| /* |
| * Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| * for details. All rights reserved. Use of this source code is governed by a |
| * BSD-style license that can be found in the LICENSE file. |
| */ |
| /** |
| * @description Test that applying a color profile to a texture with separate |
| * alpha doesn't destroy the texture. |
| */ |
| import "dart:html"; |
| import "dart:web_gl" as wgl; |
| import 'dart:typed_data'; |
| import "../../../testcommon.dart"; |
| import "resources/webgl-test.dart"; |
| import "resources/webgl-test-utils.dart" as wtu; |
| import "../../../../Utils/async_utils.dart"; |
| import "pwd.dart"; |
| |
| main() { |
| document.body.setInnerHtml(''' |
| <canvas id="example" width="16" height="16" style="width: 16px; height: 16px;"></canvas> |
| <div id="console"></div> |
| ''', treeSanitizer: new NullTreeSanitizer()); |
| |
| debug("This test isn't appropriate to include in the WebGL conformance suite, since the browser's behavior when applying a color profile can't be guaranteed."); |
| var canvas = document.getElementById("example"); |
| var gl = wtu.create3DContext(canvas); |
| var program = wtu.setupTexturedQuad(gl); |
| |
| glErrorShouldBe(gl, wgl.NO_ERROR, "Should be no errors from setup."); |
| |
| var imgURLs = [ |
| '$root/resources/tan-1x1-with-alpha.png' |
| ]; |
| |
| runTests(imgs) { |
| // pixelStorei defaults are UNPACK_PREMULTIPLY_ALPHA_WEBGL=false, UNPACK_COLORSPACE_CONVERSION_WEBGL=BROWSER_DEFAULT_WEBGL. |
| var loc = gl.getUniformLocation(program, "tex"); |
| gl.uniform1i(loc, 0); |
| |
| gl.disable(wgl.BLEND); |
| gl.disable(wgl.DEPTH_TEST); |
| |
| var width = canvas.width; |
| var height = canvas.height; |
| |
| checkPixelRange(buf, x, y, color, allowedRange) { |
| var off = (y * width + x) * 4; |
| var actual = buf.sublist(off,off+4); |
| var msg = "pixel $x, $y should be within $allowedRange units of " + |
| color.join(",") + " was " + |
| actual.join(","); |
| for (var ii = 0; ii < 4; ++ii) { |
| if (abs(buf[off + ii] - color[ii]) > allowedRange) { |
| testFailed(msg); |
| return; |
| } |
| } |
| testPassed(msg); |
| } |
| |
| var tex = gl.createTexture(); |
| gl.bindTexture(wgl.TEXTURE_2D, tex); |
| gl.texParameteri(wgl.TEXTURE_2D, wgl.TEXTURE_WRAP_S, wgl.CLAMP_TO_EDGE); |
| gl.texParameteri(wgl.TEXTURE_2D, wgl.TEXTURE_WRAP_T, wgl.CLAMP_TO_EDGE); |
| gl.texParameteri(wgl.TEXTURE_2D, wgl.TEXTURE_MIN_FILTER, wgl.NEAREST); |
| gl.texParameteri(wgl.TEXTURE_2D, wgl.TEXTURE_MAG_FILTER, wgl.NEAREST); |
| |
| var buf = new Uint8List(width * height * 4); |
| |
| gl.texImage2D(wgl.TEXTURE_2D, 0, wgl.RGBA, wgl.RGBA, wgl.UNSIGNED_BYTE, |
| imgs['$root/resources/tan-1x1-with-alpha.png']); |
| glErrorShouldBe(gl, wgl.NO_ERROR, "Should be no errors from setup"); |
| wtu.drawQuad(gl); |
| gl.readPixels(0, 0, width, height, wgl.RGBA, wgl.UNSIGNED_BYTE, buf); |
| // This generous range is still enough to catch the regression. |
| checkPixelRange(buf, 0, 0, [163, 126, 94, 129], 20); |
| asyncEnd(); |
| } |
| |
| asyncStart(); |
| |
| wtu.loadImagesAsync(imgURLs, runTests); |
| } |