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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>Driver Bug - Array of structs with int or bool in first position</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="example" style="border: none;" width="788" height="256"></canvas>
<div id="description"></div>
<div id="console"></div>
<script id="shader-vs" type="x-shader/x-vertex">
attribute vec2 pos;
void main(void) {
gl_Position = vec4(pos, 0.0, 1.0);
}
</script>
<script id="shader-fs-int" type="x-shader/x-fragment">
precision mediump float;
struct Light {
int unused;
vec3 color;
};
const int numLights = 1;
void main() {
Light lights[numLights];
lights[0].color = vec3(0.0, 0.5, 0.0);
vec3 result = vec3(0.0, 0.0, 0.0);
for (int i=0; i<numLights; i++) {
result += lights[i].color;
}
gl_FragColor = vec4(result.rgb, 1.0);
}
</script>
<script id="shader-fs-bool" type="x-shader/x-fragment">
precision mediump float;
struct Light {
bool unused;
vec3 color;
};
const int numLights = 1;
void main() {
Light lights[numLights];
lights[0].color = vec3(0.0, 0.5, 0.0);
vec3 result = vec3(0.0, 0.0, 0.0);
for (int i=0; i<numLights; i++) {
result += lights[i].color;
}
gl_FragColor = vec4(result.rgb, 1.0);
}
</script>
<script id="shader-fs-bool-read" type="x-shader/x-fragment">
precision mediump float;
struct Light {
bool useLight;
vec3 color;
};
const int numLights = 1;
void main() {
Light lights[numLights];
lights[0].color = vec3(0.0, 0.5, 0.0);
lights[0].useLight = true;
vec3 result = vec3(0.0, 0.0, 0.0);
for (int i=0; i<numLights; i++) {
Light light = lights[i];
if (light.useLight) {
result += light.color;
}
}
gl_FragColor = vec4(result.rgb, 1.0);
}
</script>
<script>
"use strict";
function test() {
description();
debug(
"This test checks accessing an array of structs, where the struct " +
"definition has an int or bool in the first position. " +
"This test has has failed in OS X on some NVIDIA cards, " +
"such as the NVIDIA GeForce GT 650M. If things are working " +
"correctly, then there will be a series of 50% green squares.")
debug("");
var wtu = WebGLTestUtils;
var canvas = document.getElementById("example");
var gl = wtu.create3DContext(canvas);
var testNum = 0;
var border = 10; // border between test squares for visibility
var squareSize = 256;
var expectedColor = [0, 127, 0, 255]; // 50% green
function subTest(message, fragmentShader) {
debug(message);
var startX = (squareSize + border) * testNum;
var program = wtu.setupProgram(
gl, ["shader-vs", fragmentShader], ["pos"], null, true);
gl.viewport(startX, 0, squareSize, squareSize);
wtu.drawUnitQuad(gl);
wtu.checkCanvasRect(
gl, startX, 0, squareSize, squareSize,
expectedColor, "square should be 50% green", 1);
debug("");
testNum++;
}
if (!gl) {
testFailed("context does not exist");
} else {
wtu.setupUnitQuad(gl);
subTest("Test unused int in first struct position.", "shader-fs-int");
subTest("Test unused bool in first struct position.", "shader-fs-bool");
subTest("Test used bool in first struct position.", "shader-fs-bool-read");
}
}
test();
var successfullyParsed = true;
</script>
<script src="../../../js/js-test-post.js"></script>
</body>
</html>
|
