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diff --git a/docs/relnotes/6.1 b/docs/relnotes/6.1 new file mode 100644 index 00000000000..8de64d1f1c3 --- /dev/null +++ b/docs/relnotes/6.1 @@ -0,0 +1,111 @@ + + Mesa 6.1 release notes + + August 18, 2004 + + PLEASE READ!!!! + + + +Introduction +------------ + +Mesa uses an even/odd version number scheme like the Linux kernel. +Odd numbered versions (such as 6.1) designate new developmental releases. +Even numbered versions (such as 6.0) designate stable releases. + + +New Features +------------ + +Half-precision floating point (GLhalf) pixel formats are supported +in Mesa, but the feature isn't exposed yet since the ARB extension +hasn't been finalized yet. + + +Texture image handling +---------------------- + +The code which implements image conversion, pixel transfer ops, etc +for glTexImage commands has been rewritten. + +Now the gl_texture_format struct has a new StoreImage function +pointer. Each texture format must implement this function. The +function is totally responsible for converting the user's texture +image into the specific format. A few helper functions makes this +relatively simple. + +Overall, the code is much simpler, cleaner and easier to work with +now. Adding new texture formats is straight-forward and there's no +longer any distinction between "hardware" and "software" formats. + +Finally, the code for compressed texture images has been reorganized +as well. + +Removed files: + texutil.c + texutil.h + texutil_tmp.h + +New files: + texcompress_s3tc.c + texcompress_fxt1.c + + + +Driver / context changes +------------------------ + +The _mesa_create_context() and _mesa_initialize_context() function +parameters have changed. They now take a pointer to a struct +dd_function_table. Drivers can initialize this table by calling +_mesa_init_driver_functions(). Drivers should then plug in the special +functions they implement. In particular, the ctx->Driver.NewTextureObject +pointer _must_ be set so that the default texture objects created in +_mesa_create/initialize_context() are correctly built. + +The _mesa_init_driver_functions() function allows a lot of redundant code +to be removed from the device drivers (such as initializing +ctx->Driver.Accum to point to _swrast_Accum). Adding new functions to +the dd_function_table can be done with less hassle since the pointer can +be initialized in _mesa_init_driver_functions() rather than in _all_ the +drivers. + + +Device Drivers +-------------- + +Mesa advertises itself as supporting OpenGL 1.2, 1.3, 1.4 or 1.5 +depending on the device driver's capabilities. For example, if the +driver enables all the ARB extensions which are part of OpenGL 1.5 +then glGetString(GL_VERSION) will return "1.5". Otherwise, it'll +return "1.4" or the next lower version that implements all required +functionality. + +A number of Mesa's software drivers haven't been actively maintained for +some time. We rely on volunteers to maintain many of the drivers. +Here's the current status of all included drivers: + +Driver Status +---------------------- --------------------- +XMesa (Xlib) implements OpenGL 1.5 +OSMesa (off-screen) implements OpenGL 1.5 +Glide (3dfx Voodoo1/2) implements OpenGL 1.3 +SVGA implements OpenGL 1.3 +Wind River UGL implements OpenGL 1.3 +Windows/Win32 implements OpenGL 1.5 +DJGPP implements OpenGL 1.5 +GGI implements OpenGL 1.3 +BeOS implements OpenGL 1.5 +Allegro needs updating +D3D needs updating + + + +Other Changes +------------- + +See the VERSIONS file for more details about bug fixes, etc. in Mesa 6.1. + + +---------------------------------------------------------------------- |