llgl.cpp

/** 
 * @file llgl.cpp
 * @brief LLGL implementation
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

// This file sets some global GL parameters, and implements some 
// useful functions for GL operations.

#define GLH_EXT_SINGLE_FILE

#include "linden_common.h"

#include "boost/tokenizer.hpp"

#include "llsys.h"

#include "llgl.h"
#include "llglstates.h"
#include "llrender.h"

#include "llerror.h"
#include "llerrorcontrol.h"
#include "llquaternion.h"
#include "llmath.h"
#include "m4math.h"
#include "llstring.h"
#include "llstacktrace.h"

#include "llglheaders.h"
#include "llglslshader.h"

#if LL_WINDOWS
#include "lldxhardware.h"
#endif

#ifdef _DEBUG
//#define GL_STATE_VERIFY
#endif

#if LL_SDL
#include <SDL.h>
#endif


BOOL gDebugSession = FALSE;
BOOL gClothRipple = FALSE;
BOOL gHeadlessClient = FALSE;
BOOL gGLActive = FALSE;
BOOL gGLDebugLoggingEnabled = TRUE;

static const std::string HEADLESS_VENDOR_STRING("Linden Lab");
static const std::string HEADLESS_RENDERER_STRING("Headless");
static const std::string HEADLESS_VERSION_STRING("1.0");

llofstream gFailLog;

#ifndef APIENTRY
#define APIENTRY
#endif

void APIENTRY gl_debug_callback(GLenum source,
	GLenum type,
	GLuint id,
	GLenum severity,
	GLsizei length,
	const GLchar* message,
	GLvoid* userParam)
{
	if (gGLDebugLoggingEnabled)
	{
		if (severity == GL_DEBUG_SEVERITY_HIGH)
		{
			LL_WARNS() << "----- GL ERROR --------" << LL_ENDL;
		}
		else
		{
			LL_WARNS() << "----- GL WARNING -------" << LL_ENDL;
		}
		LL_WARNS() << "Type: " << std::hex << type << LL_ENDL;
		LL_WARNS() << "ID: " << std::hex << id << LL_ENDL;
		LL_WARNS() << "Severity: " << std::hex << severity << LL_ENDL;
		LL_WARNS() << "Message: " << message << LL_ENDL;
		LL_WARNS() << "-----------------------" << LL_ENDL;
		if (severity == GL_DEBUG_SEVERITY_HIGH)
		{
			LL_ERRS() << "Halting on GL Error" << LL_ENDL;
		}
	}
}

void parse_glsl_version(S32& major, S32& minor);

void ll_init_fail_log(std::string filename)
{
	gFailLog.open(filename.c_str());
}


void ll_fail(std::string msg)
{
	
	if (gDebugSession)
	{
		std::vector<std::string> lines;

		gFailLog << LLError::utcTime() << " " << msg << std::endl;

		gFailLog << "Stack Trace:" << std::endl;

		ll_get_stack_trace(lines);
		
		for(size_t i = 0; i < lines.size(); ++i)
		{
			gFailLog << lines[i] << std::endl;
		}

		gFailLog << "End of Stack Trace." << std::endl << std::endl;

		gFailLog.flush();
	}
};

void ll_close_fail_log()
{
	gFailLog.close();
}

LLMatrix4 gGLObliqueProjectionInverse;

#define LL_GL_NAME_POOLING 0

std::list<LLGLUpdate*> LLGLUpdate::sGLQ;

LLGLManager gGLManager;

LLGLManager::LLGLManager() :
	mInited(FALSE),
	mIsDisabled(FALSE),

	mHasMultitexture(FALSE),
	mHasATIMemInfo(FALSE),
	mHasAMDAssociations(FALSE),
	mHasNVXMemInfo(FALSE),
	mNumTextureUnits(1),
	mHasMipMapGeneration(FALSE),
	mHasCompressedTextures(FALSE),
	mHasFramebufferObject(FALSE),
	mMaxSamples(0),
	mHasBlendFuncSeparate(FALSE),
	mHasSync(FALSE),
	mHasVertexBufferObject(FALSE),
	mHasVertexArrayObject(FALSE),
	mHasMapBufferRange(FALSE),
	mHasFlushBufferRange(FALSE),
	mHasPBuffer(FALSE),
	mHasShaderObjects(FALSE),
	mHasVertexShader(FALSE),
	mHasFragmentShader(FALSE),
	mNumTextureImageUnits(0),
	mHasOcclusionQuery(FALSE),
	mHasTimerQuery(FALSE),
	mHasOcclusionQuery2(FALSE),
	mHasPointParameters(FALSE),
	mHasDrawBuffers(FALSE),
	mHasTextureRectangle(FALSE),
	mHasTextureMultisample(FALSE),
	mHasTransformFeedback(FALSE),
	mMaxSampleMaskWords(0),
	mMaxColorTextureSamples(0),
	mMaxDepthTextureSamples(0),
	mMaxIntegerSamples(0),

	mHasAnisotropic(FALSE),
	mHasARBEnvCombine(FALSE),
	mHasCubeMap(FALSE),
	mHasDebugOutput(FALSE),

	mHasTextureSwizzle(false),
	mIsATI(FALSE),