| <!-- |
| |
| /* |
| ** 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>CopyTexSubImage2D partial destination texture 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> |
| <canvas id="canvas"></canvas> |
| <div id="console"></div> |
| |
| <script> |
| "use strict"; |
| description("Verifies that copyTexSubImage2D redefining part of the destination texture works as expected."); |
| |
| function runTest() { |
| var wtu = WebGLTestUtils; |
| var canvas = document.getElementById("canvas"); |
| canvas.width = 256; |
| canvas.height = 256; |
| var gl = wtu.create3DContext(canvas); |
| // Try this test multiple times. |
| for (var ii = 0; ii < 10; ++ii) { |
| gl.clearColor(0.0, 1.0, 0.0, 1.0); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| var tex = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR); |
| // Allocate a texture twice as tall as the canvas. |
| // Conceptually, it is filled with zeros. |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, canvas.width, 2 * canvas.height, |
| 0, gl.RGBA, gl.UNSIGNED_BYTE, null); |
| // Copy the entire framebuffer into the top part of this texture. |
| gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, canvas.width, canvas.height); |
| // Draw the texture back into the canvas. |
| var program = wtu.setupTexturedQuad(gl); |
| wtu.drawUnitQuad(gl); |
| gl.deleteProgram(program); |
| gl.deleteTexture(tex); |
| wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height / 2, [0, 255, 0, 255], |
| "should be green"); |
| wtu.checkCanvasRect(gl, 0, canvas.height / 2, canvas.width, canvas.height / 2, [0, 0, 0, 0], |
| "should be transparent black"); |
| } |
| } |
| |
| runTest(); |
| |
| debug(""); |
| var successfullyParsed = true; |
| </script> |
| <script src="../../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |
