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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
found in the LICENSE.txt file.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ESSL300 sampler array indexing rules</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
<script src="../../js/js-test-pre.js"></script>
<script src="../../js/webgl-test-utils.js"></script>
<script src="../../js/glsl-conformance-test.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script id="vs" type="text/plain">#version 300 es
void main() {}
</script>
<script id="fs_constant_integer_expression" type="text/plain">#version 300 es
precision mediump float;
uniform sampler2D u_tex[2];
void main()
{
texture(u_tex[0], vec2(0));
texture(u_tex[1], vec2(0));
}
</script>
<script id="fs_constant_index_expression" type="text/plain">#version 300 es
precision mediump float;
uniform sampler2D u_tex[2];
void main()
{
for (int i = 0; i < 2; i++) {
texture(u_tex[i], vec2(0));
}
}
</script>
<script id="fs_constant_integer_expression_switch" type="text/plain">#version 300 es
precision mediump float;
uniform sampler2D u_tex[2];
void main()
{
for (int i = 0; i < 2; i++) {
switch (i) {
case 0:
texture(u_tex[0], vec2(0));
break;
case 1:
texture(u_tex[1], vec2(0));
break;
}
}
}
</script>
<script type="application/javascript">
"use strict";
description();
GLSLConformanceTester.runTests([
{
vShaderId: "vs",
vShaderSuccess: true,
fShaderId: "fs_constant_integer_expression",
fShaderSuccess: true,
linkSuccess: true,
passMsg: "indexing into an array of samplers with constant-integer-expression is required",
},
{
vShaderId: "vs",
vShaderSuccess: true,
fShaderId: "fs_constant_index_expression",
fShaderSuccess: false,
linkSuccess: false,
passMsg: "indexing into an array of samplers with constant-index-expression is forbidden in essl300",
},
{
vShaderId: "vs",
vShaderSuccess: true,
fShaderId: "fs_constant_integer_expression_switch",
fShaderSuccess: true,
linkSuccess: true,
passMsg: "constant-index-expression can be converted into fs_constant_integer_expression via a switch",
},
], 2);
</script>
</body>
</html>