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Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/precision-side-effects-bug.html')
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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/precision-side-effects-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/precision-side-effects-bug.html new file mode 100644 index 0000000000..c717c4ee94 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/precision-side-effects-bug.html @@ -0,0 +1,125 @@ +<!-- +Copyright (c) 2020 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>Verify precision side effects (Adreno driver bug)</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="2" height="2"> </canvas> +<div id="description"></div> +<div id="console"></div> + +<script id="vshader-simple" type="x-shader/x-vertex">#version 300 es +in vec3 aPosition; + +void main() { + gl_Position = vec4(aPosition, 1.0); +} +</script> +<script id="fshader-int" type="x-shader/x-fragment">#version 300 es +out highp vec4 myFragColor; +void main() { + highp int t; + t = 0 | (int(t == t) * 0x8000); + + if (t == 0x8000) + myFragColor = vec4(1.0, 0.0, 0.0, 1.0); + else + myFragColor = vec4(0.0, 0.0, 0.0, 1.0); +} +</script> +<script id="fshader-ivec2" type="x-shader/x-fragment">#version 300 es +out highp vec4 myFragColor; +void main() { + highp ivec2 t; + t = 0 | (ivec2(t == t) * 0x8000); + + if (t == ivec2(0x8000)) + myFragColor = vec4(1.0, 0.0, 0.0, 1.0); + else + myFragColor = vec4(0.0, 0.0, 0.0, 1.0); +} +</script> +<script id="fshader-ivec3" type="x-shader/x-fragment">#version 300 es +out highp vec4 myFragColor; +void main() { + highp ivec3 t; + t = 0 | (ivec3(t == t) * 0x8000); + + if (t == ivec3(0x8000)) + myFragColor = vec4(1.0, 0.0, 0.0, 1.0); + else + myFragColor = vec4(0.0, 0.0, 0.0, 1.0); +} +</script> +<script id="fshader-ivec4" type="x-shader/x-fragment">#version 300 es +out highp vec4 myFragColor; +void main() { + highp ivec4 t; + t = 0 | (ivec4(t == t) * 0x8000); + + if (t == ivec4(0x8000)) + myFragColor = vec4(1.0, 0.0, 0.0, 1.0); + else + myFragColor = vec4(0.0, 0.0, 0.0, 1.0); +} +</script> +<script type="application/javascript"> +"use strict"; +description("Verify precision side effects"); +debug(""); +debug("When this test is run on Adreno (no repros on other vendors so far):"); +debug(" - the result of the expression 0 | (int(e0 == e0) * 0x8000) somehow returns -32768 instead of 32768 despite the variable using highp precision;"); +debug(" - splitting the expression along | fixes the issue (could also be observed with other operators)."); +debug('For additional reference see this <a href="https://github.com/KhronosGroup/WebGL/pull/3192">pull request</a> and <a href="http://crbug.com/1155942">Chromium bug</a>'); +debug(""); +var wtu = WebGLTestUtils; +function test() { + var gl = wtu.create3DContext("canvas", undefined, 2); + if (!gl) { + testFailed("context does not exist"); + return; + } + wtu.setupUnitQuad(gl); + + var testCases = [ + { vshader: "vshader-simple", fshader: "fshader-int", desc: "fragment shader int" }, + { vshader: "vshader-simple", fshader: "fshader-ivec2", desc: "fragment shader ivec2" }, + { vshader: "vshader-simple", fshader: "fshader-ivec3", desc: "fragment shader ivec3" }, + { vshader: "vshader-simple", fshader: "fshader-ivec4", desc: "fragment shader ivec4" }, + ]; + + for (var idx = 0; idx < testCases.length; ++idx) { + var test = testCases[idx]; + + debug(""); + var program = wtu.setupProgram(gl, [test.vshader, test.fshader], ["aPosition"]); + if (!program) { + testFailed("Fail to set up program"); + } else { + debug("Testing " + test.desc); + wtu.drawUnitQuad(gl); + wtu.checkCanvas(gl, [255, 0, 0, 255]); + gl.deleteProgram(program); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from testing"); + } + } +}; + +test(); + +debug(""); +var successfullyParsed = true; +</script> +<script src="../../js/js-test-post.js"></script> +</body> +</html> |