uniformfArrayLen1.html

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Copyright (c) 2019 The Khronos Group Inc.

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Tests.startUnit = function () {

  var canvas = document.getElementById('gl');

  var gl = wrapGLContext(getGLContext(canvas));

  return [gl];

Tests.testUniformArray = function(gl) {

    var sh = new Filter(gl, 'foobar-vert', 'foobar-frag');

    sh.apply(function(f){

        var uniV4 = f.uniform('uniV4');

        var uniFloat = f.uniform('uniFloat');

        assertOk("1fv on 1fv",

            function(){gl.uniform1fv(uniFloat, [2]);});

        assertOk("5 values on 1fv",

            function(){gl.uniform1fv(uniFloat, [2,3,4,5,6]);});

        assertOk("4fv on 4fv",

            function(){gl.uniform4fv(uniV4, [1, 2, 3, 4]);});

        assertOk("8 values on 4fv",

            function(){gl.uniform4fv(uniV4, [1, 2, 3, 4, 5, 6, 7, 8]);});

    var uniformsFound = 0;

    var numUniforms = gl.getProgramParameter(f.shader.program, gl.ACTIVE_UNIFORMS);

    for (var i = 0; i < numUniforms; ++i) {

        var uniformName = gl.getActiveUniform(f.shader.program, i).name;

        if (uniformName.indexOf('uniV4') == 0 || uniformName.indexOf('uniFloat') == 0) {

            assert("Uniform array of length 1 ends with [0]", uniformName.indexOf("[0]") != -1);

            ++uniformsFound;

    assert("Both uniforms found", uniformsFound == 2);

        uniV4 = f.uniform('uniV4[0]');

        uniFloat = f.uniform('uniFloat[0]');

        assertOk("1fv on 1fv",

            function(){gl.uniform1fv(uniFloat, [2]);});

        assertOk("5 values on 1fv",

            function(){gl.uniform1fv(uniFloat, [2,3,4,5,6]);});

        assertOk("4fv on 4fv",

            function(){gl.uniform4fv(uniV4, [1, 2, 3, 4]);});

        assertOk("8 values on 4fv",

            function(){gl.uniform4fv(uniV4, [1, 2, 3, 4, 5, 6, 7, 8]);});

});

    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 float uniFloat[1];

varying vec4 texCoord0;

void main()

    texCoord0 = vec4(Tex.s, 1.0-Tex.t, uniFloat[0], 0.0);

    gl_Position = vec4(Vertex, 1.0);

</script>

<script id="foobar-frag" type="x-shader/x-fragment">

precision mediump float;

uniform vec4 uniV4[1];

varying vec4 texCoord0;

void main()

    gl_FragColor = vec4(

        uniV4[0].r/255.0,

        uniV4[0].g/255.0,

        uniV4[0].b/255.0,

        uniV4[0].a*texCoord0.z/255.0);

</script>

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<canvas id="gl" width="16" height="16"></canvas>

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