sampler-no-precision.html

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<title>GLSL sampler with no precision qualifier test</title>

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<script id="vshaderSamplerNoPrecision" type="x-shader/x-vertex">#version 300 es

precision mediump float;

uniform $(samplerType) u_sampler;

void main() {

    gl_Position = vec4(0.0);

</script>

<script id="fshaderSamplerNoPrecision" type="x-shader/x-fragment">#version 300 es

precision mediump float;

out vec4 my_FragColor;

uniform $(samplerType) u_sampler;

void main() {

    my_FragColor = vec4(0.0);

</script>

<script type="application/javascript">

"use strict";

description("ESSL3 sampler with no precision qualifier should not compile.");

var wtu = WebGLTestUtils;

var fragmentShaderTemplate = wtu.getScript('fshaderSamplerNoPrecision');

var vertexShaderTemplate = wtu.getScript('vshaderSamplerNoPrecision');

// ESSL 3.00.4 section 4.5.4 types with no predefined precision.

var samplerTypes = [

    'sampler3D',

    'samplerCubeShadow',

    'sampler2DShadow',

    'sampler2DArray',

    'sampler2DArrayShadow',

    'isampler2D',

    'isampler3D',

    'isamplerCube',

    'isampler2DArray',

    'usampler2D',

    'usampler3D',

    'usamplerCube',

    'usampler2DArray'

];

var tests = [];

for (var i = 0; i < samplerTypes.length; ++i) {

    var type = samplerTypes[i];

    var vertexShaderSrc = wtu.replaceParams(vertexShaderTemplate, {'samplerType': type});

    tests.push({

        vShaderSource: vertexShaderSrc,

        vShaderSuccess: false,

        linkSuccess: false,

        passMsg: 'Vertex shader with a ' + type + ' uniform with no precision qualifier should not compile'

});

    var fragmentShaderSrc = wtu.replaceParams(fragmentShaderTemplate, {'samplerType': type});

    tests.push({

        fShaderSource: fragmentShaderSrc,

        fShaderSuccess: false,

        linkSuccess: false,

        passMsg: 'Fragment shader with a ' + type + ' uniform with no precision qualifier should not compile'

});

GLSLConformanceTester.runTests(tests, 2);

</script>

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