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			164 lines
		
	
	
	
		
			5.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			164 lines
		
	
	
	
		
			5.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| // This file is based heavily on code from https://github.com/ThermalPixel/osgdemos/blob/master/osgdebug/EnableGLDebugOperation.cpp
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| // The original licence is included below:
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| /*
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| Copyright (c) 2014, Andreas Klein
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| All rights reserved.
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| 
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| Redistribution and use in source and binary forms, with or without
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| modification, are permitted provided that the following conditions are met:
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| 
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| 1. Redistributions of source code must retain the above copyright notice, this
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| list of conditions and the following disclaimer.
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| 2. Redistributions in binary form must reproduce the above copyright notice,
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| this list of conditions and the following disclaimer in the documentation
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| and/or other materials provided with the distribution.
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| 
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| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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| ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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| ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 
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| The views and conclusions contained in the software and documentation are those
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| of the authors and should not be interpreted as representing official policies,
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| either expressed or implied, of the FreeBSD Project.
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| */
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| 
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| #include "gldebug.hpp"
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| 
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| #include <cstdlib>
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| 
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| #include <components/debug/debuglog.hpp>
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| 
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| // OpenGL constants not provided by OSG:
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| #include <SDL_opengl_glext.h>
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| 
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| void debugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam)
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| {
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| #ifdef GL_DEBUG_OUTPUT
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|     std::string srcStr;
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|     switch (source)
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|     {
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|     case GL_DEBUG_SOURCE_API:
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|         srcStr = "API";
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|         break;
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|     case GL_DEBUG_SOURCE_WINDOW_SYSTEM:
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|         srcStr = "WINDOW_SYSTEM";
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|         break;
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|     case GL_DEBUG_SOURCE_SHADER_COMPILER:
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|         srcStr = "SHADER_COMPILER";
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|         break;
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|     case GL_DEBUG_SOURCE_THIRD_PARTY:
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|         srcStr = "THIRD_PARTY";
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|         break;
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|     case GL_DEBUG_SOURCE_APPLICATION:
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|         srcStr = "APPLICATION";
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|         break;
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|     case GL_DEBUG_SOURCE_OTHER:
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|         srcStr = "OTHER";
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|         break;
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|     default:
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|         srcStr = "UNDEFINED";
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|         break;
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|     }
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| 
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|     std::string typeStr;
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| 
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|     Debug::Level logSeverity = Debug::Warning;
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|     switch (type)
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|     {
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|     case GL_DEBUG_TYPE_ERROR:
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|         typeStr = "ERROR";
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|         logSeverity = Debug::Error;
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|         break;
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|     case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
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|         typeStr = "DEPRECATED_BEHAVIOR";
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|         break;
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|     case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
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|         typeStr = "UNDEFINED_BEHAVIOR";
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|         break;
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|     case GL_DEBUG_TYPE_PORTABILITY:
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|         typeStr = "PORTABILITY";
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|         break;
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|     case GL_DEBUG_TYPE_PERFORMANCE:
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|         typeStr = "PERFORMANCE";
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|         break;
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|     case GL_DEBUG_TYPE_OTHER:
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|         typeStr = "OTHER";
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|         break;
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|     default:
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|         typeStr = "UNDEFINED";
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|         break;
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|     }
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| 
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|     Log(logSeverity) << "OpenGL " << typeStr << " [" << srcStr << "]: " << message;
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| #endif
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| }
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| 
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| void enableGLDebugExtension(unsigned int contextID)
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| {
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| #ifdef GL_DEBUG_OUTPUT
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|     typedef void (GL_APIENTRY *DEBUGPROC)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam);
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|     typedef void (GL_APIENTRY *GLDebugMessageControlFunction)(GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
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|     typedef void (GL_APIENTRY *GLDebugMessageCallbackFunction)(DEBUGPROC, const void* userParam);
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|     
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|     GLDebugMessageControlFunction glDebugMessageControl = nullptr;
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|     GLDebugMessageCallbackFunction glDebugMessageCallback = nullptr;
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| 
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|     if (osg::isGLExtensionSupported(contextID, "GL_KHR_debug"))
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|     {
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|         osg::setGLExtensionFuncPtr(glDebugMessageCallback, "glDebugMessageCallback");
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|         osg::setGLExtensionFuncPtr(glDebugMessageControl, "glDebugMessageControl");
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|     }
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|     else if (osg::isGLExtensionSupported(contextID, "GL_ARB_debug_output"))
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|     {
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|         osg::setGLExtensionFuncPtr(glDebugMessageCallback, "glDebugMessageCallbackARB");
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|         osg::setGLExtensionFuncPtr(glDebugMessageControl, "glDebugMessageControlARB");
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|     }
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|     else if (osg::isGLExtensionSupported(contextID, "GL_AMD_debug_output"))
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|     {
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|         osg::setGLExtensionFuncPtr(glDebugMessageCallback, "glDebugMessageCallbackAMD");
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|         osg::setGLExtensionFuncPtr(glDebugMessageControl, "glDebugMessageControlAMD");
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|     }
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| 
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|     if (glDebugMessageCallback && glDebugMessageControl)
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|     {
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|         glEnable(GL_DEBUG_OUTPUT);
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|         glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_ERROR, GL_DEBUG_SEVERITY_MEDIUM, 0, nullptr, true);
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|         glDebugMessageCallback(debugCallback, nullptr);
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| 
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|         Log(Debug::Info) << "OpenGL debug callback attached.";
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|     }
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|     else
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| #endif
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|         Log(Debug::Error) << "Unable to attach OpenGL debug callback.";
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| }
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| 
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| Debug::EnableGLDebugOperation::EnableGLDebugOperation() : osg::GraphicsOperation("EnableGLDebugOperation", false)
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| {
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| }
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| 
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| void Debug::EnableGLDebugOperation::operator()(osg::GraphicsContext* graphicsContext)
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| {
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|     OpenThreads::ScopedLock<OpenThreads::Mutex> lock(mMutex);
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| 
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|     unsigned int contextID = graphicsContext->getState()->getContextID();
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|     enableGLDebugExtension(contextID);
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| }
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| 
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| bool Debug::shouldDebugOpenGL()
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| {
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|     const char* env = std::getenv("OPENMW_DEBUG_OPENGL");
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|     if (!env)
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|         return false;
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|     std::string str(env);
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|     if (str.length() == 0)
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|         return true;
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| 
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|     return str.find("OFF") == std::string::npos && str.find("0") == std::string::npos && str.find("NO") == std::string::npos;
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| }
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