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view src/video/nanox/SDL_nxvideo.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
line wrap: on
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga
    Copyright (C) 2001  Hsieh-Fu Tsai

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
    
    Hsieh-Fu Tsai
    clare@setabox.com
*/
#include "SDL_config.h"

#ifndef _SDL_nxvideo_h
#define _SDL_nxvideo_h

#include <microwin/nano-X.h>

#include "../SDL_sysvideo.h"

#ifdef ENABLE_NANOX_DEBUG
#define Dprintf printf
#else
#define Dprintf(ignore...)
#endif

// Hidden "this" pointer for the video functions
#define _THIS   SDL_VideoDevice * this

// Private display data
typedef struct NX_SDL_VISUAL
{
    int bpp;
    Uint32 red_mask;
    Uint32 green_mask;
    Uint32 blue_mask;
} nx_sdl_visual_t;

struct SDL_PrivateVideoData
{
    GR_WINDOW_ID SDL_Window;
    GR_WINDOW_ID FSwindow;
    // Flag: true if we have been passed a window
    char *SDL_windowid;
    GR_GC_ID GC;
    unsigned char *Image;
    unsigned char *Image_buff;  /* for GrArea */
    unsigned char *Clientfb;    /* for DirectFB */
    nx_sdl_visual_t SDL_Visual;
    // The current list of available video modes
    SDL_Rect **modelist;
    int currently_fullscreen;
    // for fullscreen
    int OffsetX, OffsetY;
    // for GammaRamp
    Uint16 *GammaRamp_R, *GammaRamp_G, *GammaRamp_B;
    // for GrArea, r_mask, g_mask, b_mask
    int pixel_type;
#ifdef ENABLE_NANOX_DIRECT_FB
    GR_WINDOW_FB_INFO fbinfo;
#endif
};

#define SDL_Window           (this -> hidden -> SDL_Window)
#define FSwindow             (this -> hidden -> FSwindow)
#define SDL_windowid         (this -> hidden -> SDL_windowid)
#define SDL_GC               (this -> hidden -> GC)
#define SDL_Image            (this -> hidden -> Image)
#define Image_buff           (this -> hidden -> Image_buff)
#define Clientfb             (this -> hidden -> Clientfb)
#define SDL_Visual           (this -> hidden -> SDL_Visual)
#define SDL_modelist         (this -> hidden -> modelist)
#define currently_fullscreen (this -> hidden -> currently_fullscreen)
#define OffsetX              (this -> hidden -> OffsetX)
#define OffsetY              (this -> hidden -> OffsetY)
#define GammaRamp_R          (this -> hidden -> GammaRamp_R)
#define GammaRamp_G          (this -> hidden -> GammaRamp_G)
#define GammaRamp_B          (this -> hidden -> GammaRamp_B)
#define pixel_type           (this -> hidden -> pixel_type)
#define fbinfo               (this -> hidden -> fbinfo)

#define CI_SIZE 256             // color index size

#endif // _SDL_nxvideo_h
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