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view src/video/wscons/SDL_wsconsvideo.h @ 2359:b70b96e615d2 gsoc2008_iphone

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These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver. There are a few differences between OpenGL and OpenGL ES that present difficulties for this driver: - OpenGL ES does NOT support many pixel formats (for example, no GL_BGR). Also, when using texture functions format and internalFormat must be the same -- this means 32 bit packed formats like SDL_PIXELFORMAT_BGR888 cannot be automatically converted to GL_RGB (which is 24bpp). - OpenGL ES doesn't have GL_PACK_ROW_LENGTH, which means data must be reformatted before uploading changes to dirty rects. This change has been added. - OpenGL ES doesn't support paletted textures, though there is an extension. I'm looking into this. Some other notable differences: - OpenGL ES has an extension called GL_OES_draw_texture which allows for quicker 2D sprite-type drawing. I use this in GL_RenderCopy when it is available. The iPhone supports the extension, but the iPhone Simulator does not (presently). - No glBegin() / glEnd() and no GL_QUADS! I'm using glDrawArrays with GL_TRIANGLE_STRIP instead!
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Thu, 17 Jul 2008 23:31:42 +0000
parents c121d94672cb
children 99210400e8b9
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    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; either
    version 2.1 of the License, or (at your option) any later version.

    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 St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifndef _SDL_wsconsvideo_h
#define _SDL_wsconsvideo_h

#include <sys/time.h>
#include <termios.h>
#include <dev/wscons/wsconsio.h>

#include "SDL_mouse.h"
#include "SDL_mutex.h"
#include "../SDL_sysvideo.h"

void WSCONS_ReportError(char *fmt, ...);

/* Hidden "this" pointer for the video functions */
#define _THIS	SDL_VideoDevice *this
#define private	(this->hidden)

/* Private display data */

typedef void WSCONS_bitBlit(Uint8 * src_pos, int srcRightDelta, // pixels, not bytes
                            int srcDownDelta,   // pixels, not bytes
                            Uint8 * dst_pos,
                            int dst_linebytes, int width, int height);

struct SDL_PrivateVideoData
{
    int fd;                     /* file descriptor of open device */
    struct wsdisplay_fbinfo info;       /* frame buffer characteristics */
    int physlinebytes;          /* number of bytes per row */
    int redMask, greenMask, blueMask;

    Uint8 *fbstart;             /* These refer to the surface used, */
    int fblinebytes;            /* physical frame buffer or shadow. */

    size_t fbmem_len;
    Uint8 *physmem;
    Uint8 *shadowmem;
    int rotate;
    int shadowFB;               /* Tells whether a shadow is being used. */

    WSCONS_bitBlit *blitFunc;

    SDL_Rect *SDL_modelist[2];

    unsigned int kbdType;
    int did_save_tty;
    struct termios saved_tty;
};


#endif /* _SDL_wsconsvideo_h */
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