mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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283 lines
9.3 KiB
HTML
283 lines
9.3 KiB
HTML
<!--
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Copyright (c) 2010 The Chromium Authors. All rights reserved.
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Use of this source code is governed by a BSD-style license that can be
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found in the LICENSE file.
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-->
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<html>
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<head>
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<link rel="stylesheet" href="../resources/js-test-style.css"/>
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<script src="../resources/js-test-pre.js"></script>
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<script src="resources/webgl-test.js"></script>
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<script id="vshader" type="x-shader/x-vertex">
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attribute vec3 g_Position;
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attribute vec2 g_TexCoord0;
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varying vec2 texCoord;
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void main()
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{
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gl_Position = vec4(g_Position.x, g_Position.y, g_Position.z, 1.0);
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texCoord = g_TexCoord0;
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}
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</script>
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<script id="fshader" type="x-shader/x-fragment">
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uniform sampler2D tex;
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varying vec2 texCoord;
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void main()
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{
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gl_FragColor = texture2D(tex, texCoord);
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}
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</script>
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<script>
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var gl = null;
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var textureLoc = null;
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var successfullyParsed = false;
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var imageData = null;
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function init()
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{
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if (window.initNonKhronosFramework) {
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window.initNonKhronosFramework(true);
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}
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description('Verifies texImage2D and texSubImage2D code paths taking ArrayBufferView');
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debug('');
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var canvas2d = document.getElementById("texcanvas");
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var context2d = canvas2d.getContext("2d");
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imageData = context2d.createImageData(1, 2);
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var data = imageData.data;
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data[0] = 255;
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data[1] = 0;
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data[2] = 0;
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data[3] = 255;
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data[4] = 0;
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data[5] = 255;
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data[6] = 0;
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data[7] = 0;
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gl = initWebGL("example", "vshader", "fshader", [ "g_Position", "g_TexCoord0" ], [ 0, 0, 0, 1 ], 1);
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gl.viewport(0, 0, 1, 2);
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gl.disable(gl.BLEND);
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textureLoc = gl.getUniformLocation(gl.program, "tex");
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var vertices = new WebGLFloatArray([
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1.0, 1.0, 0.0,
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-1.0, 1.0, 0.0,
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-1.0, -1.0, 0.0,
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1.0, 1.0, 0.0,
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-1.0, -1.0, 0.0,
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1.0, -1.0, 0.0]);
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var texCoords = new WebGLFloatArray([
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1.0, 1.0,
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0.0, 1.0,
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0.0, 0.0,
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1.0, 1.0,
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0.0, 0.0,
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1.0, 0.0]);
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var texCoordOffset = vertices.byteLength;
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var vbo = gl.createBuffer();
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gl.bindBuffer(gl.ARRAY_BUFFER, vbo);
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gl.bufferData(gl.ARRAY_BUFFER,
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texCoordOffset + texCoords.byteLength,
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gl.STATIC_DRAW);
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gl.bufferSubData(gl.ARRAY_BUFFER, 0, vertices);
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gl.bufferSubData(gl.ARRAY_BUFFER, texCoordOffset, texCoords);
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gl.enableVertexAttribArray(0);
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gl.vertexAttribPointer(0, 3, gl.FLOAT, gl.FALSE, 0, 0);
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gl.enableVertexAttribArray(1);
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gl.vertexAttribPointer(1, 2, gl.FLOAT, gl.FALSE, 0, texCoordOffset);
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runTest();
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}
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// These two declarations need to be global for "shouldBe" to see them
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var buf = null;
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var idx = 0;
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var pixel = [0, 0, 0, 1];
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var correctColor = null;
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function generateRGBAData(type, unpackAlignment)
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{
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var sourceData = [ 255, 0, 0, 255,
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0, 255, 0, 0 ];
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switch (type) {
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case gl.UNSIGNED_BYTE: {
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var rowWidth = Math.max(unpackAlignment, 4);
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var data = new Uint8Array(2 * rowWidth);
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for (var y = 0; y < 2; ++y) {
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var index = y * rowWidth;
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for (var element = 0; element < 4; ++element) {
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data[index + element] = sourceData[4 * y + element];
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}
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}
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return data;
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}
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case gl.UNSIGNED_SHORT_4_4_4_4: {
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var rowWidth = Math.max(unpackAlignment, 2) / 2;
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var data = new Uint16Array(2 * rowWidth);
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for (var y = 0; y < 2; ++y) {
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var index = y * rowWidth;
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data[index] = (((sourceData[4 * y] & 0xF0) << 8)
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| ((sourceData[4 * y + 1] & 0xF0) << 4)
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| (sourceData[4 * y + 2] & 0xF0)
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| (sourceData[4 * y + 3] >> 4));
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}
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return data;
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}
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case gl.UNSIGNED_SHORT_5_5_5_1: {
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var rowWidth = Math.max(unpackAlignment, 2) / 2;
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var data = new Uint16Array(2 * rowWidth);
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for (var y = 0; y < 2; ++y) {
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var index = y * rowWidth;
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data[index] = (((sourceData[4 * y] & 0xF8) << 8)
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| ((sourceData[4 * y + 1] & 0xF8) << 3)
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| ((sourceData[4 * y + 2] & 0xF8) >> 2)
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| (sourceData[4 * y + 3] >> 7));
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}
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return data;
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}
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}
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}
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function typeToString(type)
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{
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switch (type) {
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case gl.UNSIGNED_BYTE: return 'UNSIGNED_BYTE';
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case gl.UNSIGNED_SHORT_5_5_5_1: return 'UNSIGNED_SHORT_5_5_5_1';
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case gl.UNSIGNED_SHORT_4_4_4_4: return 'UNSIGNED_SHORT_4_4_4_4';
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}
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return 'Unknown type ' + type;
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}
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function runOneIteration(useTexSubImage2D, type, unpackAlignment, flipY, premultiplyAlpha, topColor, bottomColor)
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{
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debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
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' with type=' + typeToString(type) +
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', unpackAlignment=' + unpackAlignment +
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', flipY=' + flipY + ', premultiplyAlpha=' + premultiplyAlpha);
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gl.colorMask(true, true, true, true);
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gl.clearColor(0, 0, 0, 1.0);
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gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
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// Enable writes to the RGB channels
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gl.colorMask(true, true, true, false);
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var texture = gl.createTexture();
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// Bind the texture to texture unit 0
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gl.bindTexture(gl.TEXTURE_2D, texture);
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// Set up texture parameters
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
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// Set up pixel store parameters
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gl.pixelStorei(gl.UNPACK_ALIGNMENT, unpackAlignment);
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gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
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gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha);
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// Generate the data
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var data = generateRGBAData(type, unpackAlignment);
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if (gl.getError() != gl.NO_ERROR)
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testFailed("GL error before texture upload");
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// Upload the image into the texture
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if (useTexSubImage2D) {
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// Initialize the texture to black first
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gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0,
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gl.RGBA, type, null);
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if (gl.getError() != gl.NO_ERROR)
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testFailed("GL error after texImage2D(null)");
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gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 2, gl.RGBA, type, data);
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if (gl.getError() != gl.NO_ERROR)
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testFailed("GL error after texSubImage2D");
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} else {
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gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0, gl.RGBA, type, data);
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if (gl.getError() != gl.NO_ERROR)
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testFailed("GL error after texImage2D");
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}
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// Point the uniform sampler to texture unit 0
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gl.uniform1i(textureLoc, 0);
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// Draw the triangles
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gl.drawArrays(gl.TRIANGLES, 0, 6);
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// Read back the rendering results
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buf = new Uint8Array(1 * 2 * 4);
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gl.readPixels(0, 0, 1, 2, gl.RGBA, gl.UNSIGNED_BYTE, buf);
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// Check the top pixel and bottom pixel and make sure they have
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// the right color.
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debug("Checking bottom pixel");
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correctColor = bottomColor;
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idx = 0;
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pixel[0] = buf[idx];
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pixel[1] = buf[idx + 1];
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pixel[2] = buf[idx + 2];
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pixel[3] = buf[idx + 3];
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shouldBe("pixel", "correctColor");
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debug("Checking top pixel");
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correctColor = topColor;
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idx = 4;
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pixel[0] = buf[idx];
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pixel[1] = buf[idx + 1];
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pixel[2] = buf[idx + 2];
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pixel[3] = buf[idx + 3];
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shouldBe("pixel", "correctColor");
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}
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function runTest()
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{
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var red = [255, 0, 0, 255];
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var green = [0, 255, 0, 255];
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var redPremultiplyAlpha = [255, 0, 0, 255];
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var greenPremultiplyAlpha = [0, 0, 0, 255];
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var types = [ gl.UNSIGNED_BYTE, gl.UNSIGNED_SHORT_5_5_5_1, gl.UNSIGNED_SHORT_4_4_4_4 ];
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var unpackAlignments = [ 1, 2, 4, 8 ];
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for (var i = 0; i < types.length; ++i) {
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var type = types[i];
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for (var j = 0; j < unpackAlignments.length; ++j) {
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var unpackAlignment = unpackAlignments[j];
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runOneIteration(false, type, unpackAlignment, true, false,
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red, green);
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runOneIteration(false, type, unpackAlignment, false, false,
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green, red);
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runOneIteration(false, type, unpackAlignment, true, true,
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redPremultiplyAlpha, greenPremultiplyAlpha);
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runOneIteration(false, type, unpackAlignment, false, true,
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greenPremultiplyAlpha, redPremultiplyAlpha);
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runOneIteration(true, type, unpackAlignment, true, false,
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red, green);
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runOneIteration(true, type, unpackAlignment, false, false,
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green, red);
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runOneIteration(true, type, unpackAlignment, true, true,
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redPremultiplyAlpha, greenPremultiplyAlpha);
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runOneIteration(true, type, unpackAlignment, false, true,
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greenPremultiplyAlpha, redPremultiplyAlpha);
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}
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}
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successfullyParsed = true;
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var epilogue = document.createElement("script");
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epilogue.onload = finish;
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epilogue.src = "../resources/js-test-post.js";
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document.body.appendChild(epilogue);
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}
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function finish() {
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if (window.nonKhronosFrameworkNotifyDone) {
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window.nonKhronosFrameworkNotifyDone();
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}
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}
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</script>
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</head>
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<body onload="init()">
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<canvas id="texcanvas" width="1px" height="2px"></canvas>
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<canvas id="example" width="1px" height="2px"></canvas>
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<div id="description"></div>
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<div id="console"></div>
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</body>
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</html>
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