Brian Paul | 9cef3ef | 2004-10-02 15:43:14 +0000 | [diff] [blame] | 1 | |
| 2 | Mesa 6.3 release notes |
| 3 | |
Brian Paul | 7cf480e | 2005-07-21 15:57:29 +0000 | [diff] [blame] | 4 | July 20, 2005 |
Brian Paul | 9cef3ef | 2004-10-02 15:43:14 +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 6.3) designate new developmental releases. |
| 15 | Even numbered versions (such as 6.2) designate stable releases. |
| 16 | |
| 17 | |
| 18 | |
Brian Paul | 612d5f6 | 2004-10-13 15:57:55 +0000 | [diff] [blame] | 19 | New Features |
| 20 | ------------ |
Brian Paul | 9cef3ef | 2004-10-02 15:43:14 +0000 | [diff] [blame] | 21 | |
Brian Paul | 612d5f6 | 2004-10-13 15:57:55 +0000 | [diff] [blame] | 22 | GL_ARB_draw_buffers - allows a fragment program to write to a number of |
| 23 | separate color buffers, instead of just one. |
| 24 | |
Brian Paul | 901d9b9 | 2004-10-16 15:04:43 +0000 | [diff] [blame] | 25 | GL_OES_read_format - allows one to query the fastest glReadPixels format |
| 26 | and datatype. |
Brian Paul | 612d5f6 | 2004-10-13 15:57:55 +0000 | [diff] [blame] | 27 | |
Brian Paul | dd1a817 | 2005-01-03 15:55:51 +0000 | [diff] [blame] | 28 | GL_ARB_pixel_buffer_object - buffer objects for pixel read/write functions. |
| 29 | |
Brian Paul | e4b2356 | 2005-05-04 20:11:35 +0000 | [diff] [blame] | 30 | GL_EXT_framebuffer_object - allows render-to-texture and provides a |
Brian Paul | d459658 | 2005-07-20 18:07:11 +0000 | [diff] [blame] | 31 | window-system indepedent Pbuffer facility. |
Brian Paul | 6bb49ea | 2005-07-19 21:01:46 +0000 | [diff] [blame] | 32 | The Mesa CVS tree contains a couple tests of this extension. |
Brian Paul | e4b2356 | 2005-05-04 20:11:35 +0000 | [diff] [blame] | 33 | |
Brian Paul | dd1a817 | 2005-01-03 15:55:51 +0000 | [diff] [blame] | 34 | DirectFB driver, contributed by Claudio Ciccani. See docs/README.directfb |
| 35 | for details. |
| 36 | |
| 37 | |
| 38 | |
| 39 | Vertex/Fragment Program PRINT Instruction |
| 40 | ----------------------------------------- |
| 41 | |
| 42 | The GL_NV_vertex_program and GL_NV_fragment_program languages have been |
| 43 | extended with a PRINT instruction. |
| 44 | |
Brian Paul | 612d5f6 | 2004-10-13 15:57:55 +0000 | [diff] [blame] | 45 | |
| 46 | |
Brian Paul | cb3bc2c | 2005-01-20 04:03:37 +0000 | [diff] [blame] | 47 | glDeleteTextures(), glDeletePrograms() and glDeleteBuffers() Changed |
| 48 | -------------------------------------------------------------------- |
| 49 | |
| 50 | To match the behaviour of other OpenGL implementations, glDeleteTextures, |
| 51 | glDeletePrograms and glDeleteBuffers have been modified so that: |
| 52 | |
| 53 | * The named texture/program/buffer ID is immediately freed for re-use. |
| 54 | |
| 55 | * The actual texture object, program or buffers isn't really deleted until |
| 56 | it is no longer bound in any rendering context (the reference count |
| 57 | is zero). |
| 58 | |
| 59 | Previously, the texture/program/buffer ID wasn't freed until the object |
| 60 | was really deleted. |
| 61 | |
| 62 | Note that textures, programs and buffers can be shared by several rendering |
| 63 | contexts so they can't be deleted until they're unbound in _all_ contexts. |
| 64 | |
| 65 | |
Brian Paul | d459658 | 2005-07-20 18:07:11 +0000 | [diff] [blame] | 66 | |
Brian Paul | 30aea49 | 2005-07-01 01:04:31 +0000 | [diff] [blame] | 67 | GL_EXT_framebuffer_object changes |
| 68 | --------------------------------- |
| 69 | |
Brian Paul | d459658 | 2005-07-20 18:07:11 +0000 | [diff] [blame] | 70 | Implementing this extension involved changing a lot of code (for the better). |
Brian Paul | cb3bc2c | 2005-01-20 04:03:37 +0000 | [diff] [blame] | 71 | |
Brian Paul | d459658 | 2005-07-20 18:07:11 +0000 | [diff] [blame] | 72 | The gl_framebuffer object now a collection of gl_renderbuffer objects. |
| 73 | Renderbuffers may store colors, stencil indices, or depth values. The |
| 74 | gl_framebuffer and gl_renderbuffer types are object-oriented in design. |
| 75 | |
| 76 | All the old RGB, color index, stencil and depth-related span functions for |
| 77 | reading/writing pixels from/to buffers has changed. Now, all pixels are |
| 78 | read/written through a set of common renderbuffer functions (methods). |
| 79 | |
| 80 | Most device drivers have been updated for these changes, but some haven't. |
Brian Paul | cb3bc2c | 2005-01-20 04:03:37 +0000 | [diff] [blame] | 81 | |
| 82 | |
Brian Paul | 30aea49 | 2005-07-01 01:04:31 +0000 | [diff] [blame] | 83 | |
| 84 | To Do (someday) items |
| 85 | --------------------- |
Brian Paul | 6bca16b | 2004-11-27 19:42:16 +0000 | [diff] [blame] | 86 | Switch to freeglut |
| 87 | Increase MAX_DRAWBUFFERS |
Brian Paul | a815859 | 2004-12-09 23:21:36 +0000 | [diff] [blame] | 88 | driver hooks for BeginQuery/EndQuery |
Brian Paul | 6bca16b | 2004-11-27 19:42:16 +0000 | [diff] [blame] | 89 | |
Brian Paul | 9cef3ef | 2004-10-02 15:43:14 +0000 | [diff] [blame] | 90 | |
| 91 | |
Brian Paul | cb3bc2c | 2005-01-20 04:03:37 +0000 | [diff] [blame] | 92 | Miscellaneous |
| 93 | ------------- |
| 94 | |
Brian Paul | 30aea49 | 2005-07-01 01:04:31 +0000 | [diff] [blame] | 95 | The main/get.c file is now generated with a Python script (get_gen.py). |
Brian Paul | cb3bc2c | 2005-01-20 04:03:37 +0000 | [diff] [blame] | 96 | |
| 97 | |
Brian Paul | 9cef3ef | 2004-10-02 15:43:14 +0000 | [diff] [blame] | 98 | |
| 99 | Driver Status |
| 100 | ---------------------- --------------------- |
| 101 | XMesa (Xlib) implements OpenGL 1.5 |
| 102 | OSMesa (off-screen) implements OpenGL 1.5 |
| 103 | Glide (3dfx Voodoo1/2) implements OpenGL 1.3 |
| 104 | SVGA implements OpenGL 1.3 |
| 105 | Wind River UGL implements OpenGL 1.3 |
| 106 | Windows/Win32 implements OpenGL 1.5 |
| 107 | DJGPP implements OpenGL 1.5 |
| 108 | GGI implements OpenGL 1.3 |
| 109 | BeOS implements OpenGL 1.5 |
| 110 | Allegro needs updating |
| 111 | D3D needs updating |
| 112 | |
| 113 | |
| 114 | ---------------------------------------------------------------------- |