/* -*- mode: C; tab-width:8; -*- */
/*
* Mesa 3-D graphics library
* Version: 3.3
*
* Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
* Original Mesa / 3Dfx device driver (C) 1999 David Bucciarelli, by the
* terms stated above.
*
* Thank you for your contribution, David!
*
* Please make note of the above copyright/license statement. If you
* contributed code or bug fixes to this code under the previous (GNU
* Library) license and object to the new license, your code will be
* removed at your request. Please see the Mesa docs/COPYRIGHT file
* for more information.
*
* Additional Mesa/3Dfx driver developers:
* Daryll Strauss <daryll@precisioninsight.com>
* Keith Whitwell <keith@precisioninsight.com>
*
* See fxapi.h for more revision/author details.
*/
/* fxapi.c - 3Dfx VooDoo/Mesa interface */
/********************************************************************
*
* Function names:
* fxMesa.... (The driver API)
* fxDD.... (Mesa device driver functions)
* fxTM.... (Texture manager functions)
* fxSetup.... (Voodoo units setup functions)
* fx.... (Internal driver functions)
*
* Data type names:
* fxMesa.... (Public driver data types)
* tfx.... (Private driver data types)
*
********************************************************************
*
* V0.30 - David Bucciarelli (davibu@tin.it) Humanware s.r.l.
* - introduced a new MESA_GLX_FX related behavior
* - the Glide fog table was built in a wrong way (using
* gu* Glide function). Added the code for building the
* table following the OpenGL specs. Thanks to Steve Baker
* for highlighting the problem.
* - fixed few problems in my and Keith's fxDDClear code
* - merged my code with the Keith's one
* - used the new BlendFunc Mesa device driver function
* - used the new AlphaFunc Mesa device driver function
* - used the new Enable Mesa device driver function
* - fixed a bug related to fog in the Mesa core. Fog
* were applied two times: at vertex level and at fragment
* level (thanks to Steve Baker for reporting the problem)
* - glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE) now works
* (thanks to Jiri Pop for reporting the problem)
* - the driver works fine with OpenGL Unreal
* - fixed a bug in the Mesa core clipping code (related
* to the q texture coordinate)
* - introduced the support for the q texture coordinate
*
* Keith Whitwell (keithw@cableinet.co.uk)
* - optimized the driver and written all the new code
* required by the new Mesa-3.1 device driver API
* and by the new Mesa-3.1 core changes
* - written the cva support and many other stuff
*
* Brian Paul (brian_paul@avid.com) Avid Technology
* - fixed display list share bug for MESA_GLX_FX = window/fullscreen
* - fixed glClear/gl...Mask related problem
*
* Bert Schoenwaelder (bert@prinz-atm.CS.Uni-Magdeburg.De)
* - the driver is now able to sleep when waiting for the completation
* of multiple swapbuffer operations instead of wasting
* CPU time (NOTE: you must uncomment the lines in the
* fxMesaSwapBuffers function in order to enable this option)
*
* Eero Pajarre (epajarre@koti.tpo.fi)
* - enabled the macro FLOAT_COLOR_TO_UBYTE_COLOR under
* windows
* - written an asm x86 optimized float->integer conversions
* for windows
*
* Theodore Jump (tjump@cais.com)
* - fixed a small problem in the __wglMonitor function of the
* wgl emulator
* - written the in-window-rendering hack support for windows
* and Vooodoo1/2 cards
*
* V0.29 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - included in Mesa-3.0
* - now glGetString(GL_RENDERER) returns more information
* about the hardware configuration: "Mesa Glide <version>
* <Voodoo_Graphics|Voodoo_Rush|UNKNOWN> <num> CARD/<num> FB/
* <num> TM/<num> TMU/<NOSLI|SLI>"
* where: <num> CARD is the card used for the current context,
* <num> FB is the number of MB for the framebuffer,
* <num> TM is the number of MB for the texture memory,
* <num> TMU is the number of TMU. You can try to run
* Mesa/demos/glinfo in order to have an example of the
* output
* - fixed a problem of the WGL emulator with the
* OpenGL Optimizer 1.1 (thanks to Erwin Coumans for
* the bug report)
* - fixed some bug in the fxwgl.c code (thanks to
* Peter Pettersson for a patch and a bug report)
*
* Theodore Jump (tjump@cais.com)
* - written the SST_DUALHEAD support in the WGL emulator
*
* Daryll Strauss (daryll@harlot.rb.ca.us)
* - fixed the Voodoo Rush support for the in window rendering
*
* V0.28 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - the only supported multitexture functions are GL_MODULATE
* for texture set 0 and GL_MODULATE for texture set 1. In
* all other cases, the driver falls back to pure software
* rendering
* - written the support for the new GL_EXT_multitexture
* - written the DD_MAX_TEXTURE_COORD_SETS support in the
* fxDDGetParameteri() function
* - the driver falls back to pure software rendering when
* texture mapping function is GL_BLEND
*
* V0.27 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - inluded in the Mesa-3.0beta5
* - written a smal extension (GL_FXMESA_global_texture_lod_bias) in
* order to expose the LOD bias related Glide function
* - fixed a bug fxDDWriteMonoRGBAPixels()
* - the driver is now able to fallback to software rendering in
* any case not directly supported by the hardware
* - written the support for enabling/disabling dithering
* - the in-window-rendering hack now works with any X11 screen
* depth
* - fixed a problem related to color/depth/alpha buffer clears
* - fixed a problem when clearing buffer for a context with the
* alpha buffer
* - fixed a problem in the fxTMReloadSubMipMapLevel() function,
* I have forget a "break;" (thanks to Joe Waters for the bug report)
* - fixed a problem in the color format for the in window
* rendering hack
* - written the fxDDReadRGBAPixels function
* - written the fxDDDepthTestPixelsGeneric function
* - written the fxDDDepthTestSpanGeneric function
* - written the fxDDWriteMonoRGBAPixels function
* - written the fxDDWriteRGBAPixels function
* - removed the multitexture emulation code for Voodoo board
* with only one TMU
*
* Chris Prince <cprince@cs.washington.edu>
* - fixed a new bug in the wglUseFontBitmaps code
*
* Ralf Knoesel (rknoesel@Stormfront.com)
* - fixed a bug in the wglUseFontBitmaps code
*
* Rune Hasvold (runeh@ifi.uio.no)
* - fixed a problem related to the aux usage in the fxBestResolution
* function
* - fixed the order of pixel formats in the WGL emulator
*
* Fredrik Hubinette (hubbe@hubbe.net)
* - the driver shutdown the Glide for most common signals
*
* V0.26 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - included in the Mesa-3.0beta4
* - fixed a problem related to a my optimization for the Rune's
* pixel-span optimization
* - fixed a problem related to fxDDSetNearFar() and ctx->ProjectionMatrixType
* (thanks to Ben "Ctrl-Alt-Delete" and the Raul Alonso's ssystem)
* - fixed a small bug in the Rune's pixel-span optimization
* - fixed a problem with GL_CCW (thanks to Curt Olson for and example
* of the problem)
* - grVertex setup code is now ready for the internal thread support
* - fixed a no used optimization with clipped vertices in
* grVertex setup code
* - fixed a problem in the GL_LIGHT_MODEL_TWO_SIDE support (thanks
* to Patrick H. Madden for a complete example of the bug)
*
* Rune Hasvold (runeh@ifi.uio.no)
* - highly optimized the driver functions for writing pixel
* span (2-3 times faster !)
*
* Axel W. Volley (volley@acm.org) Krauss-Maffei Wehrtechnik
* - written the fxDDReadDepthSpanFloat() and fxDDReadDepthSpanInt()
* functions
*
* V0.25 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - fixed a problem with Voodoo boards with only one TMU
* - fixed a bug in the fxMesaCreateContext()
* - now the GL_FRONT_AND_BACK works fine also with
* the alpha buffer and/or antialiasing
* - written the support for GL_FRONT_AND_BACK drawing but
* it doesn't works with the alpha buffer and/or antialiasing
* - fixed some bug in the Mesa core for glCopyTexSubImage
* and glCopyTexImage functions (thanks to Mike Connell
* for an example of the problem)
* - make some small optimizations in the Mesa core in order
* to save same driver call and state change for not very
* well written applications
* - introduced the NEW_DRVSTATE and make other optimizations
* for minimizing state changes
* - made a lot of optimizations in order to minimize state
* changes
* - it isn't more possible to create a context with the
* depth buffer and the stancil buffer (it isn't yet supported)
* - now the partial support for the Multitexture extension
* works with Quake2 for windows
* - vertex snap is not longer used for the Voodoo2 (FX_V2
* must be defined)
* - done a lot of cleanup in the fxsetup.c file
* - now the partial support for the Multitexture extension
* works with GLQuake for windows
*
* Dieter Nuetzel (nuetzel@kogs.informatik.uni-hamburg.de) University of Hamburg
* - fixed a problem in the asm code for Linux of the fxvsetup.c file
* highlighted by the binutils-2.8.1.0.29. 'fildw' asm instruction
* changed in 'fild'
*
* Kevin Hester (kevinh@glassworks.net)
* - written the wglUseFontBitmaps() function in the WGL emulator
*
* V0.24 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - now the drive always uses per fragment fog
* - written a small optimization in the points drawing function
* - written the support for trilinear filtering with 2 TMUs
* - written the first partial support for the Multitexture extension.
* This task is quite hard because the color combine units work after
* the two texture combine units and not before as required by the
* Multitexture extension
* - written a workaround in fxBestResolution() in order to solve a
* problem with bzflag (it asks for 1x1 window !)
* - changed the fxBestResolution() behavior. It now returns the larger
* screen resolution supported by the hardware (instead of 640x480)
* when it is unable to find an appropriate resolution that is large
* enough for the requested size
* - the driver is now able to use also the texture memory attached to
* second TMU
* - the texture memory manager is now able to work with two TMUs and
* store texture maps in the memory attached to TMU0, TMU1 or to split
* the mimpmap levels across TMUs in order to support trilinear filtering
* - I have bought a Voodoo2 board !
* - the amount of frambuffer ram is now doubled when an SLI configuration
* is detected
* - solved a problem related to the fxDDTexParam() and fxTexInvalidate()
* functions (thanks to Rune Hasvold for highlighting the problem)
* - done some cleanup in the fxvsetup.c file, written
* the FXVSETUP_FUNC macro
* - done a lot of cleanup in data types and field names
*
* Rune Hasvold (runeh@ifi.uio.no)
* - written the support for a right management of the auxiliary buffer.
* You can now use an 800x600 screen without the depth and alpha
* buffer
* - written the support for a new pixel format (without the depth
* and alpha buffer) in the WGL emulator
* - fixed a bug in the window version of the GLUT (it was ever asking
* for depth buffer)
*
* V0.23 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - included in the Mesa-3.0beta2 release
* - written the support for the OpenGL 1.2 GL_TEXTURE_BASE_LEVEL
* and GL_TEXTURE_MAX_LEVEL
* - rewritten several functions for a more clean support of texture
* mapping and in order to solve some bug
* - the accumulation buffer works (it is bit slow beacuase it requires
* to read/write from/to the Voodoo frame buffer but it works)
* - fixed a bug in the fxDDReadRGBASpan driver function (the R and
* B channels were read in the wrong order). Thanks to Jason Heym
* for highlighting the problem
* - written the support for multiple contexts on multiple boards.
* you can now use the Mesa/Voodoo with multiple Voodoo Graphics
* boards (for example with multiple screens or an HMD)
* - the fxBestResolution() now check all available resolutions
* and it is able to check the amount of framebuffer memory
* before return a resolution
* - modified the GLX/X11 driver in order to support all the
* resolution available
* - changed all function names. They should be now a bit more
* readable
* - written the Glide grVertex setup code for two TMU or
* for Multitexture support with emulationa dn one TMU
* - written the support for the new Mesa driver
* function GetParametri
* - small optimization/clean up in the texbind() function
* - fixed a FPU precision problem for glOrtho and texture
* mapping (thanks to Antti Juhani Huovilainen for an example
* of the problem)
* - written some small SGI OpenGL emulation code for the wgl,
* the OpenGL Optimizer and Cosmo3D work fine under windows !
* - moved the point/line/triangle/quad support in the fxmesa7.c
* - fixed a bug in the clear_color_depth() (thanks to Henk Kok
* for an example of the problem)
* - written a small workaround for Linux GLQuake, it asks
* for the alpha buffer and the depth buffer at the some time
* (but it never uses the alpha buffer)
* - checked the antialiasing points, lines and polygons support.
* It works fine
* - written the support for standard OpenGL antialiasing using
* blending. Lines support works fine (tested with BZflag)
* while I have still to check the polygons and points support
* - written the support for the alpha buffer. The driver is now
* able to use the Voodoo auxiliary buffer as an alpha buffer
* instead of a depth buffer. Also all the OpenGL blending
* modes are now supported. But you can't request a context
* with an alpha buffer AND a depth buffer at the some time
* (this is an hardware limitation)
* - written the support for switching between the fullscreen
* rendering and the in-window-rendering hack on the fly
*
* Rune Hasvold (runeh@ifi.uio.no)
* - fixed a bug in the texparam() function
*
* Brian Paul (brianp@elastic.avid.com) Avid Technology
* - sources accomodated for the new Mesa 3.0beta1
*
* V0.22 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - included with some v0.23 bug fix in the final release
* of the Mesa-2.6
* - written the support for the MESA_WGL_FX env. var. but
* not tested because I have only Voodoo Graphics boards
* - fixed a bug in the backface culling code
* (thanks to David Farrell for an example of the problem)
* - fixed the "Quake2 elevator" bug
* - GL_POLYGONS with 3/4 vertices are now drawn as
* GL_TRIANLGES/GL_QUADS (a small optimization for GLQuake)
* - fixed a bug in fxmesa6.h for GL_LINE_LOOP
* - fixed a NearFarStack bug in the Mesa when applications
* directly call glLoadMatrix to load a projection matrix
* - done some cleanup in the fxmesa2.c file
* - the driver no longer translates the texture maps
* when the Mesa internal format and the Voodoo
* format are the some (usefull for 1 byte texture maps
* where the driver can directly use the Mesa texture
* map). Also the amount of used memory is halfed
* - fixed a bug for GL_DECAL and GL_RGBA
* - fixed a bug in the clear_color_depth()
* - tested the v0.22 with the Mesa-2.6beta2. Impressive
* performances improvement thanks to the new Josh's
* asm code (+10fps in the isosurf demo, +5fps in GLQuake
* TIMEREFRESH)
* - written a optimized version of the RenderVB Mesa driver
* function. The Voodoo driver is now able to upload polygons
* in the most common cases at a very good speed. Good
* performance improvement for large set of small polygons
* - optimized the asm code for setting up the color information
* in the Glide grVertex structure
* - fixed a bug in the fxmesa2.c asm code (the ClipMask[]
* wasn't working)
*
* Josh Vanderhoof (joshv@planet.net)
* - removed the flush() function because it isn't required
* - limited the maximum number of swapbuffers in the Voodoo
* commands FIFO (controlled by the env. var. MESA_FX_SWAP_PENDING)
*
* Holger Kleemiss (holger.kleemiss@metronet.de) STN Atlas Elektronik GmbH
* - applied some patch for the Voodoo Rush
*
* V0.21 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - the driver is now able to take advantage of the ClipMask[],
* ClipOrMask and ClipAndMask information also under Windows
* - introduced a new function in the Mesa driver interface
* ClearColorAndDepth(). Now the glClear() function is
* 2 times faster (!) when you have to clear the color buffer
* and the depth buffer at some time
* - written the first version of the fxRenderVB() driver
* function
* - optimized the glTexImage() path
* - removed the fxMesaTextureUsePalette() support
* - fixed a bug in the points support (thanks to David Farrell
* for an example of the problem)
* - written the optimized path for glSubTexImage(),
* introduced a new function in the Mesa driver interface
* TexSubImage(...)
* - fixed a bug for glColorMask and glDepthMask
* - the wbuffer is not more used. The Voodoo driver uses
* a standard 16bit zbuffer in all cases. It is more consistent
* and now GLQuake and GLQuake2test work also with a GL_ZTRICK 0
* - the driver is now able to take advantage of the ClipMask[],
* ClipOrMask and ClipAndMask information (under Linux);
* - rewritten the setup_fx_units() function, now the texture
* mapping support is compliant to the OpenGL specs (GL_BLEND
* support is still missing). The LinuxGLQuake console correctly
* fade in/out and transparent water of GLQuake2test works fine
* - written the support for the env. var. FX_GLIDE_SWAPINTERVAL
* - found a bug in the Mesa core. There is a roundup problem for
* color values out of the [0.0,1.0] range
*
* Wonko <matt@khm.de>
* - fixed a Voodoo Rush related problem in the fxwgl.c
*
* Daryll Strauss <daryll@harlot.rb.ca.us>
* - written the scissor test support
*
* V0.20 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - written the closetmmanger() function in order to free all the memory
* allocated by the Texture Memory Manager (it will be useful
* when the support for multiple contexts/boards will be ready)
* - now the Voodoo driver runs without printing any information,
* define the env. var. MESA_FX_INFO if you want to read some
* information about the hardware and some statistic
* - written a small workaround for the "GLQuake multiplayer white box bug"
* in the setup_fx_units() funxtions. I'm already rewriting
* this function because it is the source of nearly all the current
* Voodoo driver problems
* - fixed the GLQuake texture misalignment problem (the texture
* coordinates must be scaled between 0.0 and 256.0 and not
* between 0.0 and 255.0)
* - written the support for the GL_EXT_shared_texture_palette
* - some small change for supporting the automatic building of the
* OpenGL32.dll under the Windows platform
* - the redefinition of a mipmap level is now a LOT faster. This path
* is used by GLQuake for dynamic lighting with some call to glTexSubImage2D()
* - the texture memory is now managed a set of 2MB blocks so
* texture maps can't be allocated on a 2MB boundary. The new Pure3D
* needs this kind of support (and probably any other Voodoo Graphics
* board with more than 2MB of texture memory)
*
* Brian Paul (brianp@elastic.avid.com) Avid Technology
* - added write_monocolor_span(), fixed bug in write_color_span()
* - added test for stenciling in choosepoint/line/triangle functions
*
* Joe Waters (falc@attila.aegistech.com) Aegis
* - written the support for the env. var. SST_SCREENREFRESH
*
* V0.19 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - written the 3Dfx Global Palette extension for GLQuake
* - written the support for the GL_EXT_paletted_texture (it works only with GL_RGBA
* palettes and the alpha value is ignored ... this is a limitation of the
* the current Glide version and Voodoo hardware)
* - fixed the amount of memory allocated for 8bit textures
* - merged the under construction v0.19 driver with the Mesa 2.5
* - finally written the support for deleting textures
* - introduced a new powerful texture memory manager: the texture memory
* is used as a cache of the set of all defined texture maps. You can
* now define several MB of texture maps also with a 2MB of texture memory
* (the texture memory manager will do automatically all the swap out/swap in
* work). The new texture memory manager has also
* solved a lot of other bugs/no specs compliance/problems
* related to the texture memory usage. The texture
* manager code is inside the new fxmesa3.c file
* - broken the fxmesa.c file in two files (fxmesa1.c and fxmesa2.c)
* and done some code cleanup
* - now is possible to redefine texture mipmap levels already defined
* - fixed a problem with the amount of texture memory allocated for textures
* with not all mipmap levels defined
* - fixed a small problem with single buffer rendering
*
* Brian Paul (brianp@elastic.avid.com) Avid Technology
* - read/write_color_span() now use front/back buffer correctly
* - create GLvisual with 5,6,5 bits per pixel, not 8,8,8
* - removed a few ^M characters from fxmesa2.c file
*
* V0.18 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - the Mesa-2.4beta3 is finally using the driver quads support (the
* previous Mesa versions have never taken any advantage from the quads support !)
* - tested with the Glide 2.4 for Win
* - ported all asm code to Linux
* - ported the v0.18 to Linux (without asm code)
* - back to Linux !!!
* - optimized the SETUP macro (no more vertex snap for points and lines)
* - optimized the SETUP macro (added one argument)
* - the Mesa/Voodoo is now 20/30% for points, lines and small triangles !
* - performance improvement setting VBSIZE to 72
* - the GrVertex texture code is now written in asm
* - the GrVertex zbuffer code is now written in asm
* - the GrVertex wbuffer code is now written in asm
* - the GrVertex gouraud code is now written in asm
* - the GrVertex snap code is now written in asm
* - changed the 8bit compressed texture maps in 8bit palette texture maps
* support (it has the some advantage of compressed texture maps without the
* problem of a fixed NCC table for all mipmap levels)
* - written the support for 8bit compressed texture maps (but texture maps with
* more than one mipmap level aren't working fine)
* - finnaly everthing is working fine in MesaQuake !
* - fixed a bug in the computation of texture mapping coordinates (I have found
* the bug thanks to MesaQuake !)
* - written the GL_REPLACE support (mainly for MesaQuake)
* - written the support for textures with not all mipmap levels defined
* - rewritten all the Texture memory stuff
* - written the MesaQuake support (define MESAQUAKE)
* - working with a ZBuffer if glOrtho or not int the default glDepthRange,
* otherwise working with the WBuffer
* written the glDepthRange support
*
* Diego Picciani (d.picciani@novacomp.it) Nova Computer s.r.l.
* - written the fxCloseHardware() and the fxQuaryHardware() (mainly
* for the VoodooWGL emulator)
*
* Brian Paul (brianp@elastic.avid.com) Avid Technology
* - implemented read/write_color_span() so glRead/DrawPixels() works
* - now needs Glide 2.3 or later. Removed GLIDE_FULL_SCREEN and call to grSstOpen()
*
* V0.17 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - optimized the bitmap support (66% faster)
* - tested with the Mesa 2.3beta2
*
* Diego Picciani (d.picciani@novacomp.it) Nova Computer s.r.l.
* - solved a problem with the drawbitmap() and the Voodoo Rush
* (GR_ORIGIN_LOWER_LEFT did not work with the Stingray)
*
* Brian Paul (brianp@elastic.avid.com) Avid Technology
* - linux stuff
* - general code clean-up
* - added attribList parameter to fxMesaCreateContext()
* - single buffering works now
* - VB colors are now GLubytes, removed ColorShift stuff
*
* Paul Metzger
* - linux stuff
*
* V0.16 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - written the quadfunc support (no performance improvement)
* - written the support for the new Mesa 2.3beta1 driver interface (Wow ! It is faaaster)
* - rewritten the glBitmap support for the Glide 2.3 (~35% slower !)
* - written the glBitmap support for the most common case (fonts)
*
* Jack Palevich
* - Glide 2.3 porting
*
* Diego Picciani (d.picciani@novacomp.it) Nova Computer s.r.l.
* - extended the fxMesaCreateContext() and fxMesaCreateBestContext()
* functions in order to support also the Voodoo Rush
* - tested with the Hercules Stingray 128/3D (The rendering in a window works !)
*
* V0.15 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - written the GL_LUMINANCE_ALPHA support
* - written the GL_ALPHA support
* - written the GL_LUMINANCE support
* - now SETUP correctly set color for mono color sequences
* - written the 9x1,10x1,...,1x9,1x10,... texture map ratio support
* - written the no square texture map support
* - the fog table is no more rebuilt inside setup_fx_units() each time
*
* Henri Fousse (arnaud@pobox.oleane.com) Thomson Training & Simulation
* - written (not yet finished: no texture mapping) support for glOrtho
* - some change to setup functions
* - the fog support is now fully compatible with the standard OpenGL
* - rewritten several parts of the driver in order to take
* advantage of meshes (40% faster !!!)
*
* V0.14 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - now glAlphaFunc() works
* - now glDepthMask() works
* - solved a mipmap problem when using more than one texture
* - moved ti, texid and wscale inside the fxMesaContext (now we can
* easy support more ctx and more boards)
* - the management of the fxMesaContext was completly broken !
* - solved several problems about Alpha and texture Alpha
* - 4 (RGBA) texture channels supported
* - setting the default color to white
*
* Henri Fousse (arnaud@pobox.oleane.com) Thomson Training & Simulation
* - small change to fxMesaCreateContext() and fxMesaMakeCurrent()
* - written the fog support
* - setting the default clear color to black
* - written cleangraphics() for the onexit() function
* - written fxMesaCreateBestContext()
*
* V0.13 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - now glBlendFunc() works for all glBlendFunc without DST_ALPHA
* (because the alpha buffer is not yet implemented)
* - now fxMesaCreateContext() accept resolution and refresh rate
* - fixed a bug for texture mapping: the w (alias z) must be set
* also without depth buffer
* - fixed a bug for texture image with width!=256
* - written texparam()
* - written all point, line and triangle functions for all possible supported
* contexts and the driver is slight faster with points, lines and small triangles
* - fixed a small bug in fx/fxmesa.h (glOrtho)
*
* V0.12 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - glDepthFunc supported
* - introduced a trick to discover the far plane distance
* (see fxMesaSetFar and fx/fxmesa.h)
* - now the wbuffer works with homogeneous coordinate (and it
* doesn't work with a glOrtho projection :)
* - solved several problems with homogeneous coordinate and texture mapping
* - fixed a bug in all line functions
* - fixed a clear framebuffer bug
* - solved a display list/teximg problem (but use
* glBindTexture: it is several times faster)
*
* V0.11 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - introduced texture mapping support (not yet finished !)
* - tested with Mesa2.2b6
* - the driver is faster
* - written glFlush/glFinish
* - the driver print a lot of info about the Glide lib
*
* v0.1 - David Bucciarelli (tech.hmw@plus.it) Humanware s.r.l.
* - Initial revision
*
*/
#ifdef HAVE_CONFIG_H
#include "conf.h"
#endif
#if defined(FX)
#include "fxdrv.h"
fxMesaContext fxMesaCurrentCtx=NULL;
/*
* Status of 3Dfx hardware initialization
*/
static int glbGlideInitialized=0;
static int glb3DfxPresent=0;
static int glbTotNumCtx=0;
GrHwConfiguration glbHWConfig;
int glbCurrentBoard=0;
#if defined(__WIN32__)
static int cleangraphics(void)
{
glbTotNumCtx=1;
fxMesaDestroyContext(fxMesaCurrentCtx);
return 0;
}
#elif defined(__linux__)
static void cleangraphics(void)
{
glbTotNumCtx=1;
fxMesaDestroyContext(fxMesaCurrentCtx);
}
static void cleangraphics_handler(int s)
{
fprintf(stderr,"fxmesa: Received a not handled signal %d\n",s);
cleangraphics();
/* abort(); */
exit(1);
}
#endif
/*
* Select the Voodoo board to use when creating
* a new context.
*/
GLboolean GLAPIENTRY fxMesaSelectCurrentBoard(int n)
{
fxQueryHardware();
if((n<0) || (n>=glbHWConfig.num_sst))
return GL_FALSE;
glbCurrentBoard=n;
return GL_TRUE;
}
fxMesaContext GLAPIENTRY fxMesaGetCurrentContext(void)
{
return fxMesaCurrentCtx;
}
void GLAPIENTRY fxMesaSetNearFar(GLfloat n, GLfloat f)
{
if(fxMesaCurrentCtx)
fxDDSetNearFar(fxMesaCurrentCtx->glCtx,n,f);
}
/*
* The 3Dfx Global Palette extension for GLQuake.
* More a trick than a real extesion, use the shared global
* palette extension.
*/
extern void GLAPIENTRY gl3DfxSetPaletteEXT(GLuint *pal); /* silence warning */
void GLAPIENTRY gl3DfxSetPaletteEXT(GLuint *pal)
{
fxMesaContext fxMesa =fxMesaCurrentCtx;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
int i;
fprintf(stderr,"fxmesa: gl3DfxSetPaletteEXT()\n");
for(i=0;i<256;i++)
fprintf(stderr,"%x\n",pal[i]);
}
if(fxMesa) {
fxMesa->haveGlobalPaletteTexture=1;
FX_grTexDownloadTable(GR_TMU0,GR_TEXTABLE_PALETTE,(GuTexPalette *)pal);
if (fxMesa->haveTwoTMUs)
FX_grTexDownloadTable(GR_TMU1,GR_TEXTABLE_PALETTE,(GuTexPalette *)pal);
}
}
static GrScreenResolution_t fxBestResolution(int width, int height, int aux)
{
static int resolutions[][5]={
{ 512, 384, GR_RESOLUTION_512x384, 2, 2 },
{ 640, 400, GR_RESOLUTION_640x400, 2, 2 },
{ 640, 480, GR_RESOLUTION_640x480, 2, 2 },
{ 800, 600, GR_RESOLUTION_800x600, 4, 2 },
{ 960, 720, GR_RESOLUTION_960x720, 6, 4 }
#ifdef GR_RESOLUTION_1024x768
,{ 1024, 768, GR_RESOLUTION_1024x768, 8, 4 }
#endif
#ifdef GR_RESOLUTION_1280x1024
,{ 1024, 768, GR_RESOLUTION_1280x1024, 8, 8 }
#endif
#ifdef GR_RESOLUTION_1600x1200
,{ 1024, 768, GR_RESOLUTION_1600x1200, 16, 8 }
#endif
};
int NUM_RESOLUTIONS = sizeof(resolutions) / (sizeof(int)*5);
int i,fbmem;
GrScreenResolution_t lastvalidres=resolutions[1][2];
fxQueryHardware();
if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_VOODOO) {
fbmem=glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.fbRam;
if(glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.sliDetect)
fbmem*=2;
} else if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_SST96)
fbmem=glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config.fbRam;
else
fbmem=2;
/* A work around for BZFlag */
if((width==1) && (height==1)) {
width=640;
height=480;
}
for(i=0;i<NUM_RESOLUTIONS;i++)
if(resolutions[i][4-aux]<=fbmem) {
if((width<=resolutions[i][0]) && (height<=resolutions[i][1]))
return resolutions[i][2];
lastvalidres=resolutions[i][2];
}
return lastvalidres;
}
fxMesaContext GLAPIENTRY fxMesaCreateBestContext(GLuint win,GLint width, GLint height,
const GLint attribList[])
{
GrScreenRefresh_t refresh;
int i;
int res,aux;
refresh=GR_REFRESH_75Hz;
if(getenv("SST_SCREENREFRESH")) {
if(!strcmp(getenv("SST_SCREENREFRESH"),"60"))
refresh=GR_REFRESH_60Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"70"))
refresh=GR_REFRESH_70Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"72"))
refresh=GR_REFRESH_72Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"75"))
refresh=GR_REFRESH_75Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"80"))
refresh=GR_REFRESH_80Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"85"))
refresh=GR_REFRESH_85Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"90"))
refresh=GR_REFRESH_90Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"100"))
refresh=GR_REFRESH_100Hz;
if(!strcmp(getenv("SST_SCREENREFRESH"),"120"))
refresh=GR_REFRESH_120Hz;
}
aux=0;
for(i=0;attribList[i]!=FXMESA_NONE;i++)
if((attribList[i]==FXMESA_ALPHA_SIZE) ||
(attribList[i]==FXMESA_DEPTH_SIZE)) {
if(attribList[++i]>0) {
aux=1;
break;
}
}
res=fxBestResolution(width,height,aux);
return fxMesaCreateContext(win,res,refresh,attribList);
}
#if 0
void fxsignals()
{
signal(SIGINT,SIG_IGN);
signal(SIGHUP,SIG_IGN);
signal(SIGPIPE,SIG_IGN);
signal(SIGFPE,SIG_IGN);
signal(SIGBUS,SIG_IGN);
signal(SIGILL,SIG_IGN);
signal(SIGSEGV,SIG_IGN);
signal(SIGTERM,SIG_IGN);
}
#endif
/*
* Create a new FX/Mesa context and return a handle to it.
*/
fxMesaContext GLAPIENTRY fxMesaCreateContext(GLuint win,
GrScreenResolution_t res,
GrScreenRefresh_t ref,
const GLint attribList[])
{
fxMesaContext fxMesa = NULL;
int i,type;
int aux;
GLboolean doubleBuffer=GL_FALSE;
GLboolean alphaBuffer=GL_FALSE;
GLboolean verbose=GL_FALSE;
GLint depthSize=0;
GLint stencilSize=0;
GLint accumSize=0;
GLcontext *shareCtx = NULL;
GLcontext *ctx = 0;
/*FX_GrContext_t glideContext = 0;*/
char *errorstr;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaCreateContext() Start\n");
}
if(getenv("MESA_FX_INFO"))
verbose=GL_TRUE;
aux=0;
i=0;
while(attribList[i]!=FXMESA_NONE) {
switch (attribList[i]) {
case FXMESA_DOUBLEBUFFER:
doubleBuffer=GL_TRUE;
break;
case FXMESA_ALPHA_SIZE:
i++;
alphaBuffer=attribList[i]>0;
if(alphaBuffer)
aux=1;
break;
case FXMESA_DEPTH_SIZE:
i++;
depthSize=attribList[i];
if(depthSize) {
aux=1;
depthSize = 16;
}
break;
case FXMESA_STENCIL_SIZE:
i++;
stencilSize=attribList[i];
break;
case FXMESA_ACCUM_SIZE:
i++;
accumSize=attribList[i];
break;
/* XXX ugly hack here for sharing display lists */
#define FXMESA_SHARE_CONTEXT 990099 /* keep in sync with xmesa1.c! */
case FXMESA_SHARE_CONTEXT:
i++;
{
const void *vPtr = &attribList[i];
GLcontext **ctx = (GLcontext **) vPtr;
shareCtx = *ctx;
}
break;
default:
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaCreateContext() End (defualt)\n");
}
return NULL;
}
i++;
}
/* A workaround for Linux GLQuake */
if(depthSize && alphaBuffer)
alphaBuffer=0;
if(verbose)
fprintf(stderr,"Mesa fx Voodoo Device Driver v0.30\nWritten by David Bucciarelli (davibu@tin.it.it)\n");
if((type=fxQueryHardware()) < 0) {
fprintf(stderr,"fx Driver: ERROR no Voodoo1/2 Graphics or Voodoo Rush !\n");
return NULL;
}
if(type==GR_SSTTYPE_VOODOO)
win=0;
grSstSelect(glbCurrentBoard);
fxMesa=(fxMesaContext)calloc(1,sizeof(struct tfxMesaContext));
if(!fxMesa) {
errorstr = "malloc";
goto errorhandler;
}
if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_VOODOO)
fxMesa->haveTwoTMUs=(glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.nTexelfx > 1);
else if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_SST96)
fxMesa->haveTwoTMUs=(glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config.nTexelfx > 1);
else
fxMesa->haveTwoTMUs=GL_FALSE;
fxMesa->haveDoubleBuffer=doubleBuffer;
fxMesa->haveAlphaBuffer=alphaBuffer;
fxMesa->haveGlobalPaletteTexture=GL_FALSE;
fxMesa->haveZBuffer=depthSize ? 1 : 0;
fxMesa->verbose=verbose;
fxMesa->board=glbCurrentBoard;
fxMesa->glideContext = FX_grSstWinOpen((FxU32)win,res,ref,
#if FXMESA_USE_ARGB
GR_COLORFORMAT_ARGB,
#else
GR_COLORFORMAT_ABGR,
#endif
GR_ORIGIN_LOWER_LEFT,
2,aux);
if (!fxMesa->glideContext){
errorstr = "grSstWinOpen";
goto errorhandler;
}
/* Pixel tables are use during pixel read-back */
#if FXMESA_USE_ARGB
fxInitPixelTables(fxMesa, GL_FALSE); /* Force RGB pixel order */
#else
if (glbHWConfig.SSTs[glbCurrentBoard].type == GR_SSTTYPE_VOODOO) {
/* jk991130 - GROSS HACK!!! - Voodoo 3s don't use BGR!!
* the only way to tell if it's a Voodoo 3 at this stage of the
* ballgame (no Glide 3.x for linux *yet*) is to query the # of TMUs
* as Voodoo3s have 2 TMUs on board, Banshee has only 1
* Thanks to Joseph Kain for that one
*/
GrVoodooConfig_t *voodoo;
voodoo = &glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig;
printf("nTexelfx %d\n", voodoo->nTexelfx);
printf("fbRam %d\n", voodoo->fbRam);
printf("fbiRev %d\n", voodoo->fbiRev);
if (voodoo->nTexelfx == 2 && voodoo->fbiRev != 260) {
/* RGB pixel order (Voodoo3, but some Quantum3D models) */
fxInitPixelTables(fxMesa, GL_FALSE);
}
else {
/* BGR pixel order on Voodoo1/2, or certain Quantum3D models */
fxInitPixelTables(fxMesa, GL_TRUE);
}
}
else {
fxInitPixelTables(fxMesa, GL_FALSE); /* use RGB pixel order otherwise */
}
#endif
fxMesa->width=FX_grSstScreenWidth();
fxMesa->height=FX_grSstScreenHeight();
fxMesa->clipMinX = 0;
fxMesa->clipMaxX = fxMesa->width;
fxMesa->clipMinY = 0;
fxMesa->clipMaxY = fxMesa->height;
fxMesa->screen_width = fxMesa->width;
fxMesa->screen_height = fxMesa->height;
fxMesa->x_offset = 0;
fxMesa->y_offset = 0;
fxMesa->y_delta = 0;
fxMesa->needClip = 0;
if(verbose)
fprintf(stderr,"Glide screen size: %dx%d\n",
(int)FX_grSstScreenWidth(),(int)FX_grSstScreenHeight());
fxMesa->glVis=gl_create_visual(GL_TRUE, /* RGB mode */
alphaBuffer,
doubleBuffer,
GL_FALSE, /* stereo */
depthSize, /* depth_size */
stencilSize, /* stencil_size */
accumSize, /* accum_size */
0, /* index bits */
5,6,5,0); /* RGBA bits */
if (!fxMesa->glVis) {
errorstr = "gl_create_visual";
goto errorhandler;
}
ctx = fxMesa->glCtx=gl_create_context(fxMesa->glVis,
shareCtx, /* share list context */
(void *) fxMesa, GL_TRUE);
if (!ctx) {
errorstr = "gl_create_context";
goto errorhandler;
}
if (!fxDDInitFxMesaContext( fxMesa )) {
errorstr = "fxDDInitFxMesaContext failed";
goto errorhandler;
}
fxMesa->glBuffer=gl_create_framebuffer(fxMesa->glVis,
GL_FALSE, /* no software depth */
fxMesa->glVis->StencilBits > 0,
fxMesa->glVis->AccumBits > 0,
fxMesa->glVis->AlphaBits > 0 );
if (!fxMesa->glBuffer) {
errorstr = "gl_create_framebuffer";
goto errorhandler;
}
glbTotNumCtx++;
/* install signal handlers */
#if defined(__linux__)
/* Only install if environment var. is not set. */
if (fxMesa->glCtx->CatchSignals && !getenv("MESA_FX_NO_SIGNALS")) {
signal(SIGINT,cleangraphics_handler);
signal(SIGHUP,cleangraphics_handler);
signal(SIGPIPE,cleangraphics_handler);
signal(SIGFPE,cleangraphics_handler);
signal(SIGBUS,cleangraphics_handler);
signal(SIGILL,cleangraphics_handler);
signal(SIGSEGV,cleangraphics_handler);
signal(SIGTERM,cleangraphics_handler);
}
#endif
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaCreateContext() End\n");
}
return fxMesa;
errorhandler:
if (fxMesa) {
if (fxMesa->glideContext)
FX_grSstWinClose(fxMesa->glideContext);
fxMesa->glideContext = 0;
if (fxMesa->state)
free(fxMesa->state);
if (fxMesa->fogTable)
free(fxMesa->fogTable);
if (fxMesa->glBuffer)
gl_destroy_framebuffer(fxMesa->glBuffer);
if (fxMesa->glVis)
gl_destroy_visual(fxMesa->glVis);
if (fxMesa->glCtx)
gl_destroy_context(fxMesa->glCtx);
free(fxMesa);
}
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaCreateContext() End (%s)\n",errorstr);
}
return NULL;
}
/*
* Function to set the new window size in the context (mainly for the Voodoo Rush)
*/
void GLAPIENTRY fxMesaUpdateScreenSize(fxMesaContext fxMesa)
{
fxMesa->width=FX_grSstScreenWidth();
fxMesa->height=FX_grSstScreenHeight();
}
/*
* Destroy the given FX/Mesa context.
*/
void GLAPIENTRY fxMesaDestroyContext(fxMesaContext fxMesa)
{
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaDestroyContext()\n");
}
if(fxMesa) {
gl_destroy_visual(fxMesa->glVis);
gl_destroy_context(fxMesa->glCtx);
gl_destroy_framebuffer(fxMesa->glBuffer);
glbTotNumCtx--;
fxCloseHardware();
FX_grSstWinClose(fxMesa->glideContext);
if(fxMesa->verbose) {
fprintf(stderr,"Misc Stats:\n");
fprintf(stderr," # swap buffer: %u\n",fxMesa->stats.swapBuffer);
if(!fxMesa->stats.swapBuffer)
fxMesa->stats.swapBuffer=1;
fprintf(stderr,"Textures Stats:\n");
fprintf(stderr," Free texture memory on TMU0: %d:\n",fxMesa->freeTexMem[FX_TMU0]);
if(fxMesa->haveTwoTMUs)
fprintf(stderr," Free texture memory on TMU1: %d:\n",fxMesa->freeTexMem[FX_TMU1]);
fprintf(stderr," # request to TMM to upload a texture objects: %u\n",
fxMesa->stats.reqTexUpload);
fprintf(stderr," # request to TMM to upload a texture objects per swapbuffer: %.2f\n",
fxMesa->stats.reqTexUpload/(float)fxMesa->stats.swapBuffer);
fprintf(stderr," # texture objects uploaded: %u\n",
fxMesa->stats.texUpload);
fprintf(stderr," # texture objects uploaded per swapbuffer: %.2f\n",
fxMesa->stats.texUpload/(float)fxMesa->stats.swapBuffer);
fprintf(stderr," # MBs uploaded to texture memory: %.2f\n",
fxMesa->stats.memTexUpload/(float)(1<<20));
fprintf(stderr," # MBs uploaded to texture memory per swapbuffer: %.2f\n",
(fxMesa->stats.memTexUpload/(float)fxMesa->stats.swapBuffer)/(float)(1<<20));
}
if (fxMesa->state)
free(fxMesa->state);
if (fxMesa->fogTable)
free(fxMesa->fogTable);
fxTMClose(fxMesa);
free(fxMesa);
}
if(fxMesa==fxMesaCurrentCtx)
fxMesaCurrentCtx=NULL;
}
/*
* Make the specified FX/Mesa context the current one.
*/
void GLAPIENTRY fxMesaMakeCurrent(fxMesaContext fxMesa)
{
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaMakeCurrent(...) Start\n");
}
if(!fxMesa) {
gl_make_current(NULL,NULL);
fxMesaCurrentCtx=NULL;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaMakeCurrent(NULL) End\n");
}
return;
}
/* if this context is already the current one, we can return early */
if (fxMesaCurrentCtx == fxMesa
&& fxMesaCurrentCtx->glCtx == gl_get_current_context()) {
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaMakeCurrent(fxMesaCurrentCtx==fxMesa) End\n");
}
return;
}
if(fxMesaCurrentCtx)
grGlideGetState((GrState*)fxMesaCurrentCtx->state);
fxMesaCurrentCtx=fxMesa;
grSstSelect(fxMesa->board);
grGlideSetState((GrState*)fxMesa->state);
gl_make_current(fxMesa->glCtx,fxMesa->glBuffer);
fxSetupDDPointers(fxMesa->glCtx);
/* The first time we call MakeCurrent we set the initial viewport size */
if(fxMesa->glCtx->Viewport.Width==0)
gl_Viewport(fxMesa->glCtx,0,0,fxMesa->width,fxMesa->height);
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxMesaMakeCurrent(...) End\n");
}
}
/*
* Swap front/back buffers for current context if double buffered.
*/
void GLAPIENTRY fxMesaSwapBuffers(void)
{
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: ------------------------------- fxMesaSwapBuffers() -------------------------------\n");
}
if(fxMesaCurrentCtx) {
FLUSH_VB( fxMesaCurrentCtx->glCtx, "swap buffers" );
if(fxMesaCurrentCtx->haveDoubleBuffer) {
grBufferSwap(fxMesaCurrentCtx->swapInterval);
/*
* Don't allow swap buffer commands to build up!
*/
while(FX_grGetInteger(FX_PENDING_BUFFERSWAPS)>fxMesaCurrentCtx->maxPendingSwapBuffers)
/* The driver is able to sleep when waiting for the completation
of multiple swapbuffer operations instead of wasting
CPU time (NOTE: you must uncomment the following line in the
in order to enable this option) */
/* usleep(10000); */
;
fxMesaCurrentCtx->stats.swapBuffer++;
}
}
}
/*
* Query 3Dfx hardware presence/kind
*/
int GLAPIENTRY fxQueryHardware(void)
{
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxQueryHardware() Start\n");
}
if(!glbGlideInitialized) {
grGlideInit();
if(FX_grSstQueryHardware(&glbHWConfig)) {
grSstSelect(glbCurrentBoard);
glb3DfxPresent=1;
if(getenv("MESA_FX_INFO")) {
char buf[80];
FX_grGlideGetVersion(buf);
fprintf(stderr,"Using Glide V%s\n","");
fprintf(stderr,"Number of boards: %d\n",glbHWConfig.num_sst);
if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_VOODOO) {
fprintf(stderr,"Framebuffer RAM: %d\n",
glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.sliDetect ?
(glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.fbRam*2) :
glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.fbRam);
fprintf(stderr,"Number of TMUs: %d\n",
glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.nTexelfx);
fprintf(stderr,"SLI detected: %d\n",
glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.sliDetect);
} else if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_SST96) {
fprintf(stderr,"Framebuffer RAM: %d\n",
glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config.fbRam);
fprintf(stderr,"Number of TMUs: %d\n",
glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config.nTexelfx);
}
}
} else
glb3DfxPresent=0;
glbGlideInitialized=1;
#if defined(__WIN32__)
onexit((_onexit_t)cleangraphics);
#elif defined(__linux__)
/* Only register handler if environment variable is not defined. */
if (!getenv("MESA_FX_NO_SIGNALS")) {
atexit(cleangraphics);
}
#endif
}
if(!glb3DfxPresent) {
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxQueryHardware() End (-1)\n");
}
return(-1);
}
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxQueryHardware() End (voodooo)\n");
}
return(glbHWConfig.SSTs[glbCurrentBoard].type);
}
/*
* Shutdown Glide library
*/
void GLAPIENTRY fxCloseHardware(void)
{
if(glbGlideInitialized) {
if(getenv("MESA_FX_INFO")) {
GrSstPerfStats_t st;
FX_grSstPerfStats(&st);
fprintf(stderr,"Pixels Stats:\n");
fprintf(stderr," # pixels processed (minus buffer clears): %u\n",(unsigned)st.pixelsIn);
fprintf(stderr," # pixels not drawn due to chroma key test failure: %u\n",(unsigned)st.chromaFail);
fprintf(stderr," # pixels not drawn due to depth test failure: %u\n",(unsigned)st.zFuncFail);
fprintf(stderr," # pixels not drawn due to alpha test failure: %u\n",(unsigned)st.aFuncFail);
fprintf(stderr," # pixels drawn (including buffer clears and LFB writes): %u\n",(unsigned)st.pixelsOut);
}
if(glbTotNumCtx==0) {
grGlideShutdown();
glbGlideInitialized=0;
}
}
}
#else
/*
* Need this to provide at least one external definition.
*/
int gl_fx_dummy_function_api(void)
{
return 0;
}
#endif /* FX */