/* * Mesa 3-D graphics library * * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * Copyright (C) 2009 VMware, Inc. 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 * THE AUTHORS OR COPYRIGHT HOLDERS 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. */ /** * "Fake" GLX API implemented in terms of the XMesa*() functions. */ #define GLX_GLXEXT_PROTOTYPES #include "GL/glx.h" #include #include #include #include #include "xm_api.h" /* An "Atrribs/Attribs" typo was fixed in glxproto.h in Nov 2014. * This is in case we don't have the updated header. */ #if !defined(X_GLXCreateContextAttribsARB) && \ defined(X_GLXCreateContextAtrribsARB) #define X_GLXCreateContextAttribsARB X_GLXCreateContextAtrribsARB #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 /* Who implemented this GLX? */ #define VENDOR "Brian Paul" #define EXTENSIONS \ "GLX_MESA_copy_sub_buffer " \ "GLX_MESA_pixmap_colormap " \ "GLX_MESA_release_buffers " \ "GLX_ARB_create_context " \ "GLX_ARB_create_context_profile " \ "GLX_ARB_get_proc_address " \ "GLX_EXT_create_context_es_profile " \ "GLX_EXT_create_context_es2_profile " \ "GLX_EXT_texture_from_pixmap " \ "GLX_EXT_visual_info " \ "GLX_EXT_visual_rating " \ /*"GLX_SGI_video_sync "*/ \ "GLX_SGIX_fbconfig " \ "GLX_SGIX_pbuffer " #define DEFAULT_DIRECT GL_TRUE /** XXX this could be based on gallium's max texture size */ #define PBUFFER_MAX_SIZE 16384 /** * The GLXContext typedef is defined as a pointer to this structure. */ struct __GLXcontextRec { Display *currentDpy; GLboolean isDirect; GLXDrawable currentDrawable; GLXDrawable currentReadable; XID xid; XMesaContext xmesaContext; }; static pipe_tsd ContextTSD; /** Set current context for calling thread */ static void SetCurrentContext(GLXContext c) { pipe_tsd_set(&ContextTSD, c); } /** Get current context for calling thread */ static GLXContext GetCurrentContext(void) { return pipe_tsd_get(&ContextTSD); } /**********************************************************************/ /*** GLX Visual Code ***/ /**********************************************************************/ #define DONT_CARE -1 static XMesaVisual *VisualTable = NULL; static int NumVisuals = 0; /* 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; } } /* * 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 = 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 (getenv("MESA_GLX_VISUAL_HACK")) comparePointers = GL_TRUE; else comparePointers = GL_FALSE; /* Force the visual to have an alpha channel */ if (rgbFlag && getenv("MESA_GLX_FORCE_ALPHA")) alphaFlag = GL_TRUE; /* First check if a matching visual is already in the list */ for (i=0; idisplay == 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 = realloc(VisualTable, 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 = getenv("MESA_GLX_DEPTH_BITS"); if (zEnv) zBits = atoi(zEnv); else zBits = 24; return zBits; } static GLint default_alpha_bits(void) { int aBits; const char *aEnv = getenv("MESA_GLX_ALPHA_BITS"); if (aEnv) aBits = 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 ) { GLint zBits = default_depth_bits(); GLint accBits = default_accum_bits(); GLboolean alphaFlag = default_alpha_bits() > 0; if (is_usable_visual( visinfo )) { /* 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, 8, /* 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;idisplay==dpy && VisualTable[i]->visinfo->visualid == vinfo->visualid) { return VisualTable[i]; } } /* if that fails, try to match pointers */ for (i=0;idisplay==dpy && VisualTable[i]->vishandle==vinfo) { return VisualTable[i]; } } return NULL; } /** * 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 { free((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 (!getenv( varname )) { return NULL; } strncpy( value, getenv(varname), 100 ); value[99] = 0; sscanf( value, "%s %d", type, &depth ); if (strcmp(type,"TrueColor")==0) xclass = TrueColor; else if (strcmp(type,"DirectColor")==0) xclass = DirectColor; else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor; else if (strcmp(type,"StaticColor")==0) xclass = StaticColor; else if (strcmp(type,"GrayScale")==0) xclass = GrayScale; else if (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 flag and minimum depth. * Input: dpy, * screen - X display and screen number * 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, int min_depth, int preferred_class ) { XVisualInfo *vis; int xclass, visclass = 0; int depth; /* 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) { /* 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) { /* 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; } } } } /* didn't find a visual */ return NULL; } /**********************************************************************/ /*** 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) { xmesa_destroy_buffers_on_display(dpy); destroy_visuals_on_display(dpy); xmesa_close_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); (void) c; ext->name = strdup(extName); ext->close_display = close_display_callback; } } /** * Fake an error. */ static int generate_error(Display *dpy, unsigned char error_code, XID resourceid, unsigned char minor_code, Bool core) { XErrorHandler handler; int major_opcode; int first_event; int first_error; XEvent event; handler = XSetErrorHandler(NULL); XSetErrorHandler(handler); if (!handler) { return 0; } if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_opcode, &first_event, &first_error)) { major_opcode = 0; first_event = 0; first_error = 0; } if (!core) { error_code += first_error; } memset(&event, 0, sizeof event); event.xerror.type = X_Error; event.xerror.display = dpy; event.xerror.resourceid = resourceid; event.xerror.serial = NextRequest(dpy) - 1; event.xerror.error_code = error_code; event.xerror.request_code = major_opcode; event.xerror.minor_code = minor_code; return handler(dpy, &event.xerror); } /**********************************************************************/ /*** 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_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; GLint caveat = DONT_CARE; XMesaVisual xmvis = NULL; int desiredVisualID = -1; int numAux = 0; xmesa_init( dpy ); parselist = list; while (*parselist) { if (fbConfig && parselist[1] == GLX_DONT_CARE && parselist[0] != GLX_LEVEL) { /* For glXChooseFBConfig(), skip attributes whose value is * GLX_DONT_CARE, unless it's GLX_LEVEL (which can legitimately be * a negative value). * * From page 17 (23 of the pdf) of the GLX 1.4 spec: * GLX DONT CARE may be specified for all attributes except GLX LEVEL. */ parselist += 2; continue; } switch (*parselist) { case GLX_USE_GL: if (fbConfig) { /* invalid token */ return NULL; } else { /* skip */ parselist++; } break; case GLX_BUFFER_SIZE: parselist++; 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++; parselist++; break; case GLX_TRANSPARENT_INDEX_VALUE_EXT: parselist++; 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: case GLX_SAMPLES_ARB: parselist++; if (*parselist++ != 0) { /* ms not supported */ return NULL; } break; /* * 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: case GLX_VISUAL_ID: if (!fbConfig) return NULL; parselist++; desiredVisualID = *parselist++; break; case GLX_X_RENDERABLE: case GLX_MAX_PBUFFER_WIDTH: case GLX_MAX_PBUFFER_HEIGHT: case GLX_MAX_PBUFFER_PIXELS: if (!fbConfig) return NULL; /* invalid config option */ parselist += 2; /* ignore the parameter */ 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; rgb_flag = GL_TRUE; } } else if (level==0) { /* normal color planes */ /* 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, min_rgb, visual_type ); } else { _mesa_warning(NULL, "overlay not supported"); return NULL; } 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 = 8; 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; } PUBLIC XVisualInfo * 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) { /* create a new vishandle - the cached one may be stale */ xmvis->vishandle = malloc(sizeof(XVisualInfo)); if (xmvis->vishandle) { memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo)); } return xmvis->vishandle; } else return NULL; } /** * Helper function used by other glXCreateContext functions. */ static GLXContext create_context(Display *dpy, XMesaVisual xmvis, XMesaContext shareCtx, Bool direct, unsigned major, unsigned minor, unsigned profileMask, unsigned contextFlags) { GLXContext glxCtx; if (!dpy || !xmvis) return 0; glxCtx = CALLOC_STRUCT(__GLXcontextRec); if (!glxCtx) return 0; /* deallocate unused windows/buffers */ #if 0 XMesaGarbageCollect(); #endif glxCtx->xmesaContext = XMesaCreateContext(xmvis, shareCtx, major, minor, profileMask, contextFlags); if (!glxCtx->xmesaContext) { free(glxCtx); return NULL; } glxCtx->isDirect = DEFAULT_DIRECT; glxCtx->currentDpy = dpy; glxCtx->xid = (XID) glxCtx; /* self pointer */ return glxCtx; } PUBLIC GLXContext glXCreateContext( Display *dpy, XVisualInfo *visinfo, GLXContext shareCtx, Bool direct ) { XMesaVisual xmvis; 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 */ return NULL; } } return create_context(dpy, xmvis, shareCtx ? shareCtx->xmesaContext : NULL, direct, 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0); } /* 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 */ PUBLIC Bool glXMakeContextCurrent( Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx ) { GLXContext glxCtx = 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; } } /* 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; } } 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)) { ctx->currentDpy = dpy; ctx->currentDrawable = draw; ctx->currentReadable = read; SetCurrentContext(ctx); return True; } else { return False; } } else if (!ctx && !draw && !read) { /* release current context w/out assigning new one. */ XMesaMakeCurrent2( NULL, NULL, NULL ); MakeCurrent_PrevContext = 0; MakeCurrent_PrevDrawable = 0; MakeCurrent_PrevReadable = 0; MakeCurrent_PrevDrawBuffer = 0; MakeCurrent_PrevReadBuffer = 0; SetCurrentContext(NULL); return True; } else { /* The args must either all be non-zero or all zero. * This is an error. */ return False; } } PUBLIC Bool glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx ) { return glXMakeContextCurrent( dpy, drawable, drawable, ctx ); } PUBLIC GLXContext glXGetCurrentContext(void) { return GetCurrentContext(); } PUBLIC Display * glXGetCurrentDisplay(void) { GLXContext glxCtx = glXGetCurrentContext(); return glxCtx ? glxCtx->currentDpy : NULL; } PUBLIC Display * glXGetCurrentDisplayEXT(void) { return glXGetCurrentDisplay(); } PUBLIC GLXDrawable glXGetCurrentDrawable(void) { GLXContext gc = glXGetCurrentContext(); return gc ? gc->currentDrawable : 0; } PUBLIC GLXDrawable glXGetCurrentReadDrawable(void) { GLXContext gc = glXGetCurrentContext(); return gc ? gc->currentReadable : 0; } PUBLIC GLXDrawable glXGetCurrentReadDrawableSGI(void) { return glXGetCurrentReadDrawable(); } PUBLIC GLXPixmap 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->ws.drawable; } /*** GLX_MESA_pixmap_colormap ***/ PUBLIC GLXPixmap 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->ws.drawable; } PUBLIC void glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap ) { XMesaBuffer b = XMesaFindBuffer(dpy, pixmap); if (b) { XMesaDestroyBuffer(b); } else if (getenv("MESA_DEBUG")) { _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n"); } } PUBLIC void glXCopyContext( Display *dpy, GLXContext src, GLXContext dst, unsigned long mask ) { XMesaContext xm_src = src->xmesaContext; XMesaContext xm_dst = dst->xmesaContext; (void) dpy; if (MakeCurrent_PrevContext == src) { glFlush(); } XMesaCopyContext(xm_src, xm_dst, mask); } PUBLIC Bool glXQueryExtension( Display *dpy, int *errorBase, int *eventBase ) { int op, ev, err; /* Mesa's GLX isn't really an X extension but we try to act like one. */ if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err)) ev = err = 0; if (errorBase) *errorBase = err; if (eventBase) *eventBase = ev; return True; /* we're faking GLX so always return success */ } PUBLIC void glXDestroyContext( Display *dpy, GLXContext ctx ) { if (ctx) { GLXContext glxCtx = ctx; (void) dpy; MakeCurrent_PrevContext = 0; MakeCurrent_PrevDrawable = 0; MakeCurrent_PrevReadable = 0; MakeCurrent_PrevDrawBuffer = 0; MakeCurrent_PrevReadBuffer = 0; XMesaDestroyContext( glxCtx->xmesaContext ); XMesaGarbageCollect(); free(glxCtx); } } PUBLIC Bool glXIsDirect( Display *dpy, GLXContext ctx ) { return ctx ? ctx->isDirect : False; } PUBLIC void 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 (getenv("MESA_DEBUG")) { _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n", (int) drawable); } } /*** GLX_MESA_copy_sub_buffer ***/ PUBLIC void 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 (getenv("MESA_DEBUG")) { _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n"); } } PUBLIC Bool 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: /* normal planes */ *value = GLX_NONE_EXT; return 0; case GLX_TRANSPARENT_INDEX_VALUE_EXT: /* 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 should be same as ctx->Const.MaxRenderbufferSize */ *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; } PUBLIC int 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; } PUBLIC void glXWaitGL( void ) { XMesaContext xmesa = XMesaGetCurrentContext(); XMesaFlush( xmesa ); } PUBLIC void glXWaitX( void ) { XMesaContext xmesa = XMesaGetCurrentContext(); XMesaFlush( xmesa ); } static const char * get_extensions( void ) { return EXTENSIONS; } /* GLX 1.1 and later */ PUBLIC const char * glXQueryExtensionsString( Display *dpy, int screen ) { (void) dpy; (void) screen; return get_extensions(); } /* GLX 1.1 and later */ PUBLIC const char * glXQueryServerString( Display *dpy, int screen, int name ) { static char version[1000]; sprintf(version, "%d.%d %s", SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, xmesa_get_name()); (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 */ PUBLIC const char * glXGetClientString( Display *dpy, int name ) { static char version[1000]; sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION, CLIENT_MINOR_VERSION, xmesa_get_name()); (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 */ PUBLIC int 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); } PUBLIC GLXFBConfig * 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 = malloc(*nelements * sizeof(XMesaVisual)); if (!results) { *nelements = 0; return NULL; } for (i = 0; i < *nelements; i++) { results[i] = create_glx_visual(dpy, visuals + i); if (!results[i]) { *nelements = i; break; } } return (GLXFBConfig *) results; } return NULL; } PUBLIC GLXFBConfig * glXChooseFBConfig(Display *dpy, int screen, const int *attribList, int *nitems) { XMesaVisual xmvis; /* register ourselves as an extension on this display */ register_with_display(dpy); if (!attribList || !attribList[0]) { /* return list of all configs (per GLX_SGIX_fbconfig spec) */ return glXGetFBConfigs(dpy, screen, nitems); } xmvis = choose_visual(dpy, screen, attribList, GL_TRUE); if (xmvis) { GLXFBConfig *config = malloc(sizeof(XMesaVisual)); if (!config) { *nitems = 0; return NULL; } *nitems = 1; config[0] = (GLXFBConfig) xmvis; return (GLXFBConfig *) config; } else { *nitems = 0; return NULL; } } PUBLIC XVisualInfo * 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 = malloc(sizeof(XVisualInfo)); if (xmvis->vishandle) { memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo)); } return xmvis->vishandle; #endif } else { return NULL; } } PUBLIC GLXWindow 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; (void) dpy; (void) attribList; /* Ignored in GLX 1.3 */ return win; /* A hack for now */ } PUBLIC void glXDestroyWindow( Display *dpy, GLXWindow window ) { XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable) window); if (b) XMesaDestroyBuffer(b); /* don't destroy X window */ } /* XXX untested */ PUBLIC GLXPixmap 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; 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; } PUBLIC void glXDestroyPixmap( Display *dpy, GLXPixmap pixmap ) { XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable)pixmap); if (b) XMesaDestroyBuffer(b); /* don't destroy X pixmap */ } PUBLIC GLXPbuffer 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; break; case GLX_LARGEST_PBUFFER: attrib++; useLargest = *attrib; break; default: return 0; } } if (width == 0 || height == 0) return 0; if (width > PBUFFER_MAX_SIZE || height > PBUFFER_MAX_SIZE) { /* If allocation would have failed and GLX_LARGEST_PBUFFER is set, * allocate the largest possible buffer. */ if (useLargest) { width = PBUFFER_MAX_SIZE; height = PBUFFER_MAX_SIZE; } } xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height); /* A GLXPbuffer handle must be an X Drawable because that's what * glXMakeCurrent takes. */ if (xmbuf) { xmbuf->largestPbuffer = useLargest; xmbuf->preservedContents = preserveContents; return (GLXPbuffer) xmbuf->ws.drawable; } else { return 0; } } PUBLIC void glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf ) { XMesaBuffer b = XMesaFindBuffer(dpy, pbuf); if (b) { XMesaDestroyBuffer(b); } } PUBLIC void glXQueryDrawable(Display *dpy, GLXDrawable draw, int attribute, unsigned int *value) { GLuint width, height; XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw); if (!xmbuf) { generate_error(dpy, GLXBadDrawable, draw, X_GLXGetDrawableAttributes, False); return; } /* make sure buffer's dimensions are up to date */ xmesa_get_window_size(dpy, xmbuf, &width, &height); switch (attribute) { case GLX_WIDTH: *value = width; break; case GLX_HEIGHT: *value = height; break; case GLX_PRESERVED_CONTENTS: *value = xmbuf->preservedContents; break; case GLX_LARGEST_PBUFFER: *value = xmbuf->largestPbuffer; 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: generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, true); return; } } PUBLIC GLXContext glXCreateNewContext( Display *dpy, GLXFBConfig config, int renderType, GLXContext shareCtx, Bool direct ) { XMesaVisual xmvis = (XMesaVisual) config; if (!dpy || !config || (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE)) return 0; return create_context(dpy, xmvis, shareCtx ? shareCtx->xmesaContext : NULL, direct, 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0); } PUBLIC int glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value ) { GLXContext glxCtx = 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_TYPE; else *value = GLX_COLOR_INDEX_TYPE; break; case GLX_SCREEN: *value = 0; return Success; default: return GLX_BAD_ATTRIBUTE; } return 0; } PUBLIC void glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask ) { XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); if (xmbuf) xmbuf->selectedEvents = mask; } PUBLIC void 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 ***/ PUBLIC int glXSwapIntervalSGI(int interval) { (void) interval; return 0; } /*** GLX_SGI_video_sync ***/ static unsigned int FrameCounter = 0; PUBLIC int glXGetVideoSyncSGI(unsigned int *count) { /* this is a bogus implementation */ *count = FrameCounter++; return 0; } PUBLIC int 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 ***/ PUBLIC Bool glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx) { return glXMakeContextCurrent( dpy, draw, read, ctx ); } /* not used static GLXDrawable glXGetCurrentReadDrawableSGI(void) { return 0; } */ /*** GLX_SGIX_video_source ***/ #if defined(_VL_H) PUBLIC GLXVideoSourceSGIX 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; } PUBLIC void glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src) { (void) dpy; (void) src; } #endif /*** GLX_EXT_import_context ***/ PUBLIC void glXFreeContextEXT(Display *dpy, GLXContext context) { (void) dpy; (void) context; } PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext context) { (void) context; return 0; } PUBLIC GLXContext glXImportContextEXT(Display *dpy, GLXContextID contextID) { (void) dpy; (void) contextID; return 0; } PUBLIC int glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value) { (void) dpy; (void) context; (void) attribute; (void) value; return 0; } /*** GLX_SGIX_fbconfig ***/ PUBLIC int glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value) { return glXGetFBConfigAttrib(dpy, config, attribute, value); } PUBLIC GLXFBConfigSGIX * glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements) { return (GLXFBConfig *) glXChooseFBConfig(dpy, screen, attrib_list, nelements); } PUBLIC GLXPixmap glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap) { XMesaVisual xmvis = (XMesaVisual) config; XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0); return xmbuf->ws.drawable; /* need to return an X ID */ } PUBLIC GLXContext glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int renderType, GLXContext shareCtx, Bool direct) { XMesaVisual xmvis = (XMesaVisual) config; if (!dpy || !config || (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE)) return 0; return create_context(dpy, xmvis, shareCtx ? shareCtx->xmesaContext : NULL, direct, 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0); } PUBLIC XVisualInfo * glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config) { return glXGetVisualFromFBConfig(dpy, config); } PUBLIC GLXFBConfigSGIX 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 ***/ PUBLIC GLXPbufferSGIX 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->ws.drawable; } PUBLIC void glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf) { XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf); if (xmbuf) { XMesaDestroyBuffer(xmbuf); } } PUBLIC int 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; } PUBLIC void 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; } } PUBLIC void glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask) { XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); if (xmbuf) { *mask = xmbuf->selectedEvents; } else { *mask = 0; } } /*** GLX_SGI_cushion ***/ PUBLIC void glXCushionSGI(Display *dpy, Window win, float cushion) { (void) dpy; (void) win; (void) cushion; } /*** GLX_SGIX_video_resize ***/ PUBLIC int glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel, Window window) { (void) dpy; (void) screen; (void) channel; (void) window; return 0; } PUBLIC int 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; } PUBLIC int 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; } PUBLIC int 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; } PUBLIC int 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_) PUBLIC Bool glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer) { (void) dpy; (void) pbuffer; (void) params; (void) dmbuffer; return False; } #endif /*** GLX_SGIX_swap_group ***/ PUBLIC void glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member) { (void) dpy; (void) drawable; (void) member; } /*** GLX_SGIX_swap_barrier ***/ PUBLIC void glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier) { (void) dpy; (void) drawable; (void) barrier; } PUBLIC Bool glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max) { (void) dpy; (void) screen; (void) max; return False; } /*** GLX_SUN_get_transparent_index ***/ PUBLIC Status 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. */ PUBLIC Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d ) { XMesaBuffer b = XMesaFindBuffer(dpy, d); if (b) { XMesaDestroyBuffer(b); return True; } return False; } /*** GLX_EXT_texture_from_pixmap ***/ PUBLIC void glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer, const int *attrib_list) { XMesaBuffer b = XMesaFindBuffer(dpy, drawable); if (b) XMesaBindTexImage(dpy, b, buffer, attrib_list); } PUBLIC void glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer) { XMesaBuffer b = XMesaFindBuffer(dpy, drawable); if (b) XMesaReleaseTexImage(dpy, b, buffer); } /*** GLX_ARB_create_context ***/ GLXContext glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config, GLXContext shareCtx, Bool direct, const int *attrib_list) { XMesaVisual xmvis = (XMesaVisual) config; int majorVersion = 1, minorVersion = 0; int contextFlags = 0x0; int profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB; int renderType = GLX_RGBA_TYPE; unsigned i; Bool done = False; const int contextFlagsAll = (GLX_CONTEXT_DEBUG_BIT_ARB | GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB); GLXContext ctx; /* parse attrib_list */ for (i = 0; !done && attrib_list && attrib_list[i]; i++) { switch (attrib_list[i]) { case GLX_CONTEXT_MAJOR_VERSION_ARB: majorVersion = attrib_list[++i]; break; case GLX_CONTEXT_MINOR_VERSION_ARB: minorVersion = attrib_list[++i]; break; case GLX_CONTEXT_FLAGS_ARB: contextFlags = attrib_list[++i]; break; case GLX_CONTEXT_PROFILE_MASK_ARB: profileMask = attrib_list[++i]; break; case GLX_RENDER_TYPE: renderType = attrib_list[++i]; break; case 0: /* end of list */ done = True; break; default: /* bad attribute */ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True); return NULL; } } /* check contextFlags */ if (contextFlags & ~contextFlagsAll) { generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True); return NULL; } /* check profileMask */ if (profileMask != GLX_CONTEXT_CORE_PROFILE_BIT_ARB && profileMask != GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB && profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT) { generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False); return NULL; } /* check renderType */ if (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE) { generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True); return NULL; } /* check version */ if (majorVersion <= 0 || minorVersion < 0 || (profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT && ((majorVersion == 1 && minorVersion > 5) || (majorVersion == 2 && minorVersion > 1) || (majorVersion == 3 && minorVersion > 3) || (majorVersion == 4 && minorVersion > 5) || majorVersion > 4))) { generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True); return NULL; } if (profileMask == GLX_CONTEXT_ES_PROFILE_BIT_EXT && ((majorVersion == 1 && minorVersion > 1) || (majorVersion == 2 && minorVersion > 0) || (majorVersion == 3 && minorVersion > 1) || majorVersion > 3)) { /* GLX_EXT_create_context_es2_profile says nothing to justifying a * different error code for invalid ES versions, but this is what NVIDIA * does and piglit expects. */ generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False); return NULL; } if ((contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) && majorVersion < 3) { generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True); return NULL; } if (renderType == GLX_COLOR_INDEX_TYPE && majorVersion >= 3) { generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True); return NULL; } ctx = create_context(dpy, xmvis, shareCtx ? shareCtx->xmesaContext : NULL, direct, majorVersion, minorVersion, profileMask, contextFlags); if (!ctx) { generate_error(dpy, GLXBadFBConfig, 0, X_GLXCreateContextAttribsARB, False); } return ctx; }