<!--
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>GLSL Structure Equals Test</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>

<script id="simple-vs" type="x-shader/x-vertex">
attribute vec4 a_position;
void main(void) {
    gl_Position = a_position;
}
</script>
<script id="simple-struct-fs" type="x-shader/x-fragment">
precision mediump float;
struct my_struct {
  float f;
};

my_struct a = my_struct(1.0);
my_struct b = my_struct(1.0);

void main(void) {
    gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);

    if (a == b) {
        gl_FragColor.y = 1.0;
    }
}
</script>
<script id="vec-struct-fs" type="x-shader/x-fragment">
precision mediump float;
struct my_struct {
  vec3 v;
};

my_struct a = my_struct(vec3(1.0, 2.0, 3.0));
my_struct b = my_struct(vec3(1.0, 2.0, 3.0));

void main(void) {
    gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);

    if (a == b) {
        gl_FragColor.y = 1.0;
    }
}
</script>
<script id="nested-struct-fs" type="x-shader/x-fragment">
precision mediump float;

struct s1
{
    float f;
};

struct s2
{
    s1 s;
};

s2 a = s2(s1(1.0));
s2 b = s2(s1(1.0));

void main(void) {
    gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);

    if (a == b) {
        gl_FragColor.y = 1.0;
    }
}
</script>
<script id="nested-vec-struct-fs" type="x-shader/x-fragment">
precision mediump float;

struct s1
{
    vec3 v;
};

struct s2
{
    s1 s;
};

s2 a = s2(s1(vec3(1.0, 2.0, 3.0)));
s2 b = s2(s1(vec3(1.0, 2.0, 3.0)));

void main(void) {
    gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);

    if (a == b) {
        gl_FragColor.y = 1.0;
    }
}
</script>
<script id="array-struct-fs" type="x-shader/x-fragment">
precision mediump float;

struct my_struct
{
    float f[3];
};

void main(void) {
    gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
    my_struct a;
    my_struct b;
    for (int i = 0; i < 3; ++i) {
        a.f[i] = 0.0;
        b.f[i] = 1.0;
    }

    if (a == b) {
        gl_FragColor.x = 1.0;
    }
}
</script>
<script id="sampler-struct-fs" type="x-shader/x-fragment">
precision mediump float;

struct my_struct
{
    sampler2D s;
};

uniform my_struct a;
uniform my_struct b;

void main(void) {
    gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);

    if (a == b) {
        gl_FragColor.x = 1.0;
    }
}
</script>
</head>
<body>
<canvas id="canvas" width="50" height="50"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description("Testing struct equals");

var wtu = WebGLTestUtils;
GLSLConformanceTester.runTests([
  {
    vShaderId: "simple-vs",
    vShaderSuccess: true,
    fShaderId: "simple-struct-fs",
    fShaderSuccess: true,
    linkSuccess: true,
    render: true,
    passMsg: "Simple struct with one float",
  },
  {
    vShaderId: "simple-vs",
    vShaderSuccess: true,
    fShaderId: "vec-struct-fs",
    fShaderSuccess: true,
    linkSuccess: true,
    render: true,
    passMsg: "Simple struct with a vector",
  },
  {
    vShaderId: "simple-vs",
    vShaderSuccess: true,
    fShaderId: "nested-struct-fs",
    fShaderSuccess: true,
    linkSuccess: true,
    render: true,
    passMsg: "Nested struct with a float",
  },
  {
    vShaderId: "simple-vs",
    vShaderSuccess: true,
    fShaderId: "nested-vec-struct-fs",
    fShaderSuccess: true,
    linkSuccess: true,
    render: true,
    passMsg: "Nested struct with a vector",
  },
  {
    vShaderId: "simple-vs",
    vShaderSuccess: true,
    fShaderId: "array-struct-fs",
    fShaderSuccess: false,
    linkSuccess: false,
    passMsg: "Comparing a struct containing an array should not compile",
  },
  {
    vShaderId: "simple-vs",
    vShaderSuccess: true,
    fShaderId: "sampler-struct-fs",
    fShaderSuccess: false,
    linkSuccess: false,
    passMsg: "Comparing a struct containing a sampler should not compile",
  }
]);
debug("");

var successfullyParsed = true;
</script>
</body>
</html>

