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/*
** Copyright (c) 2014 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be included
** in all copies or substantial portions of the Materials.
**
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
function generateTest(pixelFormat, pixelType, prologue) {
var wtu = WebGLTestUtils;
var gl = null;
var successfullyParsed = false;
var init = function()
{
description('Verify texImage2D and texSubImage2D code paths taking webgl canvas elements (' + pixelFormat + '/' + pixelType + ')');
gl = wtu.create3DContext("example");
if (!prologue(gl)) {
finishTest();
return;
}
var program = wtu.setupTexturedQuad(gl);
gl.clearColor(0,0,0,1);
gl.clearDepth(1);
runTest();
}
function setCanvasToRedGreen(ctx) {
var width = ctx.canvas.width;
var height = ctx.canvas.height;
var halfHeight = Math.floor(height / 2);
ctx.viewport(0, 0, width, height);
ctx.enable(ctx.SCISSOR_TEST);
ctx.scissor(0, 0, width, halfHeight);
ctx.clearColor(1.0, 0, 0, 1.0);
ctx.clear(ctx.COLOR_BUFFER_BIT);
ctx.scissor(0, halfHeight, width, height - halfHeight);
ctx.clearColor(0.0, 1.0, 0, 1.0);
ctx.clear(ctx.COLOR_BUFFER_BIT);
ctx.disable(ctx.SCISSOR_TEST);
}
function setCanvasTo257x257(ctx) {
ctx.canvas.width = 257;
ctx.canvas.height = 257;
setCanvasToRedGreen(ctx);
}
function setCanvasTo1x2(ctx) {
ctx.canvas.width = 1;
ctx.canvas.height = 2;
setCanvasToRedGreen(ctx);
}
function runOneIteration(canvas, useTexSubImage2D, flipY, opt_texture)
{
debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
' with flipY=' + flipY + ' canvas size: ' + canvas.width + 'x' + canvas.height +
' with red-green');
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
if (!opt_texture) {
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);
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);
} else {
var texture = opt_texture;
}
// Set up pixel store parameters
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
// Upload the image into the texture
if (useTexSubImage2D) {
// Initialize the texture to black first
gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], canvas.width, canvas.height, 0,
gl[pixelFormat], gl[pixelType], null);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl[pixelFormat], gl[pixelType], canvas);
} else {
gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], gl[pixelFormat], gl[pixelType], canvas);
}
// Draw the triangles
wtu.clearAndDrawUnitQuad(gl, [0, 255, 0, 255]);
var width = gl.canvas.width;
var height = gl.canvas.height;
var halfHeight = Math.floor(height / 2);
var top = flipY ? (height - halfHeight) : 0;
var bottom = flipY ? 0 : (height - halfHeight);
// Check the top and bottom halves and make sure they have the right color.
var red = [255, 0, 0];
var green = [0, 255, 0];
debug("Checking " + (flipY ? "top" : "bottom"));
wtu.checkCanvasRect(gl, 0, bottom, width, halfHeight, red,
"shouldBe " + red);
debug("Checking " + (flipY ? "bottom" : "top"));
wtu.checkCanvasRect(gl, 0, top, width, halfHeight, green,
"shouldBe " + green);
if (false) {
var ma = wtu.makeImageFromCanvas(canvas);
document.getElementById("console").appendChild(ma);
var m = wtu.makeImageFromCanvas(gl.canvas);
document.getElementById("console").appendChild(m);
document.getElementById("console").appendChild(document.createElement("hr"));
}
return texture;
}
function runTest()
{
var ctx = wtu.create3DContext();
var canvas = ctx.canvas;
var count = 4;
var caseNdx = 0;
var cases = [
{ sub: false, flipY: true, init: setCanvasTo1x2 },
{ sub: false, flipY: false },
{ sub: true, flipY: true },
{ sub: true, flipY: false },
{ sub: false, flipY: true, init: setCanvasTo257x257 },
{ sub: false, flipY: false },
{ sub: true, flipY: true },
{ sub: true, flipY: false },
];
var texture;
function runNextTest() {
var c = cases[caseNdx];
if (c.init) {
c.init(ctx);
}
texture = runOneIteration(canvas, c.sub, c.flipY, texture);
// for the first 2 iterations always make a new texture.
if (count > 2) {
texture = undefined;
}
++caseNdx;
if (caseNdx == cases.length) {
caseNdx = 0;
--count;
if (!count) {
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
finishTest();
return;
}
}
wtu.waitForComposite(runNextTest);
}
runNextTest();
}
return init;
}
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