| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Test toDataURL to JPEG on a non-premultipledAlpha WebGL context.</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> |
| <div id="description"></div><div id="console"></div> |
| <script> |
| var wtu = WebGLTestUtils; |
| |
| description("Test toDataURL on a non-premultipledAlpha WebGL context."); |
| var canvas = document.createElement("canvas"); |
| var gl = wtu.create3DContext(canvas, { premultipliedAlpha: false, preserveDrawingBuffer: true }); |
| shouldBeUndefined('gl.getContextAttributes().premultipledAlpha'); |
| shouldBeTrue('gl.getContextAttributes().preserveDrawingBuffer'); |
| |
| var program = wtu.setupTexturedQuad(gl); |
| |
| glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup."); |
| |
| debug(""); |
| debug("Fill the WebGL canvas with solid white at 50% transparency.") |
| var tex = gl.createTexture(); |
| wtu.fillTexture(gl, tex, 2, 2, [255, 255, 255, 128], 0); |
| var loc = gl.getUniformLocation(program, "tex"); |
| gl.uniform1i(loc, 0); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR); |
| 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); |
| |
| wtu.drawQuad(gl); |
| glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from drawing."); |
| |
| debug("Convert to a JPEG data URL.") |
| var imageUrl = canvas.toDataURL("image/jpeg"); |
| shouldBeTrue('imageUrl && imageUrl.length > 0'); |
| var image = document.createElement("img"); |
| image.addEventListener("load", function() { |
| debug("Append the image to the document.") |
| document.body.appendChild(image); |
| finishJSTest(); |
| }, false); |
| image.src = imageUrl; |
| |
| |
| </script> |
| </body> |
| </html> |
