LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance/extensions/webgl-draw-buffers-framebuffer-unsupported.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2016 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 WEBGL_draw_buffers FRAMEBUFFER_UNSUPPORTED Test</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>
 <div id="console"></div>
 <canvas id="canvas" width="2" height="2"> </canvas>

 <script>
 "use strict";
 var wtu = WebGLTestUtils;
 var gl;
 var canvas = document.getElementById("canvas");
 var fb1 = null;
 var fb2 = null;

 function checkFramebuffer(expected) {
     var actual = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
     if (expected.indexOf(actual) < 0) {
         var msg = "checkFramebufferStatus expects [";
         for (var index = 0; index < expected.length; ++index) {
             msg += wtu.glEnumToString(gl, expected[index]);
             if (index + 1 < expected.length)
                 msg += ", ";
         }
         msg += "], was " + wtu.glEnumToString(gl, actual);
         testFailed(msg);
     } else {
         var msg = "checkFramebufferStatus got " + wtu.glEnumToString(gl, actual) +
                   " as expected";
         testPassed(msg);
     }
 }

 function testImageAttachedTwoPoints() {
     debug("");
     debug("Checking an image is attached to more than one color attachment in a framebuffer.");

     var tex1 = gl.createTexture();
     var tex2 = gl.createTexture();
     gl.bindTexture(gl.TEXTURE_2D, tex1);
     gl.texImage2D(gl.TEXTURE_2D,
                   0,                                          // level
                   gl.RGBA,                                    // internalFormat
                   1,                                          // width
                   1,                                          // height
                   0,                                          // border
                   gl.RGBA,                                    // format
                   gl.UNSIGNED_BYTE,                           // type
                   new Uint8Array(4));                         // data
     gl.bindTexture(gl.TEXTURE_2D, tex2);
     gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Texture creation should succeed.");

     gl.bindFramebuffer(gl.FRAMEBUFFER, fb1);
     gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT0_WEBGL, gl.TEXTURE_2D, tex1, 0);
     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
     gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT1_WEBGL, gl.TEXTURE_2D, tex2, 0);
     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
     gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT2_WEBGL, gl.TEXTURE_2D, tex1, 0);
     checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);

     gl.bindFramebuffer(gl.FRAMEBUFFER, null);
     gl.bindFramebuffer(gl.FRAMEBUFFER, fb2);
     var texCube = gl.createTexture();
     gl.bindTexture(gl.TEXTURE_CUBE_MAP, texCube);
     for (var target = gl.TEXTURE_CUBE_MAP_POSITIVE_X; target < gl.TEXTURE_CUBE_MAP_POSITIVE_X + 6; target++) {
         gl.texImage2D(target, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
     }
     gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT0_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
     gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT1_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_Y, texCube, 0);
     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
     gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT2_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
     checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);

     // Clean up
     gl.deleteTexture(tex1);
     gl.deleteTexture(tex2);
     gl.deleteTexture(texCube);
 }

 description("This tests FRAMEBUFFER_UNSUPPORTED.");

 shouldBeNonNull("gl = wtu.create3DContext(undefined, undefined, 1)");
 fb1 = gl.createFramebuffer();
 fb2 = gl.createFramebuffer();

 var ext = gl.getExtension("WEBGL_draw_buffers");
 if (!ext) {
     testPassed("No WEBGL_draw_buffers support -- this is legal");
 } else {
     var bufs = [ext.COLOR_ATTACHMENT0_WEBGL, ext.COLOR_ATTACHMENT1_WEBGL, ext.COLOR_ATTACHMENT2_WEBGL];
     gl.bindFramebuffer(gl.FRAMEBUFFER, fb1);
     ext.drawBuffersWEBGL(bufs);
     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be able to call drawBuffersWEBGL successfully");
     gl.bindFramebuffer(gl.FRAMEBUFFER, fb2);
     ext.drawBuffersWEBGL(bufs);
     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be able to call drawBuffersWEBGL successfully");

     testPassed("Successfully enabled WEBGL_draw_buffers extension");
     testImageAttachedTwoPoints();

     gl.deleteFramebuffer(fb1);
     gl.deleteFramebuffer(fb2);
 }

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

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

	/*
	** Copyright (c) 2016 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 WEBGL_draw_buffers FRAMEBUFFER_UNSUPPORTED Test</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>
	<div id="console"></div>
	<canvas id="canvas" width="2" height="2"> </canvas>

	<script>
	"use strict";
	var wtu = WebGLTestUtils;
	var gl;
	var canvas = document.getElementById("canvas");
	var fb1 = null;
	var fb2 = null;

	function checkFramebuffer(expected) {
	var actual = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
	if (expected.indexOf(actual) < 0) {
	var msg = "checkFramebufferStatus expects [";
	for (var index = 0; index < expected.length; ++index) {
	msg += wtu.glEnumToString(gl, expected[index]);
	if (index + 1 < expected.length)
	msg += ", ";
	}
	msg += "], was " + wtu.glEnumToString(gl, actual);
	testFailed(msg);
	} else {
	var msg = "checkFramebufferStatus got " + wtu.glEnumToString(gl, actual) +
	" as expected";
	testPassed(msg);
	}
	}

	function testImageAttachedTwoPoints() {
	debug("");
	debug("Checking an image is attached to more than one color attachment in a framebuffer.");

	var tex1 = gl.createTexture();
	var tex2 = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_2D, tex1);
	gl.texImage2D(gl.TEXTURE_2D,
	0, // level
	gl.RGBA, // internalFormat
	1, // width
	1, // height
	0, // border
	gl.RGBA, // format
	gl.UNSIGNED_BYTE, // type
	new Uint8Array(4)); // data
	gl.bindTexture(gl.TEXTURE_2D, tex2);
	gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Texture creation should succeed.");

	gl.bindFramebuffer(gl.FRAMEBUFFER, fb1);
	gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT0_WEBGL, gl.TEXTURE_2D, tex1, 0);
	checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
	gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT1_WEBGL, gl.TEXTURE_2D, tex2, 0);
	checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
	gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT2_WEBGL, gl.TEXTURE_2D, tex1, 0);
	checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);

	gl.bindFramebuffer(gl.FRAMEBUFFER, null);
	gl.bindFramebuffer(gl.FRAMEBUFFER, fb2);
	var texCube = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_CUBE_MAP, texCube);
	for (var target = gl.TEXTURE_CUBE_MAP_POSITIVE_X; target < gl.TEXTURE_CUBE_MAP_POSITIVE_X + 6; target++) {
	gl.texImage2D(target, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
	}
	gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT0_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
	checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
	gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT1_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_Y, texCube, 0);
	checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
	gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT2_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
	checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);

	// Clean up
	gl.deleteTexture(tex1);
	gl.deleteTexture(tex2);
	gl.deleteTexture(texCube);
	}

	description("This tests FRAMEBUFFER_UNSUPPORTED.");

	shouldBeNonNull("gl = wtu.create3DContext(undefined, undefined, 1)");
	fb1 = gl.createFramebuffer();
	fb2 = gl.createFramebuffer();

	var ext = gl.getExtension("WEBGL_draw_buffers");
	if (!ext) {
	testPassed("No WEBGL_draw_buffers support -- this is legal");
	} else {
	var bufs = [ext.COLOR_ATTACHMENT0_WEBGL, ext.COLOR_ATTACHMENT1_WEBGL, ext.COLOR_ATTACHMENT2_WEBGL];
	gl.bindFramebuffer(gl.FRAMEBUFFER, fb1);
	ext.drawBuffersWEBGL(bufs);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be able to call drawBuffersWEBGL successfully");
	gl.bindFramebuffer(gl.FRAMEBUFFER, fb2);
	ext.drawBuffersWEBGL(bufs);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be able to call drawBuffersWEBGL successfully");

	testPassed("Successfully enabled WEBGL_draw_buffers extension");
	testImageAttachedTwoPoints();

	gl.deleteFramebuffer(fb1);
	gl.deleteFramebuffer(fb2);
	}

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

	</body>
	</html>