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/*
** Copyright (c) 2012 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.
*/

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<link rel="stylesheet" type="text/css" href="../unit.css" />
<script type="application/x-javascript" src="../unit.js"></script>
<script type="application/x-javascript" src="../util.js"></script>
<script type="application/x-javascript">

Tests.startUnit = function () {
  var canvas = document.getElementById('gl');
  var gl = wrapGLContext(getGLContext(canvas));
  return [gl];
}

Tests.testUniformf = function(gl) {
  var sh = new Filter(gl, 'foobar-vert', 'foobar-frag');
  sh.apply(function(f){
    var foo = f.uniform('foo');
    var bar = f.uniform('bar');
    gl.uniform4fv(foo, [1,2,3,4]);
    gl.uniform1fv(bar, [2]);
  });
  var d = new Uint8Array(4);
  gl.readPixels(0,0,1,1,gl.RGBA, gl.UNSIGNED_BYTE, d);
  assertEquals([1,2,3,8], [d[0], d[1], d[2], d[3]]);
  sh.apply(function(f){
    var foo = f.uniform('foo');
    var bar = f.uniform('bar');
    gl.uniform4f(foo, 2,2,3,4);
    gl.uniform1f(bar, 3);
  });
  gl.readPixels(0,0,1,1,gl.RGBA, gl.UNSIGNED_BYTE, d);
  assertEquals([2,2,3,12], [d[0], d[1], d[2], d[3]]);
  sh.destroy();
}

Tests.endUnit = function(gl) {
}

</script>
<script id="foobar-vert" type="x-shader/x-vertex">
attribute vec3 Vertex;
attribute vec2 Tex;

uniform float bar;

varying vec4 texCoord0;
void main()
{
    texCoord0 = vec4(Tex.s, 1.0-Tex.t, bar, 0.0);
    gl_Position = vec4(Vertex, 1.0);
}
</script>
<script id="foobar-frag" type="x-shader/x-fragment">
precision mediump float;

uniform vec4 foo;

varying vec4 texCoord0;
void main()
{
    gl_FragColor = vec4(foo.r/255.0, foo.g/255.0, foo.b/255.0, foo.a*texCoord0.z/255.0);
}
</script>
<style>canvas{ position:absolute; }</style>
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<canvas id="gl" width="16" height="16"></canvas>
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