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