| /* |
| ** 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. |
| */ |
| |
| function generateTest(pixelFormat, pixelType, prologue) { |
| var wtu = WebGLTestUtils; |
| var gl = null; |
| var textureLoc = null; |
| var successfullyParsed = false; |
| var imageData = null; |
| |
| var init = function() |
| { |
| initTestingHarnessWaitUntilDone(); |
| |
| description('Verify texImage2D and texSubImage2D code paths taking ImageData (' + pixelFormat + '/' + pixelType + ')'); |
| |
| gl = wtu.create3DContext("example"); |
| |
| if (!prologue(gl)) { |
| finishTest(); |
| return; |
| } |
| |
| var program = wtu.setupTexturedQuad(gl); |
| gl.clearColor(0,0,0,1); |
| gl.clearDepth(1); |
| gl.disable(gl.BLEND); |
| |
| textureLoc = gl.getUniformLocation(program, "tex"); |
| |
| var canvas2d = document.getElementById("texcanvas"); |
| var context2d = canvas2d.getContext("2d"); |
| imageData = context2d.createImageData(1, 2); |
| var data = imageData.data; |
| data[0] = 255; |
| data[1] = 0; |
| data[2] = 0; |
| data[3] = 255; |
| data[4] = 0; |
| data[5] = 255; |
| data[6] = 0; |
| data[7] = 0; |
| |
| runTest(); |
| } |
| |
| function runOneIteration(useTexSubImage2D, flipY, premultiplyAlpha, topColor, bottomColor) |
| { |
| debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') + |
| ' with flipY=' + flipY + ' and premultiplyAlpha=' + premultiplyAlpha); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| // Enable writes to the RGBA channels |
| gl.colorMask(1, 1, 1, 0); |
| var texture = gl.createTexture(); |
| // Bind the texture to texture unit 0 |
| gl.bindTexture(gl.TEXTURE_2D, texture); |
| // Set up texture parameters |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); |
| // Set up pixel store parameters |
| gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY); |
| gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha); |
| // Upload the image into the texture |
| if (useTexSubImage2D) { |
| // Initialize the texture to black first |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], 1, 2, 0, |
| gl[pixelFormat], gl[pixelType], null); |
| gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl[pixelFormat], gl[pixelType], imageData); |
| } else { |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], gl[pixelFormat], gl[pixelType], imageData); |
| } |
| |
| // Point the uniform sampler to texture unit 0 |
| gl.uniform1i(textureLoc, 0); |
| // Draw the triangles |
| wtu.drawQuad(gl, [0, 0, 0, 255]); |
| |
| // Check the top pixel and bottom pixel and make sure they have |
| // the right color. |
| debug("Checking bottom pixel"); |
| wtu.checkCanvasRect(gl, 0, 0, 1, 1, bottomColor, "shouldBe " + bottomColor); |
| debug("Checking top pixel"); |
| wtu.checkCanvasRect(gl, 0, 1, 1, 1, topColor, "shouldBe " + topColor); |
| } |
| |
| function runTest() |
| { |
| var red = [255, 0, 0, 255]; |
| var green = [0, 255, 0, 255]; |
| var redPremultiplyAlpha = [255, 0, 0, 255]; |
| var greenPremultiplyAlpha = [0, 0, 0, 255]; |
| |
| runOneIteration(false, true, false, |
| red, green); |
| runOneIteration(false, false, false, |
| green, red); |
| runOneIteration(false, true, true, |
| redPremultiplyAlpha, greenPremultiplyAlpha); |
| runOneIteration(false, false, true, |
| greenPremultiplyAlpha, redPremultiplyAlpha); |
| runOneIteration(true, true, false, |
| red, green); |
| runOneIteration(true, false, false, |
| green, red); |
| runOneIteration(true, true, true, |
| redPremultiplyAlpha, greenPremultiplyAlpha); |
| runOneIteration(true, false, true, |
| greenPremultiplyAlpha, redPremultiplyAlpha); |
| |
| glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); |
| finishTest(); |
| } |
| |
| return init; |
| } |