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| -rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-varying-packing-restrictions.html | 188 |
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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-varying-packing-restrictions.html b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-varying-packing-restrictions.html new file mode 100644 index 0000000000..741ad7b63f --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-varying-packing-restrictions.html @@ -0,0 +1,188 @@ +<!-- +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 varying packing restrictions Conformance Test</title> +<link rel="stylesheet" href="../../../resources/js-test-style.css"/> +<link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/> +<script src="../../../js/js-test-pre.js"></script> +<script src="../../../js/webgl-test-utils.js"></script> +<script src="../../../js/glsl-conformance-test.js"></script> +</head> +<body> +<div id="description"></div> +<div id="console"></div> +<canvas id="example" width="2" height="2"> </canvas> +<script id="vshaderArrayTest" type="x-shader/x-vertex"> +attribute vec4 a_position; +varying $(type) v_varying[$(numTestType)]; +void main() +{ + gl_Position = a_position; + $(vcode) +} +</script> +<script id="fshaderArrayTest" type="x-shader/x-fragment"> +precision mediump float; +varying $(type) v_varying[$(numTestType)]; +void main() +{ + gl_FragColor = $(fcode); +} +</script> +<script id="vshaderVaryingTest" type="x-shader/x-fragment"> +attribute vec4 a_position; +$(varyings) +void main() +{ + gl_Position = a_position; + $(vcode) +} +</script> +<script id="fshaderVaryingTest" type="x-shader/x-fragment"> +precision mediump float; +$(varyings) +void main() +{ + gl_FragColor = $(fcode); +} +</script> +<script> +"use strict"; +description(); +debug(""); +var wtu = WebGLTestUtils; +var gl = wtu.create3DContext("example"); + +var varyingTypes = [ + { type: "float", componentsPerRow: 1, rows: 1, vcode: "v_varying$(id)$(index) = 1.0;", fcode: "vec4(v_varying$(id)$(index), 0, 0, 0)", }, + { type: "vec2", componentsPerRow: 2, rows: 1, vcode: "v_varying$(id)$(index) = vec2(0, 0);", fcode: "vec4(v_varying$(id)$(index), 0, 0)", }, + { type: "vec3", componentsPerRow: 3, rows: 1, vcode: "v_varying$(id)$(index) = vec3(0, 0, 0);", fcode: "vec4(v_varying$(id)$(index), 0)", }, + { type: "vec4", componentsPerRow: 4, rows: 1, vcode: "v_varying$(id)$(index) = vec4(0, 0, 0, 0);", fcode: "vec4(v_varying$(id)$(index))", }, +// Yes, the spec says mat2 takes 4 columns, 2 rows. + { type: "mat2", componentsPerRow: 4, rows: 2, vcode: "v_varying$(id)$(index) = mat2(1.0);", fcode: "vec4(v_varying$(id)$(index)[0], 0, 0)", }, + { type: "mat3", componentsPerRow: 3, rows: 3, vcode: "v_varying$(id)$(index) = mat3(1.0);", fcode: "vec4(v_varying$(id)$(index)[0], 0)", }, + { type: "mat4", componentsPerRow: 4, rows: 4, vcode: "v_varying$(id)$(index) = mat4(1.0);", fcode: "vec4(v_varying$(id)$(index)[0])", }, +]; + +var vArrayTestSource = wtu.getScript("vshaderArrayTest"); +var fArrayTestSource = wtu.getScript("fshaderArrayTest"); +var vVaryingTestSource = wtu.getScript("vshaderVaryingTest"); +var fVaryingTestSource = wtu.getScript("fshaderVaryingTest"); + +var minVaryingVectors = 8; +var maxVaryingVectors = gl.getParameter(gl.MAX_VARYING_VECTORS); +var tests = []; + +for (var ii = 0; ii < varyingTypes.length; ++ii) { + var info = varyingTypes[ii]; + wtu.log("checking: " + info.type); + // Compute the maximum amount of this type allowed in a single array. + var numVars = Math.floor(maxVaryingVectors / info.rows); + // Compute the minimum required to work in a single array. + var minVars = Math.floor(minVaryingVectors / info.rows); + // Compute the maximum allowed as single elements + var numPerRow = Math.floor(4 / info.componentsPerRow); + var numMax = Math.floor(maxVaryingVectors * numPerRow / info.rows); + + // Test array[1] of the type + var vcode = wtu.replaceParams(info.vcode, {id: "", index: "[0]"}); + var fcode = wtu.replaceParams(info.fcode, {id: "", index: "[0]"}); + tests.push({ + vShaderSource: wtu.replaceParams(vArrayTestSource, {numTestType: 1, vcode: vcode}, info), + vShaderSuccess: true, + fShaderSource: wtu.replaceParams(fArrayTestSource, {numTestType: 1, fcode: fcode}, info), + fShaderSuccess: true, + linkSuccess: true, + passMsg: "shaders with varying array of " + info.type + " with 1 element should succeed", + }); + + // Test required number of varyings + var vcode = wtu.replaceParams(info.vcode, {id: "", index: "[" + (minVars - 1) + "]"}); + var fcode = wtu.replaceParams(info.fcode, {id: "", index: "[" + (minVars - 1) + "]"}); + tests.push({ + vShaderSource: wtu.replaceParams(vArrayTestSource, {numTestType: minVars, vcode: vcode}, info), + vShaderSuccess: true, + fShaderSource: wtu.replaceParams(fArrayTestSource, {numTestType: minVars, fcode: fcode}, info), + fShaderSuccess: true, + linkSuccess: true, + passMsg: "shaders with varying array of " + info.type + " with " + minVars + " elements (the minimum required) should succeed", + }); + + // Test array[max + 1] accessing last element. WebGL requires this to fail. + var vcode = wtu.replaceParams(info.vcode, {id: "", index: "[" + numVars + "]"}); + var fcode = wtu.replaceParams(info.fcode, {id: "", index: "[" + numVars + "]"}); + tests.push({ + vShaderSource: wtu.replaceParams(vArrayTestSource, {numTestType: numVars + 1, vcode: vcode}, info), + vShaderSuccess: false, + fShaderSource: wtu.replaceParams(fArrayTestSource, {numTestType: numVars + 1, fcode: fcode}, info), + fShaderSuccess: false, + linkSuccess: false, + passMsg: "shaders with varying array of " + info.type + " with " + (numVars + 1) + " elements (one past maximum) accessing last element should fail", + }); + + // Test array[max + 1] accessing first element. WebGL requires this to fail but ES allows truncating array. + var vcode = wtu.replaceParams(info.vcode, {id: "", index: "[0]"}); + var fcode = wtu.replaceParams(info.fcode, {id: "", index: "[0]"}); + tests.push({ + vShaderSource: wtu.replaceParams(vArrayTestSource, {numTestType: numVars + 1, vcode: vcode}, info), + vShaderSuccess: false, + fShaderSource: wtu.replaceParams(fArrayTestSource, {numTestType: numVars + 1, fcode: fcode}, info), + fShaderSuccess: false, + linkSuccess: false, + passMsg: "shaders with varying array of " + info.type + " with " + (numVars + 1) + " elements (one past maximum) accessing first element should fail", + }); + + // Note: We can't test max varyings as actual GL drivers are only required to be able to + // do the minimum number. After that it can fail for any reason, for example running out of + // instruction space. + + var generateCode = function(numVars) { + var varyings = []; + var vcodes = []; + var fcodes = []; + for (var uu = 0; uu < numVars; ++uu) { + varyings.push(" varying " + info.type + " v_varying" + uu + ";"); + vcodes.push(wtu.replaceParams(info.vcode, {id: uu, index: ""})); + fcodes.push(wtu.replaceParams(info.fcode, {id: uu, index: ""})); + } + return { + varyings: varyings.join("\n"), + vcode: vcodes.join("\n "), + fcode: fcodes.join(" + \n "), + }; + }; + + // Test max+1 varyings of type. + tests.push({ + vShaderSource: wtu.replaceParams(vVaryingTestSource, generateCode(numMax + 1), info), + vShaderSuccess: false, + fShaderSource: wtu.replaceParams(fVaryingTestSource, generateCode(numMax + 1), info), + fShaderSuccess: false, + linkSuccess: false, + passMsg: "shaders with " + (numMax + 1) + " varyings of " + info.type + " (one past maximum) should fail", + }); + + // Test required varyings of type. + tests.push({ + vShaderSource: wtu.replaceParams(vVaryingTestSource, generateCode(minVars), info), + vShaderSuccess: true, + fShaderSource: wtu.replaceParams(fVaryingTestSource, generateCode(minVars), info), + fShaderSuccess: true, + linkSuccess: true, + passMsg: "shaders with " + minVars + " varyings of " + info.type + " (the minimum required) should succeed", + }); +} + +GLSLConformanceTester.runTests(tests); +var successfullyParsed = true; +</script> +</body> +</html> + |