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authorMaze Winther <mazewinther@gmail.com>2026-03-25 16:47:22 +0100
committerMaze Winther <mazewinther@gmail.com>2026-03-29 15:48:22 +0200
commit8db3bead13441a5882d8689dfc6a9f09c82375d9 (patch)
treee9d0cafa93904ffcbec3188c37961bcc16c6422d /apps/web/src/services/renderer/webgl/webgl-utils.ts
parent39ea298a9ccba3104c549c0ca079c231981811f5 (diff)
downloadopencut-8db3bead13441a5882d8689dfc6a9f09c82375d9.tar.gz
feat: masks, properties refactor, shaders, storage migrations, and more
Diffstat (limited to 'apps/web/src/services/renderer/webgl/webgl-utils.ts')
-rw-r--r--apps/web/src/services/renderer/webgl/webgl-utils.ts298
1 files changed, 298 insertions, 0 deletions
diff --git a/apps/web/src/services/renderer/webgl/webgl-utils.ts b/apps/web/src/services/renderer/webgl/webgl-utils.ts
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+++ b/apps/web/src/services/renderer/webgl/webgl-utils.ts
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+import VERTEX_SHADER_SOURCE from "@/lib/effects/effect.vert.glsl";
+
+export interface EffectPassData {
+ fragmentShader: string;
+ uniforms: Record<string, number | number[]>;
+}
+
+export const QUAD_POSITIONS = new Float32Array([
+ -1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, 1,
+]);
+
+export function compileProgram({
+ context,
+ fragmentShaderSource,
+ programCache,
+}: {
+ context: WebGLRenderingContext;
+ fragmentShaderSource: string;
+ programCache: Map<string, WebGLProgram>;
+}): WebGLProgram {
+ const cached = programCache.get(fragmentShaderSource);
+ if (cached) {
+ return cached;
+ }
+ const vertexShader = compileShader({
+ context,
+ source: VERTEX_SHADER_SOURCE,
+ type: context.VERTEX_SHADER,
+ });
+ const fragmentShader = compileShader({
+ context,
+ source: fragmentShaderSource,
+ type: context.FRAGMENT_SHADER,
+ });
+ const program = context.createProgram();
+ if (!program) {
+ throw new Error("Failed to create WebGL program");
+ }
+ context.attachShader(program, vertexShader);
+ context.attachShader(program, fragmentShader);
+ context.linkProgram(program);
+ if (!context.getProgramParameter(program, context.LINK_STATUS)) {
+ const info = context.getProgramInfoLog(program);
+ context.deleteProgram(program);
+ throw new Error(`WebGL program link failed: ${info}`);
+ }
+ context.deleteShader(vertexShader);
+ context.deleteShader(fragmentShader);
+ programCache.set(fragmentShaderSource, program);
+ return program;
+}
+
+export function compileShader({
+ context,
+ source,
+ type,
+}: {
+ context: WebGLRenderingContext;
+ source: string;
+ type: number;
+}): WebGLShader {
+ const shader = context.createShader(type);
+ if (!shader) {
+ throw new Error("Failed to create WebGL shader");
+ }
+ context.shaderSource(shader, source);
+ context.compileShader(shader);
+ if (!context.getShaderParameter(shader, context.COMPILE_STATUS)) {
+ const info = context.getShaderInfoLog(shader);
+ context.deleteShader(shader);
+ throw new Error(`WebGL shader compile failed: ${info}`);
+ }
+ return shader;
+}
+
+export function createTexture({
+ context,
+ source,
+}: {
+ context: WebGLRenderingContext;
+ source: CanvasImageSource;
+}): WebGLTexture {
+ const texture = context.createTexture();
+ if (!texture) {
+ throw new Error("Failed to create WebGL texture");
+ }
+ context.activeTexture(context.TEXTURE0);
+ context.bindTexture(context.TEXTURE_2D, texture);
+ context.pixelStorei(context.UNPACK_FLIP_Y_WEBGL, 1);
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_WRAP_S,
+ context.CLAMP_TO_EDGE,
+ );
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_WRAP_T,
+ context.CLAMP_TO_EDGE,
+ );
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_MIN_FILTER,
+ context.LINEAR,
+ );
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_MAG_FILTER,
+ context.LINEAR,
+ );
+ context.texImage2D(
+ context.TEXTURE_2D,
+ 0,
+ context.RGBA,
+ context.RGBA,
+ context.UNSIGNED_BYTE,
+ source as TexImageSource,
+ );
+ return texture;
+}
+
+export function setUniforms({
+ context,
+ program,
+ uniforms,
+}: {
+ context: WebGLRenderingContext;
+ program: WebGLProgram;
+ uniforms: Record<string, number | number[]>;
+}): void {
+ for (const [name, value] of Object.entries(uniforms)) {
+ const location = context.getUniformLocation(program, name);
+ if (location === null) continue;
+
+ if (typeof value === "number") {
+ context.uniform1f(location, value);
+ } else if (Array.isArray(value)) {
+ if (value.length === 2) {
+ context.uniform2fv(location, new Float32Array(value));
+ } else if (value.length === 3) {
+ context.uniform3fv(location, new Float32Array(value));
+ } else if (value.length === 4) {
+ context.uniform4fv(location, new Float32Array(value));
+ }
+ }
+ }
+}
+
+export function drawFullscreenQuad({
+ context,
+ program,
+ width,
+ height,
+}: {
+ context: WebGLRenderingContext;
+ program: WebGLProgram;
+ width: number;
+ height: number;
+}): void {
+ const positionLocation = context.getAttribLocation(program, "a_position");
+ const buffer = context.createBuffer();
+ context.bindBuffer(context.ARRAY_BUFFER, buffer);
+ context.bufferData(context.ARRAY_BUFFER, QUAD_POSITIONS, context.STATIC_DRAW);
+ context.enableVertexAttribArray(positionLocation);
+ context.vertexAttribPointer(positionLocation, 2, context.FLOAT, false, 0, 0);
+
+ context.viewport(0, 0, width, height);
+ context.clearColor(0, 0, 0, 0);
+ context.clear(context.COLOR_BUFFER_BIT);
+ context.drawArrays(context.TRIANGLES, 0, 6);
+}
+
+export function createFramebufferTexture({
+ context,
+ width,
+ height,
+}: {
+ context: WebGLRenderingContext;
+ width: number;
+ height: number;
+}): { texture: WebGLTexture; framebuffer: WebGLFramebuffer } {
+ const texture = context.createTexture();
+ if (!texture) throw new Error("Failed to create framebuffer texture");
+ context.bindTexture(context.TEXTURE_2D, texture);
+ context.texImage2D(
+ context.TEXTURE_2D,
+ 0,
+ context.RGBA,
+ width,
+ height,
+ 0,
+ context.RGBA,
+ context.UNSIGNED_BYTE,
+ null,
+ );
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_WRAP_S,
+ context.CLAMP_TO_EDGE,
+ );
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_WRAP_T,
+ context.CLAMP_TO_EDGE,
+ );
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_MIN_FILTER,
+ context.LINEAR,
+ );
+ context.texParameteri(
+ context.TEXTURE_2D,
+ context.TEXTURE_MAG_FILTER,
+ context.LINEAR,
+ );
+ context.bindTexture(context.TEXTURE_2D, null);
+
+ const framebuffer = context.createFramebuffer();
+ if (!framebuffer) throw new Error("Failed to create framebuffer");
+ context.bindFramebuffer(context.FRAMEBUFFER, framebuffer);
+ context.framebufferTexture2D(
+ context.FRAMEBUFFER,
+ context.COLOR_ATTACHMENT0,
+ context.TEXTURE_2D,
+ texture,
+ 0,
+ );
+ context.bindFramebuffer(context.FRAMEBUFFER, null);
+
+ return { texture, framebuffer };
+}
+
+export function applyMultiPassEffect({
+ context,
+ source,
+ width,
+ height,
+ passes,
+ programCache,
+}: {
+ context: WebGLRenderingContext;
+ source: CanvasImageSource;
+ width: number;
+ height: number;
+ passes: EffectPassData[];
+ programCache: Map<string, WebGLProgram>;
+}): void {
+ const sourceTexture = createTexture({ context, source });
+ let currentTexture: WebGLTexture = sourceTexture;
+
+ const intermediates: Array<{
+ texture: WebGLTexture;
+ framebuffer: WebGLFramebuffer;
+ }> = [];
+ for (let i = 0; i < passes.length - 1; i++) {
+ intermediates.push(createFramebufferTexture({ context, width, height }));
+ }
+
+ for (let i = 0; i < passes.length; i++) {
+ const pass = passes[i];
+ const program = compileProgram({
+ context,
+ fragmentShaderSource: pass.fragmentShader,
+ programCache,
+ });
+ const isLastPass = i === passes.length - 1;
+ const targetFramebuffer = isLastPass ? null : intermediates[i].framebuffer;
+
+ context.bindFramebuffer(context.FRAMEBUFFER, targetFramebuffer);
+ // biome-ignore lint/correctness/useHookAtTopLevel: WebGL API method, not a React hook
+ context.useProgram(program);
+ context.activeTexture(context.TEXTURE0);
+ context.bindTexture(context.TEXTURE_2D, currentTexture);
+
+ const uTextureLocation = context.getUniformLocation(program, "u_texture");
+ if (uTextureLocation) {
+ context.uniform1i(uTextureLocation, 0);
+ }
+
+ setUniforms({
+ context,
+ program,
+ uniforms: { ...pass.uniforms, u_resolution: [width, height] },
+ });
+ drawFullscreenQuad({ context, program, width, height });
+
+ if (!isLastPass) {
+ currentTexture = intermediates[i].texture;
+ }
+ }
+
+ context.deleteTexture(sourceTexture);
+ for (const intermediate of intermediates) {
+ context.deleteTexture(intermediate.texture);
+ context.deleteFramebuffer(intermediate.framebuffer);
+ }
+ context.bindTexture(context.TEXTURE_2D, null);
+ context.bindFramebuffer(context.FRAMEBUFFER, null);
+}