LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance2/renderbuffers/invalidate-framebuffer.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2015 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>Invalidate Framebuffer Against WebGL 2</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="20" height="20"> </canvas>
 <script>
 "use strict";
 description("This tests invalidateFramebuffer and invalidateSubFramebuffer");

 debug("");
 debug("Canvas.getContext");

 var wtu = WebGLTestUtils;
 var canvas = document.getElementById("canvas");
 var gl = wtu.create3DContext(canvas, { depth : true, stencil : false }, 2);
 if (!gl) {
   testFailed("context does not exist");
 } else {
   testPassed("context exists");

   debug("");
   debug("invalidate framebuffer.");

   gl.clearColor(0, 0, 0, 0);

   // setup framebuffer with depth attachment and multi-sampled color attachment
   var fb_m = gl.createFramebuffer();
   gl.bindFramebuffer(gl.FRAMEBUFFER, fb_m);

   var rb_m = gl.createRenderbuffer();
   gl.bindRenderbuffer(gl.RENDERBUFFER, rb_m);
   var samples = gl.getInternalformatParameter(gl.RENDERBUFFER, gl.RGBA8, gl.SAMPLES);
   gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rb_m);
   // invalidate the framebuffer when the attachment is incomplete: no storage allocated to the attached renderbuffer
   invalidateIncompleteAttachment(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0);
   gl.renderbufferStorageMultisample(gl.RENDERBUFFER, samples[0], gl.RGBA8, canvas.width, canvas.height);
   gl.clear(gl.COLOR_BUFFER_BIT);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "should be no errors after attaching a multi-sampled renderbuffer to fbo.");

   var rb = gl.createRenderbuffer();
   gl.bindRenderbuffer(gl.RENDERBUFFER, rb);
   gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, rb);
   // invalidate the framebuffer when the attachment is incomplete: no storage allocated to the attached renderbuffer
   invalidateIncompleteAttachment(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT);
   gl.renderbufferStorageMultisample(gl.RENDERBUFFER, samples[0], gl.DEPTH_COMPONENT16, canvas.width, canvas.height);
   gl.clear(gl.DEPTH_BUFFER_BIT);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "should be no errors after attaching a renderbuffer to fbo.");

   // in real world case, after some drawing, we can invalidate the depth attachment of the bound fbo
   invalidation(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.STENCIL_ATTACHMENT);

   // set up framebuffer to blit to and read back from
   var fb = gl.createFramebuffer();
   gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
   var buffer = gl.createRenderbuffer();
   gl.bindRenderbuffer(gl.RENDERBUFFER, buffer);
   gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA8, canvas.width, canvas.height);
   gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, buffer);
   gl.clear(gl.COLOR_BUFFER_BIT);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "should be no errors after attaching a renderbuffer to fbo.");

   gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fb_m);
   gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fb);
   gl.blitFramebuffer(0, 0, canvas.width, canvas.height, 0, 0, canvas.width, canvas.height, gl.COLOR_BUFFER_BIT, gl.NEAREST);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "should be no errors after bliting framebuffer.");

   // invalidate the multi-sampled color attachment of the bound read framebuffer after blitFramebuffer.
   invalidation(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.DEPTH_ATTACHMENT);

   var maxColorAttachments = gl.getParameter(gl.MAX_COLOR_ATTACHMENTS);
   gl.invalidateSubFramebuffer(gl.READ_FRAMEBUFFER, [gl.COLOR_ATTACHMENT0 + maxColorAttachments], 5, 5, 10, 10);
   wtu.glErrorShouldBe(gl, [gl.INVALID_OPERATION, gl.INVALID_ENUM],
       "calling invalidateSubFramebuffer to invalidate a COLOR_ATTACHMENT that exceeds MAX_COLOR_ATTACHMENT should generate INVALID_ENUM or INVALID_OPERATION.");
   gl.invalidateFramebuffer(gl.READ_FRAMEBUFFER, [gl.COLOR_ATTACHMENT0 + maxColorAttachments]);
   wtu.glErrorShouldBe(gl, [gl.INVALID_OPERATION, gl.INVALID_ENUM],
       "calling invalidateFramebuffer to invalidate a COLOR_ATTACHMENT that exceeds MAX_COLOR_ATTACHMENT should generate INVALID_ENUM or INVALID_OPERATION.");

   // invalidate the default framebuffer
   gl.bindFramebuffer(gl.FRAMEBUFFER, null);
   invalidation(gl.FRAMEBUFFER, gl.DEPTH, gl.STENCIL);

   gl.deleteFramebuffer(fb_m);
   gl.deleteRenderbuffer(rb_m);
   gl.deleteRenderbuffer(rb);
   gl.deleteFramebuffer(fb);
   gl.deleteRenderbuffer(buffer);
 }

 function invalidation(target, valid_attachment, invalid_attachment) {
   gl.invalidateSubFramebuffer(target, [invalid_attachment], 5, 5, 10, 10);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateSubFramebuffer to invalidate a specified attachment that does not exist will be ignored. There should be no errors.");
   gl.invalidateSubFramebuffer(target, [valid_attachment], 5, 5, 10, 10);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateSubFramebuffer should succeed.");

   gl.invalidateSubFramebuffer(target, [valid_attachment], 5, 5, -5, -5);
   wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
       "calling invalidateSubFramebuffer should generate INVALID_VALUE if width < 0 or height < 0.");

   gl.invalidateSubFramebuffer(target, [valid_attachment], -5, -5, 10, 10);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateSubFramebuffer should succeed, even the invalidated pixels may be outside of the framebuffer allocated to current context. These pixels are ignored.");
   gl.invalidateSubFramebuffer(target, [valid_attachment], 5, 5, 20, 20);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateSubFramebuffer should succeed, even the invalidated pixels may be outside of the framebuffer allocated to current context. These pixels are ignored.");

   gl.invalidateFramebuffer(target, [invalid_attachment]);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateFramebuffer to invalidate a specified attachment that does not exist will be ignored. There should be no errors.");
   gl.invalidateFramebuffer(target, [valid_attachment]);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateFramebuffer should succeed.");
 }

 function invalidateIncompleteAttachment(target, incomplete_attachment) {
   shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)",
            "gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
   gl.invalidateSubFramebuffer(target, [incomplete_attachment], 5, 5, 10, 10);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateSubFramebuffer to invalidate an incomplete attachment will be ignored. There should be no errors");
   gl.invalidateFramebuffer(target, [incomplete_attachment]);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "calling invalidateFramebuffer to invalidate an incomplete attachment will be ignored. There should be no errors.");
 }

 debug("");
 var successfullyParsed = true;

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

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

	/*
	** Copyright (c) 2015 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>Invalidate Framebuffer Against WebGL 2</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="20" height="20"> </canvas>
	<script>
	"use strict";
	description("This tests invalidateFramebuffer and invalidateSubFramebuffer");

	debug("");
	debug("Canvas.getContext");

	var wtu = WebGLTestUtils;
	var canvas = document.getElementById("canvas");
	var gl = wtu.create3DContext(canvas, { depth : true, stencil : false }, 2);
	if (!gl) {
	testFailed("context does not exist");
	} else {
	testPassed("context exists");

	debug("");
	debug("invalidate framebuffer.");

	gl.clearColor(0, 0, 0, 0);

	// setup framebuffer with depth attachment and multi-sampled color attachment
	var fb_m = gl.createFramebuffer();
	gl.bindFramebuffer(gl.FRAMEBUFFER, fb_m);

	var rb_m = gl.createRenderbuffer();
	gl.bindRenderbuffer(gl.RENDERBUFFER, rb_m);
	var samples = gl.getInternalformatParameter(gl.RENDERBUFFER, gl.RGBA8, gl.SAMPLES);
	gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rb_m);
	// invalidate the framebuffer when the attachment is incomplete: no storage allocated to the attached renderbuffer
	invalidateIncompleteAttachment(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0);
	gl.renderbufferStorageMultisample(gl.RENDERBUFFER, samples[0], gl.RGBA8, canvas.width, canvas.height);
	gl.clear(gl.COLOR_BUFFER_BIT);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"should be no errors after attaching a multi-sampled renderbuffer to fbo.");

	var rb = gl.createRenderbuffer();
	gl.bindRenderbuffer(gl.RENDERBUFFER, rb);
	gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, rb);
	// invalidate the framebuffer when the attachment is incomplete: no storage allocated to the attached renderbuffer
	invalidateIncompleteAttachment(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT);
	gl.renderbufferStorageMultisample(gl.RENDERBUFFER, samples[0], gl.DEPTH_COMPONENT16, canvas.width, canvas.height);
	gl.clear(gl.DEPTH_BUFFER_BIT);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"should be no errors after attaching a renderbuffer to fbo.");

	// in real world case, after some drawing, we can invalidate the depth attachment of the bound fbo
	invalidation(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.STENCIL_ATTACHMENT);

	// set up framebuffer to blit to and read back from
	var fb = gl.createFramebuffer();
	gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
	var buffer = gl.createRenderbuffer();
	gl.bindRenderbuffer(gl.RENDERBUFFER, buffer);
	gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA8, canvas.width, canvas.height);
	gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, buffer);
	gl.clear(gl.COLOR_BUFFER_BIT);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"should be no errors after attaching a renderbuffer to fbo.");

	gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fb_m);
	gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fb);
	gl.blitFramebuffer(0, 0, canvas.width, canvas.height, 0, 0, canvas.width, canvas.height, gl.COLOR_BUFFER_BIT, gl.NEAREST);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"should be no errors after bliting framebuffer.");

	// invalidate the multi-sampled color attachment of the bound read framebuffer after blitFramebuffer.
	invalidation(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.DEPTH_ATTACHMENT);

	var maxColorAttachments = gl.getParameter(gl.MAX_COLOR_ATTACHMENTS);
	gl.invalidateSubFramebuffer(gl.READ_FRAMEBUFFER, [gl.COLOR_ATTACHMENT0 + maxColorAttachments], 5, 5, 10, 10);
	wtu.glErrorShouldBe(gl, [gl.INVALID_OPERATION, gl.INVALID_ENUM],
	"calling invalidateSubFramebuffer to invalidate a COLOR_ATTACHMENT that exceeds MAX_COLOR_ATTACHMENT should generate INVALID_ENUM or INVALID_OPERATION.");
	gl.invalidateFramebuffer(gl.READ_FRAMEBUFFER, [gl.COLOR_ATTACHMENT0 + maxColorAttachments]);
	wtu.glErrorShouldBe(gl, [gl.INVALID_OPERATION, gl.INVALID_ENUM],
	"calling invalidateFramebuffer to invalidate a COLOR_ATTACHMENT that exceeds MAX_COLOR_ATTACHMENT should generate INVALID_ENUM or INVALID_OPERATION.");

	// invalidate the default framebuffer
	gl.bindFramebuffer(gl.FRAMEBUFFER, null);
	invalidation(gl.FRAMEBUFFER, gl.DEPTH, gl.STENCIL);

	gl.deleteFramebuffer(fb_m);
	gl.deleteRenderbuffer(rb_m);
	gl.deleteRenderbuffer(rb);
	gl.deleteFramebuffer(fb);
	gl.deleteRenderbuffer(buffer);
	}

	function invalidation(target, valid_attachment, invalid_attachment) {
	gl.invalidateSubFramebuffer(target, [invalid_attachment], 5, 5, 10, 10);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateSubFramebuffer to invalidate a specified attachment that does not exist will be ignored. There should be no errors.");
	gl.invalidateSubFramebuffer(target, [valid_attachment], 5, 5, 10, 10);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateSubFramebuffer should succeed.");

	gl.invalidateSubFramebuffer(target, [valid_attachment], 5, 5, -5, -5);
	wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
	"calling invalidateSubFramebuffer should generate INVALID_VALUE if width < 0 or height < 0.");

	gl.invalidateSubFramebuffer(target, [valid_attachment], -5, -5, 10, 10);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateSubFramebuffer should succeed, even the invalidated pixels may be outside of the framebuffer allocated to current context. These pixels are ignored.");
	gl.invalidateSubFramebuffer(target, [valid_attachment], 5, 5, 20, 20);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateSubFramebuffer should succeed, even the invalidated pixels may be outside of the framebuffer allocated to current context. These pixels are ignored.");

	gl.invalidateFramebuffer(target, [invalid_attachment]);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateFramebuffer to invalidate a specified attachment that does not exist will be ignored. There should be no errors.");
	gl.invalidateFramebuffer(target, [valid_attachment]);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateFramebuffer should succeed.");
	}

	function invalidateIncompleteAttachment(target, incomplete_attachment) {
	shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)",
	"gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
	gl.invalidateSubFramebuffer(target, [incomplete_attachment], 5, 5, 10, 10);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateSubFramebuffer to invalidate an incomplete attachment will be ignored. There should be no errors");
	gl.invalidateFramebuffer(target, [incomplete_attachment]);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"calling invalidateFramebuffer to invalidate an incomplete attachment will be ignored. There should be no errors.");
	}

	debug("");
	var successfullyParsed = true;

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

	</body>
	</html>