Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 1 | |
| 2 | Mesa 6.1 release notes |
| 3 | |
Brian Paul | 6aa5b4c | 2004-08-17 22:58:23 +0000 | [diff] [blame] | 4 | August 18, 2004 |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 5 | |
| 6 | PLEASE READ!!!! |
| 7 | |
| 8 | |
| 9 | |
| 10 | Introduction |
| 11 | ------------ |
| 12 | |
| 13 | Mesa uses an even/odd version number scheme like the Linux kernel. |
| 14 | Odd numbered versions (such as 6.1) designate new developmental releases. |
| 15 | Even numbered versions (such as 6.0) designate stable releases. |
| 16 | |
| 17 | |
| 18 | New Features |
| 19 | ------------ |
| 20 | |
Brian Paul | 946765a | 2004-08-14 15:21:17 +0000 | [diff] [blame] | 21 | Half-precision floating point (GLhalf) pixel formats are supported |
| 22 | in Mesa, but the feature isn't exposed yet since the ARB extension |
| 23 | hasn't been finalized yet. |
Brian Paul | 07cc9af | 2004-05-05 00:02:23 +0000 | [diff] [blame] | 24 | |
| 25 | |
| 26 | Texture image handling |
| 27 | ---------------------- |
| 28 | |
| 29 | The code which implements image conversion, pixel transfer ops, etc |
| 30 | for glTexImage commands has been rewritten. |
| 31 | |
| 32 | Now the gl_texture_format struct has a new StoreImage function |
| 33 | pointer. Each texture format must implement this function. The |
| 34 | function is totally responsible for converting the user's texture |
| 35 | image into the specific format. A few helper functions makes this |
| 36 | relatively simple. |
| 37 | |
| 38 | Overall, the code is much simpler, cleaner and easier to work with |
| 39 | now. Adding new texture formats is straight-forward and there's no |
| 40 | longer any distinction between "hardware" and "software" formats. |
| 41 | |
| 42 | Finally, the code for compressed texture images has been reorganized |
| 43 | as well. |
| 44 | |
| 45 | Removed files: |
| 46 | texutil.c |
| 47 | texutil.h |
| 48 | texutil_tmp.h |
| 49 | |
| 50 | New files: |
| 51 | texcompress_s3tc.c |
| 52 | texcompress_fxt1.c |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 53 | |
| 54 | |
| 55 | |
| 56 | Driver / context changes |
| 57 | ------------------------ |
| 58 | |
| 59 | The _mesa_create_context() and _mesa_initialize_context() function |
| 60 | parameters have changed. They now take a pointer to a struct |
| 61 | dd_function_table. Drivers can initialize this table by calling |
| 62 | _mesa_init_driver_functions(). Drivers should then plug in the special |
| 63 | functions they implement. In particular, the ctx->Driver.NewTextureObject |
| 64 | pointer _must_ be set so that the default texture objects created in |
| 65 | _mesa_create/initialize_context() are correctly built. |
| 66 | |
| 67 | The _mesa_init_driver_functions() function allows a lot of redundant code |
| 68 | to be removed from the device drivers (such as initializing |
| 69 | ctx->Driver.Accum to point to _swrast_Accum). Adding new functions to |
| 70 | the dd_function_table can be done with less hassle since the pointer can |
| 71 | be initialized in _mesa_init_driver_functions() rather than in _all_ the |
| 72 | drivers. |
| 73 | |
| 74 | |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 75 | Device Drivers |
| 76 | -------------- |
| 77 | |
Brian Paul | edd1d86 | 2004-01-23 01:56:26 +0000 | [diff] [blame] | 78 | Mesa advertises itself as supporting OpenGL 1.2, 1.3, 1.4 or 1.5 |
| 79 | depending on the device driver's capabilities. For example, if the |
| 80 | driver enables all the ARB extensions which are part of OpenGL 1.5 |
| 81 | then glGetString(GL_VERSION) will return "1.5". Otherwise, it'll |
| 82 | return "1.4" or the next lower version that implements all required |
| 83 | functionality. |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 84 | |
| 85 | A number of Mesa's software drivers haven't been actively maintained for |
| 86 | some time. We rely on volunteers to maintain many of the drivers. |
| 87 | Here's the current status of all included drivers: |
| 88 | |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 89 | Driver Status |
| 90 | ---------------------- --------------------- |
| 91 | XMesa (Xlib) implements OpenGL 1.5 |
| 92 | OSMesa (off-screen) implements OpenGL 1.5 |
Brian Paul | 6aa5b4c | 2004-08-17 22:58:23 +0000 | [diff] [blame] | 93 | Glide (3dfx Voodoo1/2) implements OpenGL 1.3 |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 94 | SVGA implements OpenGL 1.3 |
| 95 | Wind River UGL implements OpenGL 1.3 |
| 96 | Windows/Win32 implements OpenGL 1.5 |
| 97 | DJGPP implements OpenGL 1.5 |
| 98 | GGI implements OpenGL 1.3 |
| 99 | BeOS implements OpenGL 1.5 |
| 100 | Allegro needs updating |
| 101 | D3D needs updating |
| 102 | |
| 103 | |
| 104 | |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 105 | Other Changes |
| 106 | ------------- |
| 107 | |
Brian Paul | edd1d86 | 2004-01-23 01:56:26 +0000 | [diff] [blame] | 108 | See the VERSIONS file for more details about bug fixes, etc. in Mesa 6.1. |
Brian Paul | d805900 | 2004-01-20 02:54:51 +0000 | [diff] [blame] | 109 | |
| 110 | |
| 111 | ---------------------------------------------------------------------- |