LayoutTests/webgl/1.0.2/resources/webgl_test_files/conformance/uniforms/uniform-default-values.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2012 The Khronos Group Inc.
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a
 ** copy of this software and/or associated documentation files (the
 ** "Materials"), to deal in the Materials without restriction, including
 ** without limitation the rights to use, copy, modify, merge, publish,
 ** distribute, sublicense, and/or sell copies of the Materials, and to
 ** permit persons to whom the Materials are furnished to do so, subject to
 ** the following conditions:
 **
 ** The above copyright notice and this permission notice shall be included
 ** in all copies or substantial portions of the Materials.
 **
 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
 */

 -->

 <!DOCTYPE html>
 <html>
 <head>
 <meta charset="utf-8">
 <title>WebGL uniform default values</title>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></script>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test.js"></script>
 <script src="../resources/webgl-test-utils.js"></script>
 <script src="../../resources/test-eval.js"></script>
 </head>
 <body>
 <div id="description"></div>
 <div id="console"></div>
 <canvas id="example" width="2" height="2"> </canvas>
 <script id="vshader0" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 void main()
 {
     gl_Position = vPosition;
 }
 </script>
 <script id="fshader0" type="x-shader/x-fragment">
 precision mediump float;
 uniform $(type) u_uniform;

 bool isZero($(type) value) {
  $(check);
 }

 void main()
 {
   gl_FragColor = isZero(u_uniform) ? vec4(0,1,0,1) : vec4(1,0,0,1);
 }
 </script>
 <script id="vshader1" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 varying vec4 v_color;
 uniform $(type) u_uniform;

 bool isZero($(type) value) {
    $(check);
 }

 void main()
 {
     gl_Position = vPosition;
     v_color = isZero(u_uniform) ? vec4(0,1,0,1) : vec4(1,0,0,1);
 }
 </script>
 <script id="fshader1" type="x-shader/x-fragment">
 precision mediump float;
 varying vec4 v_color;
 void main()
 {
     gl_FragColor = v_color;
 }
 </script>
 <script id="vshader2" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 void main()
 {
     gl_Position = vPosition;
 }
 </script>
 <script id="fshader2" type="x-shader/x-fragment">
 precision mediump float;
 uniform $(type) u_uniform[2];

 bool isZero($(type) value) {
   $(check);
 }

 void main()
 {
   gl_FragColor = isZero(u_uniform[1]) ? vec4(0,1,0,1) : vec4(1,0,0,1);
 }
 </script>
 <script id="vshader3" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 varying vec4 v_color;
 uniform $(type) u_uniform[2];

 bool isZero($(type) value) {
    $(check);
 }

 void main()
 {
     gl_Position = vPosition;
     v_color = isZero(u_uniform[1]) ? vec4(0,1,0,1) : vec4(1,0,0,1);
 }
 </script>
 <script id="fshader3" type="x-shader/x-fragment">
 precision mediump float;
 varying vec4 v_color;
 void main()
 {
     gl_FragColor = v_color;
 }
 </script>
 <script>
 "use strict";
 description();

 var tests = [
 { type: 'float',
   check: "return value == 0.0",
   setFn: function(gl, loc) { gl.uniform1f(loc, 3.0); }
 },
 { type: 'int',
   check: "return value == 0",
   setFn: function(gl, loc) { gl.uniform1i(loc, 3.0); }
 },
 { type: 'bool',
   check: "return value == false",
   setFn: function(gl, loc) { gl.uniform1i(loc, 1); }
 },
 { type: 'vec2',
   check: "return value[0] == 0.0 && value[1] == 0.0",
   setFn: function(gl, loc) { gl.uniform2f(loc, 3.0, 3.0); }
 },
 { type: 'vec3',
   check: "return value[0] == 0.0 && value[1] == 0.0 && value[2] == 0.0",
   setFn: function(gl, loc) { gl.uniform3f(loc, 3.0, 3.0, 3.0); }
 },
 { type: 'vec4',
   check: "return value[0] == 0.0 && value[1] == 0.0 && value[2] == 0.0 && value[3] == 0.0",
   setFn: function(gl, loc) { gl.uniform4f(loc, 3.0, 3.0, 3.0, 3.0); }
 },
 { type: 'ivec2',
   check: "return value[0] == 0 && value[1] == 0",
   setFn: function(gl, loc) { gl.uniform2i(loc, 3, 3); }
 },
 { type: 'ivec3',
   check: "return value[0] == 0 && value[1] == 0 && value[2] == 0",
   setFn: function(gl, loc) { gl.uniform3i(loc, 3, 3, 3); }
 },
 { type: 'ivec4',
   check: "return value[0] == 0 && value[1] == 0 && value[2] == 0 && value[3] == 0",
   setFn: function(gl, loc) { gl.uniform4i(loc, 3, 3, 3, 3); }
 },
 { type: 'bvec2',
   check: "return value[0] == false && value[1] == false",
   setFn: function(gl, loc) { gl.uniform2i(loc, 1, 1); }
 },
 { type: 'bvec3',
   check: "return value[0] == false && value[1] == false && value[2] == false",
   setFn: function(gl, loc) { gl.uniform3i(loc, 1, 1, 1); }
 },
 { type: 'bvec4',
   check: "return value[0] == false && value[1] == false && value[2] == false && value[3] == false",
   setFn: function(gl, loc) { gl.uniform4i(loc, 1, 1, 1, 1); }
 },
 { type: 'mat2',
   check:
     "return " +
     "value[0][0] == 0.0 && value[0][1] == 0.0 && " +
     "value[1][0] == 0.0 && value[1][0] == 0.0",
   valueCheck:
     "return " +
     "value[0] == 0.0 && value[1] == 0.0 && " +
     "value[2] == 0.0 && value[3] == 0.0",
   setFn: function(gl, loc) { gl.uniformMatrix2fv(loc, false, [1, 1, 1, 1]); }
 },
 { type: 'mat3',
   check:
     "return " +
     "value[0][0] == 0.0 && value[1][0] == 0.0 && value[2][0] == 0.0 && " +
     "value[0][1] == 0.0 && value[1][1] == 0.0 && value[2][1] == 0.0 && " +
     "value[0][2] == 0.0 && value[1][2] == 0.0 && value[2][2] == 0.0",
   valueCheck:
     "return " +
     "value[0] == 0.0 && value[1] == 0.0 && value[2] == 0.0 && " +
     "value[3] == 0.0 && value[4] == 0.0 && value[5] == 0.0 && " +
     "value[6] == 0.0 && value[7] == 0.0 && value[8] == 0.0",
   setFn: function(gl, loc) { gl.uniformMatrix3fv(loc, false, [1, 1, 1, 1, 1, 1, 1, 1, 1]); }
 },
 { type: 'mat4',
   check:
     "return " +
     "value[0][0] == 0.0 && value[1][0] == 0.0 && value[2][0] == 0.0 && value[3][0] == 0.0 && " +
     "value[0][1] == 0.0 && value[1][1] == 0.0 && value[2][1] == 0.0 && value[3][1] == 0.0 && " +
     "value[0][2] == 0.0 && value[1][2] == 0.0 && value[2][2] == 0.0 && value[3][2] == 0.0 && " +
     "value[0][3] == 0.0 && value[1][3] == 0.0 && value[2][3] == 0.0 && value[3][3] == 0.0",
   valueCheck:
     "return " +
     "value[ 0] == 0.0 && value[ 1] == 0.0 && value[ 2] == 0.0 && value[ 3] == 0.0 && " +
     "value[ 4] == 0.0 && value[ 5] == 0.0 && value[ 6] == 0.0 && value[ 7] == 0.0 && " +
     "value[ 8] == 0.0 && value[ 9] == 0.0 && value[10] == 0.0 && value[11] == 0.0 && " +
     "value[12] == 0.0 && value[13] == 0.0 && value[14] == 0.0 && value[15] == 0.0",
   setFn: function(gl, loc) { gl.uniformMatrix4fv(loc, false, [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]); }
 },
 { type: 'sampler2D',
   check:
     "vec4 v = texture2D(value, vec2(0, 0));" +
     "return v.x == 1.0 && v.y == 1.0 && v.z == 1.0 && v.w == 1.0",
   valueCheck:
     "return value == 0",
   setFn: function(gl, loc) { gl.uniform1i(loc, 1); }
 },
 { type: 'samplerCube',
   check:
     "vec4 v = textureCube(value, vec3(0, 0, 0));" +
     "return v.x == 1.0 && v.y == 1.0 && v.z == 1.0 && v.w == 1.0",
   valueCheck:
     "return value == 0",
   setFn: function(gl, loc) { gl.uniform1i(loc, 1); }
 },
 ];

 var wtu = WebGLTestUtils;
 var gl = wtu.create3DContext();
 var c = document.getElementById("console");
 var checkFn;

 wtu.setupUnitQuad(gl, [0, 1]);

 // Set unit 0 to a non-0 texture.
 var haveVertexTextureImageUnits =
     gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS) >= 2;
 var tex2D = gl.createTexture();
 var texCube = gl.createTexture();
 gl.bindTexture(gl.TEXTURE_2D, tex2D);
 gl.bindTexture(gl.TEXTURE_CUBE_MAP, texCube);

 var pixel = new Uint8Array([255, 255, 255, 255]);
 var targets = [
   gl.TEXTURE_2D,
   gl.TEXTURE_CUBE_MAP_POSITIVE_X,
   gl.TEXTURE_CUBE_MAP_NEGATIVE_X,
   gl.TEXTURE_CUBE_MAP_POSITIVE_Y,
   gl.TEXTURE_CUBE_MAP_NEGATIVE_Y,
   gl.TEXTURE_CUBE_MAP_POSITIVE_Z,
   gl.TEXTURE_CUBE_MAP_NEGATIVE_Z
 ];
 for (var ii = 0; ii < targets.length; ++ii) {
     gl.texImage2D(
         targets[ii], 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixel);
 }

 var shaderTemplates = [
 { vs: "vshader0", fs: "fshader0", type: 'f' },
 { vs: "vshader1", fs: "fshader1", type: 'v' },
 { vs: "vshader2", fs: "fshader2", type: 'f' },
 { vs: "vshader3", fs: "fshader3", type: 'v' },
 ];

 // Get shader templates
 for (var ii = 0; ii < shaderTemplates.length; ++ii) {
   var template = shaderTemplates[ii];
   template.vs = wtu.getScript(template.vs);
   template.fs = wtu.getScript(template.fs);
 }

 function testType(test) {
   debug("");
   debug("testing: " + test.type);

   for (var ii = 0; ii < shaderTemplates.length; ++ii) {
     var template = shaderTemplates[ii];

     if (test.type.substring(0, 7) == "sampler" &&
         template.type == 'v' &&
         !haveVertexTextureImageUnits) {
       continue;
     }

     var vs = wtu.replaceParams(template.vs, test);
     var fs = wtu.replaceParams(template.fs, test);

     wtu.addShaderSource(c, "vertex shader", vs);
     wtu.addShaderSource(c, "fragment shader", fs);

     var vs = wtu.loadShader(gl, vs, gl.VERTEX_SHADER);
     var fs = wtu.loadShader(gl, fs, gl.FRAGMENT_SHADER);
     var program = wtu.createProgram(gl, vs, fs);

     gl.useProgram(program);

     var loc = gl.getUniformLocation(program, "u_uniform[1]");
     if (!loc) {
         var loc = gl.getUniformLocation(program, "u_uniform");
     }

     var value = gl.getUniform(program, loc);
     TestEval("checkFn = function(value) {" + (test.valueCheck ? test.valueCheck : test.check) + ";}");
     if (checkFn(value)) {
         testPassed("uniform is zero");
     } else {
         testFailed("uniform is not zero");
     }

     debug("default value should be zero");
     wtu.clearAndDrawUnitQuad(gl);
     wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green", 0);

     debug("test test by setting value");
     test.setFn(gl, loc);

     wtu.clearAndDrawUnitQuad(gl);
     wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red", 0);

     debug("re-linking should reset to defaults");
     gl.linkProgram(program);

     wtu.clearAndDrawUnitQuad(gl);
     wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green", 0);

     gl.deleteProgram(program);
     gl.deleteShader(vs);
     gl.deleteShader(fs);

     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no GL errors");
   }
 }

 var testNdx = 0;
 function runNextTest() {
     testType(tests[testNdx++]);
     if (testNdx >= tests.length) {
         finishTest();
     } else {
         setTimeout(runNextTest, 1);
     }
 }

 runNextTest();

 var successfullyParsed = true;

 </script>
 </body>
 </html>
	<!--

	/*
	** Copyright (c) 2012 The Khronos Group Inc.
	**
	** Permission is hereby granted, free of charge, to any person obtaining a
	** copy of this software and/or associated documentation files (the
	** "Materials"), to deal in the Materials without restriction, including
	** without limitation the rights to use, copy, modify, merge, publish,
	** distribute, sublicense, and/or sell copies of the Materials, and to
	** permit persons to whom the Materials are furnished to do so, subject to
	** the following conditions:
	**
	** The above copyright notice and this permission notice shall be included
	** in all copies or substantial portions of the Materials.
	**
	** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
	** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
	*/

	-->

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>WebGL uniform default values</title>
	<link rel="stylesheet" href="../../resources/js-test-style.css"/>
	<script src="../../resources/desktop-gl-constants.js" type="text/javascript"></script>
	<script src="../../resources/js-test-pre.js"></script>
	<script src="../resources/webgl-test.js"></script>
	<script src="../resources/webgl-test-utils.js"></script>
	<script src="../../resources/test-eval.js"></script>
	</head>
	<body>
	<div id="description"></div>
	<div id="console"></div>
	<canvas id="example" width="2" height="2"> </canvas>
	<script id="vshader0" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	void main()
	{
	gl_Position = vPosition;
	}
	</script>
	<script id="fshader0" type="x-shader/x-fragment">
	precision mediump float;
	uniform $(type) u_uniform;

	bool isZero($(type) value) {
	$(check);
	}

	void main()
	{
	gl_FragColor = isZero(u_uniform) ? vec4(0,1,0,1) : vec4(1,0,0,1);
	}
	</script>
	<script id="vshader1" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	varying vec4 v_color;
	uniform $(type) u_uniform;

	bool isZero($(type) value) {
	$(check);
	}

	void main()
	{
	gl_Position = vPosition;
	v_color = isZero(u_uniform) ? vec4(0,1,0,1) : vec4(1,0,0,1);
	}
	</script>
	<script id="fshader1" type="x-shader/x-fragment">
	precision mediump float;
	varying vec4 v_color;
	void main()
	{
	gl_FragColor = v_color;
	}
	</script>
	<script id="vshader2" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	void main()
	{
	gl_Position = vPosition;
	}
	</script>
	<script id="fshader2" type="x-shader/x-fragment">
	precision mediump float;
	uniform $(type) u_uniform[2];

	bool isZero($(type) value) {
	$(check);
	}

	void main()
	{
	gl_FragColor = isZero(u_uniform[1]) ? vec4(0,1,0,1) : vec4(1,0,0,1);
	}
	</script>
	<script id="vshader3" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	varying vec4 v_color;
	uniform $(type) u_uniform[2];

	bool isZero($(type) value) {
	$(check);
	}

	void main()
	{
	gl_Position = vPosition;
	v_color = isZero(u_uniform[1]) ? vec4(0,1,0,1) : vec4(1,0,0,1);
	}
	</script>
	<script id="fshader3" type="x-shader/x-fragment">
	precision mediump float;
	varying vec4 v_color;
	void main()
	{
	gl_FragColor = v_color;
	}
	</script>
	<script>
	"use strict";
	description();

	var tests = [
	{ type: 'float',
	check: "return value == 0.0",
	setFn: function(gl, loc) { gl.uniform1f(loc, 3.0); }
	},
	{ type: 'int',
	check: "return value == 0",
	setFn: function(gl, loc) { gl.uniform1i(loc, 3.0); }
	},
	{ type: 'bool',
	check: "return value == false",
	setFn: function(gl, loc) { gl.uniform1i(loc, 1); }
	},
	{ type: 'vec2',
	check: "return value[0] == 0.0 && value[1] == 0.0",
	setFn: function(gl, loc) { gl.uniform2f(loc, 3.0, 3.0); }
	},
	{ type: 'vec3',
	check: "return value[0] == 0.0 && value[1] == 0.0 && value[2] == 0.0",
	setFn: function(gl, loc) { gl.uniform3f(loc, 3.0, 3.0, 3.0); }
	},
	{ type: 'vec4',
	check: "return value[0] == 0.0 && value[1] == 0.0 && value[2] == 0.0 && value[3] == 0.0",
	setFn: function(gl, loc) { gl.uniform4f(loc, 3.0, 3.0, 3.0, 3.0); }
	},
	{ type: 'ivec2',
	check: "return value[0] == 0 && value[1] == 0",
	setFn: function(gl, loc) { gl.uniform2i(loc, 3, 3); }
	},
	{ type: 'ivec3',
	check: "return value[0] == 0 && value[1] == 0 && value[2] == 0",
	setFn: function(gl, loc) { gl.uniform3i(loc, 3, 3, 3); }
	},
	{ type: 'ivec4',
	check: "return value[0] == 0 && value[1] == 0 && value[2] == 0 && value[3] == 0",
	setFn: function(gl, loc) { gl.uniform4i(loc, 3, 3, 3, 3); }
	},
	{ type: 'bvec2',
	check: "return value[0] == false && value[1] == false",
	setFn: function(gl, loc) { gl.uniform2i(loc, 1, 1); }
	},
	{ type: 'bvec3',
	check: "return value[0] == false && value[1] == false && value[2] == false",
	setFn: function(gl, loc) { gl.uniform3i(loc, 1, 1, 1); }
	},
	{ type: 'bvec4',
	check: "return value[0] == false && value[1] == false && value[2] == false && value[3] == false",
	setFn: function(gl, loc) { gl.uniform4i(loc, 1, 1, 1, 1); }
	},
	{ type: 'mat2',
	check:
	"return " +
	"value[0][0] == 0.0 && value[0][1] == 0.0 && " +
	"value[1][0] == 0.0 && value[1][0] == 0.0",
	valueCheck:
	"return " +
	"value[0] == 0.0 && value[1] == 0.0 && " +
	"value[2] == 0.0 && value[3] == 0.0",
	setFn: function(gl, loc) { gl.uniformMatrix2fv(loc, false, [1, 1, 1, 1]); }
	},
	{ type: 'mat3',
	check:
	"return " +
	"value[0][0] == 0.0 && value[1][0] == 0.0 && value[2][0] == 0.0 && " +
	"value[0][1] == 0.0 && value[1][1] == 0.0 && value[2][1] == 0.0 && " +
	"value[0][2] == 0.0 && value[1][2] == 0.0 && value[2][2] == 0.0",
	valueCheck:
	"return " +
	"value[0] == 0.0 && value[1] == 0.0 && value[2] == 0.0 && " +
	"value[3] == 0.0 && value[4] == 0.0 && value[5] == 0.0 && " +
	"value[6] == 0.0 && value[7] == 0.0 && value[8] == 0.0",
	setFn: function(gl, loc) { gl.uniformMatrix3fv(loc, false, [1, 1, 1, 1, 1, 1, 1, 1, 1]); }
	},
	{ type: 'mat4',
	check:
	"return " +
	"value[0][0] == 0.0 && value[1][0] == 0.0 && value[2][0] == 0.0 && value[3][0] == 0.0 && " +
	"value[0][1] == 0.0 && value[1][1] == 0.0 && value[2][1] == 0.0 && value[3][1] == 0.0 && " +
	"value[0][2] == 0.0 && value[1][2] == 0.0 && value[2][2] == 0.0 && value[3][2] == 0.0 && " +
	"value[0][3] == 0.0 && value[1][3] == 0.0 && value[2][3] == 0.0 && value[3][3] == 0.0",
	valueCheck:
	"return " +
	"value[ 0] == 0.0 && value[ 1] == 0.0 && value[ 2] == 0.0 && value[ 3] == 0.0 && " +
	"value[ 4] == 0.0 && value[ 5] == 0.0 && value[ 6] == 0.0 && value[ 7] == 0.0 && " +
	"value[ 8] == 0.0 && value[ 9] == 0.0 && value[10] == 0.0 && value[11] == 0.0 && " +
	"value[12] == 0.0 && value[13] == 0.0 && value[14] == 0.0 && value[15] == 0.0",
	setFn: function(gl, loc) { gl.uniformMatrix4fv(loc, false, [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]); }
	},
	{ type: 'sampler2D',
	check:
	"vec4 v = texture2D(value, vec2(0, 0));" +
	"return v.x == 1.0 && v.y == 1.0 && v.z == 1.0 && v.w == 1.0",
	valueCheck:
	"return value == 0",
	setFn: function(gl, loc) { gl.uniform1i(loc, 1); }
	},
	{ type: 'samplerCube',
	check:
	"vec4 v = textureCube(value, vec3(0, 0, 0));" +
	"return v.x == 1.0 && v.y == 1.0 && v.z == 1.0 && v.w == 1.0",
	valueCheck:
	"return value == 0",
	setFn: function(gl, loc) { gl.uniform1i(loc, 1); }
	},
	];

	var wtu = WebGLTestUtils;
	var gl = wtu.create3DContext();
	var c = document.getElementById("console");
	var checkFn;

	wtu.setupUnitQuad(gl, [0, 1]);

	// Set unit 0 to a non-0 texture.
	var haveVertexTextureImageUnits =
	gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS) >= 2;
	var tex2D = gl.createTexture();
	var texCube = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_2D, tex2D);
	gl.bindTexture(gl.TEXTURE_CUBE_MAP, texCube);

	var pixel = new Uint8Array([255, 255, 255, 255]);
	var targets = [
	gl.TEXTURE_2D,
	gl.TEXTURE_CUBE_MAP_POSITIVE_X,
	gl.TEXTURE_CUBE_MAP_NEGATIVE_X,
	gl.TEXTURE_CUBE_MAP_POSITIVE_Y,
	gl.TEXTURE_CUBE_MAP_NEGATIVE_Y,
	gl.TEXTURE_CUBE_MAP_POSITIVE_Z,
	gl.TEXTURE_CUBE_MAP_NEGATIVE_Z
	];
	for (var ii = 0; ii < targets.length; ++ii) {
	gl.texImage2D(
	targets[ii], 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixel);
	}

	var shaderTemplates = [
	{ vs: "vshader0", fs: "fshader0", type: 'f' },
	{ vs: "vshader1", fs: "fshader1", type: 'v' },
	{ vs: "vshader2", fs: "fshader2", type: 'f' },
	{ vs: "vshader3", fs: "fshader3", type: 'v' },
	];

	// Get shader templates
	for (var ii = 0; ii < shaderTemplates.length; ++ii) {
	var template = shaderTemplates[ii];
	template.vs = wtu.getScript(template.vs);
	template.fs = wtu.getScript(template.fs);
	}

	function testType(test) {
	debug("");
	debug("testing: " + test.type);

	for (var ii = 0; ii < shaderTemplates.length; ++ii) {
	var template = shaderTemplates[ii];

	if (test.type.substring(0, 7) == "sampler" &&
	template.type == 'v' &&
	!haveVertexTextureImageUnits) {
	continue;
	}

	var vs = wtu.replaceParams(template.vs, test);
	var fs = wtu.replaceParams(template.fs, test);

	wtu.addShaderSource(c, "vertex shader", vs);
	wtu.addShaderSource(c, "fragment shader", fs);

	var vs = wtu.loadShader(gl, vs, gl.VERTEX_SHADER);
	var fs = wtu.loadShader(gl, fs, gl.FRAGMENT_SHADER);
	var program = wtu.createProgram(gl, vs, fs);

	gl.useProgram(program);

	var loc = gl.getUniformLocation(program, "u_uniform[1]");
	if (!loc) {
	var loc = gl.getUniformLocation(program, "u_uniform");
	}

	var value = gl.getUniform(program, loc);
	TestEval("checkFn = function(value) {" + (test.valueCheck ? test.valueCheck : test.check) + ";}");
	if (checkFn(value)) {
	testPassed("uniform is zero");
	} else {
	testFailed("uniform is not zero");
	}

	debug("default value should be zero");
	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green", 0);

	debug("test test by setting value");
	test.setFn(gl, loc);

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red", 0);

	debug("re-linking should reset to defaults");
	gl.linkProgram(program);

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green", 0);

	gl.deleteProgram(program);
	gl.deleteShader(vs);
	gl.deleteShader(fs);

	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no GL errors");
	}
	}

	var testNdx = 0;
	function runNextTest() {
	testType(tests[testNdx++]);
	if (testNdx >= tests.length) {
	finishTest();
	} else {
	setTimeout(runNextTest, 1);
	}
	}

	runNextTest();

	var successfullyParsed = true;

	</script>
	</body>
	</html>