240 lines
9.4 KiB
JavaScript
240 lines
9.4 KiB
JavaScript
/*
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Copyright (c) 2019 The Khronos Group Inc.
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Use of this source code is governed by an MIT-style license that can be
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found in the LICENSE.txt file.
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*/
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function generateTest(internalFormat, pixelFormat, pixelType, prologue, resourcePath, defaultContextVersion) {
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var wtu = WebGLTestUtils;
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var tiu = TexImageUtils;
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var gl = null;
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var successfullyParsed = false;
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var imageData = null;
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var blackColor = [0, 0, 0];
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var redColor = [255, 0, 0];
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var greenColor = [0, 255, 0];
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function init()
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{
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description('Verify texImage2D and texSubImage2D code paths taking ImageData (' + internalFormat + '/' + pixelFormat + '/' + pixelType + ')');
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// Set the default context version while still allowing the webglVersion URL query string to override it.
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wtu.setDefault3DContextVersion(defaultContextVersion);
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gl = wtu.create3DContext("example");
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if (!prologue(gl)) {
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finishTest();
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return;
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}
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switch (gl[pixelFormat]) {
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case gl.RED:
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case gl.RED_INTEGER:
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greenColor = [0, 0, 0];
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break;
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case gl.LUMINANCE:
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case gl.LUMINANCE_ALPHA:
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redColor = [255, 255, 255];
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greenColor = [0, 0, 0];
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break;
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case gl.ALPHA:
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redColor = [0, 0, 0];
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greenColor = [0, 0, 0];
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break;
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default:
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break;
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}
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gl.clearColor(0,0,0,1);
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gl.clearDepth(1);
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gl.disable(gl.BLEND);
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var canvas2d = document.getElementById("texcanvas");
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var context2d = canvas2d.getContext("2d");
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imageData = context2d.createImageData(2, 2);
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var data = imageData.data;
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data[0] = 255;
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data[1] = 0;
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data[2] = 0;
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data[3] = 255;
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data[4] = 255;
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data[5] = 0;
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data[6] = 0;
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data[7] = 0;
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data[8] = 0;
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data[9] = 255;
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data[10] = 0;
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data[11] = 255;
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data[12] = 0;
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data[13] = 255;
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data[14] = 0;
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data[15] = 0;
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runTest();
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}
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function runOneIteration(useTexSubImage2D, flipY, premultiplyAlpha,
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sourceSubRectangle, expected,
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bindingTarget, program)
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{
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sourceSubRectangleString = '';
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if (sourceSubRectangle) {
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sourceSubRectangleString = ', sourceSubRectangle=' + sourceSubRectangle;
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}
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debug('');
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debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
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' with flipY=' + flipY + ' and premultiplyAlpha=' + premultiplyAlpha +
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', bindingTarget=' + (bindingTarget == gl.TEXTURE_2D ? 'TEXTURE_2D' : 'TEXTURE_CUBE_MAP') +
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sourceSubRectangleString);
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var loc;
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if (bindingTarget == gl.TEXTURE_CUBE_MAP) {
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loc = gl.getUniformLocation(program, "face");
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}
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gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
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// Enable writes to the RGBA channels
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gl.colorMask(1, 1, 1, 0);
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var texture = gl.createTexture();
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// Bind the texture to texture unit 0
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gl.bindTexture(bindingTarget, texture);
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// Set up texture parameters
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gl.texParameteri(bindingTarget, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
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gl.texParameteri(bindingTarget, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
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// Set up pixel store parameters
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gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
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gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha);
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var targets = [gl.TEXTURE_2D];
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if (bindingTarget == gl.TEXTURE_CUBE_MAP) {
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targets = [gl.TEXTURE_CUBE_MAP_POSITIVE_X,
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gl.TEXTURE_CUBE_MAP_NEGATIVE_X,
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gl.TEXTURE_CUBE_MAP_POSITIVE_Y,
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gl.TEXTURE_CUBE_MAP_NEGATIVE_Y,
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gl.TEXTURE_CUBE_MAP_POSITIVE_Z,
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gl.TEXTURE_CUBE_MAP_NEGATIVE_Z];
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}
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// Handle the source sub-rectangle if specified (WebGL 2.0 only)
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if (sourceSubRectangle) {
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gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, sourceSubRectangle[0]);
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gl.pixelStorei(gl.UNPACK_SKIP_ROWS, sourceSubRectangle[1]);
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}
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// Upload the image into the texture
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for (var tt = 0; tt < targets.length; ++tt) {
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if (sourceSubRectangle) {
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if (useTexSubImage2D) {
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// Initialize the texture to black first
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gl.texImage2D(targets[tt], 0, gl[internalFormat],
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sourceSubRectangle[2], sourceSubRectangle[3], 0,
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gl[pixelFormat], gl[pixelType], null);
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gl.texSubImage2D(targets[tt], 0, 0, 0,
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sourceSubRectangle[2], sourceSubRectangle[3],
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gl[pixelFormat], gl[pixelType], imageData);
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} else {
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gl.texImage2D(targets[tt], 0, gl[internalFormat],
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sourceSubRectangle[2], sourceSubRectangle[3], 0,
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gl[pixelFormat], gl[pixelType], imageData);
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}
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} else {
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if (useTexSubImage2D) {
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// Initialize the texture to black first
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gl.texImage2D(targets[tt], 0, gl[internalFormat], imageData.width, imageData.height, 0,
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gl[pixelFormat], gl[pixelType], null);
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gl.texSubImage2D(targets[tt], 0, 0, 0, gl[pixelFormat], gl[pixelType], imageData);
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} else {
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gl.texImage2D(targets[tt], 0, gl[internalFormat], gl[pixelFormat], gl[pixelType], imageData);
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}
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}
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}
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if (sourceSubRectangle) {
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gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, 0);
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gl.pixelStorei(gl.UNPACK_SKIP_ROWS, 0);
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}
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var width = gl.canvas.width;
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var halfWidth = Math.floor(width / 2);
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var height = gl.canvas.height;
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var halfHeight = Math.floor(height / 2);
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var top = 0;
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var bottom = height - halfHeight;
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var left = 0;
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var right = width - halfWidth;
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var tl, tr, bl, br;
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if (expected.length == 1) {
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tl = tr = bl = br = expected[0];
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} else {
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tl = expected[0];
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tr = expected[1];
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bl = expected[2];
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br = expected[3];
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}
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for (var tt = 0; tt < targets.length; ++tt) {
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if (bindingTarget == gl.TEXTURE_CUBE_MAP) {
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gl.uniform1i(loc, targets[tt]);
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}
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// Draw the triangles
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wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
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// Check the top pixel and bottom pixel and make sure they have
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// the right color.
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wtu.checkCanvasRect(gl, left, top, halfWidth, halfHeight, tl, "shouldBe " + tl);
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wtu.checkCanvasRect(gl, right, top, halfWidth, halfHeight, tr, "shouldBe " + tr);
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wtu.checkCanvasRect(gl, left, bottom, halfWidth, halfHeight, bl, "shouldBe " + bl);
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wtu.checkCanvasRect(gl, right, bottom, halfWidth, halfHeight, br, "shouldBe " + br);
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}
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}
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function runTest()
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{
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var program = tiu.setupTexturedQuad(gl, internalFormat);
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runTestOnBindingTarget(gl.TEXTURE_2D, program);
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program = tiu.setupTexturedQuadWithCubeMap(gl, internalFormat);
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runTestOnBindingTarget(gl.TEXTURE_CUBE_MAP, program);
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wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
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finishTest();
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}
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function runTestOnBindingTarget(bindingTarget, program) {
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var k = blackColor;
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var r = redColor;
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var g = greenColor;
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var cases = [
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{ expected: [r, r, g, g], flipY: false, premultiplyAlpha: false, sub: false },
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{ expected: [r, r, g, g], flipY: false, premultiplyAlpha: false, sub: true },
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{ expected: [r, k, g, k], flipY: false, premultiplyAlpha: true, sub: false },
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{ expected: [r, k, g, k], flipY: false, premultiplyAlpha: true, sub: true },
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{ expected: [g, g, r, r], flipY: true, premultiplyAlpha: false, sub: false },
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{ expected: [g, g, r, r], flipY: true, premultiplyAlpha: false, sub: true },
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{ expected: [g, k, r, k], flipY: true, premultiplyAlpha: true, sub: false },
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{ expected: [g, k, r, k], flipY: true, premultiplyAlpha: true, sub: true },
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];
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if (wtu.getDefault3DContextVersion() > 1) {
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var morecases = [];
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// Make 2 copies of the original case: top left and bottom right 1x1 rectangles
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for (var i = 0; i < cases.length; i++) {
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for (var subX = 0; subX <= 1; subX++) {
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var subY = subX == 0 ? 1 : 0;
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// shallow-copy cases[i] into newcase
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var newcase = Object.assign({}, cases[i]);
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newcase.expected = [cases[i].expected[subY * 2 + subX]];
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newcase.sourceSubRectangle = [subX, subY, 1, 1];
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morecases.push(newcase);
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}
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}
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cases = cases.concat(morecases);
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}
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for (var i in cases) {
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runOneIteration(cases[i].sub, cases[i].flipY, cases[i].premultiplyAlpha,
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cases[i].sourceSubRectangle, cases[i].expected,
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bindingTarget, program);
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}
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}
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return init;
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}
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