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Fix angle backend detection, though that should no longer be relevant

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Tamius Han 2025-10-08 15:06:19 +02:00
parent 8c96e2fd90
commit 7ae3fb6109
1 changed files with 35 additions and 27 deletions
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62
src/ext/lib/angle-detect/detect-angle-backend.ts
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@ -93,38 +93,46 @@ function detectBackend(str) {
* @returns
*/
function detectANGLEBackend(): AngleVersion {
const canvas = document.createElement("canvas");
const gl = canvas.getContext("webgl2") ||
canvas.getContext("webgl") ||
canvas.getContext("experimental-webgl");
try {
const canvas = document.createElement("canvas");
const gl = canvas.getContext("webgl2") ||
canvas.getContext("webgl") ||
canvas.getContext("experimental-webgl");
const ext = (gl as any).getExtension("WEBGL_debug_shaders");
if (!ext) {
return AngleVersion.NotAvailable;
}
const isWebGL1 = gl instanceof WebGLRenderingContext;
const shader = (gl as any).createShader((gl as any).VERTEX_SHADER);
(gl as any).shaderSource(
shader,
`#version ${isWebGL1 ? "100" : "300 es"}
void main() {
gl_Position = vec4(__VERSION__, 1.0, 1.0, 1.0);
if (!gl) {
return AngleVersion.NotAvailable;
}
`
);
(gl as any).compileShader(shader);
const ext = (gl as any).getExtension("WEBGL_debug_shaders");
if (!(gl as any).getShaderParameter(shader, (gl as any).COMPILE_STATUS)) {
console.error("invalid shader", (gl as any).getShaderInfoLog(shader));
if (!ext) {
return AngleVersion.NotAvailable;
}
const isWebGL1 = gl instanceof WebGLRenderingContext;
const shader = (gl as any).createShader((gl as any).VERTEX_SHADER);
(gl as any).shaderSource(
shader,
`#version ${isWebGL1 ? "100" : "300 es"}
void main() {
gl_Position = vec4(__VERSION__, 1.0, 1.0, 1.0);
}
`
);
(gl as any).compileShader(shader);
if (!(gl as any).getShaderParameter(shader, (gl as any).COMPILE_STATUS)) {
console.error("invalid shader", (gl as any).getShaderInfoLog(shader));
return AngleVersion.NotAvailable;
}
const source = ext.getTranslatedShaderSource(shader);
return detectBackend(source);
} catch (e) {
return AngleVersion.NotAvailable;
}
const source = ext.getTranslatedShaderSource(shader);
return detectBackend(source);
}