Mercurial > sdl-ios-xcode
view src/video/Xext/extensions/Xv.h @ 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> |
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date | Thu, 17 Jul 2008 23:31:42 +0000 |
parents | c121d94672cb |
children |
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/*********************************************************** Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts, and the Massachusetts Institute of Technology, Cambridge, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the names of Digital or MIT not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ /* $XFree86: xc/include/extensions/Xv.h,v 1.5 1999/12/11 19:28:48 mvojkovi Exp $ */ #ifndef XV_H #define XV_H /* ** File: ** ** Xv.h --- Xv shared library and server header file ** ** Author: ** ** David Carver (Digital Workstation Engineering/Project Athena) ** ** Revisions: ** ** 05.15.91 Carver ** - version 2.0 upgrade ** ** 01.24.91 Carver ** - version 1.4 upgrade ** */ #include <X11/X.h> #define XvName "XVideo" #define XvVersion 2 #define XvRevision 2 /* Symbols */ typedef XID XvPortID; typedef XID XvEncodingID; #define XvNone 0 #define XvInput 0 #define XvOutput 1 #define XvInputMask (1L<<XvInput) #define XvOutputMask (1L<<XvOutput) #define XvVideoMask 0x00000004 #define XvStillMask 0x00000008 #define XvImageMask 0x00000010 /* These two are not client viewable */ #define XvPixmapMask 0x00010000 #define XvWindowMask 0x00020000 #define XvGettable 0x01 #define XvSettable 0x02 #define XvRGB 0 #define XvYUV 1 #define XvPacked 0 #define XvPlanar 1 #define XvTopToBottom 0 #define XvBottomToTop 1 /* Events */ #define XvVideoNotify 0 #define XvPortNotify 1 #define XvNumEvents 2 /* Video Notify Reasons */ #define XvStarted 0 #define XvStopped 1 #define XvBusy 2 #define XvPreempted 3 #define XvHardError 4 #define XvLastReason 4 #define XvNumReasons (XvLastReason + 1) #define XvStartedMask (1L<<XvStarted) #define XvStoppedMask (1L<<XvStopped) #define XvBusyMask (1L<<XvBusy) #define XvPreemptedMask (1L<<XvPreempted) #define XvHardErrorMask (1L<<XvHardError) #define XvAnyReasonMask ((1L<<XvNumReasons) - 1) #define XvNoReasonMask 0 /* Errors */ #define XvBadPort 0 #define XvBadEncoding 1 #define XvBadControl 2 #define XvNumErrors 3 /* Status */ #define XvBadExtension 1 #define XvAlreadyGrabbed 2 #define XvInvalidTime 3 #define XvBadReply 4 #define XvBadAlloc 5 #endif /* XV_H */ /* vi: set ts=4 sw=4 expandtab: */