LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance/rendering/framebuffer-texture-switch.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 framebuffer texture attachment switching conformance 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>
 <canvas id="canvas" width="64" height="64"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script>
 "use strict";
 description("Test framebuffer texture attachment switching. The test uses one framebuffer object and switches its color attachment.");
 var wtu = WebGLTestUtils;

 var gl = wtu.create3DContext("canvas");
 var program = wtu.setupTexturedQuad(gl);

 var fb = gl.createFramebuffer();
 gl.bindFramebuffer(gl.FRAMEBUFFER, fb);

 var tex2 = gl.createTexture();
 gl.bindTexture(gl.TEXTURE_2D, tex2);
 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, canvas.width, canvas.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

 var tex1 = gl.createTexture();
 gl.bindTexture(gl.TEXTURE_2D, tex1);
 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, canvas.width, canvas.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

 gl.clearColor(1.0, 1.0, 1.0, 1.0);

 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

 var iterate = function(checkFBOs, iterations) {
     for (var i = 0; i < iterations; ++i) {
         debug("Clearing tex1 to white");
         gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex1, 0);
         if (checkFBOs)
             shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE");
         gl.clear(gl.COLOR_BUFFER_BIT);

         debug("Copying tex1 to tex2");
         gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex2, 0);
         if (checkFBOs)
             shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE");
         gl.drawArrays(gl.TRIANGLES, 0, 6);
     }
     // Read what is in tex2
     wtu.checkCanvas(gl, [255,255,255,255], "tex2 should be white");
 };

 debug("");
 debug("Warm-up iteration");
 iterate(true, 1);

 debug("");
 debug("Iterating the test a few times since at least one bug it has exposed is somewhat flaky.");
 for (var i = 0; i < 3; ++i) {
     debug("");
     debug("Iteration " + (i + 1));
     iterate(false, 2);
 }

 debug("");
 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors at the end of the test.");

 finishTest();

 var successfullyParsed = true;
 </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 framebuffer texture attachment switching conformance 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>
	<canvas id="canvas" width="64" height="64"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script>
	"use strict";
	description("Test framebuffer texture attachment switching. The test uses one framebuffer object and switches its color attachment.");
	var wtu = WebGLTestUtils;

	var gl = wtu.create3DContext("canvas");
	var program = wtu.setupTexturedQuad(gl);

	var fb = gl.createFramebuffer();
	gl.bindFramebuffer(gl.FRAMEBUFFER, fb);

	var tex2 = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_2D, tex2);
	gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, canvas.width, canvas.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

	var tex1 = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_2D, tex1);
	gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, canvas.width, canvas.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

	gl.clearColor(1.0, 1.0, 1.0, 1.0);

	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

	var iterate = function(checkFBOs, iterations) {
	for (var i = 0; i < iterations; ++i) {
	debug("Clearing tex1 to white");
	gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex1, 0);
	if (checkFBOs)
	shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE");
	gl.clear(gl.COLOR_BUFFER_BIT);

	debug("Copying tex1 to tex2");
	gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex2, 0);
	if (checkFBOs)
	shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE");
	gl.drawArrays(gl.TRIANGLES, 0, 6);
	}
	// Read what is in tex2
	wtu.checkCanvas(gl, [255,255,255,255], "tex2 should be white");
	};

	debug("");
	debug("Warm-up iteration");
	iterate(true, 1);

	debug("");
	debug("Iterating the test a few times since at least one bug it has exposed is somewhat flaky.");
	for (var i = 0; i < 3; ++i) {
	debug("");
	debug("Iteration " + (i + 1));
	iterate(false, 2);
	}

	debug("");
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors at the end of the test.");

	finishTest();

	var successfullyParsed = true;
	</script>
	</body>
	</html>