| <!DOCTYPE html> |
| <html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| function enableStates(gl) |
| { |
| gl.enable(gl.CULL_FACE); |
| gl.enable(gl.BLEND); |
| gl.enable(gl.DITHER); |
| gl.enable(gl.STENCIL_TEST); |
| gl.enable(gl.DEPTH_TEST); |
| gl.enable(gl.SCISSOR_TEST); |
| } |
| |
| function testStates(gl) |
| { |
| assert_true(gl.isEnabled(gl.CULL_FACE), 'CULL_FACE should be enabled'); |
| assert_true(gl.isEnabled(gl.BLEND), 'BLEND should be enabled'); |
| assert_true(gl.isEnabled(gl.DITHER), 'DITHER should be enabled'); |
| assert_true(gl.isEnabled(gl.STENCIL_TEST), 'STENCIL_TEST should be enabled'); |
| assert_true(gl.isEnabled(gl.DEPTH_TEST), 'DEPTH_TEST should be enabled'); |
| assert_true(gl.isEnabled(gl.SCISSOR_TEST), 'SCISSOR_TEST should be enabled'); |
| } |
| |
| test(function() { |
| var canvas = new OffscreenCanvas(100, 100); |
| var gl = canvas.getContext('webgl'); |
| enableStates(gl); |
| |
| gl.clearColor(0.0, 1.0, 0.0, 1.0); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| testStates(gl); |
| |
| var image = canvas.transferToImageBitmap(); |
| testStates(gl); |
| }, 'offscreenCanvas.transferToImageBitmap should not alter WebGL states'); |
| |
| test(function() { |
| var canvas = document.createElement('canvas'); |
| canvas.width = canvas.height = 100; |
| var offscreenCanvas = canvas.transferControlToOffscreen(); |
| var gl = offscreenCanvas.getContext('webgl'); |
| enableStates(gl); |
| |
| gl.clearColor(0.0, 1.0, 0.0, 1.0); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| testStates(gl); |
| |
| testStates(gl); |
| }, 'offscreenCanvas.commit should not alter WebGL states'); |
| </script> |
| </html> |
