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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 realRedColor = [255, 0, 0];
var realGreenColor = [0, 255, 0];
var realBlueColor = [0, 0, 255];
var realCyanColor = [0, 255, 255];
var redColor = [255, 0, 0];
var greenColor = [0, 255, 0];
var blueColor = [0, 0, 255];
var cyanColor = [0, 255, 255];
function init()
{
description('Verify texImage3D and texSubImage3D code paths taking a sub-rectangle of a canvas (' + 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];
blueColor = [0, 0, 0];
cyanColor = [0, 0, 0];
break;
case gl.RG:
case gl.RG_INTEGER:
blueColor = [0, 0, 0];
cyanColor = [0, 255, 0];
break;
default:
break;
}
gl.clearColor(0,0,0,1);
gl.clearDepth(1);
var canvas2d = document.createElement('canvas');
runTest(canvas2d, setupSourceCanvas2D, '2D-rendered canvas');
var canvasWebGL = document.createElement('canvas');
runTest(canvasWebGL, setupSourceCanvasWebGL, 'WebGL-rendered canvas');
finishTest();
}
function uploadCanvasToTexture(canvas, useTexSubImage3D, flipY, bindingTarget,
depth, sourceSubRectangle, unpackImageHeight)
{
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(bindingTarget, texture);
// Set up texture parameters
gl.texParameteri(bindingTarget, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(bindingTarget, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(bindingTarget, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(bindingTarget, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texParameteri(bindingTarget, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE);
// 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);
var uploadWidth = canvas.width;
var uploadHeight = canvas.height;
if (sourceSubRectangle) {
gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, sourceSubRectangle[0]);
gl.pixelStorei(gl.UNPACK_SKIP_ROWS, sourceSubRectangle[1]);
uploadWidth = sourceSubRectangle[2];
uploadHeight = sourceSubRectangle[3];
}
if (unpackImageHeight) {
gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, unpackImageHeight);
}
// Upload the image into the texture
if (useTexSubImage3D) {
// Initialize the texture to black first
gl.texImage3D(bindingTarget, 0, gl[internalFormat], uploadWidth, uploadHeight, depth, 0,
gl[pixelFormat], gl[pixelType], null);
gl.texSubImage3D(bindingTarget, 0, 0, 0, 0, uploadWidth, uploadHeight, depth,
gl[pixelFormat], gl[pixelType], canvas);
} else {
gl.texImage3D(bindingTarget, 0, gl[internalFormat], uploadWidth, uploadHeight, depth, 0,
gl[pixelFormat], gl[pixelType], canvas);
}
gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, 0);
gl.pixelStorei(gl.UNPACK_SKIP_ROWS, 0);
gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, 0);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors from texture upload");
}
function fillStyle2D(ctx, color) {
ctx.fillStyle = 'rgb(' + color[0] + ', ' + color[1] + ', ' + color[2] + ')';
}
function setupSourceCanvas2D(canvas) {
var width = canvas.width;
var height = canvas.height;
var halfWidth = Math.floor(width / 2);
var halfHeight = Math.floor(height / 2);
var ctx = canvas.getContext('2d');
// Always use the same pattern for this test: four quadrants:
// red green
// blue cyan
// Handle odd-sized canvases
fillStyle2D(ctx, realRedColor);
ctx.fillRect(0, 0, halfWidth, halfHeight);
fillStyle2D(ctx, realGreenColor);
ctx.fillRect(halfWidth, 0, width - halfWidth, halfHeight);
fillStyle2D(ctx, realBlueColor);
ctx.fillRect(0, halfHeight, halfWidth, height - halfHeight);
fillStyle2D(ctx, realCyanColor);
ctx.fillRect(halfWidth, halfHeight, width - halfWidth, height - halfHeight);
}
function clearColorWebGL(ctx, color) {
ctx.clearColor(color[0] / 255.0, color[1] / 255.0, color[2] / 255.0, 1.0);
ctx.clear(ctx.COLOR_BUFFER_BIT);
}
function setupSourceCanvasWebGL(canvas) {
var width = canvas.width;
var height = canvas.height;
var halfWidth = Math.floor(width / 2);
var halfHeight = Math.floor(height / 2);
var ctx = canvas.getContext('webgl');
// Always use the same pattern for this test: four quadrants:
// red green
// blue cyan
// Handle odd-sized canvases
ctx.viewport(0, 0, width, height);
ctx.enable(ctx.SCISSOR_TEST);
// OpenGL origin is lower-left
ctx.scissor(0, 0, halfWidth, halfHeight);
clearColorWebGL(ctx, realBlueColor);
ctx.scissor(halfWidth, 0, width - halfWidth, halfHeight);
clearColorWebGL(ctx, realCyanColor);
ctx.scissor(0, halfHeight, halfWidth, height - halfHeight);
clearColorWebGL(ctx, realRedColor);
ctx.scissor(halfWidth, halfHeight, width - halfWidth, height - halfHeight);
clearColorWebGL(ctx, realGreenColor);
}
function runOneIteration(canvas, useTexSubImage3D, flipY, bindingTarget,
depth, sourceSubRectangle, unpackImageHeight,
rTextureCoord, expectedColor, program,
canvasSize, canvasSetupFunction, sourceDescription)
{
debug('');
debug('Testing ' + sourceDescription + ' with ' +
(useTexSubImage3D ? 'texSubImage3D' : 'texImage3D') +
', flipY=' + flipY + ', bindingTarget=' +
(bindingTarget == gl.TEXTURE_3D ? 'TEXTURE_3D' : 'TEXTURE_2D_ARRAY') +
', sourceSubRectangle=' + sourceSubRectangle +
', depth=' + depth +
(unpackImageHeight ? ', unpackImageHeight=' + unpackImageHeight : '') +
', rTextureCoord=' + rTextureCoord);
// Initialize the contents of the source canvas.
var width = canvasSize[0];
var height = canvasSize[1];
var halfWidth = Math.floor(width / 2);
var halfHeight = Math.floor(height / 2);
canvas.width = width;
canvas.height = height;
canvasSetupFunction(canvas);
uploadCanvasToTexture(canvas, useTexSubImage3D, flipY, bindingTarget,
depth, sourceSubRectangle, unpackImageHeight);
var rCoordLocation = gl.getUniformLocation(program, 'uRCoord');
if (!rCoordLocation) {
testFailed('Shader incorrectly set up; couldn\'t find uRCoord uniform');
return;
}
gl.uniform1f(rCoordLocation, rTextureCoord);
// Draw the triangles
wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
// Check the rendered canvas
wtu.checkCanvasRect(gl, 0, 0, canvasSize[0], canvasSize[1], expectedColor, "shouldBe " + expectedColor);
}
function runTest(canvas, canvasSetupFunction, sourceDescription)
{
var cases = [
// Small canvas cases. Expected that these won't be
// GPU-accelerated in most browsers' implementations.
// No UNPACK_IMAGE_HEIGHT specified.
{ expected: redColor, flipY: false, size: [4, 4], subRect: [0, 0, 2, 2], depth: 2, rTextureCoord: 0.0 },
{ expected: blueColor, flipY: false, size: [4, 4], subRect: [0, 0, 2, 2], depth: 2, rTextureCoord: 1.0 },
{ expected: blueColor, flipY: true, size: [4, 4], subRect: [0, 0, 2, 2], depth: 2, rTextureCoord: 0.0 },
{ expected: redColor, flipY: true, size: [4, 4], subRect: [0, 0, 2, 2], depth: 2, rTextureCoord: 1.0 },
{ expected: greenColor, flipY: false, size: [4, 4], subRect: [2, 0, 2, 2], depth: 2, rTextureCoord: 0.0 },
{ expected: cyanColor, flipY: false, size: [4, 4], subRect: [2, 0, 2, 2], depth: 2, rTextureCoord: 1.0 },
{ expected: cyanColor, flipY: true, size: [4, 4], subRect: [2, 0, 2, 2], depth: 2, rTextureCoord: 0.0 },
{ expected: greenColor, flipY: true, size: [4, 4], subRect: [2, 0, 2, 2], depth: 2, rTextureCoord: 1.0 },
// Use UNPACK_IMAGE_HEIGHT to skip some pixels.
{ expected: redColor, flipY: false, size: [4, 4], subRect: [0, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 0.0 },
{ expected: blueColor, flipY: false, size: [4, 4], subRect: [0, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 1.0 },
{ expected: blueColor, flipY: true, size: [4, 4], subRect: [0, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 0.0 },
{ expected: redColor, flipY: true, size: [4, 4], subRect: [0, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 1.0 },
{ expected: greenColor, flipY: false, size: [4, 4], subRect: [2, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 0.0 },
{ expected: cyanColor, flipY: false, size: [4, 4], subRect: [2, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 1.0 },
{ expected: cyanColor, flipY: true, size: [4, 4], subRect: [2, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 0.0 },
{ expected: greenColor, flipY: true, size: [4, 4], subRect: [2, 0, 1, 1], depth: 2, unpackImageHeight: 2, rTextureCoord: 1.0 },
// Larger canvas cases. Expected that these will be
// GPU-accelerated in most browsers' implementations.
// Changes will be gladly accepted to trigger more
// browsers' heuristics to accelerate these canvases.
// No UNPACK_IMAGE_HEIGHT specified.
{ expected: redColor, flipY: false, size: [384, 384], subRect: [0, 0, 192, 192], depth: 2, rTextureCoord: 0.0 },
{ expected: blueColor, flipY: false, size: [384, 384], subRect: [0, 0, 192, 192], depth: 2, rTextureCoord: 1.0 },
{ expected: blueColor, flipY: true, size: [384, 384], subRect: [0, 0, 192, 192], depth: 2, rTextureCoord: 0.0 },
{ expected: redColor, flipY: true, size: [384, 384], subRect: [0, 0, 192, 192], depth: 2, rTextureCoord: 1.0 },
{ expected: greenColor, flipY: false, size: [384, 384], subRect: [192, 0, 192, 192], depth: 2, rTextureCoord: 0.0 },
{ expected: cyanColor, flipY: false, size: [384, 384], subRect: [192, 0, 192, 192], depth: 2, rTextureCoord: 1.0 },
{ expected: cyanColor, flipY: true, size: [384, 384], subRect: [192, 0, 192, 192], depth: 2, rTextureCoord: 0.0 },
{ expected: greenColor, flipY: true, size: [384, 384], subRect: [192, 0, 192, 192], depth: 2, rTextureCoord: 1.0 },
// Use UNPACK_IMAGE_HEIGHT to skip some pixels.
{ expected: redColor, flipY: false, size: [384, 384], subRect: [0, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 0.0 },
{ expected: blueColor, flipY: false, size: [384, 384], subRect: [0, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 1.0 },
{ expected: blueColor, flipY: true, size: [384, 384], subRect: [0, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 0.0 },
{ expected: redColor, flipY: true, size: [384, 384], subRect: [0, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 1.0 },
{ expected: greenColor, flipY: false, size: [384, 384], subRect: [192, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 0.0 },
{ expected: cyanColor, flipY: false, size: [384, 384], subRect: [192, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 1.0 },
{ expected: cyanColor, flipY: true, size: [384, 384], subRect: [192, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 0.0 },
{ expected: greenColor, flipY: true, size: [384, 384], subRect: [192, 0, 96, 96], depth: 2, unpackImageHeight: 192, rTextureCoord: 1.0 },
];
var program = tiu.setupTexturedQuadWith3D(gl, internalFormat);
for (var i in cases) {
runOneIteration(canvas, false, cases[i].flipY, gl.TEXTURE_3D,
cases[i].depth, cases[i].subRect,
cases[i].unpackImageHeight, cases[i].rTextureCoord,
cases[i].expected,
program, cases[i].size, canvasSetupFunction, sourceDescription);
runOneIteration(canvas, true, cases[i].flipY, gl.TEXTURE_3D,
cases[i].depth, cases[i].subRect,
cases[i].unpackImageHeight, cases[i].rTextureCoord,
cases[i].expected,
program, cases[i].size, canvasSetupFunction, sourceDescription);
}
program = tiu.setupTexturedQuadWith2DArray(gl, internalFormat);
for (var i in cases) {
runOneIteration(canvas, false, cases[i].flipY, gl.TEXTURE_2D_ARRAY,
cases[i].depth, cases[i].subRect,
cases[i].unpackImageHeight, cases[i].rTextureCoord,
cases[i].expected,
program, cases[i].size, canvasSetupFunction, sourceDescription);
runOneIteration(canvas, true, cases[i].flipY, gl.TEXTURE_2D_ARRAY,
cases[i].depth, cases[i].subRect,
cases[i].unpackImageHeight, cases[i].rTextureCoord,
cases[i].expected,
program, cases[i].size, canvasSetupFunction, sourceDescription);
}
}
return init;
}
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