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/**
* @file llglimmediate.h
* @brief LLGLImmediate definition
*
* This class acts as a wrapper for OpenGL immediate calls concerning glBegin and glEnd.
* The goal of this class is to minimize the number of api calls due to legacy rendering
* code, and to define an interface for a multiple rendering API abstraction of the UI
* rendering.
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2008, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLGLIMMEDIATE_H
#define LL_LLGLIMMEDIATE_H
#include "stdtypes.h"
#include "llgltypes.h"
#include "llglheaders.h"
class LLGLImmediate
{
public:
LLGLImmediate();
void translatef(const GLfloat& x, const GLfloat& y, const GLfloat& z);
void pushMatrix();
void popMatrix();
void blendFunc(GLenum sfactor, GLenum dfactor);
void start();
void stop();
void flush();
void begin(const GLuint& mode);
void end();
void vertex2i(const GLint& x, const GLint& y);
void vertex2f(const GLfloat& x, const GLfloat& y);
void vertex3f(const GLfloat& x, const GLfloat& y, const GLfloat& z);
void vertex2fv(const GLfloat* v);
void vertex3fv(const GLfloat* v);
void texCoord2i(const GLint& x, const GLint& y);
void texCoord2f(const GLfloat& x, const GLfloat& y);
void texCoord2fv(const GLfloat* tc);
void color4ub(const GLubyte& r, const GLubyte& g, const GLubyte& b, const GLubyte& a);
void color4f(const GLfloat& r, const GLfloat& g, const GLfloat& b, const GLfloat& a);
void color4fv(const GLfloat* c);
void color3f(const GLfloat& r, const GLfloat& g, const GLfloat& b);
void color3fv(const GLfloat* c);
void color4ubv(const GLubyte* c);
// switch clever mode GL immediate rendering on or off. Setting to true builds
// client arrays manually, setting to false passes through the GL immediate mode
// commands to the GL implementation. Controllable by the RenderUseCleverUI
// debug setting.
// *NOTE: I have measured that this has about a 9% performance cost (0.6ms) for the
// Render/UI fasttimer vs the old #if CLEVER compile time switch. Dave Parks and I
// agreed that this was acceptable at the time due to it enabling better regression
// testing for QA.
// -Brad
void setClever(bool do_clever);
typedef struct Vertex
{
GLfloat v[3];
GLubyte c[4];
GLfloat uv[2];
};
public:
static BOOL sStarted;
private:
static bool sClever;
U32 mCount;
U32 mMode;
Vertex mBuffer[4096];
};
extern LLGLImmediate gGL;
#endif
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