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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
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<link rel="stylesheet" type="text/css" href="../unit.css" />
<script type="application/javascript" src="../unit.js"></script>
<script type="application/javascript" src="../util.js"></script>
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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 uniIV4 = f.uniform('uniIV4');
        var uniInt = f.uniform('uniInt');
        assertThrowNoGLError(gl, "number as location",
            function(){gl.uniform4iv(58882929, [1,2,3,4]);});
        assertThrowNoGLError(gl, "negative number as location",
            function(){gl.uniform4iv(-58882929, [1,2,3,4]);});
        assertGLError(gl, gl.INVALID_OPERATION, "more than 1 value to 1iv",
            function(){gl.uniform1iv(uniInt, [2,3,4,5,6]);});
        assertGLError(gl, gl.INVALID_OPERATION, "4iv on int",
            function(){gl.uniform4iv(uniInt, [2,3,4,5]);});
        assertOk("4iv on 4iv",
            function(){gl.uniform4iv(uniIV4, [1, 2, 3, 4]);});
        assertGLError(gl, gl.INVALID_VALUE, "5 values on 4iv",
            function(){gl.uniform4iv(uniIV4, [1, 2, 3, 4, 5]);});
        assertGLError(gl, gl.INVALID_OPERATION, "8 values on 4iv",
            function(){gl.uniform4iv(uniIV4, [1, 2, 3, 4, 5, 6, 7, 8]);});
        assertGLError(gl, gl.INVALID_OPERATION, "3iv on int",
            function(){gl.uniform3iv(uniInt, [2,3,4]);});
        assertGLError(gl, gl.INVALID_OPERATION, "2iv on int",
            function(){gl.uniform2iv(uniInt, [2,3]);});
        assertGLError(gl, gl.INVALID_OPERATION, "3iv on 4iv",
            function(){gl.uniform3iv(uniIV4, [4,5,6]);});
        assertGLError(gl, gl.INVALID_OPERATION, "2iv on 4iv",
            function(){gl.uniform2iv(uniIV4, [5,6]);});
        assertGLError(gl, gl.INVALID_OPERATION, "1iv on 4iv",
            function(){gl.uniform1iv(uniIV4, [6]);});
        assertGLError(gl, gl.INVALID_VALUE, "not enough values",
            function(){gl.uniform1iv(uniInt, []);});
        assertGLError(gl, gl.INVALID_OPERATION, "1fv on int",
            function(){gl.uniform1fv(uniInt, [2]);});
        assertGLError(gl, gl.INVALID_OPERATION, "4fv on ivec4",
            function(){gl.uniform4fv(uniIV4, [2,3,4,5]);});
        gl.uniform1iv(uniInt, [2]);
        gl.uniform4iv(uniIV4, [1, 2, 3, 4]);
    });
    var d = new Uint8Array(4);
    gl.readPixels(0,0,1,1,gl.RGBA, gl.UNSIGNED_BYTE, d);
    assertArrayEquals([1,2,3,8], d);
    sh.destroy();
    throwError(gl);
}

Tests.endUnit = function(gl) {
}

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

uniform int uniInt;

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

uniform ivec4 uniIV4;

varying vec4 texCoord0;
void main()
{
    gl_FragColor = vec4(
        float(uniIV4.x)/256.0,
        float(uniIV4.y)/256.0,
        float(uniIV4.z)/256.0,
        float(uniIV4.a)*texCoord0.z/256.0);
}
</script>
<style>canvas{ position:absolute; }</style>
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<canvas id="gl" width="16" height="16"></canvas>
</body></html>
