LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance/extensions/ext-blend-minmax.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2014 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 EXT_blend_minmax Conformance Tests</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>
 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
 <div id="console"></div>
 <!-- Shaders to test output -->
 <script id="outputVertexShader" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 void main() {
     gl_Position = vPosition;
 }
 </script>
 <script id="outputFragmentShader" type="x-shader/x-fragment">
 precision mediump float;
 uniform vec4 uColor;
 void main() {
     gl_FragColor = uColor;
 }
 </script>

 <script>
 "use strict";
 description("This test verifies the functionality of the EXT_blend_minmax extension, if it is available.");

 debug("");

 var wtu = WebGLTestUtils;
 var canvas = document.getElementById("canvas");
 var gl = wtu.create3DContext(canvas);
 var ext = null;

 // Use the constant directly when we don't have the extension
 var MIN_EXT = 0x8007;
 var MAX_EXT = 0x8008;

 if (!gl) {
     testFailed("WebGL context does not exist");
 } else {
     testPassed("WebGL context exists");

     runBlendTestDisabled();

     // Query the extension and store globally so shouldBe can access it
     ext = wtu.getExtensionWithKnownPrefixes(gl, "EXT_blend_minmax");
     if (!ext) {
         testPassed("No EXT_blend_minmax support -- this is legal");

         runSupportedTest(false);
     } else {
         debug("");
         testPassed("Successfully enabled EXT_blend_minmax extension");

         runSupportedTest(true);

         runBlendTestEnabled();
         runOutputTests();
         runUniqueObjectTest();
     }
 }

 function runSupportedTest(extensionEnabled) {
     var supported = gl.getSupportedExtensions();
     if (supported.indexOf("EXT_blend_minmax") >= 0) {
         if (extensionEnabled) {
             testPassed("EXT_blend_minmax listed as supported and getExtension succeeded");
         } else {
             testFailed("EXT_blend_minmax listed as supported but getExtension failed");
         }
     } else {
         if (extensionEnabled) {
             testFailed("EXT_blend_minmax not listed as supported but getExtension succeeded");
         } else {
             testPassed("EXT_blend_minmax not listed as supported and getExtension failed -- this is legal");
         }
     }
 }

 function runBlendTestDisabled() {
     debug("");
     debug("Testing blending enums with extension disabled");

     // Set the blend equation to a known-good enum first
     gl.blendEquation(gl.FUNC_ADD);

     wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquation(MIN_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "gl.FUNC_ADD");

     wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquation(MAX_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "gl.FUNC_ADD");

     wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(MIN_EXT, gl.FUNC_ADD)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");

     wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(gl.FUNC_ADD, MIN_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");

     wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(MAX_EXT, gl.FUNC_ADD)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");

     wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(gl.FUNC_ADD, MAX_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");
 }

 function runBlendTestEnabled() {
     debug("");
     debug("Testing blending enums with extension enabled");

     shouldBe("ext.MIN_EXT", "0x8007");
     shouldBe("ext.MAX_EXT", "0x8008");

     wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquation(ext.MIN_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "ext.MIN_EXT");

     wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquation(ext.MAX_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "ext.MAX_EXT");

     wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(ext.MIN_EXT, gl.FUNC_ADD)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "ext.MIN_EXT");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");

     wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(gl.FUNC_ADD, ext.MIN_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "ext.MIN_EXT");

     wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(ext.MAX_EXT, gl.FUNC_ADD)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "ext.MAX_EXT");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");

     wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(gl.FUNC_ADD, ext.MAX_EXT)");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");
     shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "ext.MAX_EXT");
 }

 function runOutputTests() {
     var e = 2; // Amount of variance to allow in result pixels - may need to be tweaked higher

     debug("");
     debug("Testing various draws for valid blending behavior");

     canvas.width = 50; canvas.height = 50;
     gl.viewport(0, 0, canvas.width, canvas.height);
     gl.enable(gl.BLEND);
     gl.blendFunc(gl.ONE, gl.ONE);

     var program = wtu.setupProgram(gl, ["outputVertexShader", "outputFragmentShader"], ['vPosition'], [0]);
     var quadParameters = wtu.setupUnitQuad(gl, 0, 1);
     var colorUniform = gl.getUniformLocation(program, "uColor");


     // Draw 1
     gl.blendEquation(ext.MIN_EXT);

     gl.clearColor(0.2, 0.4, 0.6, 0.8);
     gl.clear(gl.COLOR_BUFFER_BIT);

     gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
     wtu.drawUnitQuad(gl);

     wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [51, 102, 102, 51]);

     // Draw 2:
     gl.blendEquation(ext.MAX_EXT);

     gl.clearColor(0.2, 0.4, 0.6, 0.8);
     gl.clear(gl.COLOR_BUFFER_BIT);

     gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
     wtu.drawUnitQuad(gl);

     wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [204, 153, 153, 204]);

     // Draw 3
     gl.blendEquationSeparate(ext.MIN_EXT, ext.MAX_EXT);

     gl.clearColor(0.2, 0.4, 0.6, 0.8);
     gl.clear(gl.COLOR_BUFFER_BIT);

     gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
     wtu.drawUnitQuad(gl);

     wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [51, 102, 102, 204]);

     // Draw 4
     gl.blendEquationSeparate(ext.MAX_EXT, ext.MIN_EXT);

     gl.clearColor(0.2, 0.4, 0.6, 0.8);
     gl.clear(gl.COLOR_BUFFER_BIT);

     gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
     wtu.drawUnitQuad(gl);

     wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [204, 153, 153, 51]);
 }

 function runUniqueObjectTest()
 {
     debug("");
     debug("Testing that getExtension() returns the same object each time");
     ext = null;
     gl.getExtension("EXT_blend_minmax").myProperty = 2;
     webglHarnessCollectGarbage();
     shouldBe('gl.getExtension("EXT_blend_minmax").myProperty', '2');
 }

 debug("");
 var successfullyParsed = true;
 </script>
 <script src="../../js/js-test-post.js"></script>

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

	/*
	** Copyright (c) 2014 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 EXT_blend_minmax Conformance Tests</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>
	<canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
	<div id="console"></div>
	<!-- Shaders to test output -->
	<script id="outputVertexShader" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	void main() {
	gl_Position = vPosition;
	}
	</script>
	<script id="outputFragmentShader" type="x-shader/x-fragment">
	precision mediump float;
	uniform vec4 uColor;
	void main() {
	gl_FragColor = uColor;
	}
	</script>

	<script>
	"use strict";
	description("This test verifies the functionality of the EXT_blend_minmax extension, if it is available.");

	debug("");

	var wtu = WebGLTestUtils;
	var canvas = document.getElementById("canvas");
	var gl = wtu.create3DContext(canvas);
	var ext = null;

	// Use the constant directly when we don't have the extension
	var MIN_EXT = 0x8007;
	var MAX_EXT = 0x8008;

	if (!gl) {
	testFailed("WebGL context does not exist");
	} else {
	testPassed("WebGL context exists");

	runBlendTestDisabled();

	// Query the extension and store globally so shouldBe can access it
	ext = wtu.getExtensionWithKnownPrefixes(gl, "EXT_blend_minmax");
	if (!ext) {
	testPassed("No EXT_blend_minmax support -- this is legal");

	runSupportedTest(false);
	} else {
	debug("");
	testPassed("Successfully enabled EXT_blend_minmax extension");

	runSupportedTest(true);

	runBlendTestEnabled();
	runOutputTests();
	runUniqueObjectTest();
	}
	}

	function runSupportedTest(extensionEnabled) {
	var supported = gl.getSupportedExtensions();
	if (supported.indexOf("EXT_blend_minmax") >= 0) {
	if (extensionEnabled) {
	testPassed("EXT_blend_minmax listed as supported and getExtension succeeded");
	} else {
	testFailed("EXT_blend_minmax listed as supported but getExtension failed");
	}
	} else {
	if (extensionEnabled) {
	testFailed("EXT_blend_minmax not listed as supported but getExtension succeeded");
	} else {
	testPassed("EXT_blend_minmax not listed as supported and getExtension failed -- this is legal");
	}
	}
	}

	function runBlendTestDisabled() {
	debug("");
	debug("Testing blending enums with extension disabled");

	// Set the blend equation to a known-good enum first
	gl.blendEquation(gl.FUNC_ADD);

	wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquation(MIN_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "gl.FUNC_ADD");

	wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquation(MAX_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "gl.FUNC_ADD");

	wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(MIN_EXT, gl.FUNC_ADD)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");

	wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(gl.FUNC_ADD, MIN_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");

	wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(MAX_EXT, gl.FUNC_ADD)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");

	wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, "gl.blendEquationSeparate(gl.FUNC_ADD, MAX_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");
	}

	function runBlendTestEnabled() {
	debug("");
	debug("Testing blending enums with extension enabled");

	shouldBe("ext.MIN_EXT", "0x8007");
	shouldBe("ext.MAX_EXT", "0x8008");

	wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquation(ext.MIN_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "ext.MIN_EXT");

	wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquation(ext.MAX_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION)", "ext.MAX_EXT");

	wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(ext.MIN_EXT, gl.FUNC_ADD)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "ext.MIN_EXT");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");

	wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(gl.FUNC_ADD, ext.MIN_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "ext.MIN_EXT");

	wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(ext.MAX_EXT, gl.FUNC_ADD)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "ext.MAX_EXT");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "gl.FUNC_ADD");

	wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendEquationSeparate(gl.FUNC_ADD, ext.MAX_EXT)");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_RGB)", "gl.FUNC_ADD");
	shouldBe("gl.getParameter(gl.BLEND_EQUATION_ALPHA)", "ext.MAX_EXT");
	}

	function runOutputTests() {
	var e = 2; // Amount of variance to allow in result pixels - may need to be tweaked higher

	debug("");
	debug("Testing various draws for valid blending behavior");

	canvas.width = 50; canvas.height = 50;
	gl.viewport(0, 0, canvas.width, canvas.height);
	gl.enable(gl.BLEND);
	gl.blendFunc(gl.ONE, gl.ONE);

	var program = wtu.setupProgram(gl, ["outputVertexShader", "outputFragmentShader"], ['vPosition'], [0]);
	var quadParameters = wtu.setupUnitQuad(gl, 0, 1);
	var colorUniform = gl.getUniformLocation(program, "uColor");


	// Draw 1
	gl.blendEquation(ext.MIN_EXT);

	gl.clearColor(0.2, 0.4, 0.6, 0.8);
	gl.clear(gl.COLOR_BUFFER_BIT);

	gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
	wtu.drawUnitQuad(gl);

	wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [51, 102, 102, 51]);

	// Draw 2:
	gl.blendEquation(ext.MAX_EXT);

	gl.clearColor(0.2, 0.4, 0.6, 0.8);
	gl.clear(gl.COLOR_BUFFER_BIT);

	gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
	wtu.drawUnitQuad(gl);

	wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [204, 153, 153, 204]);

	// Draw 3
	gl.blendEquationSeparate(ext.MIN_EXT, ext.MAX_EXT);

	gl.clearColor(0.2, 0.4, 0.6, 0.8);
	gl.clear(gl.COLOR_BUFFER_BIT);

	gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
	wtu.drawUnitQuad(gl);

	wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [51, 102, 102, 204]);

	// Draw 4
	gl.blendEquationSeparate(ext.MAX_EXT, ext.MIN_EXT);

	gl.clearColor(0.2, 0.4, 0.6, 0.8);
	gl.clear(gl.COLOR_BUFFER_BIT);

	gl.uniform4f(colorUniform, 0.8, 0.6, 0.4, 0.2);
	wtu.drawUnitQuad(gl);

	wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [204, 153, 153, 51]);
	}

	function runUniqueObjectTest()
	{
	debug("");
	debug("Testing that getExtension() returns the same object each time");
	ext = null;
	gl.getExtension("EXT_blend_minmax").myProperty = 2;
	webglHarnessCollectGarbage();
	shouldBe('gl.getExtension("EXT_blend_minmax").myProperty', '2');
	}

	debug("");
	var successfullyParsed = true;
	</script>
	<script src="../../js/js-test-post.js"></script>

	</body>
	</html>