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| -rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-with-short-circuiting-operators.html | 156 |
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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-with-short-circuiting-operators.html b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-with-short-circuiting-operators.html new file mode 100644 index 0000000000..c05649aa83 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-with-short-circuiting-operators.html @@ -0,0 +1,156 @@ +<!-- +Copyright (c) 2019 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 short-circuit evaluation</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> +<div id="description"></div> +<div id="console"></div> +<canvas id="example" width="2" height="2"> </canvas> + +<!------------------------------------- + WebGL Shaders +----------------------------------------> +<!-- Pass through Shaders --> +<script id="vshader0" type="x-shader/x-vertex"> +/* PASS-THROUGH VERTEX SHADER */ +attribute vec4 vPosition; + +void main() +{ + gl_Position = vPosition; +} +</script> + +<script id="fshader0" type="x-shader/x-fragment"> +/* PASS-THROUGH FRAGMENT SHADER */ +precision mediump float; +varying vec4 vPassThrough; + +void main() +{ + gl_FragColor = vPassThrough; +} +</script> + +<!-- basic conditonal short circuit Shaders --> +<script id="vshader1" type="x-shader/x-vertex"> +attribute vec4 vPosition; +varying vec4 vPassThrough; + +void main() +{ + int x = 1; + $(variables) + + if ($(condition)) + { /*do nothing*/ } + + /* if x was unmodified return green, else return red */ + vPassThrough = (x == 1) ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1); + gl_Position = vPosition; +} +</script> + +<script id="fshader1" type="x-shader/x-fragment"> +precision mediump float; + +void main() +{ + int x = 1; + $(variables) + + if ($(condition)) + { /*do nothing*/ } + + gl_FragColor = (x == 1) ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1); +} +</script> + +<!-- Main body of the Webgl program --> +<script> +"use strict"; +description(); + +var wtu = WebGLTestUtils; +var gl = wtu.create3DContext(); + +wtu.setupUnitQuad(gl, [0, 1]); + +var shaderTemplates = [ + { vs: "vshader1", fs: "fshader0" }, // basic vertex short-circuit test + { vs: "vshader0", fs: "fshader1" }, // basic fragment short-circuit test +]; + +/* replace the names of the shaders in the tempate variables with + * the shaders themselves */ +for (var ii = 0; ii < shaderTemplates.length; ++ii) { + var template = shaderTemplates[ii]; + template.vs = wtu.getScript(template.vs); + template.fs = wtu.getScript(template.fs); +} + +/* define the conditon that will be used in the shaders. If additional + * variables are needed that are not present i the shader they my be + * defined in the variables variable */ +var tests = [ + { condition: "true || (x = 0) == 1", variables: "" }, /* test basic 'or' short circuit */ + { condition: "false && (x = 0) == 1", variables: "" }, /* test basic 'and' short circuit */ + { condition: "(j == 3 && j == k) || (j > (x = 0))", variables: "int j = 3;\nint k = 3;" }, /* test basic 'or' short circuit with actual condition */ + { condition: "(j == 3 && j == k) && (j > (x = 0))", variables: "int j = 3;\nint k = 4;" }, /* test basic 'and' short circuit with actual condition */ + { condition: "(j + 3 > k && ((j < 10) || (x + 5 > j + (x = 0))) || ( x = 0 ) == 7)", variables: "int j = 5;\nint k = 3;" }, /* complex test */ + { condition: "j + 1 == 6 ? x == 1 || j > (x = 0) : (x = 0) == 1 && (x = 0) <= 1", variables: "int j = 5;" }, /* nested with ternary operator */ + { condition: "true && (true || (x = 0) == 1)", variables: "" }, /* test unfold short circuit update order correctness */ +]; + +function testShortCircuit(test) { + debug(""); + debug("testing short circuit condition: " + test.condition); + + /* Setting clear color to blue */ + gl.clearColor(0.0, 0.0, 1.0, 1.0); + + for (var ii = 0; ii < shaderTemplates.length; ++ii) { + + /* clear the screen so that subsequent tests don't conflict */ + gl.clear(gl.COLOR_BUFFER_BIT); + var template = shaderTemplates[ii]; + + var vs = wtu.replaceParams(template.vs, test); + var fs = wtu.replaceParams(template.fs, test); + + var program = wtu.setupProgram(gl, [vs, fs], ['vPosition'], undefined, true); + + wtu.clearAndDrawUnitQuad(gl); + wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green", 0); + + gl.deleteProgram(program); + + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no GL errors"); + } +} + +var testNdx = 0; +function runNextTest() { + testShortCircuit(tests[testNdx++]); + if (testNdx >= tests.length) { + finishTest(); + } else { + setTimeout(runNextTest, 0); + } +} + +runNextTest(); +</script> +</body> +</html> |