| <!-- |
| |
| /* |
| ** Copyright (c) 2012 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"> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../resources/js-test-pre.js"></script> |
| <script src="../resources/webgl-test.js"></script> |
| <script src="../resources/webgl-test-utils.js"></script> |
| |
| <script> |
| "use strict"; |
| var successfullyParsed = false; |
| |
| function init() |
| { |
| initTestingHarnessWaitUntilDone(); |
| |
| description('Verify copyTexImage2D and copyTexSubImage2D'); |
| |
| runTest(); |
| } |
| |
| var gl = null; |
| var wtu = WebGLTestUtils; |
| |
| function runTestIteration(antialias) |
| { |
| var canvas = document.getElementById( |
| antialias ? "antialiasOn" : "antialiasOff"); |
| var attribs = antialias ? { antialias: true } : { antialias: false }; |
| gl = wtu.create3DContext(canvas, attribs); |
| var program = wtu.setupTexturedQuad(gl); |
| var textureLoc = gl.getUniformLocation(program, "tex"); |
| glErrorShouldBe(gl, gl.NO_ERROR, "During Initialization"); |
| |
| gl.colorMask(1, 1, 1, 1); |
| gl.disable(gl.BLEND); |
| debug('Testing copyTexImage2D'); |
| |
| // Red canvas |
| gl.clearColor(1, 0, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| |
| var texture = gl.createTexture(); |
| // Bind the texture to texture unit 0 |
| gl.bindTexture(gl.TEXTURE_2D, texture); |
| // Set up texture |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 2, 2, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); |
| gl.uniform1i(textureLoc, 0); |
| |
| var colors = [ |
| [1, 0, 0, 1], |
| [0, 1, 0, 1], |
| [0, 0, 1, 1], |
| [0.5, 0.5, 0.5, 0.5], |
| ]; |
| var count = 0; |
| for (var yy = -2; yy <= 2; ++yy) { |
| for (var xx = -2; xx <= 2; ++xx) { |
| for (var ii = 0; ii < 2; ++ii) { |
| var texColor = colors[count]; |
| var clearColor = colors[(count + 1) % colors.length]; |
| // clear to some color |
| gl.clearColor(texColor[0], texColor[1], texColor[2], texColor[3]); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| |
| // copy that color to the texture. |
| switch (ii) { |
| case 0: |
| gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, xx, yy, 2, 2, 0); |
| glErrorShouldBe(gl, gl.NO_ERROR, |
| "using copyTexImage2D: x =" + xx + ", y = " + yy); |
| break; |
| case 1: |
| gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, xx, yy, 2, 2); |
| glErrorShouldBe(gl, gl.NO_ERROR, |
| "using copyTexSubImage2D: x =" + xx + ", y = " + yy); |
| break; |
| } |
| |
| // clear to some other color. |
| gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| |
| // Draw the triangles |
| wtu.clearAndDrawUnitQuad(gl); |
| |
| // check the rendering results |
| for (var iy = 0; iy < 2; ++iy) { |
| for (var ix = 0; ix < 2; ++ix) { |
| var x = xx + ix; |
| var y = yy + iy; |
| var expectedColor = (x < 0 || y < 0 || x >= 2 || y >= 2) ? |
| [0,0,0,0] : |
| [Math.floor(255 * texColor[0]), |
| Math.floor(255 * texColor[1]), |
| Math.floor(255 * texColor[2]), |
| Math.floor(255 * texColor[3])]; |
| wtu.checkCanvasRect(gl, ix, iy, 1, 1, expectedColor, |
| "" + ix + ", " + iy + " should render " + expectedColor + " (+/-1)", 1); |
| } |
| } |
| count = (count + 1) % colors.length; |
| } |
| } |
| } |
| |
| debug(""); |
| } |
| |
| function runTest(antialias) |
| { |
| debug("Testing with antialias on"); |
| runTestIteration(true); |
| debug("Testing with antialias off"); |
| runTestIteration(false); |
| |
| finishTest(); |
| } |
| </script> |
| </head> |
| <body onload="init()"> |
| <canvas id="antialiasOn" width="2" height="2"></canvas> |
| <canvas id="antialiasOff" width="2" height="2"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| </body> |
| </html> |
