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From: "Mattias Engdeg�rd" <f91-men@nada.kth.se> To: slouken@devolution.com Subject: Re: [SDL] Question about SDL_FillRect() I benchmarked with and without clipping UpdateRects and was unable to find any difference on my moderately slow machine. Anyway, I haven't added clipping in this patch, but fixed a couple of bugs and generally cleaned up some of the X11 image code. Most importantly, UpdateRects now checks for both zero height and width. Also, I eliminated the entire code to byteswap X11 images since X11 can do that automatically if you ask it nicely :-)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 18 Jan 2002 22:02:03 +0000
parents 57bf11a5efd7
children 26dafefeebb2
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  =================================================================
  Patch version 0.8 of SDL(Simple DirectMedia Layer) for Nano-X API
  =================================================================
  
  Author: Hsieh-Fu Tsai, clare@setabox.com

  There are two patch files in this package. 

  1. The first patch file, nanox.patch, is to fix a bug in Nano-X. 
     This patch is proposed by Gary James (gjames@twcny.rr.com).

  It fixes the client side GrClose(). In the original version, 
  GrOpen() can only be called once. When the GrOpen() is called at 
  the second time, the program will terminate. In order to prevent
  this situation, we need to insert "nxSocket = -1" after 
  "close(nxSocket)" in GrClose(). If you do not have this problem,
  you may skip this step. 

  =============
  Quick Install 
  =============

  1. ./configure --disable-video-x11 --disable-video-fbcon \ 
       --enable-video-nanox \ 
       --with-nanox-pixel-type=[rgb/0888/888/565/555/332/pal] 
  2. make clean 
  3. make 
  4. make install (as root) 

  ============
  Nitty-gritty 
  ============

  --with-nanox-pixel-type=[rgb/0888/888/565/555/332/pal] 

  If the wrong pixel type is used, the program will crash when the 
  sub-routine updates the screen. This option depends on SCREEN_PIXTYPE 
  which is defined in Microwin0.89pre7/src/config. SCREEN_PIXTYPE 
  is used to define the pixel type in Microwindows/Nano-X. 
  I only test the program when the pixel type is in "rgb" 
  (Microwin under X11) or "888" (framebuffer in 24-bit).

  --enable-nanox-debug           Show debug messages 
  --enable-nanox-share-memory    Use shared-memory to speed up 

  =============================================
  Some programs can be used to test this patch. 
  =============================================

  1. http://www.cs.berkeley.edu/~weimer/atris (a tetris-like game) 
  2. http://www.libsdl.org/projects/newvox/
  3. http://www.libsdl.org/projects/xflame/
  4. http://www.libsdl.org/projects/optimum/ 
  5. http://www.gnugeneration.com/software/loop/ 
    
  =========
  Todo List 
  =========

  1. Create hardware surface
  2. Create YUVOverlay on hardware
  3. Use OpenGL
  4. Gamma correction
  5. Hide/Change mouse pointer

  =====================
  Supporting Institutes
  =====================
  
  Many thanks to go to Setabox Co., Ltd. and CML (Communication and
  Multimedia Laboratory, http://www.cmlab.csie.ntu.edu.tw/) in the 
  Department of Computer Science and Information Engineering of 
  National Taiwan University for supporting this porting project.
  
  ===================
  Contact Information
  ===================

  Welcome to give me any suggestion and to report bugs.
  My e-mail address : clare@setabox.com or niky@cmlab.csie.ntu.edu.tw