| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>Texture upload with color profile</title> |
| <script src="../../../resources/js-test.js"></script> |
| <script src="resources/webgl-test.js"></script> |
| <script src="resources/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <canvas id="example" width="16" height="16" style="width: 16px; height: 16px;"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| description("Test that applying a color profile to a texture with separate alpha doesn't destroy the texture."); |
| debug("") |
| 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 wtu = WebGLTestUtils; |
| var canvas = document.getElementById("example"); |
| var gl = wtu.create3DContext(canvas); |
| var program = wtu.setupTexturedQuad(gl); |
| |
| glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup."); |
| |
| var imgURLs = [ |
| 'resources/tan-1x1-with-alpha.png' |
| ]; |
| |
| wtu.loadImagesAsync(imgURLs, runTests); |
| |
| function 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(gl.BLEND); |
| gl.disable(gl.DEPTH_TEST); |
| |
| var width = canvas.width; |
| var height = canvas.height; |
| |
| function checkPixelRange(buf, x, y, color, allowedRange) { |
| var off = (y * width + x) * 4; |
| var msg = "pixel " + x + ", " + y + " should be within " + |
| allowedRange + " units of " + |
| color[0] + ", " + |
| color[1] + ", " + |
| color[2] + ", " + |
| color[3]; |
| var subMsg = " was " + |
| buf[off + 0] + ", " + |
| buf[off + 1] + ", " + |
| buf[off + 2] + ", " + |
| buf[off + 3]; |
| // When running in WebKit's test harness, we don't want to print the |
| // pixel value when the test passes, because different machines might |
| // have different results and we record the text output. |
| var inDumpRenderTree = window.testRunner; |
| for (var ii = 0; ii < 4; ++ii) { |
| if (Math.abs(buf[off + ii] - color[ii]) > allowedRange) { |
| testFailed(msg + subMsg); |
| return; |
| } |
| } |
| testPassed(msg + (inDumpRenderTree ? "" : subMsg)); |
| } |
| |
| var tex = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex); |
| 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); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); |
| |
| var buf = new Uint8Array(width * height * 4); |
| |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, |
| imgs['resources/tan-1x1-with-alpha.png']); |
| glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup"); |
| wtu.drawQuad(gl); |
| gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| // This generous range is still enough to catch the regression. |
| checkPixelRange(buf, 0, 0, [163, 126, 94, 129], 20); |
| |
| debug(""); |
| } |
| </script> |
| </body> |
| </html> |
