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 "llrender.h"

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

#include "llglheaders.h"

#ifdef _DEBUG
//#define GL_STATE_VERIFY
#endif


BOOL gDebugSession = FALSE;
BOOL gDebugGL = FALSE;
BOOL gClothRipple = FALSE;
BOOL gHeadlessClient = FALSE;
BOOL gGLActive = FALSE;

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");

std::ofstream gFailLog;

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;

#if (LL_WINDOWS || LL_LINUX || LL_SOLARIS)  && !LL_MESA_HEADLESS
// ATI prototypes
// vertex blending prototypes
PFNGLWEIGHTPOINTERARBPROC			glWeightPointerARB = NULL;
PFNGLVERTEXBLENDARBPROC				glVertexBlendARB = NULL;
PFNGLWEIGHTFVARBPROC				glWeightfvARB = NULL;

// Vertex buffer object prototypes
PFNGLBINDBUFFERARBPROC				glBindBufferARB = NULL;
PFNGLDELETEBUFFERSARBPROC			glDeleteBuffersARB = NULL;
PFNGLGENBUFFERSARBPROC				glGenBuffersARB = NULL;
PFNGLISBUFFERARBPROC				glIsBufferARB = NULL;
PFNGLBUFFERDATAARBPROC				glBufferDataARB = NULL;
PFNGLBUFFERSUBDATAARBPROC			glBufferSubDataARB = NULL;
PFNGLGETBUFFERSUBDATAARBPROC		glGetBufferSubDataARB = NULL;
PFNGLMAPBUFFERARBPROC				glMapBufferARB = NULL;
PFNGLUNMAPBUFFERARBPROC				glUnmapBufferARB = NULL;
PFNGLGETBUFFERPARAMETERIVARBPROC	glGetBufferParameterivARB = NULL;
PFNGLGETBUFFERPOINTERVARBPROC		glGetBufferPointervARB = NULL;

// vertex object prototypes
PFNGLNEWOBJECTBUFFERATIPROC			glNewObjectBufferATI = NULL;
PFNGLISOBJECTBUFFERATIPROC			glIsObjectBufferATI = NULL;
PFNGLUPDATEOBJECTBUFFERATIPROC		glUpdateObjectBufferATI = NULL;
PFNGLGETOBJECTBUFFERFVATIPROC		glGetObjectBufferfvATI = NULL;
PFNGLGETOBJECTBUFFERIVATIPROC		glGetObjectBufferivATI = NULL;
PFNGLFREEOBJECTBUFFERATIPROC		glFreeObjectBufferATI = NULL;
PFNGLARRAYOBJECTATIPROC				glArrayObjectATI = NULL;
PFNGLVERTEXATTRIBARRAYOBJECTATIPROC	glVertexAttribArrayObjectATI = NULL;
PFNGLGETARRAYOBJECTFVATIPROC		glGetArrayObjectfvATI = NULL;
PFNGLGETARRAYOBJECTIVATIPROC		glGetArrayObjectivATI = NULL;
PFNGLVARIANTARRAYOBJECTATIPROC		glVariantObjectArrayATI = NULL;
PFNGLGETVARIANTARRAYOBJECTFVATIPROC	glGetVariantArrayObjectfvATI = NULL;
PFNGLGETVARIANTARRAYOBJECTIVATIPROC	glGetVariantArrayObjectivATI = NULL;

// GL_ARB_occlusion_query
PFNGLGENQUERIESARBPROC glGenQueriesARB = NULL;
PFNGLDELETEQUERIESARBPROC glDeleteQueriesARB = NULL;
PFNGLISQUERYARBPROC glIsQueryARB = NULL;
PFNGLBEGINQUERYARBPROC glBeginQueryARB = NULL;
PFNGLENDQUERYARBPROC glEndQueryARB = NULL;
PFNGLGETQUERYIVARBPROC glGetQueryivARB = NULL;
PFNGLGETQUERYOBJECTIVARBPROC glGetQueryObjectivARB = NULL;
PFNGLGETQUERYOBJECTUIVARBPROC glGetQueryObjectuivARB = NULL;

// GL_ARB_point_parameters
PFNGLPOINTPARAMETERFARBPROC glPointParameterfARB = NULL;
PFNGLPOINTPARAMETERFVARBPROC glPointParameterfvARB = NULL;

// GL_ARB_framebuffer_object
PFNGLISRENDERBUFFERPROC glIsRenderbuffer = NULL;
PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer = NULL;
PFNGLDELETERENDERBUFFERSPROC glDeleteRenderbuffers = NULL;
PFNGLGENRENDERBUFFERSPROC glGenRenderbuffers = NULL;
PFNGLRENDERBUFFERSTORAGEPROC glRenderbufferStorage = NULL;
PFNGLGETRENDERBUFFERPARAMETERIVPROC glGetRenderbufferParameteriv = NULL;
PFNGLISFRAMEBUFFERPROC glIsFramebuffer = NULL;
PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer = NULL;
PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers = NULL;
PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers = NULL;
PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus = NULL;
PFNGLFRAMEBUFFERTEXTURE1DPROC glFramebufferTexture1D = NULL;
PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D = NULL;
PFNGLFRAMEBUFFERTEXTURE3DPROC glFramebufferTexture3D = NULL;
PFNGLFRAMEBUFFERRENDERBUFFERPROC glFramebufferRenderbuffer = NULL;
PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glGetFramebufferAttachmentParameteriv = NULL;
PFNGLGENERATEMIPMAPPROC glGenerateMipmap = NULL;
PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer = NULL;
PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC glRenderbufferStorageMultisample = NULL;
PFNGLFRAMEBUFFERTEXTURELAYERPROC glFramebufferTextureLayer = NULL;

// GL_EXT_blend_func_separate
PFNGLBLENDFUNCSEPARATEEXTPROC glBlendFuncSeparateEXT = NULL;

// GL_ARB_draw_buffers
PFNGLDRAWBUFFERSARBPROC glDrawBuffersARB = NULL;

//shader object prototypes
PFNGLDELETEOBJECTARBPROC glDeleteObjectARB = NULL;
PFNGLGETHANDLEARBPROC glGetHandleARB = NULL;
PFNGLDETACHOBJECTARBPROC glDetachObjectARB = NULL;
PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB = NULL;
PFNGLSHADERSOURCEARBPROC glShaderSourceARB = NULL;
PFNGLCOMPILESHADERARBPROC glCompileShaderARB = NULL;
PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB = NULL;
PFNGLATTACHOBJECTARBPROC glAttachObjectARB = NULL;
PFNGLLINKPROGRAMARBPROC glLinkProgramARB = NULL;
PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB = NULL;
PFNGLVALIDATEPROGRAMARBPROC glValidateProgramARB = NULL;
PFNGLUNIFORM1FARBPROC glUniform1fARB = NULL;
PFNGLUNIFORM2FARBPROC glUniform2fARB = NULL;