| /* |
| ** 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 successfullyParsed = false; |
| |
| var init = function() |
| { |
| initTestingHarnessWaitUntilDone(); |
| |
| description('Verify texImage2D and texSubImage2D code paths taking canvas elements (' + 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); |
| |
| var testCanvas = document.createElement('canvas'); |
| runTest(testCanvas); |
| //document.body.appendChild(testCanvas); |
| } |
| |
| function setCanvasToRedGreen(ctx) { |
| var width = ctx.canvas.width; |
| var height = ctx.canvas.height; |
| var halfHeight = Math.floor(height / 2); |
| ctx.fillStyle = "#ff0000"; |
| ctx.fillRect(0, 0, width, halfHeight); |
| ctx.fillStyle = "#00ff00"; |
| ctx.fillRect(0, halfHeight, width, height - halfHeight); |
| } |
| |
| function drawTextInCanvas(ctx) { |
| var width = ctx.canvas.width; |
| var height = ctx.canvas.height; |
| ctx.fillStyle = "#ffffff"; |
| ctx.fillRect(0, 0, width, height); |
| ctx.font = '20pt Arial'; |
| ctx.fillStyle = 'black'; |
| ctx.textAlign = "center"; |
| ctx.textBaseline = "middle"; |
| ctx.fillText("1234567890", width / 2, height / 4); |
| } |
| |
| function setCanvasTo257x257(ctx) { |
| ctx.canvas.width = 257; |
| ctx.canvas.height = 257; |
| setCanvasToRedGreen(ctx); |
| } |
| |
| function setCanvasTo1x2(ctx) { |
| ctx.canvas.width = 1; |
| ctx.canvas.height = 2; |
| setCanvasToRedGreen(ctx); |
| } |
| |
| function runOneIteration(canvas, useTexSubImage2D, flipY, topColor, bottomColor, opt_texture, opt_fontTest) |
| { |
| debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') + |
| ' with flipY=' + flipY + ' canvas size: ' + canvas.width + 'x' + canvas.height + |
| (opt_fontTest ? " with fonts" : " with red-green")); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| // Disable any writes to the alpha channel |
| // No idea why this was here. If it's important put it back and leave a comment as to why |
| // gl.colorMask(1, 1, 1, 0); |
| if (!opt_texture) { |
| 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); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); |
| } else { |
| var texture = opt_texture; |
| } |
| // Set up pixel store parameters |
| gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY); |
| gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false); |
| gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE); |
| // Upload the image into the texture |
| if (useTexSubImage2D) { |
| // Initialize the texture to black first |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], canvas.width, canvas.height, 0, |
| gl[pixelFormat], gl[pixelType], null); |
| gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl[pixelFormat], gl[pixelType], canvas); |
| } else { |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], gl[pixelFormat], gl[pixelType], canvas); |
| } |
| |
| // Draw the triangles |
| wtu.drawQuad(gl, [0, 255, 0, 255]); |
| |
| if (opt_fontTest) { |
| var width = gl.canvas.width; |
| var height = gl.canvas.height; |
| var halfHeight = Math.floor(height / 2); |
| var top = flipY ? 0 : (height - halfHeight); |
| var bottom = flipY ? (height - halfHeight) : 0; |
| // check half is a solid color. |
| wtu.checkCanvasRect( |
| gl, 0, top, width, halfHeight, |
| [255, 255, 255, 255], |
| "should be white"); |
| // check other half is not a solid color. |
| wtu.checkCanvasRectColor( |
| gl, 0, bottom, width, halfHeight, |
| [255, 255, 255, 255], 0, |
| function() { |
| testFailed("font missing"); |
| }, |
| function() { |
| testPassed("font renderered"); |
| }, |
| debug); |
| } else { |
| // Check a few pixels near the top and bottom and make sure they have |
| // the right color. |
| var width = gl.canvas.width; |
| var height = gl.canvas.height; |
| var halfHeight = Math.floor(height / 2); |
| debug("Checking bottom"); |
| wtu.checkCanvasRect(gl, 0, 0, width, halfHeight, bottomColor, |
| "shouldBe " + bottomColor); |
| debug("Checking top"); |
| wtu.checkCanvasRect(gl, 0, height - halfHeight, width, halfHeight, topColor, |
| "shouldBe " + topColor); |
| } |
| |
| if (false) { |
| var m = new Image(); |
| m.src = gl.canvas.toDataURL(); |
| document.getElementById("console").appendChild(m); |
| document.getElementById("console").appendChild(document.createElement("hr")); |
| } |
| |
| return texture; |
| } |
| |
| function runTest(canvas) |
| { |
| var ctx = canvas.getContext("2d"); |
| var red = [255, 0, 0]; |
| var green = [0, 255, 0]; |
| |
| var count = 4; |
| var caseNdx = 0; |
| |
| var cases = [ |
| { sub: false, flipY: true, top: red, bottom: green, font: false, init: setCanvasTo1x2 }, |
| { sub: false, flipY: false, top: green, bottom: red, font: false }, |
| { sub: true, flipY: true, top: red, bottom: green, font: false }, |
| { sub: true, flipY: false, top: green, bottom: red, font: false }, |
| { sub: false, flipY: true, top: red, bottom: green, font: false, init: setCanvasTo257x257 }, |
| { sub: false, flipY: false, top: green, bottom: red, font: false }, |
| { sub: true, flipY: true, top: red, bottom: green, font: false }, |
| { sub: true, flipY: false, top: green, bottom: red, font: false }, |
| { sub: false, flipY: true, top: red, bottom: green, font: true, init: drawTextInCanvas }, |
| { sub: false, flipY: false, top: green, bottom: red, font: true }, |
| { sub: true, flipY: true, top: red, bottom: green, font: true }, |
| { sub: true, flipY: false, top: green, bottom: red, font: true }, |
| ]; |
| |
| var texture; |
| function runNextTest() { |
| var c = cases[caseNdx]; |
| if (c.init) { |
| c.init(ctx); |
| } |
| texture = runOneIteration(canvas, c.sub, c.flipY, c.top, c.bottom, texture, c.font); |
| // for the first 2 iterations always make a new texture. |
| if (count > 2) { |
| texture = undefined; |
| } |
| ++caseNdx; |
| if (caseNdx == cases.length) { |
| caseNdx = 0; |
| --count; |
| if (!count) { |
| glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); |
| finishTest(); |
| return; |
| } |
| } |
| wtu.waitForComposite(gl, runNextTest); |
| } |
| runNextTest(); |
| } |
| |
| return init; |
| } |
