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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.
*/
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Passing a struct containing a sampler to a function.</title>
<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
<script src="../../../js/js-test-pre.js"></script>
<script src="../../../js/webgl-test-utils.js"></script>
</head>
<body>
<canvas id="output" style="border: none;" width="256" height="256"></canvas>
<div id="description"></div>
<div id="console"></div>
<script id="shader-vs" type="x-shader/x-vertex">
attribute vec4 a_position;
void main(){
gl_Position = a_position;
}
</script>
<script id="shader-fs" type="x-shader/x-fragment">
precision mediump float;
struct SomeStruct{
sampler2D source;
};
vec4 fun(SomeStruct s){
return texture2D(s.source, vec2(0.5));
}
uniform SomeStruct green;
void main(){
gl_FragColor = fun(green);
}
</script>
<script>
"use strict";
description();
debug("");
debug("If the test passes correctly the viewport will be green.");
var wtu = WebGLTestUtils;
var canvas = document.getElementById("output");
var gl = wtu.create3DContext(canvas);
if (!gl) {
testFailed("context does not exist");
} else {
var textureGreen = gl.createTexture()
gl.bindTexture(gl.TEXTURE_2D, textureGreen);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
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);
wtu.fillTexture(gl, textureGreen, 1, 1, [0, 255, 0, 255]);
gl.bindTexture(gl.TEXTURE_2D, null);
// Clear complete viewport to red
gl.clearColor(1.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
var attribBuffers = wtu.setupUnitQuad(gl, 0, 1);
var program = wtu.setupProgram(gl, ["shader-vs", "shader-fs"], ["a_position"], [0], true);
if (!program) {
testFailed("Shader compilation/link failed");
} else {
// Bind texture
var uniformMap = wtu.getUniformMap(gl, program);
gl.activeTexture(gl.TEXTURE0);
gl.bindTexture(gl.TEXTURE_2D, textureGreen);
gl.uniform1i(uniformMap['green.source'].location, 0);
// Draw
wtu.drawUnitQuad(gl);
// Verify output
wtu.checkCanvasRect(gl, 0, 128, 256, 128, [0, 255,0, 255], "should be green", 1);
}
}
var successfullyParsed = true;
</script>
<script src="../../../js/js-test-post.js"></script>
</body>
</html>
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