LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance/extensions/ext-frag-depth.html - WebKit - Git at Google

 <!--

 /*
 ** 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 EXT_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 #extension pragma -->
 <script id="missingPragmaFragmentShader" type="x-shader/x-fragment">
 precision mediump float;
 void main() {
     gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
     gl_FragDepthEXT = 1.0;
 }
 </script>

 <!-- Shader to test macro definition -->
 <script id="macroFragmentShader" type="x-shader/x-fragment">
 precision mediump float;
 void main() {
 #ifdef GL_EXT_frag_depth
     gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
 #else
     // Error expected
     #error no GL_EXT_frag_depth;
 #endif
 }
 </script>

 <!-- Shader with required #extension pragma -->
 <script id="testFragmentShader" type="x-shader/x-fragment">
 #extension GL_EXT_frag_depth : enable
 precision mediump float;
 void main() {
     gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
     gl_FragDepthEXT = 1.0;
 }
 </script>
 <!-- Shaders to link with test fragment shaders -->
 <script id="goodVertexShader" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 void main() {
     gl_Position = vPosition;
 }
 </script>
 <!-- Shaders to test output -->
 <script id="outputVertexShader" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 void main() {
     gl_Position = vPosition;
 }
 </script>
 <script id="outputFragmentShader" type="x-shader/x-fragment">
 #extension GL_EXT_frag_depth : enable
 precision mediump float;
 uniform float uDepth;
 void main() {
     gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
     gl_FragDepthEXT = uDepth;
 }
 </script>

 <script>
 "use strict";
 description("This test verifies the functionality of the EXT_frag_depth extension, if it is available.");

 debug("");

 var wtu = WebGLTestUtils;
 var canvas = document.getElementById("canvas");
 var gl = wtu.create3DContext(canvas);
 var ext = null;

 // Run all tests once.
 runAllTests();

 // Run all tests against with a new context to test for any cache issues.
 debug("");
 debug("Testing new context to catch cache errors");
 gl = wtu.create3DContext();
 ext = null;
 runAllTests();

 function runAllTests() {
     if (!gl) {
         testFailed("WebGL context does not exist");
     } else {
         testPassed("WebGL context exists");

         runShaderTests(false);

         // Query the extension and store globally so shouldBe can access it
         ext = wtu.getExtensionWithKnownPrefixes(gl, "EXT_frag_depth");
         if (!ext) {
             testPassed("No EXT_frag_depth support -- this is legal");

             runSupportedTest(false);
         } else {
             testPassed("Successfully enabled EXT_frag_depth extension");

             runSupportedTest(true);

             runShaderTests(true);
             runOutputTests();
             runUniqueObjectTest();

             // Run deferred link tests.
             runDeferredLinkTests();
         }
     }

 }

 function runSupportedTest(extensionEnabled) {
     var supported = gl.getSupportedExtensions();
     if (supported.indexOf("EXT_frag_depth") >= 0) {
         if (extensionEnabled) {
             testPassed("EXT_frag_depth listed as supported and getExtension succeeded");
         } else {
             testFailed("EXT_frag_depth listed as supported but getExtension failed");
         }
     } else {
         if (extensionEnabled) {
             testFailed("EXT_frag_depth not listed as supported but getExtension succeeded");
         } else {
             testPassed("EXT_frag_depth not listed as supported and getExtension failed -- this is legal");
         }
     }
 }

 function runShaderTests(extensionEnabled) {
     debug("");
     debug("Testing various shader compiles with extension " + (extensionEnabled ? "enabled" : "disabled"));

     // Expect the macro shader to succeed ONLY if enabled
     var macroFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "goodVertexShader", "macroFragmentShader");
     if (extensionEnabled) {
         if (macroFragmentProgram) {
             // Expected result
             testPassed("GL_EXT_frag_depth defined in shaders when extension is enabled");
         } else {
             testFailed("GL_EXT_frag_depth not defined in shaders when extension is enabled");
         }
     } else {
         if (macroFragmentProgram) {
             testFailed("GL_EXT_frag_depth defined in shaders when extension is disabled");
         } else {
             testPassed("GL_EXT_frag_depth not defined in shaders when extension disabled");
         }
     }

     // Always expect the shader missing the #pragma to fail (whether enabled or not)
     var missingPragmaFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "goodVertexShader", "missingPragmaFragmentShader");
     if (missingPragmaFragmentProgram) {
         testFailed("Shader built-ins allowed without #extension pragma");
     } else {
         testPassed("Shader built-ins disallowed without #extension pragma");
     }

     // Try to compile a shader using the built-ins that should only succeed if enabled
     var testFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "goodVertexShader", "testFragmentShader");
     if (extensionEnabled) {
         if (testFragmentProgram) {
             testPassed("Shader built-ins compiled successfully when extension enabled");
         } else {
             testFailed("Shader built-ins failed to compile when extension enabled");
         }
     } else {
         if (testFragmentProgram) {
             testFailed("Shader built-ins compiled successfully when extension disabled");
         } else {
             testPassed("Shader built-ins failed to compile when extension disabled");
         }
     }
 }

 function runOutputTests() {
     var e = 2; // Amount of variance to allow in result pixels - may need to be tweaked higher

     debug("Testing various draws for valid built-in function behavior");

     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_fragDepthEXT is < 0.5
     gl.clearDepth(0.5);
     gl.enable(gl.DEPTH_TEST);

     var positionLoc = 0;
     var texcoordLoc = 1;
     var program = wtu.setupProgram(gl, ["outputVertexShader", "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.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [255, 255, 255, 255]);

     // Draw 2: Less than clear depth
     gl.uniform1f(depthUniform, 0.0);
     wtu.clearAndDrawUnitQuad(gl);
     wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [255, 0, 0, 255]);
 }

 function runUniqueObjectTest()
 {
     debug("Testing that getExtension() returns the same object each time");
     ext = null;
     gl.getExtension("EXT_frag_depth").myProperty = 2;
     webglHarnessCollectGarbage();
     shouldBe('gl.getExtension("EXT_frag_depth").myProperty', '2');
 }

 function runDeferredLinkTests() {
     debug("");
     debug("Testing deferred shader compilation tests.");

     // Test for compilation failures that are caused by missing extensions
     // do not succeed if extensions are enabled during linking. This would
     // only happen for deferred shader compilations.

     // First test if link succeeds with extension enabled.
     var glEnabled = wtu.create3DContext();
     var extEnabled = glEnabled.getExtension("EXT_frag_depth");
     if (!extEnabled) {
         testFailed("Deferred link test expects the extension to be supported");
     }

     var vertexShader = wtu.loadShaderFromScript(glEnabled, "goodVertexShader");
     var fragmentShader = wtu.loadShaderFromScript(glEnabled, "macroFragmentShader");

     if (!vertexShader || !fragmentShader) {
         testFailed("Could not create good shaders.");
         return;
     }

     var program = wtu.setupProgram(glEnabled, [vertexShader, fragmentShader]);

     if (!program) {
         testFailed("Compilation with extension enabled failed.");
         return;
     }

     // Create new context to test link failure without extension enabled.
     var glDeferred = wtu.create3DContext();

     var vertexShader = wtu.loadShaderFromScript(glDeferred, "goodVertexShader", glDeferred.VERTEX_SHADER, undefined, undefined, true);
     var fragmentShader = wtu.loadShaderFromScript(glDeferred, "macroFragmentShader", glDeferred.FRAGMENT_SHADER, undefined, undefined, true);

     if (vertexShader == null || fragmentShader == null) {
         testFailed("Could not create shaders.");
         return;
     }

     // Shader compilations should have failed due to extensions not enabled.
     glDeferred.getExtension("EXT_frag_depth");
     var program = wtu.setupProgram(glDeferred, [vertexShader, fragmentShader]);
     if (program) {
         testFailed("Compilation with extension disabled then linking with extension enabled should have failed.");
         return;
     }

     testPassed("Compilation with extension disabled then linking with extension enabled.");
 }

 debug("");
 var successfullyParsed = true;
 </script>
 <script src="../../js/js-test-post.js"></script>

 </body>
 </html>
	<!--

	/*
	** 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 EXT_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 #extension pragma -->
	<script id="missingPragmaFragmentShader" type="x-shader/x-fragment">
	precision mediump float;
	void main() {
	gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
	gl_FragDepthEXT = 1.0;
	}
	</script>

	<!-- Shader to test macro definition -->
	<script id="macroFragmentShader" type="x-shader/x-fragment">
	precision mediump float;
	void main() {
	#ifdef GL_EXT_frag_depth
	gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
	#else
	// Error expected
	#error no GL_EXT_frag_depth;
	#endif
	}
	</script>

	<!-- Shader with required #extension pragma -->
	<script id="testFragmentShader" type="x-shader/x-fragment">
	#extension GL_EXT_frag_depth : enable
	precision mediump float;
	void main() {
	gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
	gl_FragDepthEXT = 1.0;
	}
	</script>
	<!-- Shaders to link with test fragment shaders -->
	<script id="goodVertexShader" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	void main() {
	gl_Position = vPosition;
	}
	</script>
	<!-- Shaders to test output -->
	<script id="outputVertexShader" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	void main() {
	gl_Position = vPosition;
	}
	</script>
	<script id="outputFragmentShader" type="x-shader/x-fragment">
	#extension GL_EXT_frag_depth : enable
	precision mediump float;
	uniform float uDepth;
	void main() {
	gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
	gl_FragDepthEXT = uDepth;
	}
	</script>

	<script>
	"use strict";
	description("This test verifies the functionality of the EXT_frag_depth extension, if it is available.");

	debug("");

	var wtu = WebGLTestUtils;
	var canvas = document.getElementById("canvas");
	var gl = wtu.create3DContext(canvas);
	var ext = null;

	// Run all tests once.
	runAllTests();

	// Run all tests against with a new context to test for any cache issues.
	debug("");
	debug("Testing new context to catch cache errors");
	gl = wtu.create3DContext();
	ext = null;
	runAllTests();

	function runAllTests() {
	if (!gl) {
	testFailed("WebGL context does not exist");
	} else {
	testPassed("WebGL context exists");

	runShaderTests(false);

	// Query the extension and store globally so shouldBe can access it
	ext = wtu.getExtensionWithKnownPrefixes(gl, "EXT_frag_depth");
	if (!ext) {
	testPassed("No EXT_frag_depth support -- this is legal");

	runSupportedTest(false);
	} else {
	testPassed("Successfully enabled EXT_frag_depth extension");

	runSupportedTest(true);

	runShaderTests(true);
	runOutputTests();
	runUniqueObjectTest();

	// Run deferred link tests.
	runDeferredLinkTests();
	}
	}

	}

	function runSupportedTest(extensionEnabled) {
	var supported = gl.getSupportedExtensions();
	if (supported.indexOf("EXT_frag_depth") >= 0) {
	if (extensionEnabled) {
	testPassed("EXT_frag_depth listed as supported and getExtension succeeded");
	} else {
	testFailed("EXT_frag_depth listed as supported but getExtension failed");
	}
	} else {
	if (extensionEnabled) {
	testFailed("EXT_frag_depth not listed as supported but getExtension succeeded");
	} else {
	testPassed("EXT_frag_depth not listed as supported and getExtension failed -- this is legal");
	}
	}
	}

	function runShaderTests(extensionEnabled) {
	debug("");
	debug("Testing various shader compiles with extension " + (extensionEnabled ? "enabled" : "disabled"));

	// Expect the macro shader to succeed ONLY if enabled
	var macroFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "goodVertexShader", "macroFragmentShader");
	if (extensionEnabled) {
	if (macroFragmentProgram) {
	// Expected result
	testPassed("GL_EXT_frag_depth defined in shaders when extension is enabled");
	} else {
	testFailed("GL_EXT_frag_depth not defined in shaders when extension is enabled");
	}
	} else {
	if (macroFragmentProgram) {
	testFailed("GL_EXT_frag_depth defined in shaders when extension is disabled");
	} else {
	testPassed("GL_EXT_frag_depth not defined in shaders when extension disabled");
	}
	}

	// Always expect the shader missing the #pragma to fail (whether enabled or not)
	var missingPragmaFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "goodVertexShader", "missingPragmaFragmentShader");
	if (missingPragmaFragmentProgram) {
	testFailed("Shader built-ins allowed without #extension pragma");
	} else {
	testPassed("Shader built-ins disallowed without #extension pragma");
	}

	// Try to compile a shader using the built-ins that should only succeed if enabled
	var testFragmentProgram = wtu.loadProgramFromScriptExpectError(gl, "goodVertexShader", "testFragmentShader");
	if (extensionEnabled) {
	if (testFragmentProgram) {
	testPassed("Shader built-ins compiled successfully when extension enabled");
	} else {
	testFailed("Shader built-ins failed to compile when extension enabled");
	}
	} else {
	if (testFragmentProgram) {
	testFailed("Shader built-ins compiled successfully when extension disabled");
	} else {
	testPassed("Shader built-ins failed to compile when extension disabled");
	}
	}
	}

	function runOutputTests() {
	var e = 2; // Amount of variance to allow in result pixels - may need to be tweaked higher

	debug("Testing various draws for valid built-in function behavior");

	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_fragDepthEXT is < 0.5
	gl.clearDepth(0.5);
	gl.enable(gl.DEPTH_TEST);

	var positionLoc = 0;
	var texcoordLoc = 1;
	var program = wtu.setupProgram(gl, ["outputVertexShader", "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.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [255, 255, 255, 255]);

	// Draw 2: Less than clear depth
	gl.uniform1f(depthUniform, 0.0);
	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [255, 0, 0, 255]);
	}

	function runUniqueObjectTest()
	{
	debug("Testing that getExtension() returns the same object each time");
	ext = null;
	gl.getExtension("EXT_frag_depth").myProperty = 2;
	webglHarnessCollectGarbage();
	shouldBe('gl.getExtension("EXT_frag_depth").myProperty', '2');
	}

	function runDeferredLinkTests() {
	debug("");
	debug("Testing deferred shader compilation tests.");

	// Test for compilation failures that are caused by missing extensions
	// do not succeed if extensions are enabled during linking. This would
	// only happen for deferred shader compilations.

	// First test if link succeeds with extension enabled.
	var glEnabled = wtu.create3DContext();
	var extEnabled = glEnabled.getExtension("EXT_frag_depth");
	if (!extEnabled) {
	testFailed("Deferred link test expects the extension to be supported");
	}

	var vertexShader = wtu.loadShaderFromScript(glEnabled, "goodVertexShader");
	var fragmentShader = wtu.loadShaderFromScript(glEnabled, "macroFragmentShader");

	if (!vertexShader \|\| !fragmentShader) {
	testFailed("Could not create good shaders.");
	return;
	}

	var program = wtu.setupProgram(glEnabled, [vertexShader, fragmentShader]);

	if (!program) {
	testFailed("Compilation with extension enabled failed.");
	return;
	}

	// Create new context to test link failure without extension enabled.
	var glDeferred = wtu.create3DContext();

	var vertexShader = wtu.loadShaderFromScript(glDeferred, "goodVertexShader", glDeferred.VERTEX_SHADER, undefined, undefined, true);
	var fragmentShader = wtu.loadShaderFromScript(glDeferred, "macroFragmentShader", glDeferred.FRAGMENT_SHADER, undefined, undefined, true);

	if (vertexShader == null \|\| fragmentShader == null) {
	testFailed("Could not create shaders.");
	return;
	}

	// Shader compilations should have failed due to extensions not enabled.
	glDeferred.getExtension("EXT_frag_depth");
	var program = wtu.setupProgram(glDeferred, [vertexShader, fragmentShader]);
	if (program) {
	testFailed("Compilation with extension disabled then linking with extension enabled should have failed.");
	return;
	}

	testPassed("Compilation with extension disabled then linking with extension enabled.");
	}

	debug("");
	var successfullyParsed = true;
	</script>
	<script src="../../js/js-test-post.js"></script>

	</body>
	</html>