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Diffstat (limited to 'src/gallium/state_trackers/xlib/fakeglx.c')
| -rw-r--r-- | src/gallium/state_trackers/xlib/fakeglx.c | 3215 |
1 files changed, 3215 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/xlib/fakeglx.c b/src/gallium/state_trackers/xlib/fakeglx.c new file mode 100644 index 00000000000..fd2d222c859 --- /dev/null +++ b/src/gallium/state_trackers/xlib/fakeglx.c @@ -0,0 +1,3215 @@ +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2007 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. + */ + + +/* + * This is an emulation of the GLX API which allows Mesa/GLX-based programs + * to run on X servers which do not have the real GLX extension. + * + * Thanks to the contributors: + * + * Initial version: Philip Brown (phil@bolthole.com) + * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu) + * Further visual-handling refinements: Wolfram Gloger + * (wmglo@Dent.MED.Uni-Muenchen.DE). + * + * Notes: + * Don't be fooled, stereo isn't supported yet. + */ + + + +#include "glxheader.h" +#include "glxapi.h" +#include "GL/xmesa.h" +#include "context.h" +#include "config.h" +#include "macros.h" +#include "imports.h" +#include "mtypes.h" +#include "version.h" +#include "xfonts.h" +#include "xmesaP.h" +#include "state_tracker/st_context.h" +#include "state_tracker/st_public.h" + + +#ifdef __VMS +#define _mesa_sprintf sprintf +#endif + +/* This indicates the client-side GLX API and GLX encoder version. */ +#define CLIENT_MAJOR_VERSION 1 +#define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */ + +/* This indicates the server-side GLX decoder version. + * GLX 1.4 indicates OpenGL 1.3 support + */ +#define SERVER_MAJOR_VERSION 1 +#define SERVER_MINOR_VERSION 4 + +/* This is appended onto the glXGetClient/ServerString version strings. */ +#define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING + +/* Who implemented this GLX? */ +#define VENDOR "Brian Paul" + +#define EXTENSIONS \ + "GLX_MESA_set_3dfx_mode " \ + "GLX_MESA_copy_sub_buffer " \ + "GLX_MESA_pixmap_colormap " \ + "GLX_MESA_release_buffers " \ + "GLX_ARB_get_proc_address " \ + "GLX_EXT_texture_from_pixmap " \ + "GLX_EXT_visual_info " \ + "GLX_EXT_visual_rating " \ + /*"GLX_SGI_video_sync "*/ \ + "GLX_SGIX_fbconfig " \ + "GLX_SGIX_pbuffer " + +/* + * Our fake GLX context will contain a "real" GLX context and an XMesa context. + * + * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context, + * and vice versa. + * + * We really just need this structure in order to make the libGL functions + * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay() + * work correctly. + */ +struct fake_glx_context { + __GLXcontext glxContext; /* this MUST be first! */ + XMesaContext xmesaContext; +}; + + + +/**********************************************************************/ +/*** GLX Visual Code ***/ +/**********************************************************************/ + +#define DONT_CARE -1 + + +static XMesaVisual *VisualTable = NULL; +static int NumVisuals = 0; + + +/* + * This struct and some code fragments borrowed + * from Mark Kilgard's GLUT library. + */ +typedef struct _OverlayInfo { + /* Avoid 64-bit portability problems by being careful to use + longs due to the way XGetWindowProperty is specified. Note + that these parameters are passed as CARD32s over X + protocol. */ + unsigned long overlay_visual; + long transparent_type; + long value; + long layer; +} OverlayInfo; + + + +/* Macro to handle c_class vs class field name in XVisualInfo struct */ +#if defined(__cplusplus) || defined(c_plusplus) +#define CLASS c_class +#else +#define CLASS class +#endif + + + +/* + * Test if the given XVisualInfo is usable for Mesa rendering. + */ +static GLboolean +is_usable_visual( XVisualInfo *vinfo ) +{ + switch (vinfo->CLASS) { + case StaticGray: + case GrayScale: + /* Any StaticGray/GrayScale visual works in RGB or CI mode */ + return GL_TRUE; + case StaticColor: + case PseudoColor: + /* Any StaticColor/PseudoColor visual of at least 4 bits */ + if (vinfo->depth>=4) { + return GL_TRUE; + } + else { + return GL_FALSE; + } + case TrueColor: + case DirectColor: + /* Any depth of TrueColor or DirectColor works in RGB mode */ + return GL_TRUE; + default: + /* This should never happen */ + return GL_FALSE; + } +} + + + +/** + * Get an array OverlayInfo records for specified screen. + * \param dpy the display + * \param screen screen number + * \param numOverlays returns numver of OverlayInfo records + * \return pointer to OverlayInfo array, free with XFree() + */ +static OverlayInfo * +GetOverlayInfo(Display *dpy, int screen, int *numOverlays) +{ + Atom overlayVisualsAtom; + Atom actualType; + Status status; + unsigned char *ovInfo; + unsigned long sizeData, bytesLeft; + int actualFormat; + + /* + * The SERVER_OVERLAY_VISUALS property on the root window contains + * a list of overlay visuals. Get that list now. + */ + overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True); + if (overlayVisualsAtom == None) { + return 0; + } + + status = XGetWindowProperty(dpy, RootWindow(dpy, screen), + overlayVisualsAtom, 0L, (long) 10000, False, + overlayVisualsAtom, &actualType, &actualFormat, + &sizeData, &bytesLeft, + &ovInfo); + + if (status != Success || actualType != overlayVisualsAtom || + actualFormat != 32 || sizeData < 4) { + /* something went wrong */ + XFree((void *) ovInfo); + *numOverlays = 0; + return NULL; + } + + *numOverlays = sizeData / 4; + return (OverlayInfo *) ovInfo; +} + + + +/** + * Return the level (overlay, normal, underlay) of a given XVisualInfo. + * Input: dpy - the X display + * vinfo - the XVisualInfo to test + * Return: level of the visual: + * 0 = normal planes + * >0 = overlay planes + * <0 = underlay planes + */ +static int +level_of_visual( Display *dpy, XVisualInfo *vinfo ) +{ + OverlayInfo *overlay_info; + int numOverlaysPerScreen, i; + + overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen); + if (!overlay_info) { + return 0; + } + + /* search the overlay visual list for the visual ID of interest */ + for (i = 0; i < numOverlaysPerScreen; i++) { + const OverlayInfo *ov = overlay_info + i; + if (ov->overlay_visual == vinfo->visualid) { + /* found the visual */ + if (/*ov->transparent_type==1 &&*/ ov->layer!=0) { + int level = ov->layer; + XFree((void *) overlay_info); + return level; + } + else { + XFree((void *) overlay_info); + return 0; + } + } + } + + /* The visual ID was not found in the overlay list. */ + XFree((void *) overlay_info); + return 0; +} + + + + +/* + * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the + * configuration in our list of GLX visuals. + */ +static XMesaVisual +save_glx_visual( Display *dpy, XVisualInfo *vinfo, + GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag, + GLboolean stereoFlag, + GLint depth_size, GLint stencil_size, + GLint accumRedSize, GLint accumGreenSize, + GLint accumBlueSize, GLint accumAlphaSize, + GLint level, GLint numAuxBuffers ) +{ + GLboolean ximageFlag = GL_TRUE; + XMesaVisual xmvis; + GLint i; + GLboolean comparePointers; + + if (dbFlag) { + /* Check if the MESA_BACK_BUFFER env var is set */ + char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER"); + if (backbuffer) { + if (backbuffer[0]=='p' || backbuffer[0]=='P') { + ximageFlag = GL_FALSE; + } + else if (backbuffer[0]=='x' || backbuffer[0]=='X') { + ximageFlag = GL_TRUE; + } + else { + _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage."); + } + } + } + + if (stereoFlag) { + /* stereo not supported */ + return NULL; + } + + if (stencil_size > 0 && depth_size > 0) + depth_size = 24; + + /* Comparing IDs uses less memory but sometimes fails. */ + /* XXX revisit this after 3.0 is finished. */ + if (_mesa_getenv("MESA_GLX_VISUAL_HACK")) + comparePointers = GL_TRUE; + else + comparePointers = GL_FALSE; + + /* Force the visual to have an alpha channel */ + if (rgbFlag && _mesa_getenv("MESA_GLX_FORCE_ALPHA")) + alphaFlag = GL_TRUE; + + /* First check if a matching visual is already in the list */ + for (i=0; i<NumVisuals; i++) { + XMesaVisual v = VisualTable[i]; + if (v->display == dpy + && v->mesa_visual.level == level + && v->mesa_visual.numAuxBuffers == numAuxBuffers + && v->ximage_flag == ximageFlag + && v->mesa_visual.rgbMode == rgbFlag + && v->mesa_visual.doubleBufferMode == dbFlag + && v->mesa_visual.stereoMode == stereoFlag + && (v->mesa_visual.alphaBits > 0) == alphaFlag + && (v->mesa_visual.depthBits >= depth_size || depth_size == 0) + && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0) + && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0) + && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0) + && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0) + && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) { + /* now either compare XVisualInfo pointers or visual IDs */ + if ((!comparePointers && v->visinfo->visualid == vinfo->visualid) + || (comparePointers && v->vishandle == vinfo)) { + return v; + } + } + } + + /* Create a new visual and add it to the list. */ + + xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag, + stereoFlag, ximageFlag, + depth_size, stencil_size, + accumRedSize, accumBlueSize, + accumBlueSize, accumAlphaSize, 0, level, + GLX_NONE_EXT ); + if (xmvis) { + /* Save a copy of the pointer now so we can find this visual again + * if we need to search for it in find_glx_visual(). + */ + xmvis->vishandle = vinfo; + /* Allocate more space for additional visual */ + VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable, + sizeof(XMesaVisual) * NumVisuals, + sizeof(XMesaVisual) * (NumVisuals + 1)); + /* add xmvis to the list */ + VisualTable[NumVisuals] = xmvis; + NumVisuals++; + /* XXX minor hack, because XMesaCreateVisual doesn't support an + * aux buffers parameter. + */ + xmvis->mesa_visual.numAuxBuffers = numAuxBuffers; + } + return xmvis; +} + + +/** + * Return the default number of bits for the Z buffer. + * If defined, use the MESA_GLX_DEPTH_BITS env var value. + * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant. + * XXX probably do the same thing for stencil, accum, etc. + */ +static GLint +default_depth_bits(void) +{ + int zBits; + const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS"); + if (zEnv) + zBits = _mesa_atoi(zEnv); + else + zBits = DEFAULT_SOFTWARE_DEPTH_BITS; + return zBits; +} + +static GLint +default_alpha_bits(void) +{ + int aBits; + const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS"); + if (aEnv) + aBits = _mesa_atoi(aEnv); + else + aBits = 0; + return aBits; +} + +static GLint +default_accum_bits(void) +{ + return 16; +} + + + +/* + * Create a GLX visual from a regular XVisualInfo. + * This is called when Fake GLX is given an XVisualInfo which wasn't + * returned by glXChooseVisual. Since this is the first time we're + * considering this visual we'll take a guess at reasonable values + * for depth buffer size, stencil size, accum size, etc. + * This is the best we can do with a client-side emulation of GLX. + */ +static XMesaVisual +create_glx_visual( Display *dpy, XVisualInfo *visinfo ) +{ + int vislevel; + GLint zBits = default_depth_bits(); + GLint accBits = default_accum_bits(); + GLboolean alphaFlag = default_alpha_bits() > 0; + + vislevel = level_of_visual( dpy, visinfo ); + if (vislevel) { + /* Configure this visual as a CI, single-buffered overlay */ + return save_glx_visual( dpy, visinfo, + GL_FALSE, /* rgb */ + GL_FALSE, /* alpha */ + GL_FALSE, /* double */ + GL_FALSE, /* stereo */ + 0, /* depth bits */ + 0, /* stencil bits */ + 0,0,0,0, /* accum bits */ + vislevel, /* level */ + 0 /* numAux */ + ); + } + else if (is_usable_visual( visinfo )) { + if (_mesa_getenv("MESA_GLX_FORCE_CI")) { + /* Configure this visual as a COLOR INDEX visual. */ + return save_glx_visual( dpy, visinfo, + GL_FALSE, /* rgb */ + GL_FALSE, /* alpha */ + GL_TRUE, /* double */ + GL_FALSE, /* stereo */ + zBits, + STENCIL_BITS, + 0, 0, 0, 0, /* accum bits */ + 0, /* level */ + 0 /* numAux */ + ); + } + else { + /* Configure this visual as RGB, double-buffered, depth-buffered. */ + /* This is surely wrong for some people's needs but what else */ + /* can be done? They should use glXChooseVisual(). */ + return save_glx_visual( dpy, visinfo, + GL_TRUE, /* rgb */ + alphaFlag, /* alpha */ + GL_TRUE, /* double */ + GL_FALSE, /* stereo */ + zBits, + STENCIL_BITS, + accBits, /* r */ + accBits, /* g */ + accBits, /* b */ + accBits, /* a */ + 0, /* level */ + 0 /* numAux */ + ); + } + } + else { + _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n"); + return NULL; + } +} + + + +/* + * Find the GLX visual associated with an XVisualInfo. + */ +static XMesaVisual +find_glx_visual( Display *dpy, XVisualInfo *vinfo ) +{ + int i; + + /* try to match visual id */ + for (i=0;i<NumVisuals;i++) { + if (VisualTable[i]->display==dpy + && VisualTable[i]->visinfo->visualid == vinfo->visualid) { + return VisualTable[i]; + } + } + + /* if that fails, try to match pointers */ + for (i=0;i<NumVisuals;i++) { + if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) { + return VisualTable[i]; + } + } + + return NULL; +} + + + +/** + * Return the transparent pixel value for a GLX visual. + * Input: glxvis - the glx_visual + * Return: a pixel value or -1 if no transparent pixel + */ +static int +transparent_pixel( XMesaVisual glxvis ) +{ + Display *dpy = glxvis->display; + XVisualInfo *vinfo = glxvis->visinfo; + OverlayInfo *overlay_info; + int numOverlaysPerScreen, i; + + overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen); + if (!overlay_info) { + return -1; + } + + for (i = 0; i < numOverlaysPerScreen; i++) { + const OverlayInfo *ov = overlay_info + i; + if (ov->overlay_visual == vinfo->visualid) { + /* found it! */ + if (ov->transparent_type == 0) { + /* type 0 indicates no transparency */ + XFree((void *) overlay_info); + return -1; + } + else { + /* ov->value is the transparent pixel */ + XFree((void *) overlay_info); + return ov->value; + } + } + } + + /* The visual ID was not found in the overlay list. */ + XFree((void *) overlay_info); + return -1; +} + + + +/** + * Try to get an X visual which matches the given arguments. + */ +static XVisualInfo * +get_visual( Display *dpy, int scr, unsigned int depth, int xclass ) +{ + XVisualInfo temp, *vis; + long mask; + int n; + unsigned int default_depth; + int default_class; + + mask = VisualScreenMask | VisualDepthMask | VisualClassMask; + temp.screen = scr; + temp.depth = depth; + temp.CLASS = xclass; + + default_depth = DefaultDepth(dpy,scr); + default_class = DefaultVisual(dpy,scr)->CLASS; + + if (depth==default_depth && xclass==default_class) { + /* try to get root window's visual */ + temp.visualid = DefaultVisual(dpy,scr)->visualid; + mask |= VisualIDMask; + } + + vis = XGetVisualInfo( dpy, mask, &temp, &n ); + + /* In case bits/pixel > 24, make sure color channels are still <=8 bits. + * An SGI Infinite Reality system, for example, can have 30bpp pixels: + * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel. + */ + if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) { + if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 && + _mesa_bitcount((GLuint) vis->green_mask) <= 8 && + _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) { + return vis; + } + else { + XFree((void *) vis); + return NULL; + } + } + + return vis; +} + + + +/* + * Retrieve the value of the given environment variable and find + * the X visual which matches it. + * Input: dpy - the display + * screen - the screen number + * varname - the name of the environment variable + * Return: an XVisualInfo pointer to NULL if error. + */ +static XVisualInfo * +get_env_visual(Display *dpy, int scr, const char *varname) +{ + char value[100], type[100]; + int depth, xclass = -1; + XVisualInfo *vis; + + if (!_mesa_getenv( varname )) { + return NULL; + } + + _mesa_strncpy( value, _mesa_getenv(varname), 100 ); + value[99] = 0; + + sscanf( value, "%s %d", type, &depth ); + + if (_mesa_strcmp(type,"TrueColor")==0) xclass = TrueColor; + else if (_mesa_strcmp(type,"DirectColor")==0) xclass = DirectColor; + else if (_mesa_strcmp(type,"PseudoColor")==0) xclass = PseudoColor; + else if (_mesa_strcmp(type,"StaticColor")==0) xclass = StaticColor; + else if (_mesa_strcmp(type,"GrayScale")==0) xclass = GrayScale; + else if (_mesa_strcmp(type,"StaticGray")==0) xclass = StaticGray; + + if (xclass>-1 && depth>0) { + vis = get_visual( dpy, scr, depth, xclass ); + if (vis) { + return vis; + } + } + + _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.", + type, depth); + + return NULL; +} + + + +/* + * Select an X visual which satisfies the RGBA/CI flag and minimum depth. + * Input: dpy, screen - X display and screen number + * rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode + * min_depth - minimum visual depth + * preferred_class - preferred GLX visual class or DONT_CARE + * Return: pointer to an XVisualInfo or NULL. + */ +static XVisualInfo * +choose_x_visual( Display *dpy, int screen, GLboolean rgba, int min_depth, + int preferred_class ) +{ + XVisualInfo *vis; + int xclass, visclass = 0; + int depth; + + if (rgba) { + Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True); + /* First see if the MESA_RGB_VISUAL env var is defined */ + vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" ); + if (vis) { + return vis; + } + /* Otherwise, search for a suitable visual */ + if (preferred_class==DONT_CARE) { + for (xclass=0;xclass<6;xclass++) { + switch (xclass) { + case 0: visclass = TrueColor; break; + case 1: visclass = DirectColor; break; + case 2: visclass = PseudoColor; break; + case 3: visclass = StaticColor; break; + case 4: visclass = GrayScale; break; + case 5: visclass = StaticGray; break; + } + if (min_depth==0) { + /* start with shallowest */ + for (depth=0;depth<=32;depth++) { + if (visclass==TrueColor && depth==8 && !hp_cr_maps) { + /* Special case: try to get 8-bit PseudoColor before */ + /* 8-bit TrueColor */ + vis = get_visual( dpy, screen, 8, PseudoColor ); + if (vis) { + return vis; + } + } + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + } + else { + /* start with deepest */ + for (depth=32;depth>=min_depth;depth--) { + if (visclass==TrueColor && depth==8 && !hp_cr_maps) { + /* Special case: try to get 8-bit PseudoColor before */ + /* 8-bit TrueColor */ + vis = get_visual( dpy, screen, 8, PseudoColor ); + if (vis) { + return vis; + } + } + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + } + } + } + else { + /* search for a specific visual class */ + switch (preferred_class) { + case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break; + case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break; + case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break; + case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break; + case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break; + case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break; + default: return NULL; + } + if (min_depth==0) { + /* start with shallowest */ + for (depth=0;depth<=32;depth++) { + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + } + else { + /* start with deepest */ + for (depth=32;depth>=min_depth;depth--) { + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + } + } + } + else { + /* First see if the MESA_CI_VISUAL env var is defined */ + vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" ); + if (vis) { + return vis; + } + /* Otherwise, search for a suitable visual, starting with shallowest */ + if (preferred_class==DONT_CARE) { + for (xclass=0;xclass<4;xclass++) { + switch (xclass) { + case 0: visclass = PseudoColor; break; + case 1: visclass = StaticColor; break; + case 2: visclass = GrayScale; break; + case 3: visclass = StaticGray; break; + } + /* try 8-bit up through 16-bit */ + for (depth=8;depth<=16;depth++) { + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + /* try min_depth up to 8-bit */ + for (depth=min_depth;depth<8;depth++) { + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + } + } + else { + /* search for a specific visual class */ + switch (preferred_class) { + case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break; + case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break; + case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break; + case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break; + case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break; + case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break; + default: return NULL; + } + /* try 8-bit up through 16-bit */ + for (depth=8;depth<=16;depth++) { + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + /* try min_depth up to 8-bit */ + for (depth=min_depth;depth<8;depth++) { + vis = get_visual( dpy, screen, depth, visclass ); + if (vis) { + return vis; + } + } + } + } + + /* didn't find a visual */ + return NULL; +} + + + +/* + * Find the deepest X over/underlay visual of at least min_depth. + * Input: dpy, screen - X display and screen number + * level - the over/underlay level + * trans_type - transparent pixel type: GLX_NONE_EXT, + * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT, + * or DONT_CARE + * trans_value - transparent pixel value or DONT_CARE + * min_depth - minimum visual depth + * preferred_class - preferred GLX visual class or DONT_CARE + * Return: pointer to an XVisualInfo or NULL. + */ +static XVisualInfo * +choose_x_overlay_visual( Display *dpy, int scr, GLboolean rgbFlag, + int level, int trans_type, int trans_value, + int min_depth, int preferred_class ) +{ + OverlayInfo *overlay_info; + int numOverlaysPerScreen; + int i; + XVisualInfo *deepvis; + int deepest; + + /*DEBUG int tt, tv; */ + + switch (preferred_class) { + case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break; + case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break; + case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break; + case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break; + case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break; + case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break; + default: preferred_class = DONT_CARE; + } + + overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen); + if (!overlay_info) { + return NULL; + } + + /* Search for the deepest overlay which satisifies all criteria. */ + deepest = min_depth; + deepvis = NULL; + + for (i = 0; i < numOverlaysPerScreen; i++) { + const OverlayInfo *ov = overlay_info + i; + XVisualInfo *vislist, vistemplate; + int count; + + if (ov->layer!=level) { + /* failed overlay level criteria */ + continue; + } + if (!(trans_type==DONT_CARE + || (trans_type==GLX_TRANSPARENT_INDEX_EXT + && ov->transparent_type>0) + || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) { + /* failed transparent pixel type criteria */ + continue; + } + if (trans_value!=DONT_CARE && trans_value!=ov->value) { + /* failed transparent pixel value criteria */ + continue; + } + + /* get XVisualInfo and check the depth */ + vistemplate.visualid = ov->overlay_visual; + vistemplate.screen = scr; + vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask, + &vistemplate, &count ); + + if (count!=1) { + /* something went wrong */ + continue; + } + if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) { + /* wrong visual class */ + continue; + } + + /* if RGB was requested, make sure we have True/DirectColor */ + if (rgbFlag && vislist->CLASS != TrueColor + && vislist->CLASS != DirectColor) + continue; + + /* if CI was requested, make sure we have a color indexed visual */ + if (!rgbFlag + && (vislist->CLASS == TrueColor || vislist->CLASS == DirectColor)) + continue; + + if (deepvis==NULL || vislist->depth > deepest) { + /* YES! found a satisfactory visual */ + if (deepvis) { + XFree( deepvis ); + } + deepest = vislist->depth; + deepvis = vislist; + /* DEBUG tt = ov->transparent_type;*/ + /* DEBUG tv = ov->value; */ + } + } + +/*DEBUG + if (deepvis) { + printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n", + deepvis->visualid, level, deepvis->depth, tt, tv ); + } +*/ + return deepvis; +} + + +/**********************************************************************/ +/*** Display-related functions ***/ +/**********************************************************************/ + + +/** + * Free all XMesaVisuals which are associated with the given display. + */ +static void +destroy_visuals_on_display(Display *dpy) +{ + int i; + for (i = 0; i < NumVisuals; i++) { + if (VisualTable[i]->display == dpy) { + /* remove this visual */ + int j; + free(VisualTable[i]); + for (j = i; j < NumVisuals - 1; j++) + VisualTable[j] = VisualTable[j + 1]; + NumVisuals--; + } + } +} + + +/** + * Called from XCloseDisplay() to let us free our display-related data. + */ +static int +close_display_callback(Display *dpy, XExtCodes *codes) +{ + destroy_visuals_on_display(dpy); + xmesa_destroy_buffers_on_display(dpy); + return 0; +} + + +/** + * Look for the named extension on given display and return a pointer + * to the _XExtension data, or NULL if extension not found. + */ +static _XExtension * +lookup_extension(Display *dpy, const char *extName) +{ + _XExtension *ext; + for (ext = dpy->ext_procs; ext; ext = ext->next) { + if (ext->name && strcmp(ext->name, extName) == 0) { + return ext; + } + } + return NULL; +} + + +/** + * Whenever we're given a new Display pointer, call this function to + * register our close_display_callback function. + */ +static void +register_with_display(Display *dpy) +{ + const char *extName = "MesaGLX"; + _XExtension *ext; + + ext = lookup_extension(dpy, extName); + if (!ext) { + XExtCodes *c = XAddExtension(dpy); + ext = dpy->ext_procs; /* new extension is at head of list */ + assert(c->extension == ext->codes.extension); + ext->name = _mesa_strdup(extName); + ext->close_display = close_display_callback; + } +} + + +/**********************************************************************/ +/*** Begin Fake GLX API Functions ***/ +/**********************************************************************/ + + +/** + * Helper used by glXChooseVisual and glXChooseFBConfig. + * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for + * the later. + * In either case, the attribute list is terminated with the value 'None'. + */ +static XMesaVisual +choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig ) +{ + const GLboolean rgbModeDefault = fbConfig; + const int *parselist; + XVisualInfo *vis; + int min_ci = 0; + int min_red=0, min_green=0, min_blue=0; + GLboolean rgb_flag = rgbModeDefault; + GLboolean alpha_flag = GL_FALSE; + GLboolean double_flag = GL_FALSE; + GLboolean stereo_flag = GL_FALSE; + GLint depth_size = 0; + GLint stencil_size = 0; + GLint accumRedSize = 0; + GLint accumGreenSize = 0; + GLint accumBlueSize = 0; + GLint accumAlphaSize = 0; + int level = 0; + int visual_type = DONT_CARE; + int trans_type = DONT_CARE; + int trans_value = DONT_CARE; + GLint caveat = DONT_CARE; + XMesaVisual xmvis = NULL; + int desiredVisualID = -1; + int numAux = 0; + + parselist = list; + + while (*parselist) { + + switch (*parselist) { + case GLX_USE_GL: + if (fbConfig) { + /* invalid token */ + return NULL; + } + else { + /* skip */ + parselist++; + } + break; + case GLX_BUFFER_SIZE: + parselist++; + min_ci = *parselist++; + break; + case GLX_LEVEL: + parselist++; + level = *parselist++; + break; + case GLX_RGBA: + if (fbConfig) { + /* invalid token */ + return NULL; + } + else { + rgb_flag = GL_TRUE; + parselist++; + } + break; + case GLX_DOUBLEBUFFER: + parselist++; + if (fbConfig) { + double_flag = *parselist++; + } + else { + double_flag = GL_TRUE; + } + break; + case GLX_STEREO: + parselist++; + if (fbConfig) { + stereo_flag = *parselist++; + } + else { + stereo_flag = GL_TRUE; + } + break; + case GLX_AUX_BUFFERS: + parselist++; + numAux = *parselist++; + if (numAux > MAX_AUX_BUFFERS) + return NULL; + break; + case GLX_RED_SIZE: + parselist++; + min_red = *parselist++; + break; + case GLX_GREEN_SIZE: + parselist++; + min_green = *parselist++; + break; + case GLX_BLUE_SIZE: + parselist++; + min_blue = *parselist++; + break; + case GLX_ALPHA_SIZE: + parselist++; + { + GLint size = *parselist++; + alpha_flag = size ? GL_TRUE : GL_FALSE; + } + break; + case GLX_DEPTH_SIZE: + parselist++; + depth_size = *parselist++; + break; + case GLX_STENCIL_SIZE: + parselist++; + stencil_size = *parselist++; + break; + case GLX_ACCUM_RED_SIZE: + parselist++; + { + GLint size = *parselist++; + accumRedSize = MAX2( accumRedSize, size ); + } + break; + case GLX_ACCUM_GREEN_SIZE: + parselist++; + { + GLint size = *parselist++; + accumGreenSize = MAX2( accumGreenSize, size ); + } + break; + case GLX_ACCUM_BLUE_SIZE: + parselist++; + { + GLint size = *parselist++; + accumBlueSize = MAX2( accumBlueSize, size ); + } + break; + case GLX_ACCUM_ALPHA_SIZE: + parselist++; + { + GLint size = *parselist++; + accumAlphaSize = MAX2( accumAlphaSize, size ); + } + break; + + /* + * GLX_EXT_visual_info extension + */ + case GLX_X_VISUAL_TYPE_EXT: + parselist++; + visual_type = *parselist++; + break; + case GLX_TRANSPARENT_TYPE_EXT: + parselist++; + trans_type = *parselist++; + break; + case GLX_TRANSPARENT_INDEX_VALUE_EXT: + parselist++; + trans_value = *parselist++; + break; + case GLX_TRANSPARENT_RED_VALUE_EXT: + case GLX_TRANSPARENT_GREEN_VALUE_EXT: + case GLX_TRANSPARENT_BLUE_VALUE_EXT: + case GLX_TRANSPARENT_ALPHA_VALUE_EXT: + /* ignore */ + parselist++; + parselist++; + break; + + /* + * GLX_EXT_visual_info extension + */ + case GLX_VISUAL_CAVEAT_EXT: + parselist++; + caveat = *parselist++; /* ignored for now */ + break; + + /* + * GLX_ARB_multisample + */ + case GLX_SAMPLE_BUFFERS_ARB: + /* ms not supported */ + return NULL; + case GLX_SAMPLES_ARB: + /* ms not supported */ + return NULL; + + /* + * FBConfig attribs. + */ + case GLX_RENDER_TYPE: + if (!fbConfig) + return NULL; + parselist++; + if (*parselist == GLX_RGBA_BIT) { + rgb_flag = GL_TRUE; + } + else if (*parselist == GLX_COLOR_INDEX_BIT) { + rgb_flag = GL_FALSE; + } + else if (*parselist == 0) { + rgb_flag = GL_TRUE; + } + parselist++; + break; + case GLX_DRAWABLE_TYPE: + if (!fbConfig) + return NULL; + parselist++; + if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) { + return NULL; /* bad bit */ + } + parselist++; + break; + case GLX_FBCONFIG_ID: + if (!fbConfig) + return NULL; + parselist++; + desiredVisualID = *parselist++; + break; + case GLX_X_RENDERABLE: + if (!fbConfig) + return NULL; + parselist += 2; + /* ignore */ + break; + +#ifdef GLX_EXT_texture_from_pixmap + case GLX_BIND_TO_TEXTURE_RGB_EXT: + parselist++; /*skip*/ + break; + case GLX_BIND_TO_TEXTURE_RGBA_EXT: + parselist++; /*skip*/ + break; + case GLX_BIND_TO_MIPMAP_TEXTURE_EXT: + parselist++; /*skip*/ + break; + case GLX_BIND_TO_TEXTURE_TARGETS_EXT: + parselist++; + if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT | + GLX_TEXTURE_2D_BIT_EXT | + GLX_TEXTURE_RECTANGLE_BIT_EXT)) { + /* invalid bit */ + return NULL; + } + break; + case GLX_Y_INVERTED_EXT: + parselist++; /*skip*/ + break; +#endif + + case None: + /* end of list */ + break; + + default: + /* undefined attribute */ + _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()", + *parselist); + return NULL; + } + } + + (void) caveat; + + /* + * Since we're only simulating the GLX extension this function will never + * find any real GL visuals. Instead, all we can do is try to find an RGB + * or CI visual of appropriate depth. Other requested attributes such as + * double buffering, depth buffer, etc. will be associated with the X + * visual and stored in the VisualTable[]. + */ + if (desiredVisualID != -1) { + /* try to get a specific visual, by visualID */ + XVisualInfo temp; + int n; + temp.visualid = desiredVisualID; + temp.screen = screen; + vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n); + if (vis) { + /* give the visual some useful GLX attributes */ + double_flag = GL_TRUE; + if (vis->depth > 8) + rgb_flag = GL_TRUE; + depth_size = default_depth_bits(); + stencil_size = STENCIL_BITS; + /* XXX accum??? */ + } + } + else if (level==0) { + /* normal color planes */ + if (rgb_flag) { + /* Get an RGB visual */ + int min_rgb = min_red + min_green + min_blue; + if (min_rgb>1 && min_rgb<8) { + /* a special case to be sure we can get a monochrome visual */ + min_rgb = 1; + } + vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type ); + } + else { + /* Get a color index visual */ + vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type ); + accumRedSize = accumGreenSize = accumBlueSize = accumAlphaSize = 0; + } + } + else { + /* over/underlay planes */ + if (rgb_flag) { + /* rgba overlay */ + int min_rgb = min_red + min_green + min_blue; + if (min_rgb>1 && min_rgb<8) { + /* a special case to be sure we can get a monochrome visual */ + min_rgb = 1; + } + vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level, + trans_type, trans_value, min_rgb, visual_type ); + } + else { + /* color index overlay */ + vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level, + trans_type, trans_value, min_ci, visual_type ); + } + } + + if (vis) { + /* Note: we're not exactly obeying the glXChooseVisual rules here. + * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the + * largest depth buffer size, which is 32bits/value. Instead, we + * return 16 to maintain performance with earlier versions of Mesa. + */ + if (stencil_size > 0) + depth_size = 24; /* if Z and stencil, always use 24+8 format */ + else if (depth_size > 24) + depth_size = 32; + else if (depth_size > 16) + depth_size = 24; + else if (depth_size > 0) { + depth_size = default_depth_bits(); + } + + if (!alpha_flag) { + alpha_flag = default_alpha_bits() > 0; + } + + /* we only support one size of stencil and accum buffers. */ + if (stencil_size > 0) + stencil_size = STENCIL_BITS; + if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 || + accumAlphaSize > 0) { + accumRedSize = + accumGreenSize = + accumBlueSize = default_accum_bits(); + accumAlphaSize = alpha_flag ? accumRedSize : 0; + } + + xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag, + stereo_flag, depth_size, stencil_size, + accumRedSize, accumGreenSize, + accumBlueSize, accumAlphaSize, level, numAux ); + } + + return xmvis; +} + + +static XVisualInfo * +Fake_glXChooseVisual( Display *dpy, int screen, int *list ) +{ + XMesaVisual xmvis; + + /* register ourselves as an extension on this display */ + register_with_display(dpy); + + xmvis = choose_visual(dpy, screen, list, GL_FALSE); + if (xmvis) { +#if 0 + return xmvis->vishandle; +#else + /* create a new vishandle - the cached one may be stale */ + xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo)); + if (xmvis->vishandle) { + _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo)); + } + return xmvis->vishandle; +#endif + } + else + return NULL; +} + + +static GLXContext +Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo, + GLXContext share_list, Bool direct ) +{ + XMesaVisual xmvis; + struct fake_glx_context *glxCtx; + struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list; + + if (!dpy || !visinfo) + return 0; + + glxCtx = CALLOC_STRUCT(fake_glx_context); + if (!glxCtx) + return 0; + + /* deallocate unused windows/buffers */ +#if 0 + XMesaGarbageCollect(); +#endif + + xmvis = find_glx_visual( dpy, visinfo ); + if (!xmvis) { + /* This visual wasn't found with glXChooseVisual() */ + xmvis = create_glx_visual( dpy, visinfo ); + if (!xmvis) { + /* unusable visual */ + _mesa_free(glxCtx); + return NULL; + } + } + + glxCtx->xmesaContext = XMesaCreateContext(xmvis, + shareCtx ? shareCtx->xmesaContext : NULL); + if (!glxCtx->xmesaContext) { + _mesa_free(glxCtx); + return NULL; + } + + glxCtx->glxContext.isDirect = GL_FALSE; + glxCtx->glxContext.currentDpy = dpy; + glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */ + + assert((void *) glxCtx == (void *) &(glxCtx->glxContext)); + + return (GLXContext) glxCtx; +} + + +/* XXX these may have to be removed due to thread-safety issues. */ +static GLXContext MakeCurrent_PrevContext = 0; +static GLXDrawable MakeCurrent_PrevDrawable = 0; +static GLXDrawable MakeCurrent_PrevReadable = 0; +static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0; +static XMesaBuffer MakeCurrent_PrevReadBuffer = 0; + + +/* GLX 1.3 and later */ +static Bool +Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw, + GLXDrawable read, GLXContext ctx ) +{ + struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx; + static boolean firsttime = 1, no_rast = 0; + + if (firsttime) { + no_rast = getenv("SP_NO_RAST") != NULL; + firsttime = 0; + } + + + if (ctx && draw && read) { + XMesaBuffer drawBuffer, readBuffer; + XMesaContext xmctx = glxCtx->xmesaContext; + + /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */ + if (ctx == MakeCurrent_PrevContext + && draw == MakeCurrent_PrevDrawable) { + drawBuffer = MakeCurrent_PrevDrawBuffer; + } + else { + drawBuffer = XMesaFindBuffer( dpy, draw ); + } + if (!drawBuffer) { + /* drawable must be a new window! */ + drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw ); + if (!drawBuffer) { + /* Out of memory, or context/drawable depth mismatch */ + return False; + } +#ifdef FX + FXcreateContext( xmctx->xm_visual, draw, xmctx, drawBuffer ); +#endif + } + + /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */ + if (ctx == MakeCurrent_PrevContext + && read == MakeCurrent_PrevReadable) { + readBuffer = MakeCurrent_PrevReadBuffer; + } + else { + readBuffer = XMesaFindBuffer( dpy, read ); + } + if (!readBuffer) { + /* drawable must be a new window! */ + readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read ); + if (!readBuffer) { + /* Out of memory, or context/drawable depth mismatch */ + return False; + } +#ifdef FX + FXcreateContext( xmctx->xm_visual, read, xmctx, readBuffer ); +#endif + } + + if (no_rast && + MakeCurrent_PrevContext == ctx && + MakeCurrent_PrevDrawable == draw && + MakeCurrent_PrevReadable == read && + MakeCurrent_PrevDrawBuffer == drawBuffer && + MakeCurrent_PrevReadBuffer == readBuffer) + return True; + + MakeCurrent_PrevContext = ctx; + MakeCurrent_PrevDrawable = draw; + MakeCurrent_PrevReadable = read; + MakeCurrent_PrevDrawBuffer = drawBuffer; + MakeCurrent_PrevReadBuffer = readBuffer; + + /* Now make current! */ + if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) { + ((__GLXcontext *) ctx)->currentDpy = dpy; + ((__GLXcontext *) ctx)->currentDrawable = draw; + ((__GLXcontext *) ctx)->currentReadable = read; + return True; + } + else { + return False; + } + } + else if (!ctx && !draw && !read) { + /* release current context w/out assigning new one. */ + XMesaMakeCurrent( NULL, NULL ); + MakeCurrent_PrevContext = 0; + MakeCurrent_PrevDrawable = 0; + MakeCurrent_PrevReadable = 0; + MakeCurrent_PrevDrawBuffer = 0; + MakeCurrent_PrevReadBuffer = 0; + return True; + } + else { + /* The args must either all be non-zero or all zero. + * This is an error. + */ + return False; + } +} + + +static Bool +Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx ) +{ + return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx ); +} + + +static GLXPixmap +Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap ) +{ + XMesaVisual v; + XMesaBuffer b; + + v = find_glx_visual( dpy, visinfo ); + if (!v) { + v = create_glx_visual( dpy, visinfo ); + if (!v) { + /* unusable visual */ + return 0; + } + } + + b = XMesaCreatePixmapBuffer( v, pixmap, 0 ); + if (!b) { + return 0; + } + return b->drawable; +} + + +/*** GLX_MESA_pixmap_colormap ***/ + +static GLXPixmap +Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo, + Pixmap pixmap, Colormap cmap ) +{ + XMesaVisual v; + XMesaBuffer b; + + v = find_glx_visual( dpy, visinfo ); + if (!v) { + v = create_glx_visual( dpy, visinfo ); + if (!v) { + /* unusable visual */ + return 0; + } + } + + b = XMesaCreatePixmapBuffer( v, pixmap, cmap ); + if (!b) { + return 0; + } + return b->drawable; +} + + +static void +Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap ) +{ + XMesaBuffer b = XMesaFindBuffer(dpy, pixmap); + if (b) { + XMesaDestroyBuffer(b); + } + else if (_mesa_getenv("MESA_DEBUG")) { + _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n"); + } +} + + +static void +Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst, + unsigned long mask ) +{ + struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src; + struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst; + XMesaContext xm_src = fakeSrc->xmesaContext; + XMesaContext xm_dst = fakeDst->xmesaContext; + (void) dpy; + if (MakeCurrent_PrevContext == src) { + _mesa_Flush(); + } + st_copy_context_state( xm_src->st, xm_dst->st, (GLuint) mask ); +} + + +static Bool +Fake_glXQueryExtension( Display *dpy, int *errorb, int *event ) +{ + /* Mesa's GLX isn't really an X extension but we try to act like one. */ + (void) dpy; + (void) errorb; + (void) event; + return True; +} + + +extern void _kw_ungrab_all( Display *dpy ); +void _kw_ungrab_all( Display *dpy ) +{ + XUngrabPointer( dpy, CurrentTime ); + XUngrabKeyboard( dpy, CurrentTime ); +} + + +static void +Fake_glXDestroyContext( Display *dpy, GLXContext ctx ) +{ + struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx; + (void) dpy; + MakeCurrent_PrevContext = 0; + MakeCurrent_PrevDrawable = 0; + MakeCurrent_PrevReadable = 0; + MakeCurrent_PrevDrawBuffer = 0; + MakeCurrent_PrevReadBuffer = 0; + XMesaDestroyContext( glxCtx->xmesaContext ); + XMesaGarbageCollect(); + _mesa_free(glxCtx); +} + + +static Bool +Fake_glXIsDirect( Display *dpy, GLXContext ctx ) +{ + (void) dpy; + (void) ctx; + return False; +} + + + +static void +Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable ) +{ + XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable ); + static boolean firsttime = 1, no_rast = 0; + + if (firsttime) { + no_rast = getenv("SP_NO_RAST") != NULL; + firsttime = 0; + } + + if (no_rast) + return; + + if (buffer) { + XMesaSwapBuffers(buffer); + } + else if (_mesa_getenv("MESA_DEBUG")) { + _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n", + (int) drawable); + } +} + + + +/*** GLX_MESA_copy_sub_buffer ***/ + +static void +Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable, + int x, int y, int width, int height ) +{ + XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable ); + if (buffer) { + XMesaCopySubBuffer(buffer, x, y, width, height); + } + else if (_mesa_getenv("MESA_DEBUG")) { + _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n"); + } +} + + +static Bool +Fake_glXQueryVersion( Display *dpy, int *maj, int *min ) +{ + (void) dpy; + /* Return GLX version, not Mesa version */ + assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION); + *maj = CLIENT_MAJOR_VERSION; + *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION ); + return True; +} + + +/* + * Query the GLX attributes of the given XVisualInfo. + */ +static int +get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig ) +{ + ASSERT(xmvis); + switch(attrib) { + case GLX_USE_GL: + if (fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = (int) True; + return 0; + case GLX_BUFFER_SIZE: + *value = xmvis->visinfo->depth; + return 0; + case GLX_LEVEL: + *value = xmvis->mesa_visual.level; + return 0; + case GLX_RGBA: + if (fbconfig) + return GLX_BAD_ATTRIBUTE; + if (xmvis->mesa_visual.rgbMode) { + *value = True; + } + else { + *value = False; + } + return 0; + case GLX_DOUBLEBUFFER: + *value = (int) xmvis->mesa_visual.doubleBufferMode; + return 0; + case GLX_STEREO: + *value = (int) xmvis->mesa_visual.stereoMode; + return 0; + case GLX_AUX_BUFFERS: + *value = xmvis->mesa_visual.numAuxBuffers; + return 0; + case GLX_RED_SIZE: + *value = xmvis->mesa_visual.redBits; + return 0; + case GLX_GREEN_SIZE: + *value = xmvis->mesa_visual.greenBits; + return 0; + case GLX_BLUE_SIZE: + *value = xmvis->mesa_visual.blueBits; + return 0; + case GLX_ALPHA_SIZE: + *value = xmvis->mesa_visual.alphaBits; + return 0; + case GLX_DEPTH_SIZE: + *value = xmvis->mesa_visual.depthBits; + return 0; + case GLX_STENCIL_SIZE: + *value = xmvis->mesa_visual.stencilBits; + return 0; + case GLX_ACCUM_RED_SIZE: + *value = xmvis->mesa_visual.accumRedBits; + return 0; + case GLX_ACCUM_GREEN_SIZE: + *value = xmvis->mesa_visual.accumGreenBits; + return 0; + case GLX_ACCUM_BLUE_SIZE: + *value = xmvis->mesa_visual.accumBlueBits; + return 0; + case GLX_ACCUM_ALPHA_SIZE: + *value = xmvis->mesa_visual.accumAlphaBits; + return 0; + + /* + * GLX_EXT_visual_info extension + */ + case GLX_X_VISUAL_TYPE_EXT: + switch (xmvis->visinfo->CLASS) { + case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0; + case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0; + case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0; + case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0; + case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0; + case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0; + } + return 0; + case GLX_TRANSPARENT_TYPE_EXT: + if (xmvis->mesa_visual.level==0) { + /* normal planes */ + *value = GLX_NONE_EXT; + } + else if (xmvis->mesa_visual.level>0) { + /* overlay */ + if (xmvis->mesa_visual.rgbMode) { + *value = GLX_TRANSPARENT_RGB_EXT; + } + else { + *value = GLX_TRANSPARENT_INDEX_EXT; + } + } + else if (xmvis->mesa_visual.level<0) { + /* underlay */ + *value = GLX_NONE_EXT; + } + return 0; + case GLX_TRANSPARENT_INDEX_VALUE_EXT: + { + int pixel = transparent_pixel( xmvis ); + if (pixel>=0) { + *value = pixel; + } + /* else undefined */ + } + return 0; + case GLX_TRANSPARENT_RED_VALUE_EXT: + /* undefined */ + return 0; + case GLX_TRANSPARENT_GREEN_VALUE_EXT: + /* undefined */ + return 0; + case GLX_TRANSPARENT_BLUE_VALUE_EXT: + /* undefined */ + return 0; + case GLX_TRANSPARENT_ALPHA_VALUE_EXT: + /* undefined */ + return 0; + + /* + * GLX_EXT_visual_info extension + */ + case GLX_VISUAL_CAVEAT_EXT: + /* test for zero, just in case */ + if (xmvis->mesa_visual.visualRating > 0) + *value = xmvis->mesa_visual.visualRating; + else + *value = GLX_NONE_EXT; + return 0; + + /* + * GLX_ARB_multisample + */ + case GLX_SAMPLE_BUFFERS_ARB: + *value = 0; + return 0; + case GLX_SAMPLES_ARB: + *value = 0; + return 0; + + /* + * For FBConfigs: + */ + case GLX_SCREEN_EXT: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = xmvis->visinfo->screen; + break; + case GLX_DRAWABLE_TYPE: /*SGIX too */ + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT; + break; + case GLX_RENDER_TYPE_SGIX: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + if (xmvis->mesa_visual.rgbMode) + *value = GLX_RGBA_BIT; + else + *value = GLX_COLOR_INDEX_BIT; + break; + case GLX_X_RENDERABLE_SGIX: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = True; /* XXX really? */ + break; + case GLX_FBCONFIG_ID_SGIX: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = xmvis->visinfo->visualid; + break; + case GLX_MAX_PBUFFER_WIDTH: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + /* XXX or MAX_WIDTH? */ + *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen); + break; + case GLX_MAX_PBUFFER_HEIGHT: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen); + break; + case GLX_MAX_PBUFFER_PIXELS: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) * + DisplayHeight(xmvis->display, xmvis->visinfo->screen); + break; + case GLX_VISUAL_ID: + if (!fbconfig) + return GLX_BAD_ATTRIBUTE; + *value = xmvis->visinfo->visualid; + break; + +#ifdef GLX_EXT_texture_from_pixmap + case GLX_BIND_TO_TEXTURE_RGB_EXT: + *value = True; /*XXX*/ + break; + case GLX_BIND_TO_TEXTURE_RGBA_EXT: + /* XXX review */ + *value = xmvis->mesa_visual.alphaBits > 0 ? True : False; + break; + case GLX_BIND_TO_MIPMAP_TEXTURE_EXT: + *value = True; /*XXX*/ + break; + case GLX_BIND_TO_TEXTURE_TARGETS_EXT: + *value = (GLX_TEXTURE_1D_BIT_EXT | + GLX_TEXTURE_2D_BIT_EXT | + GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/ + break; + case GLX_Y_INVERTED_EXT: + *value = True; /*XXX*/ + break; +#endif + + default: + return GLX_BAD_ATTRIBUTE; + } + return Success; +} + + +static int +Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo, + int attrib, int *value ) +{ + XMesaVisual xmvis; + int k; + if (!dpy || !visinfo) + return GLX_BAD_ATTRIBUTE; + + xmvis = find_glx_visual( dpy, visinfo ); + if (!xmvis) { + /* this visual wasn't obtained with glXChooseVisual */ + xmvis = create_glx_visual( dpy, visinfo ); + if (!xmvis) { + /* this visual can't be used for GL rendering */ + if (attrib==GLX_USE_GL) { + *value = (int) False; + return 0; + } + else { + return GLX_BAD_VISUAL; + } + } + } + + k = get_config(xmvis, attrib, value, GL_FALSE); + return k; +} + + +static void +Fake_glXWaitGL( void ) +{ + XMesaContext xmesa = XMesaGetCurrentContext(); + XMesaFlush( xmesa ); +} + + + +static void +Fake_glXWaitX( void ) +{ + XMesaContext xmesa = XMesaGetCurrentContext(); + XMesaFlush( xmesa ); +} + + +static const char * +get_extensions( void ) +{ +#ifdef FX + const char *fx = _mesa_getenv("MESA_GLX_FX"); + if (fx && fx[0] != 'd') { + return EXTENSIONS; + } +#endif + return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */ +} + + + +/* GLX 1.1 and later */ +static const char * +Fake_glXQueryExtensionsString( Display *dpy, int screen ) +{ + (void) dpy; + (void) screen; + return get_extensions(); +} + + + +/* GLX 1.1 and later */ +static const char * +Fake_glXQueryServerString( Display *dpy, int screen, int name ) +{ + static char version[1000]; + _mesa_sprintf(version, "%d.%d %s", + SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION); + + (void) dpy; + (void) screen; + + switch (name) { + case GLX_EXTENSIONS: + return get_extensions(); + case GLX_VENDOR: + return VENDOR; + case GLX_VERSION: + return version; + default: + return NULL; + } +} + + + +/* GLX 1.1 and later */ +static const char * +Fake_glXGetClientString( Display *dpy, int name ) +{ + static char version[1000]; + _mesa_sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION, + CLIENT_MINOR_VERSION, MESA_GLX_VERSION); + + (void) dpy; + + switch (name) { + case GLX_EXTENSIONS: + return get_extensions(); + case GLX_VENDOR: + return VENDOR; + case GLX_VERSION: + return version; + default: + return NULL; + } +} + + + +/* + * GLX 1.3 and later + */ + + +static int +Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config, + int attribute, int *value ) +{ + XMesaVisual v = (XMesaVisual) config; + (void) dpy; + (void) config; + + if (!dpy || !config || !value) + return -1; + + return get_config(v, attribute, value, GL_TRUE); +} + + +static GLXFBConfig * +Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements ) +{ + XVisualInfo *visuals, visTemplate; + const long visMask = VisualScreenMask; + int i; + + /* Get list of all X visuals */ + visTemplate.screen = screen; + visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements); + if (*nelements > 0) { + XMesaVisual *results; + results = (XMesaVisual *) _mesa_malloc(*nelements * sizeof(XMesaVisual)); + if (!results) { + *nelements = 0; + return NULL; + } + for (i = 0; i < *nelements; i++) { + results[i] = create_glx_visual(dpy, visuals + i); + } + return (GLXFBConfig *) results; + } + return NULL; +} + + +static GLXFBConfig * +Fake_glXChooseFBConfig( Display *dpy, int screen, + const int *attribList, int *nitems ) +{ + XMesaVisual xmvis; + + if (!attribList || !attribList[0]) { + /* return list of all configs (per GLX_SGIX_fbconfig spec) */ + return Fake_glXGetFBConfigs(dpy, screen, nitems); + } + + xmvis = choose_visual(dpy, screen, attribList, GL_TRUE); + if (xmvis) { + GLXFBConfig *config = (GLXFBConfig *) _mesa_malloc(sizeof(XMesaVisual)); + if (!config) { + *nitems = 0; + return NULL; + } + *nitems = 1; + config[0] = (GLXFBConfig) xmvis; + return (GLXFBConfig *) config; + } + else { + *nitems = 0; + return NULL; + } +} + + +static XVisualInfo * +Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config ) +{ + if (dpy && config) { + XMesaVisual xmvis = (XMesaVisual) config; +#if 0 + return xmvis->vishandle; +#else + /* create a new vishandle - the cached one may be stale */ + xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo)); + if (xmvis->vishandle) { + _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo)); + } + return xmvis->vishandle; +#endif + } + else { + return NULL; + } +} + + +static GLXWindow +Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win, + const int *attribList ) +{ + XMesaVisual xmvis = (XMesaVisual) config; + XMesaBuffer xmbuf; + if (!xmvis) + return 0; + + xmbuf = XMesaCreateWindowBuffer(xmvis, win); + if (!xmbuf) + return 0; + +#ifdef FX + /* XXX this will segfault if actually called */ + FXcreateContext(xmvis, win, NULL, xmbuf); +#endif + + (void) dpy; + (void) attribList; /* Ignored in GLX 1.3 */ + + return win; /* A hack for now */ +} + + +static void +Fake_glXDestroyWindow( Display *dpy, GLXWindow window ) +{ + XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window); + if (b) + XMesaDestroyBuffer(b); + /* don't destroy X window */ +} + + +/* XXX untested */ +static GLXPixmap +Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap, + const int *attribList ) +{ + XMesaVisual v = (XMesaVisual) config; + XMesaBuffer b; + const int *attr; + int target = 0, format = 0, mipmap = 0; + int value; + + if (!dpy || !config || !pixmap) + return 0; + + for (attr = attribList; *attr; attr++) { + switch (*attr) { + case GLX_TEXTURE_FORMAT_EXT: + attr++; + switch (*attr) { + case GLX_TEXTURE_FORMAT_NONE_EXT: + case GLX_TEXTURE_FORMAT_RGB_EXT: + case GLX_TEXTURE_FORMAT_RGBA_EXT: + format = *attr; + break; + default: + /* error */ + return 0; + } + break; + case GLX_TEXTURE_TARGET_EXT: + attr++; + switch (*attr) { + case GLX_TEXTURE_1D_EXT: + case GLX_TEXTURE_2D_EXT: + case GLX_TEXTURE_RECTANGLE_EXT: + target = *attr; + break; + default: + /* error */ + return 0; + } + break; + case GLX_MIPMAP_TEXTURE_EXT: + attr++; + if (*attr) + mipmap = 1; + break; + default: + /* error */ + return 0; + } + } + + if (format == GLX_TEXTURE_FORMAT_RGB_EXT) { + if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT, + &value, GL_TRUE) != Success + || !value) { + return 0; /* error! */ + } + } + else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) { + if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT, + &value, GL_TRUE) != Success + || !value) { + return 0; /* error! */ + } + } + if (mipmap) { + if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT, + &value, GL_TRUE) != Success + || !value) { + return 0; /* error! */ + } + } + if (target == GLX_TEXTURE_1D_EXT) { + if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT, + &value, GL_TRUE) != Success + || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) { + return 0; /* error! */ + } + } + else if (target == GLX_TEXTURE_2D_EXT) { + if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT, + &value, GL_TRUE) != Success + || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) { + return 0; /* error! */ + } + } + if (target == GLX_TEXTURE_RECTANGLE_EXT) { + if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT, + &value, GL_TRUE) != Success + || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) { + return 0; /* error! */ + } + } + + if (format || target || mipmap) { + /* texture from pixmap */ + b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap); + } + else { + b = XMesaCreatePixmapBuffer( v, pixmap, 0 ); + } + if (!b) { + return 0; + } + + return pixmap; +} + + +static void +Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap ) +{ + XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap); + if (b) + XMesaDestroyBuffer(b); + /* don't destroy X pixmap */ +} + + +static GLXPbuffer +Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config, + const int *attribList ) +{ + XMesaVisual xmvis = (XMesaVisual) config; + XMesaBuffer xmbuf; + const int *attrib; + int width = 0, height = 0; + GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE; + + (void) dpy; + + for (attrib = attribList; *attrib; attrib++) { + switch (*attrib) { + case GLX_PBUFFER_WIDTH: + attrib++; + width = *attrib; + break; + case GLX_PBUFFER_HEIGHT: + attrib++; + height = *attrib; + break; + case GLX_PRESERVED_CONTENTS: + attrib++; + preserveContents = *attrib; /* ignored */ + break; + case GLX_LARGEST_PBUFFER: + attrib++; + useLargest = *attrib; /* ignored */ + break; + default: + return 0; + } + } + + /* not used at this time */ + (void) useLargest; + (void) preserveContents; + + if (width == 0 || height == 0) + return 0; + + xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height); + /* A GLXPbuffer handle must be an X Drawable because that's what + * glXMakeCurrent takes. + */ + if (xmbuf) + return (GLXPbuffer) xmbuf->drawable; + else + return 0; +} + + +static void +Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf ) +{ + XMesaBuffer b = XMesaFindBuffer(dpy, pbuf); + if (b) { + XMesaDestroyBuffer(b); + } +} + + +static void +Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute, + unsigned int *value ) +{ + XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw); + if (!xmbuf) + return; + + switch (attribute) { + case GLX_WIDTH: + *value = xmesa_buffer_width(xmbuf); + break; + case GLX_HEIGHT: + *value = xmesa_buffer_width(xmbuf); + break; + case GLX_PRESERVED_CONTENTS: + *value = True; + break; + case GLX_LARGEST_PBUFFER: + *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf); + break; + case GLX_FBCONFIG_ID: + *value = xmbuf->xm_visual->visinfo->visualid; + return; +#ifdef GLX_EXT_texture_from_pixmap + case GLX_TEXTURE_FORMAT_EXT: + *value = xmbuf->TextureFormat; + break; + case GLX_TEXTURE_TARGET_EXT: + *value = xmbuf->TextureTarget; + break; + case GLX_MIPMAP_TEXTURE_EXT: + *value = xmbuf->TextureMipmap; + break; +#endif + + default: + return; /* raise BadValue error */ + } +} + + +static GLXContext +Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config, + int renderType, GLXContext shareList, Bool direct ) +{ + struct fake_glx_context *glxCtx; + struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList; + XMesaVisual xmvis = (XMesaVisual) config; + + if (!dpy || !config || + (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE)) + return 0; + + glxCtx = CALLOC_STRUCT(fake_glx_context); + if (!glxCtx) + return 0; + + /* deallocate unused windows/buffers */ + XMesaGarbageCollect(); + + glxCtx->xmesaContext = XMesaCreateContext(xmvis, + shareCtx ? shareCtx->xmesaContext : NULL); + if (!glxCtx->xmesaContext) { + _mesa_free(glxCtx); + return NULL; + } + + glxCtx->glxContext.isDirect = GL_FALSE; + glxCtx->glxContext.currentDpy = dpy; + glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */ + + assert((void *) glxCtx == (void *) &(glxCtx->glxContext)); + + return (GLXContext) glxCtx; +} + + +static int +Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value ) +{ + struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx; + XMesaContext xmctx = glxCtx->xmesaContext; + + (void) dpy; + (void) ctx; + + switch (attribute) { + case GLX_FBCONFIG_ID: + *value = xmctx->xm_visual->visinfo->visualid; + break; + case GLX_RENDER_TYPE: + if (xmctx->xm_visual->mesa_visual.rgbMode) + *value = GLX_RGBA_BIT; + else + *value = GLX_COLOR_INDEX_BIT; + break; + case GLX_SCREEN: + *value = 0; + return Success; + default: + return GLX_BAD_ATTRIBUTE; + } + return 0; +} + + +static void +Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask ) +{ + XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); + if (xmbuf) + xmbuf->selectedEvents = mask; +} + + +static void +Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable, + unsigned long *mask ) +{ + XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); + if (xmbuf) + *mask = xmbuf->selectedEvents; + else + *mask = 0; +} + + + +/*** GLX_SGI_swap_control ***/ + +static int +Fake_glXSwapIntervalSGI(int interval) +{ + (void) interval; + return 0; +} + + + +/*** GLX_SGI_video_sync ***/ + +static unsigned int FrameCounter = 0; + +static int +Fake_glXGetVideoSyncSGI(unsigned int *count) +{ + /* this is a bogus implementation */ + *count = FrameCounter++; + return 0; +} + +static int +Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) +{ + if (divisor <= 0 || remainder < 0) + return GLX_BAD_VALUE; + /* this is a bogus implementation */ + FrameCounter++; + while (FrameCounter % divisor != remainder) + FrameCounter++; + *count = FrameCounter; + return 0; +} + + + +/*** GLX_SGI_make_current_read ***/ + +static Bool +Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx) +{ + return Fake_glXMakeContextCurrent( dpy, draw, read, ctx ); +} + +/* not used +static GLXDrawable +Fake_glXGetCurrentReadDrawableSGI(void) +{ + return 0; +} +*/ + + +/*** GLX_SGIX_video_source ***/ +#if defined(_VL_H) + +static GLXVideoSourceSGIX +Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode) +{ + (void) dpy; + (void) screen; + (void) server; + (void) path; + (void) nodeClass; + (void) drainNode; + return 0; +} + +static void +Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src) +{ + (void) dpy; + (void) src; +} + +#endif + + +/*** GLX_EXT_import_context ***/ + +static void +Fake_glXFreeContextEXT(Display *dpy, GLXContext context) +{ + (void) dpy; + (void) context; +} + +static GLXContextID +Fake_glXGetContextIDEXT(const GLXContext context) +{ + (void) context; + return 0; +} + +static GLXContext +Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID) +{ + (void) dpy; + (void) contextID; + return 0; +} + +static int +Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value) +{ + (void) dpy; + (void) context; + (void) attribute; + (void) value; + return 0; +} + + + +/*** GLX_SGIX_fbconfig ***/ + +static int +Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value) +{ + return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value); +} + +static GLXFBConfigSGIX * +Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements) +{ + return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements); +} + + +static GLXPixmap +Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap) +{ + XMesaVisual xmvis = (XMesaVisual) config; + XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0); + return xmbuf->drawable; /* need to return an X ID */ +} + + +static GLXContext +Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct) +{ + XMesaVisual xmvis = (XMesaVisual) config; + struct fake_glx_context *glxCtx; + struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list; + + glxCtx = CALLOC_STRUCT(fake_glx_context); + if (!glxCtx) + return 0; + + /* deallocate unused windows/buffers */ + XMesaGarbageCollect(); + + glxCtx->xmesaContext = XMesaCreateContext(xmvis, + shareCtx ? shareCtx->xmesaContext : NULL); + if (!glxCtx->xmesaContext) { + _mesa_free(glxCtx); + return NULL; + } + + glxCtx->glxContext.isDirect = GL_FALSE; + glxCtx->glxContext.currentDpy = dpy; + glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */ + + assert((void *) glxCtx == (void *) &(glxCtx->glxContext)); + + return (GLXContext) glxCtx; +} + + +static XVisualInfo * +Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config) +{ + return Fake_glXGetVisualFromFBConfig(dpy, config); +} + + +static GLXFBConfigSGIX +Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis) +{ + XMesaVisual xmvis = find_glx_visual(dpy, vis); + if (!xmvis) { + /* This visual wasn't found with glXChooseVisual() */ + xmvis = create_glx_visual(dpy, vis); + } + + return (GLXFBConfigSGIX) xmvis; +} + + + +/*** GLX_SGIX_pbuffer ***/ + +static GLXPbufferSGIX +Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config, + unsigned int width, unsigned int height, + int *attribList) +{ + XMesaVisual xmvis = (XMesaVisual) config; + XMesaBuffer xmbuf; + const int *attrib; + GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE; + + (void) dpy; + + for (attrib = attribList; attrib && *attrib; attrib++) { + switch (*attrib) { + case GLX_PRESERVED_CONTENTS_SGIX: + attrib++; + preserveContents = *attrib; /* ignored */ + break; + case GLX_LARGEST_PBUFFER_SGIX: + attrib++; + useLargest = *attrib; /* ignored */ + break; + default: + return 0; + } + } + + /* not used at this time */ + (void) useLargest; + (void) preserveContents; + + xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height); + /* A GLXPbuffer handle must be an X Drawable because that's what + * glXMakeCurrent takes. + */ + return (GLXPbuffer) xmbuf->drawable; +} + + +static void +Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf) +{ + XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf); + if (xmbuf) { + XMesaDestroyBuffer(xmbuf); + } +} + + +static int +Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value) +{ + const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf); + + if (!xmbuf) { + /* Generate GLXBadPbufferSGIX for bad pbuffer */ + return 0; + } + + switch (attribute) { + case GLX_PRESERVED_CONTENTS_SGIX: + *value = True; + break; + case GLX_LARGEST_PBUFFER_SGIX: + *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf); + break; + case GLX_WIDTH_SGIX: + *value = xmesa_buffer_width(xmbuf); + break; + case GLX_HEIGHT_SGIX: + *value = xmesa_buffer_height(xmbuf); + break; + case GLX_EVENT_MASK_SGIX: + *value = 0; /* XXX might be wrong */ + break; + default: + *value = 0; + } + return 0; +} + + +static void +Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask) +{ + XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); + if (xmbuf) { + /* Note: we'll never generate clobber events */ + xmbuf->selectedEvents = mask; + } +} + + +static void +Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask) +{ + XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); + if (xmbuf) { + *mask = xmbuf->selectedEvents; + } + else { + *mask = 0; + } +} + + + +/*** GLX_SGI_cushion ***/ + +static void +Fake_glXCushionSGI(Display *dpy, Window win, float cushion) +{ + (void) dpy; + (void) win; + (void) cushion; +} + + + +/*** GLX_SGIX_video_resize ***/ + +static int +Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window) +{ + (void) dpy; + (void) screen; + (void) channel; + (void) window; + return 0; +} + +static int +Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h) +{ + (void) dpy; + (void) screen; + (void) channel; + (void) x; + (void) y; + (void) w; + (void) h; + return 0; +} + +static int +Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h) +{ + (void) dpy; + (void) screen; + (void) channel; + (void) x; + (void) y; + (void) w; + (void) h; + return 0; +} + +static int +Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh) +{ + (void) dpy; + (void) screen; + (void) channel; + (void) dx; + (void) dy; + (void) dw; + (void) dh; + return 0; +} + +static int +Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype) +{ + (void) dpy; + (void) screen; + (void) channel; + (void) synctype; + return 0; +} + + + +/*** GLX_SGIX_dmbuffer **/ + +#if defined(_DM_BUFFER_H_) +static Bool +Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer) +{ + (void) dpy; + (void) pbuffer; + (void) params; + (void) dmbuffer; + return False; +} +#endif + + +/*** GLX_SGIX_swap_group ***/ + +static void +Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member) +{ + (void) dpy; + (void) drawable; + (void) member; +} + + + +/*** GLX_SGIX_swap_barrier ***/ + +static void +Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier) +{ + (void) dpy; + (void) drawable; + (void) barrier; +} + +static Bool +Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max) +{ + (void) dpy; + (void) screen; + (void) max; + return False; +} + + + +/*** GLX_SUN_get_transparent_index ***/ + +static Status +Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent) +{ + (void) dpy; + (void) overlay; + (void) underlay; + (void) pTransparent; + return 0; +} + + + +/*** GLX_MESA_release_buffers ***/ + +/* + * Release the depth, stencil, accum buffers attached to a GLXDrawable + * (a window or pixmap) prior to destroying the GLXDrawable. + */ +static Bool +Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d ) +{ + XMesaBuffer b = XMesaFindBuffer(dpy, d); + if (b) { + XMesaDestroyBuffer(b); + return True; + } + return False; +} + + + +/*** GLX_MESA_set_3dfx_mode ***/ + +static Bool +Fake_glXSet3DfxModeMESA( int mode ) +{ + return XMesaSetFXmode( mode ); +} + + + +/*** GLX_NV_vertex_array range ***/ +static void * +Fake_glXAllocateMemoryNV( GLsizei size, + GLfloat readFrequency, + GLfloat writeFrequency, + GLfloat priority ) +{ + (void) size; + (void) readFrequency; + (void) writeFrequency; + (void) priority; + return NULL; +} + + +static void +Fake_glXFreeMemoryNV( GLvoid *pointer ) +{ + (void) pointer; +} + + +/*** GLX_MESA_agp_offset ***/ + +static GLuint +Fake_glXGetAGPOffsetMESA( const GLvoid *pointer ) +{ + (void) pointer; + return ~0; +} + + +/*** GLX_EXT_texture_from_pixmap ***/ + +static void +Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer, + const int *attrib_list) +{ + XMesaBuffer b = XMesaFindBuffer(dpy, drawable); + if (b) + XMesaBindTexImage(dpy, b, buffer, attrib_list); +} + +static void +Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer) +{ + XMesaBuffer b = XMesaFindBuffer(dpy, drawable); + if (b) + XMesaReleaseTexImage(dpy, b, buffer); +} + + +/* silence warning */ +extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void); + + +/** + * Create a new GLX API dispatch table with its function pointers + * initialized to point to Mesa's "fake" GLX API functions. + * Note: there's a similar function (_real_GetGLXDispatchTable) that + * returns a new dispatch table with all pointers initalized to point + * to "real" GLX functions (which understand GLX wire protocol, etc). + */ +struct _glxapi_table * +_mesa_GetGLXDispatchTable(void) +{ + static struct _glxapi_table glx; + + /* be sure our dispatch table size <= libGL's table */ + { + GLuint size = sizeof(struct _glxapi_table) / sizeof(void *); + (void) size; + assert(_glxapi_get_dispatch_table_size() >= size); + } + + /* initialize the whole table to no-ops */ + _glxapi_set_no_op_table(&glx); + + /* now initialize the table with the functions I implement */ + glx.ChooseVisual = Fake_glXChooseVisual; + glx.CopyContext = Fake_glXCopyContext; + glx.CreateContext = Fake_glXCreateContext; + glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap; + glx.DestroyContext = Fake_glXDestroyContext; + glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap; + glx.GetConfig = Fake_glXGetConfig; + /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/ + /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/ + glx.IsDirect = Fake_glXIsDirect; + glx.MakeCurrent = Fake_glXMakeCurrent; + glx.QueryExtension = Fake_glXQueryExtension; + glx.QueryVersion = Fake_glXQueryVersion; + glx.SwapBuffers = Fake_glXSwapBuffers; + glx.UseXFont = Fake_glXUseXFont; + glx.WaitGL = Fake_glXWaitGL; + glx.WaitX = Fake_glXWaitX; + + /*** GLX_VERSION_1_1 ***/ + glx.GetClientString = Fake_glXGetClientString; + glx.QueryExtensionsString = Fake_glXQueryExtensionsString; + glx.QueryServerString = Fake_glXQueryServerString; + + /*** GLX_VERSION_1_2 ***/ + /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/ + + /*** GLX_VERSION_1_3 ***/ + glx.ChooseFBConfig = Fake_glXChooseFBConfig; + glx.CreateNewContext = Fake_glXCreateNewContext; + glx.CreatePbuffer = Fake_glXCreatePbuffer; + glx.CreatePixmap = Fake_glXCreatePixmap; + glx.CreateWindow = Fake_glXCreateWindow; + glx.DestroyPbuffer = Fake_glXDestroyPbuffer; + glx.DestroyPixmap = Fake_glXDestroyPixmap; + glx.DestroyWindow = Fake_glXDestroyWindow; + /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/ + glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib; + glx.GetFBConfigs = Fake_glXGetFBConfigs; + glx.GetSelectedEvent = Fake_glXGetSelectedEvent; + glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig; + glx.MakeContextCurrent = Fake_glXMakeContextCurrent; + glx.QueryContext = Fake_glXQueryContext; + glx.QueryDrawable = Fake_glXQueryDrawable; + glx.SelectEvent = Fake_glXSelectEvent; + + /*** GLX_SGI_swap_control ***/ + glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI; + + /*** GLX_SGI_video_sync ***/ + glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI; + glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI; + + /*** GLX_SGI_make_current_read ***/ + glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI; + /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/ + +/*** GLX_SGIX_video_source ***/ +#if defined(_VL_H) + glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX; + glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX; +#endif + + /*** GLX_EXT_import_context ***/ + glx.FreeContextEXT = Fake_glXFreeContextEXT; + glx.GetContextIDEXT = Fake_glXGetContextIDEXT; + /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/ + glx.ImportContextEXT = Fake_glXImportContextEXT; + glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT; + + /*** GLX_SGIX_fbconfig ***/ + glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX; + glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX; + glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX; + glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX; + glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX; + glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX; + + /*** GLX_SGIX_pbuffer ***/ + glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX; + glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX; + glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX; + glx.SelectEventSGIX = Fake_glXSelectEventSGIX; + glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX; + + /*** GLX_SGI_cushion ***/ + glx.CushionSGI = Fake_glXCushionSGI; + + /*** GLX_SGIX_video_resize ***/ + glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX; + glx.ChannelRectSGIX = Fake_glXChannelRectSGIX; + glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX; + glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX; + glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX; + + /*** GLX_SGIX_dmbuffer **/ +#if defined(_DM_BUFFER_H_) + glx.AssociateDMPbufferSGIX = NULL; +#endif + + /*** GLX_SGIX_swap_group ***/ + glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX; + + /*** GLX_SGIX_swap_barrier ***/ + glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX; + glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX; + + /*** GLX_SUN_get_transparent_index ***/ + glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN; + + /*** GLX_MESA_copy_sub_buffer ***/ + glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA; + + /*** GLX_MESA_release_buffers ***/ + glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA; + + /*** GLX_MESA_pixmap_colormap ***/ + glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA; + + /*** GLX_MESA_set_3dfx_mode ***/ + glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA; + + /*** GLX_NV_vertex_array_range ***/ + glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV; + glx.FreeMemoryNV = Fake_glXFreeMemoryNV; + + /*** GLX_MESA_agp_offset ***/ + glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA; + + /*** GLX_EXT_texture_from_pixmap ***/ + glx.BindTexImageEXT = Fake_glXBindTexImageEXT; + glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT; + + return &glx; +} |