When the context is lost, silently ignore failed shader compilation (#…

…5644)

Co-authored-by: Martin Valigursky <[email protected]>

src/platform/graphics/webgl/webgl-shader.js

@@ -149,13 +149,18 @@ class WebglShader {
  if (this.glProgram)
  return;
 
+ // if the device is lost, silently ignore
+ const gl = device.gl;
+ if (gl.isContextLost()) {
+ return;
+ }
+
  let startTime = 0;
  Debug.call(() => {
  this.compileDuration = 0;
  startTime = now();
  });
 
- const gl = device.gl;
  const glProgram = gl.createProgram();
  this.glProgram = glProgram;
 
@@ -235,6 +240,11 @@ class WebglShader {
 
  glShader = gl.createShader(isVertexShader ? gl.VERTEX_SHADER : gl.FRAGMENT_SHADER);
 
+ // if the device is lost, silently ignore
+ if (!glShader && gl.isContextLost()) {
+ return glShader;
+ }
+
  gl.shaderSource(glShader, src);
  gl.compileShader(glShader);
 
@@ -268,11 +278,16 @@ class WebglShader {
  */
  finalize(device, shader) {
 
+ // if the device is lost, silently ignore
+ const gl = device.gl;
+ if (gl.isContextLost()) {
+ return true;
+ }
+
  // if the program wasn't linked yet (shader was not created in batch)
  if (!this.glProgram)
  this.link(device, shader);
 
- const gl = device.gl;
  const glProgram = this.glProgram;
  const definition = shader.definition;