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diff --git a/nx-X11/extras/Mesa/docs/RELNOTES-5.1 b/nx-X11/extras/Mesa/docs/RELNOTES-5.1 new file mode 100644 index 000000000..aed6e102b --- /dev/null +++ b/nx-X11/extras/Mesa/docs/RELNOTES-5.1 @@ -0,0 +1,279 @@ + + Mesa 5.1 release notes + + December 17, 2003 + + PLEASE READ!!!! + + + +Introduction +------------ + +Mesa uses an even/odd version number scheme like the Linux kernel. +Even-numbered versions (such as 5.0) designate stable releases. +Odd-numbered versions (such as 5.1) designate new developmental releases. + + +Bug fixes +--------- +See the VERSIONS file for a list of bugs fixed in this release. + + + +New Features in Mesa 5.1 +------------------------ + +GL_ARB_vertex_program / GL_ARB_fragment_program + Michal Krol and Karl Rasche implemented these extensions. Thanks! + Be aware that there may be some rough edges and lurking bugs. + +GL_ATI_texture_env_combine3 extension + This adds a few new texture combine modes. + Contributed by Ian Romanick. + +GL_SGI_texture_color_table + Adds a color table lookup to the RGBA texture path. There's a separate + color table for each texture unit. + Contributed by Eric Plante. + +GL_NV_fragment_program + NVIDIA's fragment-level programming feature. + Possible lurking bugs: + - the DDX and DDY commands aren't fully tested + - there may be bugs in the parser + - the TEX and TXP instructions both do perspective correction + - the pack/unpack instructions may not be correct + +GL_EXT_depth_bounds_test + This extension adds a scissor-like test for the Z axis. It's used to + optimize stencil-volume shadow algorithms. + +GL_NV_light_max_exponent + Lifts the 128 limit for max light exponent. + +GL_EXT_texture_rectangle + Identical to GL_NV_texture_rectangle + +GL_ARB_occlusion_query + Useful for visibility-based culling. + +GL_ARB_texture_non_power_of_two + Removes the restriction that texture dimensions must be powers of two. + +GL_ARB_vertex_buffer_object + Allows server-side vertex arrays, optimized host/card data transfers, etc. + +GL_ARB_point_sprite + ARB-approved version of GL_NV_point_sprite. Basically allows textures + to be applied to points. + +GL_IBM_multimode_draw_arrays + Allows multiple vertex arrays to be drawn with one call, including arrays + of different types of primitives. + +GL_SUN_multi_draw_arrays + An alias for GL_EXT_multi_draw_arrays, standard in OpenGL 1.4. + +Faster glDrawPixels / glCopyPixels in X11 driver + If your X screen is 32bpp, glDrawPixels to the front color buffer will + be accelerated (via XPutImage()) if the image format is GL_BGRA and the + type is GL_UNSIGNED_BYTE. No raster operations, such as depth test, + blend, fog, etc. can be enabled. + + If your X screen is 16bpp, glDrawPixels to the front color buffer will + be accelerated (via XPutImage()) if the image format is GL_RGB and the + type is GL_UNSIGNED_SHORT_5_6_5. No raster operations, such as depth + test, blend, fog, etc. can be enabled. + + glCopyPixels() calls for the front color buffer will be accelerated + (via XCopyArea()) if no raster operations, such as depth test, blend, + fog, pixel zoom, etc. are enabled. + + The speed-up over typical software rendering is a factor of 10 for + glDrawPixels and 100 for glCopyPixels. + + +With the addition of GL_ARB_occlusion_query, GL_ARB_vertex_buffer_object, +GL_ARB_texture_non_power_of_two and GL_EXT_shadow_funcs, Mesa 5.1 supports +all the new features of OpenGL 1.5. Mesa 6.0 (the next stable release) +will advertise GL_VERSION = "1.5". + + + +Vertex/Fragment program debugger +-------------------------------- + +GL_MESA_program_debug is an experimental extension to support +interactive debugging of vertex and fragment programs. See the +docs/MESA_program_debug.spec file for details. + +The bulk of the vertex/fragment program debugger is implemented +outside of Mesa. The GL_MESA_program_debug extension just has minimal +hooks for stopping running programs and inspecting programs. + +The progs/tests/debugger.c (only in CVS) program is an example of how +the extension can be used. Presently, the debugger code and demo code +is in the same file. Eventually the debugger code should be moved +into a reusable module. + +As it is now, the demo lets you set breakpoings in vertex/fragment +programs, single step, and print intermediate register values. It's +basically just a proof of concept. + + + +Directory tree reorganization +----------------------------- + +The directory structure for Mesa has been overhauled to improve its layout. +All source code for Mesa, GLU, GLUT, etc is now under the src/ directory +in appropriate subdirectories. + +The Mesa source code and drivers has been reorganized under src/mesa/. + +All demonstration programs and tests are now in subdirectories under progs/. + + + +Build System Changes +-------------------- + +The GNU automake/autoconf support has been removed. As it was, it seldom +worked on anything but Linux. The Mesa developers aren't big fans of +automake/autoconf/libtool and didn't have the time to maintain it. +If someone wants to contribute new automake/autoconf support (and is +willing to maintain it), it may be re-incorporated into Mesa, subject +to some requirements. + +The "old style" makefile system has been updated: + 1. Make-config has been trimmed down to fewer, modern configurations. + 2. Most of the bin/mklib.* scripts have been rolled into a new "mklib" + script that works on all sorts of systems. There are probably some + bugs in it, but it's been tested on Linux, SunOS 5.8 and IRIX 6.5. + Improvements/contributes are greatly appreciated. + 3. The Makefile.X11 files have been cleaned up in various ways + + + +Source File Changes +------------------- + +The mmath.[ch] files are obsolete. Their contents have been moved +into the imports.[ch] and macros.[ch] files. + +The files related to vertex and fragment programming have changed. +Old files: + vpexec.[ch] + vpparse.[ch] + vpstate.[ch] +New files: + program.[ch] - generic ARB/NV program code + arbprogram.[ch] - ARB program API functions + arbfragparse.[ch] - ARB fragment program parsing + arbvertparse.[ch] - ARB vertex program parsing + arbparse.[ch] - ARB vertex/fragment parsing + arbparse_syn.h - vertex/fragment program syntax + nvprogram.[ch] - NV program API functions + nvvertprog.h - NV vertex program definitions + nvfragprog.h - NV fragment program definitions + nvvertparse.[ch] - NV vertex program parser + nvfragparse.[ch] - NV fragment program parser + nvvertexec.[ch] - NV vertex program execution + swrast/s_nvfragprog.[ch] - NV fragment program execution + +The files related to per-vertex handling have changed. +Old files: + tnl/t_eval_api.c - old per-vertex code + tnl/t_imm_alloc.c - old per-vertex code + tnl/t_imm_api.c - old per-vertex code + tnl/t_imm_debug.c - old per-vertex code + tnl/t_imm_dlist.c - old per-vertex code + tnl/t_imm_elt.c - old per-vertex code + tnl/t_imm_eval.c - old per-vertex code + tnl/t_imm_exec.c - old per-vertex code + tnl/t_imm_fixup.c - old per-vertex code + tnl/t_vtx_sse.c - old per-vertex code + tnl/t_vtx_x86.c - old per-vertex code +New files: + tnl/t_save_api.c - new per-vertex code + tnl/t_save_loopback.c - new per-vertex code + tnl/t_save_playback.c - new per-vertex code + tnl/t_vtx_eval.c - old per-vertex code + +Other new files: + bufferobj.[ch] - GL_ARB_vertex_buffer_object functions + version.h - defines the Mesa version info + +Other removed files: + swrast/s_histogram.[ch] - moved into src/histogram.c + + + +Other Changes +------------- + +The ctx->Driver.CreateTexture function has been removed - it wasn't used. + +New device driver hook functions: + NewTextureObject - used to allocate struct gl_texture_objects + NewTextureImage - used to allocate struct gl_texture_images + +New ctx->Texture._EnabledCoordUnits field: + With the addition of GL_NV_fragment_program we may need to interpolate + various sets of texture coordinates even when the corresponding texture + unit is not enabled. That is, glEnable(GL_TEXTURE_xD) may never get + called but we still may have to interpolate texture coordinates across + triangles so that the fragment program will get them. + This new field indicates which sets of texture coordinates are needed. + If a bit is set in the ctx->Texture._EnabledUnits bitmask is set, the + same bit MUST be set in ctx->Texture._EnabledCoordUnits. + +The ctx->_TriangleCaps field is deprecated. + Instead of testing the DD_* bits in _TriangleCaps, you should instead + directly test the relevant state variables, or use one of the helper + functions like NEED_SECONDARY_COLOR() at the bottom of context.h + While testing _TriangleCaps bits was fast, it was kludgey, and setting + the bits in the first place could be error prone. + +New vertex processing code. + The code behind glBegin, glEnd, glVertex, glNormal, etc. has been + totally rewritten. It's a cleaner implementation now and should use + less memory. (Keith) + + + +To Do +----- +Add screen-awareness to fakeglx.c + + + + +Device Driver Status +-------------------- + +A number of Mesa's software drivers haven't been actively maintained for +some time. We rely on volunteers to maintain many of these drivers. +Here's the current status of all included drivers: + + +Driver Status +---------------------- --------------------- +XMesa (Xlib) implements OpenGL 1.4 +OSMesa (off-screen) implements OpenGL 1.4 +FX (3dfx Voodoo1/2) implements OpenGL 1.3 +SVGA implements OpenGL 1.3 +Wind River UGL implements OpenGL 1.3 +Windows/Win32 implements OpenGL 1.4 +DJGPP implements OpenGL 1.4 +GGI implements OpenGL 1.3 +BeOS implements OpenGL 1.4 +Allegro needs updating +D3D needs updating + +Note: supporting OpenGL 1.4 (vs. 1.3 or 1.2) usually only requires that the +driver call the _mesa_enable_1_4_extensions() function. + + +---------------------------------------------------------------------- |