LayoutTests/http/tests/webgl/1.0.2/resources/webgl_test_files/conformance/textures/texture-attachment-formats.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 Texture Attachment Format Conformance Tests</title>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test.js"></script>
 <script src="../resources/webgl-test-utils.js"></script>
 </head>
 <body>
 <div id="description"></div>
 <div id="console"></div>
 <canvas id="canvas" width="2" height="2" style="width: 100px; height:100px; border: 1px solid black;"> </canvas>
 <script>
 "use strict";
 description();

 var wtu = WebGLTestUtils;
 var gl = wtu.create3DContext("canvas");
 if (!gl) {
   testFailed("context does not exist");
 } else {
   testPassed("context exists");

   debug("");
   debug("Checking texture formats.");

   var numValidFormats = 0;
   var clearColor = [0.25, 0.5, 0.75, 0.25];

   var floatToBits = function(value, bits) {
     var range = (1 << bits) - 1;
     var result = 0;
     if (range > 0) {
       result = Math.floor(Math.floor(value * range) * 255 / range);
     }

     //debug("v = " + value + ", bits = " + bits + ", range = " + range  + ", result = " + result);
     return result;
   }

   var testFormat = function(info) {
     debug("");
     debug("testing: " + info.format + ", " + info.type);

     var format = gl[info.format];
     var type = gl[info.type];

     gl.texImage2D(gl.TEXTURE_2D,
                   0,                 // level
                   format,            // internalFormat
                   16,                // width
                   16,                // height
                   0,                 // border
                   format,            // format
                   type,              // type
                   null);             // data
     var fbStatus = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
     debug(wtu.glEnumToString(gl, fbStatus));
     if (fbStatus != gl.FRAMEBUFFER_COMPLETE) {
       debug("format unsupported");
       if (info.mustBeFramebufferComplete) {
         testFailed(info.format + " must be FRAMEBUFFER_COMPLETE");
       }
       return;
     }

     ++numValidFormats;

     var startExpected = [0, 0, 0, info.channels[3] < 0 ? 255 : 0];

     var expected = [];
     var tolerance = [];
     for (var ii = 0; ii < 4; ++ii) {
       var color = 0;
       var channel = info.channels[ii];
       if (channel < 0) {
         color = ii < 3 ? 0 : 255
       } else {
         color = floatToBits(clearColor[channel], info.bits[ii]);
       }
       expected.push(color);
       tolerance.push(channel < 0 ? 0 : (1 + (1 << (8 - info.bits[ii]))));
     }

     wtu.checkCanvas(gl, startExpected, "should be " + startExpected);
     gl.clear(gl.COLOR_BUFFER_BIT);
     wtu.checkCanvas(gl, expected, "should be " + expected + " with tolerance " + tolerance, tolerance);
   }

   var validFormats = [
     { format: 'RGBA',
       type:  'UNSIGNED_BYTE',
       channels: [0, 1, 2, 3],
       bits: [8, 8, 8, 8],
       mustBeFramebufferComplete: true
     },
     { format: 'ALPHA',
       type:  'UNSIGNED_BYTE',
       channels: [-1, -1, -1, 3],
       bits: [0, 0, 0, 8],
       mustBeFramebufferComplete: false
     },
     { format: 'RGB',
       type:  'UNSIGNED_BYTE',
       channels: [0, 1, 2, -1],
       bits: [8, 8, 8, 0],
       mustBeFramebufferComplete: false
     },
     { format: 'RGB',
       type:  'UNSIGNED_SHORT_5_6_5',
       channels: [0, 1, 2, -1],
       bits: [5, 6, 5, 0],
       mustBeFramebufferComplete: false
     },
     { format: 'RGBA',
       type:  'UNSIGNED_SHORT_5_5_5_1',
       channels: [0, 1, 2, 3],
       bits: [5, 5, 5, 1],
       mustBeFramebufferComplete: false
     },
     { format: 'RGBA',
       type:  'UNSIGNED_SHORT_4_4_4_4',
       channels: [0, 1, 2, 3],
       bits: [4, 4, 4, 4],
       mustBeFramebufferComplete: false
     },
     { format: 'LUMINANCE',
       type:  'UNSIGNED_BYTE',
       channels: [0, 0, 0, -1],
       bits: [8, 8, 8, -1],
       mustBeFramebufferComplete: false
     },
     { format: 'LUMINANCE_ALPHA',
       type:  'UNSIGNED_BYTE',
       channels: [0, 0, 0, 3],
       bits: [8, 8, 8, 8],
       mustBeFramebufferComplete: false
     }
   ];

   gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
   var fbo = gl.createFramebuffer();
   gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
   var tex = gl.createTexture();
   gl.bindTexture(gl.TEXTURE_2D, tex);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
   gl.framebufferTexture2D(
       gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);

   for (var ii = 0; ii < validFormats.length; ++ii) {
     var info = validFormats[ii];
     testFormat(info);
   }

   debug("");
   shouldBeTrue("numValidFormats > 0");
   glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
 }

 debug("");
 var successfullyParsed = true;

 </script>
 <script src="../../resources/js-test-post.js"></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 Texture Attachment Format Conformance Tests</title>
	<link rel="stylesheet" href="../../resources/js-test-style.css"/>
	<script src="../../resources/js-test-pre.js"></script>
	<script src="../resources/webgl-test.js"></script>
	<script src="../resources/webgl-test-utils.js"></script>
	</head>
	<body>
	<div id="description"></div>
	<div id="console"></div>
	<canvas id="canvas" width="2" height="2" style="width: 100px; height:100px; border: 1px solid black;"> </canvas>
	<script>
	"use strict";
	description();

	var wtu = WebGLTestUtils;
	var gl = wtu.create3DContext("canvas");
	if (!gl) {
	testFailed("context does not exist");
	} else {
	testPassed("context exists");

	debug("");
	debug("Checking texture formats.");

	var numValidFormats = 0;
	var clearColor = [0.25, 0.5, 0.75, 0.25];

	var floatToBits = function(value, bits) {
	var range = (1 << bits) - 1;
	var result = 0;
	if (range > 0) {
	result = Math.floor(Math.floor(value * range) * 255 / range);
	}

	//debug("v = " + value + ", bits = " + bits + ", range = " + range + ", result = " + result);
	return result;
	}

	var testFormat = function(info) {
	debug("");
	debug("testing: " + info.format + ", " + info.type);

	var format = gl[info.format];
	var type = gl[info.type];

	gl.texImage2D(gl.TEXTURE_2D,
	0, // level
	format, // internalFormat
	16, // width
	16, // height
	0, // border
	format, // format
	type, // type
	null); // data
	var fbStatus = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
	debug(wtu.glEnumToString(gl, fbStatus));
	if (fbStatus != gl.FRAMEBUFFER_COMPLETE) {
	debug("format unsupported");
	if (info.mustBeFramebufferComplete) {
	testFailed(info.format + " must be FRAMEBUFFER_COMPLETE");
	}
	return;
	}

	++numValidFormats;

	var startExpected = [0, 0, 0, info.channels[3] < 0 ? 255 : 0];

	var expected = [];
	var tolerance = [];
	for (var ii = 0; ii < 4; ++ii) {
	var color = 0;
	var channel = info.channels[ii];
	if (channel < 0) {
	color = ii < 3 ? 0 : 255
	} else {
	color = floatToBits(clearColor[channel], info.bits[ii]);
	}
	expected.push(color);
	tolerance.push(channel < 0 ? 0 : (1 + (1 << (8 - info.bits[ii]))));
	}

	wtu.checkCanvas(gl, startExpected, "should be " + startExpected);
	gl.clear(gl.COLOR_BUFFER_BIT);
	wtu.checkCanvas(gl, expected, "should be " + expected + " with tolerance " + tolerance, tolerance);
	}

	var validFormats = [
	{ format: 'RGBA',
	type: 'UNSIGNED_BYTE',
	channels: [0, 1, 2, 3],
	bits: [8, 8, 8, 8],
	mustBeFramebufferComplete: true
	},
	{ format: 'ALPHA',
	type: 'UNSIGNED_BYTE',
	channels: [-1, -1, -1, 3],
	bits: [0, 0, 0, 8],
	mustBeFramebufferComplete: false
	},
	{ format: 'RGB',
	type: 'UNSIGNED_BYTE',
	channels: [0, 1, 2, -1],
	bits: [8, 8, 8, 0],
	mustBeFramebufferComplete: false
	},
	{ format: 'RGB',
	type: 'UNSIGNED_SHORT_5_6_5',
	channels: [0, 1, 2, -1],
	bits: [5, 6, 5, 0],
	mustBeFramebufferComplete: false
	},
	{ format: 'RGBA',
	type: 'UNSIGNED_SHORT_5_5_5_1',
	channels: [0, 1, 2, 3],
	bits: [5, 5, 5, 1],
	mustBeFramebufferComplete: false
	},
	{ format: 'RGBA',
	type: 'UNSIGNED_SHORT_4_4_4_4',
	channels: [0, 1, 2, 3],
	bits: [4, 4, 4, 4],
	mustBeFramebufferComplete: false
	},
	{ format: 'LUMINANCE',
	type: 'UNSIGNED_BYTE',
	channels: [0, 0, 0, -1],
	bits: [8, 8, 8, -1],
	mustBeFramebufferComplete: false
	},
	{ format: 'LUMINANCE_ALPHA',
	type: 'UNSIGNED_BYTE',
	channels: [0, 0, 0, 3],
	bits: [8, 8, 8, 8],
	mustBeFramebufferComplete: false
	}
	];

	gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
	var fbo = gl.createFramebuffer();
	gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
	var tex = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_2D, tex);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
	gl.framebufferTexture2D(
	gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);

	for (var ii = 0; ii < validFormats.length; ++ii) {
	var info = validFormats[ii];
	testFormat(info);
	}

	debug("");
	shouldBeTrue("numValidFormats > 0");
	glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
	}

	debug("");
	var successfullyParsed = true;

	</script>
	<script src="../../resources/js-test-post.js"></script>

	</body>
	</html>