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test.html
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test.html
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<!DOCTYPE html>
<!--
Copyright (c) 2012 Brandon Jones
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not
be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
-->
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
<title>Texture Utility Sample</title>
<style>
html,
body,
canvas {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
}
.labels {
display: table;
}
</style>
</head>
<body>
<canvas id="webgl-canvas"></canvas>
<script src="sample/js/gl-matrix-min.js"></script>
<script src="sample/js/gl-util.js"></script>
<script src="sample/js/require.js"></script>
<script>
require.config({
baseUrl: "."
});
require([
"texture-util/loader"
], function(TextureUtil) {
"use strict";
var textureSet = [
{src: "sample/img/test.jpg", label: "JPEG"},
{src: "sample/img/test.png", label: "PNG"},
{src: "sample/img/test.gif", label: "gif"},
{src: "sample/img/test.bmp", label: "BMP"},
{src: "sample/img/test.tga", label: "TGA"},
{src: "sample/img/test-dxt1.dds", label: "DDS (DXT1)"},
{src: "sample/img/test-dxt5.dds", label: "DDS (DXT5)"},
{src: "sample/img/test-dxt1.crn", label: "Crunch (DXT1)"},
{src: "sample/img/test-dxt5.crn", label: "Crunch (DXT5)"}
];
var rows = 3;
var cols = 3;
//
// Setup the WebGL context
//
var canvas = document.getElementById("webgl-canvas");
var gl = getGLContext(canvas);
canvas.width = canvas.offsetWidth;
canvas.height = canvas.offsetHeight;
gl.viewport(0, 0, canvas.width, canvas.height);
var cubeVS = [
"attribute vec3 position;",
"attribute vec2 texture;",
"uniform mat4 viewMat;",
"uniform mat4 projMat;",
"varying vec2 texCoord;",
"void main(void) {",
" texCoord = texture;",
" gl_Position = projMat * viewMat * vec4(position, 1.0);",
"}"
].join("\n");
var cubeFS = [
"precision highp float;",
"uniform sampler2D diffuse;",
"varying vec2 texCoord;",
"void main(void) {",
" gl_FragColor = texture2D(diffuse, texCoord);",
"}"
].join("\n");
var shader = createGLProgram(gl, cubeVS, cubeFS);
gl.useProgram(shader.program);
var quadVerts = [
0, -1, 0, 0, 1,
1, -1, 0, 1, 1,
0, 0, 0, 0, 0,
1, 0, 0, 1, 0
];
var quadIndices = [
0, 1, 2,
2, 1, 3
];
var vertBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, vertBuffer);
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(quadVerts), gl.STATIC_DRAW);
gl.enableVertexAttribArray(shader.attribute.position);
var indexBuffer = gl.createBuffer();
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuffer);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array(quadIndices), gl.STATIC_DRAW);
gl.enableVertexAttribArray(shader.attribute.texture);
gl.vertexAttribPointer(shader.attribute.position, 3, gl.FLOAT, false, 20, 0);
gl.vertexAttribPointer(shader.attribute.texture, 2, gl.FLOAT, false, 20, 12);
gl.activeTexture(gl.TEXTURE0);
gl.uniform1i(shader.uniform.diffuse, 0);
//
// Texture Test
//
var textureLoader = new TextureUtil.TextureLoader(gl);
var textures = [];
var i, l;
for(i = 0, l = textureSet.length; i < l; ++i) {
textures.push(textureLoader.load(textureSet[i].src, function(texture, width, height) {
console.log("Texture Size:", width, height);
}));
}
var viewMat = mat4.create();
var projMat = mat4.ortho(0, cols, -rows, 0, 0, 1);
gl.uniformMatrix4fv(shader.uniform.projMat, false, projMat);
// Yes, yes. Set timeout is evil, I know. I just needed a simple refresh without including a RAF shim.
setInterval(function() {
var i, l;
mat4.identity(viewMat);
for(i = 0, l = textures.length; i < l; ++i) {
gl.bindTexture(gl.TEXTURE_2D, textures[i]);
gl.uniformMatrix4fv(shader.uniform.viewMat, false, viewMat);
gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_SHORT, 0);
mat4.translate(viewMat, [1, 0, 0]);
if((i+1) % cols == 0) {
mat4.translate(viewMat, [-cols, -1, 0]);
}
}
}, 1000);
});
</script>
</body>
</html>