diff options
Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance/rendering/color-mask-should-not-affect-antialiased-framebuffer-resolution.html')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/rendering/color-mask-should-not-affect-antialiased-framebuffer-resolution.html | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/rendering/color-mask-should-not-affect-antialiased-framebuffer-resolution.html b/dom/canvas/test/webgl-conf/checkout/conformance/rendering/color-mask-should-not-affect-antialiased-framebuffer-resolution.html new file mode 100644 index 0000000000..7bba52e9a9 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/rendering/color-mask-should-not-affect-antialiased-framebuffer-resolution.html @@ -0,0 +1,71 @@ +<!-- +Copyright (c) 2021 The Khronos Group Inc. +Use of this source code is governed by an MIT-style license that can be +found in the LICENSE.txt file. +--> + +<!DOCTYPE html> +<html> +<head> +<meta charset="utf-8"> +<title>WebGL ColorMask Should Not Affect Antialiased Framebuffer Resolution</title> +<link rel="stylesheet" href="../../resources/js-test-style.css"/> +<script src="../../js/js-test-pre.js"></script> +<script src="../../js/webgl-test-utils.js"></script> +</head> +<body> +<canvas id="canvas" width="8" height="8"></canvas> +<div id="description"></div> +<div id="console"></div> + +<script> +"use strict"; + +const wtu = WebGLTestUtils; +description("This test verifies that the colorMask state does not affect resolution of the antialiased framebuffer."); + +debug('Regression test for <a href="https://crbug.com/1257769">https://crbug.com/1257769</a> and <a href="https://bugs.webkit.org/show_bug.cgi?id=220129">https://bugs.webkit.org/show_bug.cgi?id=220129</a>'); + +function run() { + const gl = wtu.create3DContext("canvas", { antialias: true, alpha: true }); + + if (!gl) { + testFailed("WebGL context does not exist"); + finishTest(); + return; + } + + testPassed("WebGL context exists"); + + const program = wtu.setupColorQuad(gl); + + // Clear the default (multisampled) framebuffer to red. + gl.clearColor(1, 0, 0, 1); + gl.colorMask(true, true, true, true); + gl.clear(gl.COLOR_BUFFER_BIT); + + // Draw a transparent green quad. + gl.useProgram(program); + wtu.drawFloatColorQuad(gl, [ 0, 255, 0, 0 ]); + + // Clear the alpha channel. + gl.colorMask(false, false, false, true); + gl.clearColor(0, 0, 0, 1); + gl.clear(gl.COLOR_BUFFER_BIT); + + // At this point, even setting the colorMask to all-true won't + // work around the bug, since that state is latched inside ANGLE + // only during draws / clears. + + wtu.checkCanvas(gl, [ 0, 255, 0, 255 ], "should be green", 1); + finishTest(); +} + +var successfullyParsed = true; + +requestAnimationFrame(run); + +</script> + +</body> +</html> |