| <html> |
| <head> |
| <script src="../../js/resources/js-test-pre.js"></script> |
| <script src="resources/webgl-test.js"></script> |
| <script src="resources/webgl-test-utils.js"></script> |
| <script> |
| var wtu = WebGLTestUtils; |
| var gl = null; |
| var textureLoc = null; |
| |
| function init() |
| { |
| if (window.initNonKhronosFramework) { |
| window.initNonKhronosFramework(true); |
| } |
| |
| description('Verify texImage2D and texSubImage2D code paths taking Images'); |
| |
| var canvas = document.getElementById("example"); |
| gl = wtu.create3DContext(canvas); |
| var program = wtu.setupTexturedQuad(gl); |
| |
| gl.clearColor(0,0,0,1); |
| gl.clearDepth(1); |
| |
| textureLoc = gl.getUniformLocation(gl.program, "tex"); |
| |
| wtu.loadTexture(gl, "resources/red-green.png", runTest); |
| } |
| |
| // These two declarations need to be global for "shouldBe" to see them |
| var buf = null; |
| var idx = 0; |
| var pixel = [0, 0, 0]; |
| var correctColor = null; |
| |
| function runOneIteration(image, useTexSubImage2D, flipY, topColor, bottomColor) |
| { |
| debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') + |
| ' with flipY=' + flipY); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| // Disable any writes to the alpha channel |
| 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, false); |
| // Upload the image into the texture |
| if (useTexSubImage2D) { |
| // Initialize the texture to black first |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, image.width, image.height, 0, |
| gl.RGBA, gl.UNSIGNED_BYTE, null); |
| gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, image); |
| } else { |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image); |
| } |
| |
| // Point the uniform sampler to texture unit 0 |
| gl.uniform1i(textureLoc, 0); |
| // Draw the triangles |
| wtu.drawQuad(gl, [0, 0, 0, 255]); |
| // Check a few pixels near the top and bottom and make sure they have |
| // the right color. |
| debug("Checking lower left corner"); |
| wtu.checkCanvasRect(gl, 4, 4, 2, 2, bottomColor, |
| "shouldBe " + bottomColor); |
| debug("Checking upper left corner"); |
| wtu.checkCanvasRect(gl, 4, gl.canvas.height - 8, 2, 2, topColor, |
| "shouldBe " + topColor); |
| } |
| |
| function runTest(image) |
| { |
| var red = [255, 0, 0]; |
| var green = [0, 255, 0]; |
| runOneIteration(image, false, true, red, green); |
| runOneIteration(image, false, false, green, red); |
| runOneIteration(image, true, true, red, green); |
| runOneIteration(image, true, false, green, red); |
| var epilogue = document.createElement("script"); |
| epilogue.onload = finish; |
| epilogue.src = "../../js/resources/js-test-post.js"; |
| document.body.appendChild(epilogue); |
| } |
| |
| function finish() { |
| if (window.nonKhronosFrameworkNotifyDone) { |
| window.nonKhronosFrameworkNotifyDone(); |
| } |
| } |
| </script> |
| </head> |
| <body onload="init()"> |
| <canvas id="example" width="32px" height="32px"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| </body> |
| </html> |
| |
| |
