LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance/attribs/gl-matrix-attributes.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">
 <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>
 <title>WebGL Matrix Attribute Conformance Test</title>
 </head>
 <body>
 <div id="description"></div>
 <div id="console"></div>
 <canvas id="canvas" width="8" height="8" style="width: 8px; height: 8px;"></canvas>
 <script>
 "use strict";
 description("This tests ensures that matrix attribute locations do not clash with other shader attributes.");

 var wtu = WebGLTestUtils;
 var canvas = document.getElementById("canvas");
 var gl = wtu.create3DContext(canvas, {antialias: false});

 // Make sure we have room for at least a mat4.
 var maxAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
 debug('MAX_VERTEX_ATTRIBUTES is ' + maxAttributes);
 shouldBeGreaterThanOrEqual('maxAttributes', '4');

 var glFragmentShader = wtu.loadShader(gl, wtu.simpleColorFragmentShader, gl.FRAGMENT_SHADER);

 // prepareMatrixProgram creates a program with glFragmentShader as the fragment shader.
 // The vertex shader has numVector number of vectors and a matrix with numMatrixDimensions
 // dimensions at location numMatrixPosition in the list of attributes.
 // Ensures that every vector and matrix is used by the program.
 // Returns a valid program on successfull link; null on link failure.
 function prepareMatrixProgram(numVectors, numMatrixDimensions, numMatrixPosition) {
     // Add the matrix and vector attribute declarations. Declare the vectors
     // to have the same number of components as the matrix so we can perform
     // operations on them when we assign to gl_Position later on.
     var strVertexShader = "";
     for (var ii = 1; ii <= numVectors; ++ii) {
         if (numMatrixPosition === ii) {
             strVertexShader += "attribute mat" + numMatrixDimensions + " matrix;\n";
         }
         strVertexShader += "attribute vec" + numMatrixDimensions + " vec_" + ii + ";\n";
     }
     // numMatrixPosition will be one past numVectors if the caller wants it to be
     // last. Hence, we need this check outside the loop as well as inside.
     if (numMatrixPosition === ii) {
         strVertexShader += "attribute mat" + numMatrixDimensions + " matrix;\n";
     }
     // Add the body of the shader. Add up all of the vectors and multiply by the matrix.
     // The operations we perform do not matter. We just need to ensure that all the vector and
     // matrix attributes are used.
     strVertexShader +=  "void main(void) { \ngl_Position = vec4((";
     for (var ii = 1; ii <= numVectors; ++ii) {
         if (ii > 1) {
             strVertexShader += "+"
         }
         strVertexShader += "vec_" + ii;
     }
     strVertexShader += ")*matrix";
     // Ensure the vec4 has the correct number of dimensions in order to be assignable
     // to gl_Position.
     for (var ii = numMatrixDimensions; ii < 4; ++ii) {
         strVertexShader += ",0.0";
     }
     strVertexShader += ");}\n";
     // Load the shader, attach it to a program, and return the link results
     var glVertexShader = wtu.loadShader(gl, strVertexShader, gl.VERTEX_SHADER);
     var strTest = 'Load shader with ' + numVectors + ' vectors and 1 matrix';
     if (glVertexShader !== null) {
         testPassed(strTest);

         var glProgram = gl.createProgram();
         gl.attachShader(glProgram, glVertexShader);
         gl.attachShader(glProgram, glFragmentShader);
         gl.linkProgram(glProgram);
         if (gl.getProgramParameter(glProgram, gl.LINK_STATUS)) {
             wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'linkProgram');
             return glProgram;
         }
     } else {
         testFailed(strTest);
     }
     return null;
 }

 debug('');

 // Test mat2, mat3 and mat4.
 for (var mm = 2; mm <= 4; ++mm) {
     // Add maxAttribute number of attributes by saving enough room in the attribute
     // list for a matrix of mm dimensions. All of the other attribute slots will be
     // filled with vectors.
     var numVectors = maxAttributes - mm;
     for (var pp = 1; pp <= numVectors + 1; ++pp) {
         debug('Test ' + mm + ' dimensional matrix at position ' + pp);
         var glProgram = prepareMatrixProgram(numVectors, /*numMatrixDimensions*/mm, /*numMatrixPosition*/pp);
         shouldBeNonNull('glProgram');
         var attribMatrix = gl.getAttribLocation(glProgram, 'matrix');
         debug('Matrix is at attribute location ' + attribMatrix);
         shouldBeTrue('attribMatrix > -1');
         // Per the spec, when an attribute is a matrix attribute, getAttribLocation
         // returns the index of the first component of the matrix. The implementation must
         // leave sufficient room for all the components. Here we ensure none of the vectors
         // in the shader are assigned attribute locations that belong to the matrix.
         for (var vv = 1; vv <= numVectors; ++vv) {
             var strVector = 'vec_' + vv
             var attribVector = gl.getAttribLocation(glProgram, strVector);
             debug(strVector + ' is at attribute location ' + attribVector);
             // Begin with the first attribute location where the matrix begins and ensure
             // the vector's attribute location is not assigned to the matrix. Loop until
             // we've checked all of the attribute locations that belong to the matrix.
             for (var ii = attribMatrix; ii < attribMatrix + mm; ++ii) {
                 var testStr = strVector + ' attribute location: ' + attribVector + '.  Should not be ' + ii;
                 if (attribVector !== ii) {
                     testPassed(testStr);
                 } else {
                     testFailed(testStr);
                 }
             }
         }
         debug('');
     }
     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">
	<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>
	<title>WebGL Matrix Attribute Conformance Test</title>
	</head>
	<body>
	<div id="description"></div>
	<div id="console"></div>
	<canvas id="canvas" width="8" height="8" style="width: 8px; height: 8px;"></canvas>
	<script>
	"use strict";
	description("This tests ensures that matrix attribute locations do not clash with other shader attributes.");

	var wtu = WebGLTestUtils;
	var canvas = document.getElementById("canvas");
	var gl = wtu.create3DContext(canvas, {antialias: false});

	// Make sure we have room for at least a mat4.
	var maxAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
	debug('MAX_VERTEX_ATTRIBUTES is ' + maxAttributes);
	shouldBeGreaterThanOrEqual('maxAttributes', '4');

	var glFragmentShader = wtu.loadShader(gl, wtu.simpleColorFragmentShader, gl.FRAGMENT_SHADER);

	// prepareMatrixProgram creates a program with glFragmentShader as the fragment shader.
	// The vertex shader has numVector number of vectors and a matrix with numMatrixDimensions
	// dimensions at location numMatrixPosition in the list of attributes.
	// Ensures that every vector and matrix is used by the program.
	// Returns a valid program on successfull link; null on link failure.
	function prepareMatrixProgram(numVectors, numMatrixDimensions, numMatrixPosition) {
	// Add the matrix and vector attribute declarations. Declare the vectors
	// to have the same number of components as the matrix so we can perform
	// operations on them when we assign to gl_Position later on.
	var strVertexShader = "";
	for (var ii = 1; ii <= numVectors; ++ii) {
	if (numMatrixPosition === ii) {
	strVertexShader += "attribute mat" + numMatrixDimensions + " matrix;\n";
	}
	strVertexShader += "attribute vec" + numMatrixDimensions + " vec_" + ii + ";\n";
	}
	// numMatrixPosition will be one past numVectors if the caller wants it to be
	// last. Hence, we need this check outside the loop as well as inside.
	if (numMatrixPosition === ii) {
	strVertexShader += "attribute mat" + numMatrixDimensions + " matrix;\n";
	}
	// Add the body of the shader. Add up all of the vectors and multiply by the matrix.
	// The operations we perform do not matter. We just need to ensure that all the vector and
	// matrix attributes are used.
	strVertexShader += "void main(void) { \ngl_Position = vec4((";
	for (var ii = 1; ii <= numVectors; ++ii) {
	if (ii > 1) {
	strVertexShader += "+"
	}
	strVertexShader += "vec_" + ii;
	}
	strVertexShader += ")*matrix";
	// Ensure the vec4 has the correct number of dimensions in order to be assignable
	// to gl_Position.
	for (var ii = numMatrixDimensions; ii < 4; ++ii) {
	strVertexShader += ",0.0";
	}
	strVertexShader += ");}\n";
	// Load the shader, attach it to a program, and return the link results
	var glVertexShader = wtu.loadShader(gl, strVertexShader, gl.VERTEX_SHADER);
	var strTest = 'Load shader with ' + numVectors + ' vectors and 1 matrix';
	if (glVertexShader !== null) {
	testPassed(strTest);

	var glProgram = gl.createProgram();
	gl.attachShader(glProgram, glVertexShader);
	gl.attachShader(glProgram, glFragmentShader);
	gl.linkProgram(glProgram);
	if (gl.getProgramParameter(glProgram, gl.LINK_STATUS)) {
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'linkProgram');
	return glProgram;
	}
	} else {
	testFailed(strTest);
	}
	return null;
	}

	debug('');

	// Test mat2, mat3 and mat4.
	for (var mm = 2; mm <= 4; ++mm) {
	// Add maxAttribute number of attributes by saving enough room in the attribute
	// list for a matrix of mm dimensions. All of the other attribute slots will be
	// filled with vectors.
	var numVectors = maxAttributes - mm;
	for (var pp = 1; pp <= numVectors + 1; ++pp) {
	debug('Test ' + mm + ' dimensional matrix at position ' + pp);
	var glProgram = prepareMatrixProgram(numVectors, /numMatrixDimensions/mm, /numMatrixPosition/pp);
	shouldBeNonNull('glProgram');
	var attribMatrix = gl.getAttribLocation(glProgram, 'matrix');
	debug('Matrix is at attribute location ' + attribMatrix);
	shouldBeTrue('attribMatrix > -1');
	// Per the spec, when an attribute is a matrix attribute, getAttribLocation
	// returns the index of the first component of the matrix. The implementation must
	// leave sufficient room for all the components. Here we ensure none of the vectors
	// in the shader are assigned attribute locations that belong to the matrix.
	for (var vv = 1; vv <= numVectors; ++vv) {
	var strVector = 'vec_' + vv
	var attribVector = gl.getAttribLocation(glProgram, strVector);
	debug(strVector + ' is at attribute location ' + attribVector);
	// Begin with the first attribute location where the matrix begins and ensure
	// the vector's attribute location is not assigned to the matrix. Loop until
	// we've checked all of the attribute locations that belong to the matrix.
	for (var ii = attribMatrix; ii < attribMatrix + mm; ++ii) {
	var testStr = strVector + ' attribute location: ' + attribVector + '. Should not be ' + ii;
	if (attribVector !== ii) {
	testPassed(testStr);
	} else {
	testFailed(testStr);
	}
	}
	}
	debug('');
	}
	debug('');
	}

	var successfullyParsed = true;
	</script>
	<script src="../../js/js-test-post.js"></script>
	</body>
	</html>