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Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL2 texture unpack parameters with FLIP_Y / PREMULTIPLY_ALPHA conformance test.</title>
<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
<script src="../../../js/js-test-pre.js"></script>
<script src="../../../js/webgl-test-utils.js"></script>
</head>
<body>
<canvas id="example" width="4" height="4"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
var wtu = WebGLTestUtils;
var __verbose__ = false;
// Some drivers (for example, NVIDIA Linux) incorrectly require padding for
// the last row. The below flag is only for testing convenience. Browsers should
// work around the bug.
var __apply_alignment_workaround__ = false;
function setupArrayBuffer(size, initData) {
var array = new Uint8Array(size);
if (initData) {
for (var ii = 0; ii < size; ++ii) {
array[ii] = ii % 255;
}
}
return array;
}
function calculatePaddingBytes(bytesPerPixel, alignment, width) {
var padding = 0;
switch (alignment) {
case 1:
case 2:
case 4:
case 8:
padding = (bytesPerPixel * width) % alignment;
if (padding > 0)
padding = alignment - padding;
return padding;
default:
testFailed("should not reach here");
return;
}
}
function computeImageSizes2D(width, height, testCase) {
// Assume RGBA8/UNSIGNED_BYTE
var bytesPerPixel = 4;
var actualWidth = testCase.rowLength == 0 ? width : testCase.rowLength;
var padding = calculatePaddingBytes(bytesPerPixel, testCase.alignment, actualWidth);
var bytesPerRow = actualWidth * bytesPerPixel + padding;
var bytesLastRow = bytesPerPixel * width;
var size = bytesPerRow * (height - 1) + bytesLastRow;
var skipSize = 0;
if (testCase.skipPixels > 0)
skipSize += bytesPerPixel * testCase.skipPixels;
if (testCase.skipRows > 0)
skipSize += bytesPerRow * testCase.skipRows;
return {size: size,
bytesPerRow: bytesPerRow,
bytesLastRow: bytesLastRow,
padding: padding,
skipSize: skipSize,
totalSize: size + skipSize};
}
function copyData(srcData, srcIndex, dstData, dstIndex, size, premultiply_alpha) {
for (var ii = 0; ii < size / 4; ++ii) {
var factor = 1.0;
if (premultiply_alpha)
factor = srcData[srcIndex + ii * 4 + 3] / 255.0;
dstData[dstIndex + ii * 4] = srcData[srcIndex + ii * 4] * factor;
dstData[dstIndex + ii * 4 + 1] = srcData[srcIndex + ii * 4 + 1] * factor;
dstData[dstIndex + ii * 4 + 2] = srcData[srcIndex + ii * 4 + 2] * factor;
dstData[dstIndex + ii * 4 + 3] = srcData[srcIndex + ii * 4 + 3];
}
}
function unpackPixels(srcData, width, height, imageSizes, flip_y, premultiply_alpha) {
var bytesPerPixel = 4;
var unpackedSize = width * height * bytesPerPixel;
var dstData = setupArrayBuffer(unpackedSize, false);
var srcIndex = imageSizes.skipSize;
var dstIndex = 0;
var inc = width * bytesPerPixel;
if (flip_y)
dstIndex += (height - 1) * inc;
for (var y = 0; y < height; ++y) {
copyData(srcData, srcIndex, dstData, dstIndex, width * bytesPerPixel, premultiply_alpha);
srcIndex += imageSizes.bytesPerRow;
if (flip_y)
dstIndex -= inc;
else
dstIndex += inc;
}
if (flip_y)
dstIndex += height * inc;
return dstData;
}
function getPixelsFromTexture2D(gl, tex, xoffset, yoffset, width, height) {
var fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
var bytesPerReadbackPixel = 4;
var readbackBuffer = setupArrayBuffer(width * height * bytesPerReadbackPixel, false);
gl.readPixels(xoffset, yoffset, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readbackBuffer);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "read back texture pixels should succeed");
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
gl.deleteFramebuffer(fbo);
return readbackBuffer;
}
function comparePixels(buffer1, buffer2, tolerance) {
if (buffer1.length != buffer2.length || buffer1.length % 4 != 0) {
testFailed("compare pixels: invalid buffer size");
return;
}
var count = 0;
for (var ii = 0; ii < buffer1.length / 4; ++ii) {
var distance = 0;
for (var jj = 0; jj < 4; ++jj) {
var diff = buffer1[ii * 4 + jj] - buffer2[ii * 4 + jj];
distance += diff * diff;
}
if (Math.sqrt(diff) > tolerance) {
if (__verbose__) {
debug("Pixel " + ii + ": expected (" +
[buffer1[ii * 4], buffer1[ii * 4 + 1], buffer1[ii * 4 + 2], buffer1[ii * 4 + 3]] + "), got (" +
[buffer2[ii * 4], buffer2[ii * 4 + 1], buffer2[ii * 4 + 2], buffer2[ii * 4 + 3]] + ")");
}
count++;
}
}
if (count > 0) {
testFailed("compare pixels: " + count + " pixels differ");
} else {
testPassed("compare pixels: as expected");
}
}
function runTestIteration2D(gl, testCase, flip_y, premultiply_alpha) {
debug("");
debug("Texture upload with : flip_y = " + flip_y + ", premultiply_alpha = " + premultiply_alpha +
", alignment = " + testCase.alignment + ", rowLength = " + testCase.rowLength +
", skipPixels = " + testCase.skipPixels + ", skipRows = " + testCase.skipRows);
debug("TexImage2D : size = (" + testCase.width + ", " + testCase.height + ")");
gl.pixelStorei(gl.UNPACK_ALIGNMENT, testCase.alignment);
gl.pixelStorei(gl.UNPACK_ROW_LENGTH, testCase.rowLength);
gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, testCase.skipPixels);
gl.pixelStorei(gl.UNPACK_SKIP_ROWS, testCase.skipRows);
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flip_y);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiply_alpha);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Set up pixel store parameters should succeed");
var tol = 3;
var tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
var imageSizes = computeImageSizes2D(testCase.width, testCase.height, testCase);
var bufferSize = imageSizes.totalSize;
var array;
// Verify buffer with less than enough size will fail.
array = setupArrayBuffer(bufferSize - 1, false);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, testCase.width, testCase.height, 0,
gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
if (__apply_alignment_workaround__)
bufferSize += imageSizes.padding;
array = setupArrayBuffer(bufferSize, true);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, testCase.width, testCase.height, 0,
gl.RGBA, gl.UNSIGNED_BYTE, array);
if (testCase.validUnpackParams2D) {
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D with correct buffer size should succeed");
} else {
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, testCase.width, testCase.height, 0,
gl.RGBA, gl.UNSIGNED_BYTE, null);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "unpack param constraints do not apply if no data are uploaded.");
return;
}
var buffer1 = unpackPixels(array, testCase.width, testCase.height, imageSizes, flip_y, premultiply_alpha);
var buffer2 = getPixelsFromTexture2D(gl, tex, 0, 0, testCase.width, testCase.height);
comparePixels(buffer1, buffer2, tol);
var subWidth = testCase.width - testCase.xoffset;
var subHeight = testCase.height - testCase.yoffset;
debug("TexSubImage2D : offset = (" + testCase.xoffset + ", " + testCase.yoffset +
"), size = (" + subWidth + ", " + subHeight + ")");
imageSizes = computeImageSizes2D(subWidth, subHeight, testCase);
bufferSize = imageSizes.totalSize;
array = setupArrayBuffer(bufferSize - 1, false);
gl.texSubImage2D(gl.TEXTURE_2D, 0, testCase.xoffset, testCase.yoffset,
subWidth, subHeight, gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
if (__apply_alignment_workaround__)
bufferSize += imageSizes.padding;
array = setupArrayBuffer(bufferSize, true);
gl.texSubImage2D(gl.TEXTURE_2D, 0, testCase.xoffset, testCase.yoffset, subWidth, subHeight,
gl.RGBA, gl.UNSIGNED_BYTE, array);
if (testCase.validUnpackParamsForSub2D) {
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D with correct buffer size should succeed");
} else {
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
return;
}
var buffer1 = unpackPixels(array, subWidth, subHeight, imageSizes, flip_y, premultiply_alpha);
var buffer2 = getPixelsFromTexture2D(
gl, tex, testCase.xoffset, testCase.yoffset, subWidth, subHeight);
comparePixels(buffer1, buffer2, tol);
gl.bindTexture(gl.TEXTURE_2D, null);
gl.deleteTexture(tex);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
}
function runTests(gl) {
var testCases = [
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 1, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 2, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 6, height: 7, xoffset: 2, yoffset: 3,
alignment: 4, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 8, xoffset: 2, yoffset: 3,
alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
// ROW_LENGTH == width
{ width: 10, height: 9, xoffset: 2, yoffset: 3,
alignment: 4, rowLength: 10, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
// ROW_LENGTH < width
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 1, rowLength: 4, skipPixels: 0, skipRows: 0,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 2, rowLength: 4, skipPixels: 0, skipRows: 0,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 4, rowLength: 4, skipPixels: 0, skipRows: 0,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 8, rowLength: 4, skipPixels: 0, skipRows: 0,
validUnpackParams2D: false },
// ROW_LENGTH > width
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 1, rowLength: 6, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 2, rowLength: 7, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 4, rowLength: 8, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 8, rowLength: 9, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
// IMAGE_HEIGHT == height
{ width: 6, height: 7, xoffset: 2, yoffset: 3,
alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
// IMAGE_HEIGHT < height
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 1, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 2, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 4, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
// IMAGE_HEIGHT > height
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 1, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 6, height: 7, xoffset: 2, yoffset: 2,
alignment: 2, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 7, height: 7, xoffset: 2, yoffset: 4,
alignment: 4, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 8, height: 7, xoffset: 2, yoffset: 3,
alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
// SKIP parameters
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 1, rowLength: 0, skipPixels: 10, skipRows: 0,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 2, rowLength: 0, skipPixels: 2, skipRows: 8,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 4, rowLength: 0, skipPixels: 3, skipRows: 5,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 8, rowLength: 0, skipPixels: 7, skipRows: 0,
validUnpackParams2D: false },
// all mixed.
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 1, rowLength: 6, skipPixels: 3, skipRows: 5,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 2, rowLength: 4, skipPixels: 7, skipRows: 2,
validUnpackParams2D: false },
{ width: 5, height: 7, xoffset: 2, yoffset: 3,
alignment: 4, rowLength: 10, skipPixels: 0, skipRows: 3,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
{ width: 1, height: 1, xoffset: 0, yoffset: 0,
alignment: 2, rowLength: 3, skipPixels: 3, skipRows: 5,
validUnpackParams2D: false },
{ width: 17, height: 6, xoffset: 12, yoffset: 3,
alignment: 2, rowLength: 4, skipPixels: 1, skipRows: 4,
validUnpackParams2D: false },
{ width: 8, height: 17, xoffset: 2, yoffset: 13,
alignment: 4, rowLength: 9, skipPixels: 0, skipRows: 3,
validUnpackParams2D: true, validUnpackParamsForSub2D: true },
];
var groups = [
// { flip_y: false, premultiply_alpha: false },
{ flip_y: true, premultiply_alpha: false },
{ flip_y: false, premultiply_alpha: true },
{ flip_y: true, premultiply_alpha: true },
];
for (var jj = 0; jj < groups.length; ++jj) {
var group = groups[jj];
for (var ii = 0; ii < testCases.length; ++ii) {
var testCase = testCases[ii];
runTestIteration2D(gl, testCase, group.flip_y, group.premultiply_alpha);
}
}
}
function runNegativeTests(gl) {
debug("");
debug("Test tex{Sub}Image2D from pbo fails with FLIP_Y = true or PREMULTIPLY_ALPHA = true");
var width = 16, height = 16, depth = 2;
// Restore default values.
gl.pixelStorei(gl.UNPACK_ALIGNMENT, 4);
gl.pixelStorei(gl.UNPACK_ROW_LENGTH, 0);
gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, 0);
gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, 0);
gl.pixelStorei(gl.UNPACK_SKIP_ROWS, 0);
gl.pixelStorei(gl.UNPACK_SKIP_IMAGES, 0);
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
var tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
var bufferSize = width * height * 4; // RGBA8
var buffer = gl.createBuffer();
gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize, gl.DYNAMIC_DRAW);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D from pbo works with default pixel store settings");
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D from pbo works with default pixel store settings");
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage2D from pbo with FLIP_Y=true should fail");
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage2D from pbo with FLIP_Y=true should fail");
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage2D from pbo with PREMULTIPLY_ALPHA=true should fail");
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage2D from pbo with PREMULTIPLY_ALPHA=true should fail");
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
debug("");
debug("Test tex{Sub}Image3D from pbo fails with FLIP_Y = true or PREMULTIPLY_ALPHA = true");
gl.deleteTexture(tex);
tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_3D, tex);
bufferSize = width * height * depth * 4; // RGBA8
gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize, gl.DYNAMIC_DRAW);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D from pbo works with default pixel store settings");
gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D from pbo works with default pixel store settings");
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from pbo with FLIP_Y=true should fail");
gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from pbo with FLIP_Y=true should fail");
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
debug("");
debug("Test tex{Sub}Image3D from client array fails with FLIP_Y = true or PREMULTIPLY_ALPHA = true");
gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, null);
gl.deleteBuffer(buffer);
buffer = null;
var array = setupArrayBuffer(bufferSize, false);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D from client array works with default pixel store settings");
gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D from client array works with default pixel store settings");
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from client array with FLIP_Y=true should fail");
gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from client array with FLIP_Y=true should fail");
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, array);
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
}
function runRegressionTests(gl) {
debug("");
debug("The following test serves as a regression test for crbug.com/774174");
var array = new Uint16Array(32);
gl.pixelStorei(gl.UNPACK_ROW_LENGTH, 4);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, 6);
var tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
gl.texSubImage2D(gl.TEXTURE_2D, 4, 7, 5, 8, 5, gl.RGB, gl.UNSIGNED_SHORT_5_5_5_1, array);
// At this point, the Chrome ASAN build used to crash.
testPassed("The regression test for crbug.com/774174 doesn't crash");
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Calling texSubImage2D without initializing the texture is illegal");
gl.pixelStorei(gl.UNPACK_ROW_LENGTH, 0);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
}
var gl = wtu.create3DContext("example", undefined, 2);
if (!gl) {
testFailed("Fail to get a WebGL context");
} else {
runTests(gl);
runNegativeTests(gl);
runRegressionTests(gl);
}
debug("");
var successfullyParsed = true;
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