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view src/video/photon/SDL_ph_image_c.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_PH_IMAGE_H__
#define __SDL_PH_IMAGE_H__

#include "../../events/SDL_events_c.h"
#include "SDL_ph_video.h"

struct private_hwdata
{
    PdOffscreenContext_t *offscreenctx;
    PdOSCCreateLockParams_t crlockparam;
    PdOSCLockParams_t lockparam;
    Uint32 colorkey;
};

extern int ph_SetupImage(_THIS, SDL_Surface * screen);
extern void ph_DestroyImage(_THIS, SDL_Surface * screen);
extern int ph_SetupUpdateFunction(_THIS, SDL_Surface * screen, Uint32 flags);

extern int ph_AllocHWSurface(_THIS, SDL_Surface * surface);
extern void ph_FreeHWSurface(_THIS, SDL_Surface * surface);
extern int ph_CheckHWBlit(_THIS, SDL_Surface * src, SDL_Surface * dst);
extern int ph_FillHWRect(_THIS, SDL_Surface * surface, SDL_Rect * rect,
                         Uint32 color);
extern int ph_LockHWSurface(_THIS, SDL_Surface * surface);
extern void ph_UnlockHWSurface(_THIS, SDL_Surface * surface);
extern int ph_FlipHWSurface(_THIS, SDL_Surface * surface);
extern int ph_SetHWColorKey(_THIS, SDL_Surface * surface, Uint32 key);
extern int ph_SetHWAlpha(_THIS, SDL_Surface * surface, Uint8 alpha);
extern int ph_HWAccelBlit(SDL_Surface * src, SDL_Rect * srcrect,
                          SDL_Surface * dst, SDL_Rect * dstrect);
extern int ph_UpdateHWInfo(_THIS);

extern void ph_NormalUpdate(_THIS, int numrects, SDL_Rect * rects);
extern void ph_OCUpdate(_THIS, int numrects, SDL_Rect * rects);
extern void ph_OCDCUpdate(_THIS, int numrects, SDL_Rect * rects);
extern void ph_OpenGLUpdate(_THIS, int numrects, SDL_Rect * rects);

#endif /* __SDL_PH_IMAGE_H__ */
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