: false,
+	transparent: true,
+	alpha: 0.8,
 });

client/components/dimension.ts

@@ -28,8 +28,10 @@ export interface Chunk {
 	blocks: Int16Array;
 	generated: boolean;
 	dirty: boolean;
-	vertex_buffer?: WebGLBuffer;
-	vertex_count?: number;
+	opaque_vertex_buffer?: WebGLBuffer;
+	opaque_vertex_count?: number;
+	transparent_vertex_buffer?: WebGLBuffer;
+	transparent_vertex_count?: number;
 }
 
 export class Dimension extends Component {
@@ -193,8 +195,11 @@ export class Dimension extends Component {
 	}
 
 	delete_chunk_mesh(chunk: Chunk) {
-		if (chunk.vertex_buffer) {
-			gl.deleteBuffer(chunk.vertex_buffer);
+		if (chunk.opaque_vertex_buffer) {
+			gl.deleteBuffer(chunk.opaque_vertex_buffer);
+		}
+		if (chunk.transparent_vertex_buffer) {
+			gl.deleteBuffer(chunk.transparent_vertex_buffer);
 		}
 	}
 

client/systems/player_controls.ts

@@ -116,7 +116,7 @@ export class PlayerControlsSystem extends System {
 						x: block.x + offset.x,
 						y: block.y + offset.y,
 						z: block.z + offset.z,
-						id: "bworld:dirt",
+						id: "bworld:glass",
 					});
 				}
 			}

client/systems/rendering/dimension.ts

@@ -11,7 +11,7 @@ const worker = new Worker(new URL("./workers/chunk_mesh_worker.js", import.meta.
 });
 
 worker.onmessage = (event) => {
-	const { vertices, count, chunk_x, chunk_z } = event.data;
+	const { opaque_vertices, opaque_count, transparent_vertices, transparent_count, chunk_x, chunk_z } = event.data;
 	const chunk = gdimension.get_chunk(chunk_x, chunk_z);
 	if (!chunk) {
 		console.error("bad");
@@ -19,13 +19,24 @@ worker.onmessage = (event) => {
 	}
 	gdimension.delete_chunk_mesh(chunk);
 	chunk.dirty = false;
-	chunk.vertex_buffer = gl.createBuffer();
-	chunk.vertex_count = count / 9;
 
-	gl.bindBuffer(gl.ARRAY_BUFFER, chunk.vertex_buffer);
+	chunk.opaque_vertex_buffer = gl.createBuffer();
+	chunk.opaque_vertex_count = opaque_count / 9;
+
+	gl.bindBuffer(gl.ARRAY_BUFFER, chunk.opaque_vertex_buffer);
 	gl.bufferData(
 		gl.ARRAY_BUFFER,
-		vertices.subarray(0, count),
+		opaque_vertices.subarray(0, opaque_count),
+		gl.STATIC_DRAW,
+	);
+
+	chunk.transparent_vertex_buffer = gl.createBuffer();
+	chunk.transparent_vertex_count = transparent_count / 9;
+
+	gl.bindBuffer(gl.ARRAY_BUFFER, chunk.transparent_vertex_buffer);
+	gl.bufferData(
+		gl.ARRAY_BUFFER,
+		transparent_vertices.subarray(0, transparent_count),
 		gl.STATIC_DRAW,
 	);
 };
@@ -70,12 +81,24 @@ export function render_dimension(dimension: Dimension, camera: Camera) {
 	for (const chunk of dimension.chunks) {
 		render_chunk_opaque(chunk);
 	}
+
+	for (const chunk of dimension.chunks) {
+		render_chunk_transparent(chunk);
+	}
 }
 
 function render_chunk_opaque(chunk: Chunk) {
-	if (!chunk.vertex_buffer || !chunk.vertex_count) {
+	if (!chunk.opaque_vertex_buffer || !chunk.opaque_vertex_count) {
 		return;
 	}
 
-	flush_buffer(chunk.vertex_buffer, chunk.vertex_count);
+	flush_buffer(chunk.opaque_vertex_buffer, chunk.opaque_vertex_count);
+}
+
+function render_chunk_transparent(chunk: Chunk) {
+	if (!chunk.transparent_vertex_buffer || !chunk.transparent_vertex_count) {
+		return;
+	}
+
+	flush_buffer(chunk.transparent_vertex_buffer, chunk.transparent_vertex_count);
 }

client/workers/chunk_mesh_worker.ts

@@ -29,8 +29,18 @@ const FACE_PUSHING_FUNCTIONS = {
 
 self.onmessage = (event) => {
 	const { chunk_x, chunk_z, padded_chunk, blocks_registry, textures_info, image } = event.data;
-	const [vertices, count] = make_chunk_mesh(chunk_x, chunk_z, padded_chunk, blocks_registry, textures_info, image);
-	self.postMessage({ vertices, count, chunk_x, chunk_z }, [vertices.buffer]);
+	const [opaque_vertices, opaque_count, transparent_vertices, transparent_count] = make_chunk_mesh(
+		chunk_x,
+		chunk_z,
+		padded_chunk,
+		blocks_registry,
+		textures_info,
+		image,
+	);
+	self.postMessage(
+		{ opaque_vertices, opaque_count, transparent_vertices, transparent_count, chunk_x, chunk_z },
+		[opaque_vertices.buffer, transparent_vertices.buffer],
+	);
 };
 
 function make_chunk_mesh(
@@ -40,9 +50,11 @@ function make_chunk_mesh(
 	blocks_registry: BlockRegistry[],
 	textures_info: TexturesInfo,
 	image: Texture,
-): [Float32Array, number] {
-	let vertices = new Float32Array(2048);
-	let count = 0;
+): [Float32Array, number, Float32Array, number] {
+	let opaque_vertices = new Float32Array(2048);
+	let opaque_count = 0;
+	let transparent_vertices = new Float32Array(2048);
+	let transparent_count = 0;
 
 	const size = CHUNK_SIZE + 2;
 	const layer = size * size;
@@ -119,30 +131,53 @@ function make_chunk_mesh(
 					if (faces[side]) {
 						const region = textures_info[texture_ids[side]];
 
-						vertices = ensure_capacity(vertices, count + (6 * 6 * 9));
-						count = FACE_PUSHING_FUNCTIONS[side](
-							vertices,
-							count,
-							image,
-							wx,
-							y,
-							wz,
-							region.x * TEXTURE_SIZE,
-							region.y * TEXTURE_SIZE,
-							TEXTURE_SIZE,
-							TEXTURE_SIZE,
-							1,
-							1,
-							1,
-							1,
-						);
+						if (block_info.transparent) {
+							transparent_vertices = ensure_capacity(
+								transparent_vertices,
+								transparent_count + (6 * 6 * 9),
+							);
+							transparent_count = FACE_PUSHING_FUNCTIONS[side](
+								transparent_vertices,
+								transparent_count,
+								image,
+								wx,
+								y,
+								wz,
+								region.x * TEXTURE_SIZE,
+								region.y * TEXTURE_SIZE,
+								TEXTURE_SIZE,
+								TEXTURE_SIZE,
+								1,
+								1,
+								1,
+								block_info.alpha ?? 1,
+							);
+						} else {
+							opaque_vertices = ensure_capacity(opaque_vertices, opaque_count + (6 * 6 * 9));
+							opaque_count = FACE_PUSHING_FUNCTIONS[side](
+								opaque_vertices,
+								opaque_count,
+								image,
+								wx,
+								y,
+								wz,
+								region.x * TEXTURE_SIZE,
+								region.y * TEXTURE_SIZE,
+								TEXTURE_SIZE,
+								TEXTURE_SIZE,
+								1,
+								1,
+								1,
+								1,
+							);
+						}
 					}
 				}
 			}
 		}
 	}
 
-	return [vertices, count];
+	return [opaque_vertices, opaque_count, transparent_vertices, transparent_count];
 }
 
 function ensure_capacity(

common/everything_registry.ts

@@ -62,8 +62,10 @@ interface TextureFront {
 
 export interface BlockRegistry<T = unknown | undefined> {
 	textures: string | TextureSideTopBottom | TextureFront;
-	has_collision: boolean;
 	transparent?: boolean;
+	alpha?: number;
+
+	has_collision: boolean;
 	drop_table?: string;
 
 	on_create?(dimension: Dimension, block: Block<T>): void;