Add more improvements

src/graphics/graphics-library/compiling/check-program.ts

@@ -3,7 +3,7 @@ import { checkShader } from './check-shader';
 export const checkProgram = (gl: WebGL2RenderingContext, program: WebGLProgram) => {
   const success = gl.getProgramParameter(program, gl.LINK_STATUS);
 
-  if (!success) {
+  if (!success && !gl.isContextLost()) {
     gl.getAttachedShaders(program)?.forEach((s) => {
       checkShader(gl, s);
     });

src/graphics/graphics-library/compiling/check-shader.ts

@@ -1,7 +1,7 @@
 export const checkShader = (gl: WebGL2RenderingContext, shader: WebGLShader) => {
   const success = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
 
-  if (!success) {
+  if (!success && !gl.isContextLost()) {
     throw new Error(gl.getShaderInfoLog(shader)!);
   }
 };

src/graphics/graphics-library/compiling/create-program.ts

@@ -7,11 +7,8 @@ export const createProgram = (
   fragmentShaderSource: string,
   substitutions: { [name: string]: string }
 ): WebGLProgram => {
-  const program = gl.createProgram();
-
-  if (!program) {
-    throw new Error('Could not create program');
-  }
+  // can only return null on lost context
+  const program = gl.createProgram()!;
 
   // const extension = tryEnableExtension(gl, 'KHR_parallel_shader_compile');
 
@@ -43,5 +40,8 @@ export const createProgram = (
 
   checkProgram(gl, program);
 
+  gl.deleteShader(vertexShader);
+  gl.deleteShader(fragmentShader);
+
   return program;
 };

src/graphics/graphics-library/compiling/create-shader.ts

@@ -9,11 +9,8 @@ export const createShader = (
     return Number.isInteger(value) ? `${value}.0` : value;
   });
 
-  const shader = gl.createShader(type);
-
-  if (!shader) {
-    throw new Error('Could not create shader');
-  }
+  // can only return null on lost context
+  const shader = gl.createShader(type)!;
 
   gl.shaderSource(shader, source);
   gl.compileShader(shader);