// *******************************

// FILE: gpu2d.h

// AUTHOR: SharpCoder

// DATE: 2012-03-27

// ABOUT: This is the 2D graphics engine (re written) for my

// raspberry pi kernel. I'm trying to implement some

// nicer functions and a backbuffer to make everything

// smoother.

//

// LICENSE: Provided "AS IS". USE AT YOUR OWN RISK.

// *******************************

#ifndef __GPU2D_H_

#define __GPU2D_H_

// Include the common library.

#include "common.h"

#include "raspberrylib.h"

#include "mem.h"

class FB_Info {

public:

uint32 screen_width;

uint32 screen_height;

uint32 virtual_width;

uint32 virtual_height;

uint32 pitch;

uint32 depth;

uint32 xoffset;

uint32 yoffset;

uint32 framePtr;

uint32 bufferSize;

};

// Define some of the basic functions

class gpu2dCanvas {

public:

// Constructor

gpu2dCanvas( void );

gpu2dCanvas( bool useDoubleBuffer );

// Basic methods.

void Draw( void );

void DrawLine( int x1, int y1, int x2, int y2, uint32 color );

void DrawCharacter( int x, int y, char c, uint32 color );

void ClearCharacter( int x, int y );

void Clear( uint32 color );

// Basic properties.

bool valid;

private:

bool switched;

bool enableDoubleBuffer;

FB_Info* fbInfo;

bool initFrameBuffer( void );

void sync( void );

void setPixel( uint32 x, uint32 y, uint32 color );

};

#endif