Mesa 3.5 release notes
- Month ??, 2000
+ June 21, 2001
PLEASE READ!!!!
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
-Odd numbered versions (such as 3.3) designate new developmental releases.
+Odd numbered versions (such as 3.5) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
-The internal structure of Mesa 3.5 is (will be) changed so that it
-is more modular. The motivation is better support of 3D hardware
-such as T&L hardware in which much of core Mesa isn't needed.
+The biggest change in Mesa 3.5 is a complete overhaul of the source
+code in order to make it more modular. This was driven by the DRI
+hardware drivers. It simplifies the DRI drivers and opens the door
+to hardware transform/clip/lighting (TCL). Keith Whitwell can take
+the credit for that.
-Details to come...
+
+
+Driver Support
+--------------
+
+The device driver interface in Mesa 3.5 has changed a lot since Mesa 3.4
+Not all of the older Mesa drivers have been updated. Here's the status:
+
+Driver Status
+---------------------- -----------
+XMesa (Xlib) updated
+OSMesa (off-screen) updated
+FX (3dfx Voodoo1/2) updated
+SVGA updated
+GGI not updated
+Windows/Win32 not updated
+DOS/DJGPP not updated
+BeOS not updated
+Allegro not updated
+D3D not updated
+DOS not updated
+
+We're looking for volunteers to update the remaining drivers. Please
+post to the Mesa3d-dev mailing list if you can help.
+
+
+
+GLU 1.3
+-------
+
+Mesa 3.5 includes the SGI Sample Implementation (SI) GLU library.
+This version of GLU supports the GLU 1.3 specification. The old
+Mesa GLU library implemented the 1.1 specification. The SI GLU
+library should work much better.
+
+You'll need a C++ compiler to compile the SI GLU library. This may
+be a problem on some systems.
Adds extra blend source and dest factors which allow squaring
of color values.
+GL_EXT_fog_coord
+ Allows specification of a per-vertex fog coordinate instead of
+ having fog always computed from the eye distance.
+
+GL_EXT_secondary_color
+ Allows specifying the secondary (specular) color for each vertex
+ instead of getting it only from lighting in GL_SEPARATE_SPECULAR_COLOR
+ mode.
+
+GL_ARB_texture_env_combine
+ Basically the same as GL_EXT_texture_env_combine
+
+GL_ARB_texture_env_add extension
+ Texture addition mode.
+
+GL_ARB_texture_env_dot3 extension
+ Dot product texture environment.
+
+GL_ARB_texture_border_clamp
+ Adds GL_CLAMP_TO_BORDER_ARB texture wrap mode
+
+GL_SGIX_depth_texture, GL_SGIX_shadow and GL_SGIX_shadow_ambient
+ Implements a shadow casting algorithm based on depth map textures
+
+GL_SGIS_generate_mipmap
+ Automatically generate lower mipmap images whenever the base mipmap
+ image is changed with glTexImage, glCopyTexImage, etc.
+
libOSMesa.so
tested since I can't test some platforms (DOS, Windows, Allegro, etc).
-Multitexture
-------------
+X/Mesa Driver
+-------------
+
+The source files for the X/Mesa driver in src/X have been renamed.
+The xmesa[1234].c files are gone. The new files are xm_api.c,
+xm_dd.c, xm_line.c, xm_span.c and xm_tri.c.
-Three texture units are now supported by default. We'll allow more
-than three texture units when we fix some bitfield issues. In at least
-one place we have a 32-bit bitfield which is fully allocated, leaving
-no space for texture unit #3 or higher.
-The TEXTURE1_1D, TEXTURE1_2D, etc constants may go away in the future.
-Currently, they're only used in the ctx->Texture.ReallyEnabled field.
-This bitfield is just a conglomerate of ctx->Texture.Unit[i].ReallyEnabled
-for all <i> texture units. ctx->Texture.ReallyEnabled may become a
-GLboolean. Then, drivers will have to loop over the texture units to
-examine ctx->Texture.Unit[i].ReallyEnabled.
+Multitexture
+------------
+
+Eight texture units are now supported by default.
5. New file: imports.c to setup default import functions for Mesa.
+
+
+16-bit color channels
+---------------------
+
+There's experimental support for 16-bit color channels (64-bit pixels)
+in Mesa 3.5. Only the OSMesa interface can be used for 16-bit rendering.
+Type "make linux-osmesa16" in the top-level directory to build the
+special libOSMesa16.so library.
+
+This hasn't been tested very thoroughly yet so please file bug reports
+if you have trouble.
+
+In the future I hope to implement support for 32-bit, floating point
+color channels.
+
----------------------------------------------------------------------
-$Id: RELNOTES-3.5,v 1.6 2000/10/23 19:46:11 brianp Exp $
projects / mesa.git / blobdiff