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Date: Sat, 24 Aug 2002 22:20:01 -0600 From: "Greg Haerr" Subject: Announce: sdl-nanox-patch Sam, I've created an update patch for enhanced Nano-X support with SDL. I've created the patch against SDL-1.2.4. I'd appreciate it if you would apply it to the next SDL version. Enhancements include: 1. Small bugfixes to compile without errors 2. Support for direct client-side framebuffer access with configure option 3. Add dynamic pixel type support for hardware framebuffer; eliminating the need for compile-time configuration option. I've updated the README.NanoX file with the details. This version has been tested with Microwindows v0.89pre9 CVS and SMPEG 0.4.4. I've added multi-threading support to Microwindows to support the multi-threaded SMPEG, and all works fine. To turn on thread safety in Microwindows, use THREADSAFE=Y in the Microwindows config file. Thanks! Regards, Greg Founder, The Microwindows Project http://microwindows.org
author Sam Lantinga <slouken@libsdl.org>
date Sun, 25 Aug 2002 06:21:49 +0000
parents 57bf11a5efd7
children
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--- a/README.NanoX	Sun Aug 25 02:05:24 2002 +0000
+++ b/README.NanoX	Sun Aug 25 06:21:49 2002 +0000
@@ -1,14 +1,23 @@
   =================================================================
-  Patch version 0.8 of SDL(Simple DirectMedia Layer) for Nano-X API
+  Patch version 0.9 of SDL(Simple DirectMedia Layer) for Nano-X API
   =================================================================
   
-  Author: Hsieh-Fu Tsai, clare@setabox.com
-
-  There are two patch files in this package. 
+  Authors: Hsieh-Fu Tsai, clare@setabox.com
+           Greg Haerr, greg@censoft.com
 
-  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).
+  This patch is against SDL version 1.2.4.
+  It enhances previous patch 0.8 by providing direct framebuffer
+  access as well as dynamic hardware pixel type support, not
+  requiring a compile-time option setting for different framebuffer
+  modes.
+  Tested against Microwindows version 0.89pre9.
 
+  Older Microwindows versions
+  ===========================
+  If running on a version older than Microwindows 0.89pre9,
+  the following items might need to be patched in Microwindows.
+
+  1. Patch src/nanox/client.c::GrClose()
   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
@@ -16,6 +25,11 @@
   "close(nxSocket)" in GrClose(). If you do not have this problem,
   you may skip this step. 
 
+  2. Patch src/nanox/clientfb.c to return absolute x,y coordinates
+  when using GrGetWindowFBInfo().  Copy the version 0.89pre9
+  of src/nanox/clientfb.c to your system, or configure
+  using --disable-nanox-direct-fb.
+
   =============
   Quick Install 
   =============
@@ -31,18 +45,14 @@
   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-direct-fb       Use direct framebuffer access
   --enable-nanox-debug           Show debug messages 
   --enable-nanox-share-memory    Use shared-memory to speed up 
 
+  When running multi-threaded applications using SDL, such
+  as SMPEG, set THREADSAFE=Y in Microwindows' config file,
+  to enable GrXXX() system call critical section support.
+
   =============================================
   Some programs can be used to test this patch. 
   =============================================
@@ -52,7 +62,8 @@
   3. http://www.libsdl.org/projects/xflame/
   4. http://www.libsdl.org/projects/optimum/ 
   5. http://www.gnugeneration.com/software/loop/ 
-    
+  6: http://www.lokigames.com/development/smpeg.php3 (SMPEG version 0.4.4)
+
   =========
   Todo List 
   =========
@@ -62,6 +73,8 @@
   3. Use OpenGL
   4. Gamma correction
   5. Hide/Change mouse pointer
+  6. Better window movement control with direct fb access
+  7. Palette handling in 8bpp could be improved
 
   =====================
   Supporting Institutes
@@ -72,10 +85,13 @@
   Department of Computer Science and Information Engineering of 
   National Taiwan University for supporting this porting project.
   
+  Century Embedded Technologies (http://embedded.censoft.com)
+  for this patch.
+
   ===================
   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
-  
+                      or greg@censoft.com