blob: e7ff8b649e5f5f5cc59da2e0a1a533a38fc17df3 [file] [log] [blame]
function generateTest(pixelFormat, pixelType, pathToTestRoot, prologue) {
var wtu = WebGLTestUtils;
var gl = null;
var textureLoc = null;
var successfullyParsed = false;
var imgCanvas;
var red = [255, 0, 0];
var green = [0, 255, 0];
var init = function()
{
if (window.initNonKhronosFramework) {
window.initNonKhronosFramework(true);
}
description('Verify texImage2D and texSubImage2D code paths taking image 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);
textureLoc = gl.getUniformLocation(program, "tex");
wtu.loadTexture(gl, pathToTestRoot + "/resources/red-green.png", runTest);
}
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);
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], image.width, image.height, 0,
gl[pixelFormat], gl[pixelType], null);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl[pixelFormat], gl[pixelType], image);
} else {
gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], gl[pixelFormat], gl[pixelType], 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 runTestOnImage(image) {
runOneIteration(image, false, true, red, green);
runOneIteration(image, false, false, green, red);
runOneIteration(image, true, true, red, green);
runOneIteration(image, true, false, green, red);
}
function runTest(image)
{
runTestOnImage(image);
imgCanvas = document.createElement("canvas");
imgCanvas.width = 1;
imgCanvas.height = 2;
var imgCtx = imgCanvas.getContext("2d");
var imgData = imgCtx.createImageData(1, 2);
imgData.data[0] = red[0];
imgData.data[1] = red[1];
imgData.data[2] = red[2];
imgData.data[3] = 255;
imgData.data[4] = green[0];
imgData.data[5] = green[1];
imgData.data[6] = green[2];
imgData.data[7] = 255;
imgCtx.putImageData(imgData, 0, 0);
// apparently Image is different than <img>.
var newImage = new Image();
newImage.onload = function() {
runTest2(newImage);
};
newImage.src = imgCanvas.toDataURL();
}
function runTest2(image) {
runTestOnImage(image);
var newImage = document.createElement("img");
newImage.onload = function() {
runTest3(newImage);
};
newImage.src = imgCanvas.toDataURL();
}
function runTest3(image) {
runTestOnImage(image);
glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
finishTest();
}
return init;
}