Source code
Revision control
Copy as Markdown
Other Tools
<!--
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>WebGL WebGL_debug_shaders Conformance Tests</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>
<div id="description"></div>
<canvas id="canvas" style="width: 1px; height: 1px;"> </canvas>
<div id="console"></div>
<!-- Shaders for testing standard derivatives -->
<script>
"use strict";
description("This test verifies the functionality of the WEBGL_debug_shaders extension, if it is available.");
debug("");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("canvas");
var ext = null;
var shader = null;
var program = null;
var info = null;
var translatedSource;
var newTranslatedSource;
if (!gl) {
testFailed("WebGL context does not exist");
} else {
testPassed("WebGL context exists");
// Query the extension and store globally so shouldBe can access it
ext = gl.getExtension("WEBGL_debug_shaders");
if (!ext) {
testPassed("No WEBGL_debug_shaders support -- this is legal");
runSupportedTest(false);
} else {
testPassed("Successfully enabled WEBGL_debug_shaders extension");
runSupportedTest(true);
runTestEnabled();
}
}
function runSupportedTest(extensionEnabled) {
var supported = gl.getSupportedExtensions();
if (supported.indexOf("WEBGL_debug_shaders") >= 0) {
if (extensionEnabled) {
testPassed("WEBGL_debug_shaders listed as supported and getExtension succeeded");
} else {
testFailed("WEBGL_debug_shaders listed as supported but getExtension failed");
}
} else {
if (extensionEnabled) {
testFailed("WEBGL_debug_shaders not listed as supported but getExtension succeeded");
} else {
testPassed("WEBGL_debug_shaders not listed as supported and getExtension failed -- this is legal");
}
}
}
function runTestEnabled() {
debug("Testing function with extension enabled");
var shaderInfos = [
{
source: "void main() { gl_Position = vec4(1.0, 0.0, 0.0, 1.0); }",
type: gl.VERTEX_SHADER
},
{
source: "void main() { gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); }",
type: gl.FRAGMENT_SHADER
}
];
// Do this twice to test for caching issues.
for (var jj = 0; jj < 2; ++jj) {
debug("pass:" + (jj + 1));
program = gl.createProgram();
for (var ii = 0; ii < shaderInfos.length; ++ii) {
info = shaderInfos[ii];
shader = gl.createShader(info.type);
// if no source has been defined or compileShader() has not been called,
// getTranslatedShaderSource() should return an empty string.
shouldBe("ext.getTranslatedShaderSource(shader)", '""');
gl.shaderSource(shader, info.source);
shouldBe("ext.getTranslatedShaderSource(shader)", '""');
gl.compileShader(shader);
shouldBeTrue("gl.getShaderParameter(shader, gl.COMPILE_STATUS)");
translatedSource = ext.getTranslatedShaderSource(shader);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No gl error should occur");
if (translatedSource && translatedSource.length > 0) {
testPassed("Successfully called getTranslatedShaderSource()");
} else {
testFailed("Calling getTranslatedShaderSource() failed");
}
gl.attachShader(program, shader);
}
gl.linkProgram(program);
shouldBeTrue("gl.getProgramParameter(program, gl.LINK_STATUS)");
}
// Test changing the source. Make sure we get the correct source each time.
debug("test changing source");
shader = gl.createShader(gl.FRAGMENT_SHADER);
gl.shaderSource(shader, "void main() { gl_FragColor = vec4(gl_FragCoord.x, 0.0, 0.0, 1.0); }");
gl.compileShader(shader);
shouldBeTrue("gl.getShaderParameter(shader, gl.COMPILE_STATUS)");
shouldThrow("ext.getTranslatedShaderSource(null)");
translatedSource = ext.getTranslatedShaderSource(shader);
shouldBeTrue('translatedSource && translatedSource.indexOf("gl_FragCoord") >= 0');
// change the source but don't compile.
gl.shaderSource(shader, "void main() { gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); }");
// the source should NOT change. It should be the same as the old source.
newTranslatedSource = ext.getTranslatedShaderSource(shader);
shouldBe('newTranslatedSource', 'translatedSource');
// now compile.
gl.compileShader(shader);
shouldBeTrue("gl.getShaderParameter(shader, gl.COMPILE_STATUS)");
// the source should have change.
newTranslatedSource = ext.getTranslatedShaderSource(shader);
shouldNotBe('newTranslatedSource', 'translatedSource');
}
debug("");
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>