Mercurial > sdl-ios-xcode
view src/video/nanox/SDL_nxmouse.c @ 2359:b70b96e615d2 gsoc2008_iphone
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
line source
/* 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" #include "../../events/SDL_events_c.h" #include "SDL_nxmouse_c.h" // The implementation dependent data for the window manager cursor struct WMcursor { int unused; }; WMcursor * NX_CreateWMCursor(_THIS, Uint8 * data, Uint8 * mask, int w, int h, int hot_x, int hot_y) { WMcursor *cursor; Dprintf("enter NX_CreateWMCursor\n"); cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor)); if (cursor == NULL) { SDL_OutOfMemory(); return NULL; } Dprintf("leave NX_CreateWMCursor\n"); return cursor; } void NX_FreeWMCursor(_THIS, WMcursor * cursor) { Dprintf("NX_FreeWMCursor\n"); SDL_free(cursor); return; } void NX_WarpWMCursor(_THIS, Uint16 x, Uint16 y) { GR_WINDOW_INFO info; Dprintf("enter NX_WarpWMCursor\n"); SDL_Lock_EventThread(); GrGetWindowInfo(SDL_Window, &info); GrMoveCursor(info.x + x, info.y + y); SDL_Unlock_EventThread(); Dprintf("leave NX_WarpWMCursor\n"); } int NX_ShowWMCursor(_THIS, WMcursor * cursor) { Dprintf("NX_ShowWMCursor\n"); return 1; } /* vi: set ts=4 sw=4 expandtab: */