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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.
*/
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL shader precision format test.</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="canvas" width="2" height="2" style="width: 40px; height: 40px;"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
var wtu = WebGLTestUtils;
description(document.title);
debug("Tests that WebGLShaderPrecisionFormat class and getShaderPrecisionFormat work.");
debug("");
var gl = wtu.create3DContext("canvas");
function verifyShaderPrecisionFormat(shadertype, precisiontype) {
shouldBeTrue('gl.getShaderPrecisionFormat(' + shadertype + ', ' +
precisiontype + ') instanceof WebGLShaderPrecisionFormat');
}
debug("");
debug("Test that getShaderPrecisionFormat returns a WebGLShaderPrecisionFormat object.");
debug("");
verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.LOW_FLOAT');
verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.MEDIUM_FLOAT');
verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.HIGH_FLOAT');
verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.LOW_INT');
verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.MEDIUM_INT');
verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.HIGH_INT');
verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.LOW_FLOAT');
verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.MEDIUM_FLOAT');
verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.HIGH_FLOAT');
verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.LOW_INT');
verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.MEDIUM_INT');
verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.HIGH_INT');
debug("");
debug("Test that getShaderPrecisionFormat throws an error with invalid parameters.");
debug("");
wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, 'gl.getShaderPrecisionFormat(gl.HIGH_INT, gl.VERTEX_SHADER)');
debug("");
debug("Test that WebGLShaderPrecisionFormat values are sensible.");
debug("");
// The minimum values are from OpenGL ES Shading Language spec, section 4.5.
var shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 1');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 1');
shouldBeTrue('shaderPrecisionFormat.precision >= 8');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 14');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 14');
shouldBeTrue('shaderPrecisionFormat.precision >= 10');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_FLOAT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 62');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 62');
shouldBeTrue('shaderPrecisionFormat.precision >= 16');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_INT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 8');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 8');
shouldBeTrue('shaderPrecisionFormat.precision == 0');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_INT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 10');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 10');
shouldBeTrue('shaderPrecisionFormat.precision == 0');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_INT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 16');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 16');
shouldBeTrue('shaderPrecisionFormat.precision == 0');
var shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_FLOAT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 1');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 1');
shouldBeTrue('shaderPrecisionFormat.precision >= 8');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 14');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 14');
shouldBeTrue('shaderPrecisionFormat.precision >= 10');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_INT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 8');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 8');
shouldBeTrue('shaderPrecisionFormat.precision == 0');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_INT);
shouldBeTrue('shaderPrecisionFormat.rangeMin >= 10');
shouldBeTrue('shaderPrecisionFormat.rangeMax >= 10');
shouldBeTrue('shaderPrecisionFormat.precision == 0');
debug("");
debug("Test optional highp support in fragment shaders.");
debug("");
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT);
shouldBeTrue('(shaderPrecisionFormat.rangeMin == 0 && shaderPrecisionFormat.rangeMax == 0 && shaderPrecisionFormat.precision == 0) || (shaderPrecisionFormat.rangeMin >= 62 && shaderPrecisionFormat.rangeMax >= 62 && shaderPrecisionFormat.precision >= 16)');
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_INT);
shouldBeTrue('(shaderPrecisionFormat.rangeMin == 0 && shaderPrecisionFormat.rangeMax == 0 && shaderPrecisionFormat.precision == 0) || (shaderPrecisionFormat.rangeMin >= 16 && shaderPrecisionFormat.rangeMax >= 16 && shaderPrecisionFormat.precision == 0)');
debug("");
debug("Test that getShaderPrecisionFormat returns the same thing every call.");
debug("");
shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT);
var shaderPrecisionFormat2 = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT);
shouldBeTrue('shaderPrecisionFormat.rangeMin == shaderPrecisionFormat2.rangeMin');
shouldBeTrue('shaderPrecisionFormat.rangeMax == shaderPrecisionFormat2.rangeMax');
shouldBeTrue('shaderPrecisionFormat.precision == shaderPrecisionFormat2.precision');
finishTest();
</script>
</body>
</html>
|
