1 files changed, 178 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/frag-depth.html b/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/frag-depth.html
new file mode 100644
index 000000000..818248687
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/frag-depth.html
@@ -0,0 +1,178 @@
+<!--
+
+/*
+** Copyright (c) 2013 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 Frag Depth 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: 50px; height: 50px;"> </canvas>
+<div id="console"></div>
+<!-- Shaders for testing fragment depth writing -->
+
+<!-- Shader omitting the required #version -->
+<script id="fragmentShaderESSL1" type="x-shader/x-fragment">
+precision mediump float;
+void main() {
+    gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+    gl_FragDepth = 1.0;
+}
+</script>
+<!-- Shader with required #version -->
+<script id="fragmentShaderESSL3" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+out vec4 my_FragColor;
+void main() {
+    my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+    gl_FragDepth = 1.0;
+}
+</script>
+<!-- Shader using the EXT suffix -->
+<script id="fragmentShaderESSL3EXT" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+out vec4 my_FragColor;
+void main() {
+    my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+    gl_FragDepthEXT = 1.0;
+}
+</script>
+<!-- Shaders to link with test fragment shaders -->
+<script id="vertexShaderESSL1" type="x-shader/x-vertex">
+attribute vec4 vPosition;
+void main() {
+    gl_Position = vPosition;
+}
+</script>
+<script id="vertexShaderESSL3" type="x-shader/x-vertex">#version 300 es
+in vec4 vPosition;
+void main() {
+    gl_Position = vPosition;
+}
+</script>
+
+<!-- Shader to test output -->
+<script id="outputFragmentShader" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+uniform float uDepth;
+
+out vec4 my_FragColor;
+void main() {
+    my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+    gl_FragDepth = uDepth;
+}
+</script>
+
+<script>
+"use strict";
+description("This test verifies the functionality of setting fragment depth in a shader.");
+
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = wtu.create3DContext(canvas, null, 2);
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+
+    runShaderTests();
+    debug("");
+    runOutputTests();
+}
+
+function runShaderTests() {
+    debug("");
+    debug("Testing various shader compiles");
+
+    // Always expect ESSL1 shaders to fail
+    var fragmentProgramESSL1 = wtu.loadProgramFromScriptExpectError(gl, "vertexShaderESSL1", "fragmentShaderESSL1");
+    if (fragmentProgramESSL1) {
+        testFailed("gl_FragDepth allowed in ESSL1 shader - should be disallowed");
+    } else {
+        testPassed("gl_FragDepth disallowed in ESSL1 shader");
+    }
+
+    // Try to compile a shader using the built-ins that should only succeed if enabled
+    var testFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "vertexShaderESSL3", "fragmentShaderESSL3");
+    if (testFragmentProgram) {
+        testPassed("gl_FragDepth allowed in ESSL3 shader");
+    } else {
+        testFailed("gl_FragDepth disallowed in ESSL3 shader");
+    }
+
+    var testFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "vertexShaderESSL3", "fragmentShaderESSL3EXT");
+    if (testFragmentProgram) {
+        testFailed("gl_FragDepthEXT allowed in ESSL3 shader - should only allow gl_FragDepth");
+    } else {
+        testPassed("gl_FragDepthEXT disallowed in ESSL3 shader");
+    }
+}
+
+function runOutputTests() {
+    debug("Testing rendering results from writing to gl_FragData");
+
+    canvas.width = 50; canvas.height = 50;
+    gl.viewport(0, 0, canvas.width, canvas.height);
+
+    // Enable depth testing with a clearDepth of 0.5
+    // This makes it so that fragments are only rendered when
+    // gl_FragDepth is < 0.5
+    gl.clearDepth(0.5);
+    gl.enable(gl.DEPTH_TEST);
+
+    var positionLoc = 0;
+    var texcoordLoc = 1;
+    var program = wtu.setupProgram(gl, ["vertexShaderESSL3", "outputFragmentShader"], ['vPosition'], [0]);
+    var quadParameters = wtu.setupUnitQuad(gl, 0, 1);
+    var depthUniform = gl.getUniformLocation(program, "uDepth");
+
+    // Draw 1: Greater than clear depth
+    gl.uniform1f(depthUniform, 1.0);
+    wtu.clearAndDrawUnitQuad(gl);
+    wtu.checkCanvas(gl, [255, 255, 255, 255]);
+
+    // Draw 2: Less than clear depth
+    gl.uniform1f(depthUniform, 0.0);
+    wtu.clearAndDrawUnitQuad(gl);
+    wtu.checkCanvas(gl, [255, 0, 0, 255]);
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../js/js-test-post.js"></script>
+
+</body>
+</html>