| <!-- |
| |
| /* |
| ** Copyright (c) 2013 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: Check that state is not lost by compositing</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../resources/js-test-pre.js"></script> |
| <script src="../resources/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <canvas id="testbed" width="16" height="16" style="width:50px; height:50px"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description(); |
| var wtu = WebGLTestUtils; |
| |
| function runTest() |
| { |
| var gl = wtu.create3DContext('testbed', { antialias: false }); |
| if (!gl) { |
| testFailed('could not create context'); |
| return; |
| } |
| |
| var program = wtu.setupTexturedQuad(gl); |
| var tex = gl.createTexture(); |
| var fb = gl.createFramebuffer(); |
| |
| var step1 = function() { |
| wtu.fillTexture(gl, tex, 1, 1, [0, 255, 0, 255]); |
| wtu.clearAndDrawUnitQuad(gl); |
| wtu.checkCanvas(gl, [0, 255, 0, 255], "drawing with texture should be green"); |
| }; |
| |
| var step2 = function() { |
| wtu.clearAndDrawUnitQuad(gl); |
| wtu.checkCanvas(gl, [0, 255, 0, 255], "drawing with texture after composite without rebinding should be green"); |
| |
| // Clear background to red |
| gl.clearColor(1, 0, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| |
| // Bind framebuffer with green texture. |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fb); |
| gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0); |
| wtu.checkCanvasRect(gl, 0, 0, 1, 1, [0, 255, 0, 255], "reading from fbo with attached texture should be green"); |
| }; |
| |
| var step3 = function() { |
| // Should still have fb bound and reading should be green |
| wtu.checkCanvasRect(gl, 0, 0, 1, 1, [0, 255, 0, 255], "reading from fbo after composite without rebinding should be green"); |
| }; |
| |
| var steps = [ |
| step1, |
| step2, |
| step3, |
| ]; |
| |
| var stepIndex = 0; |
| var runNextStep = function() { |
| steps[stepIndex++](); |
| if (stepIndex == steps.length) { |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors"); |
| finishTest(); |
| return; |
| } |
| wtu.waitForComposite(runNextStep); |
| }; |
| runNextStep(); |
| } |
| |
| runTest(); |
| var successfullyParsed = true; |
| </script> |
| </body> |
| </html> |
| |