/* * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright © 2008 Red Hat, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Soft- * ware"), to deal in the Software without restriction, including without * limitation the rights to use, copy, modify, merge, publish, distribute, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, provided that the above copyright * notice(s) and this permission notice appear in all copies of the Soft- * ware and that both the above copyright notice(s) and this permission * notice appear in supporting documentation. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL- * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE- * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR- * MANCE OF THIS SOFTWARE. * * Except as contained in this notice, the name of a copyright holder shall * not be used in advertising or otherwise to promote the sale, use or * other dealings in this Software without prior written authorization of * the copyright holder. * * Authors: * Kevin E. Martin <kevin@precisioninsight.com> * Brian Paul <brian@precisioninsight.com> * Kristian Høgsberg (krh@redhat.com) */ #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) #include <unistd.h> #include <dlfcn.h> #include <stdarg.h> #include "glxclient.h" #include "dri_common.h" #ifndef RTLD_NOW #define RTLD_NOW 0 #endif #ifndef RTLD_GLOBAL #define RTLD_GLOBAL 0 #endif /** * Print informational message to stderr if LIBGL_DEBUG is set to * "verbose". */ _X_HIDDEN void InfoMessageF(const char *f, ...) { va_list args; const char *env; if ((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) { fprintf(stderr, "libGL: "); va_start(args, f); vfprintf(stderr, f, args); va_end(args); } } /** * Print error message to stderr if LIBGL_DEBUG is set to anything but * "quiet", (do nothing if LIBGL_DEBUG is unset). */ _X_HIDDEN void ErrorMessageF(const char *f, ...) { va_list args; const char *env; if ((env = getenv("LIBGL_DEBUG")) && !strstr(env, "quiet")) { fprintf(stderr, "libGL error: "); va_start(args, f); vfprintf(stderr, f, args); va_end(args); } } /** * Print error message unless LIBGL_DEBUG is set to "quiet". * * The distinction between CriticalErrorMessageF and ErrorMessageF is * that critcial errors will be printed by default, (even when * LIBGL_DEBUG is unset). */ _X_HIDDEN void CriticalErrorMessageF(const char *f, ...) { va_list args; const char *env; if (!(env = getenv("LIBGL_DEBUG")) || !strstr(env, "quiet")) { fprintf(stderr, "libGL error: "); va_start(args, f); vfprintf(stderr, f, args); va_end(args); if (!env || !strstr(env, "verbose")) fprintf(stderr, "libGL error: Try again with LIBGL_DEBUG=verbose for more details.\n"); } } #ifndef DEFAULT_DRIVER_DIR /* this is normally defined in Mesa/configs/default with DRI_DRIVER_SEARCH_PATH */ #define DEFAULT_DRIVER_DIR "/usr/local/lib/dri" #endif /** * Try to \c dlopen the named driver. * * This function adds the "_dri.so" suffix to the driver name and searches the * directories specified by the \c LIBGL_DRIVERS_PATH environment variable in * order to find the driver. * * \param driverName - a name like "i965", "radeon", "nouveau", etc. * * \returns * A handle from \c dlopen, or \c NULL if driver file not found. */ _X_HIDDEN void * driOpenDriver(const char *driverName) { void *glhandle, *handle; const char *libPaths, *p, *next; char realDriverName[200]; int len; /* Attempt to make sure libGL symbols will be visible to the driver */ glhandle = dlopen("libGL.so.1", RTLD_NOW | RTLD_GLOBAL); libPaths = NULL; if (geteuid() == getuid()) { /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */ libPaths = getenv("LIBGL_DRIVERS_PATH"); if (!libPaths) libPaths = getenv("LIBGL_DRIVERS_DIR"); /* deprecated */ } if (libPaths == NULL) libPaths = DEFAULT_DRIVER_DIR; handle = NULL; for (p = libPaths; *p; p = next) { next = strchr(p, ':'); if (next == NULL) { len = strlen(p); next = p + len; } else { len = next - p; next++; } #ifdef GLX_USE_TLS snprintf(realDriverName, sizeof realDriverName, "%.*s/tls/%s_dri.so", len, p, driverName); InfoMessageF("OpenDriver: trying %s\n", realDriverName); handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL); #endif if (handle == NULL) { snprintf(realDriverName, sizeof realDriverName, "%.*s/%s_dri.so", len, p, driverName); InfoMessageF("OpenDriver: trying %s\n", realDriverName); handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL); } if (handle != NULL) break; else ErrorMessageF("dlopen %s failed (%s)\n", realDriverName, dlerror()); } if (!handle) ErrorMessageF("unable to load driver: %s_dri.so\n", driverName); if (glhandle) dlclose(glhandle); return handle; } static GLboolean __driGetMSCRate(__DRIdrawable *draw, int32_t * numerator, int32_t * denominator, void *loaderPrivate) { __GLXDRIdrawable *glxDraw = loaderPrivate; return __glxGetMscRate(glxDraw, numerator, denominator); } _X_HIDDEN const __DRIsystemTimeExtension systemTimeExtension = { {__DRI_SYSTEM_TIME, __DRI_SYSTEM_TIME_VERSION}, __glXGetUST, __driGetMSCRate }; #define __ATTRIB(attrib, field) \ { attrib, offsetof(struct glx_config, field) } static const struct { unsigned int attrib, offset; } attribMap[] = { __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits), __ATTRIB(__DRI_ATTRIB_LEVEL, level), __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits), __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits), __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits), __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits), __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits), __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits), __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits), __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits), __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits), __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits), __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers), __ATTRIB(__DRI_ATTRIB_SAMPLES, samples), __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode), __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode), __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers), #if 0 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel), __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentIndex), __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed), __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen), __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue), __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha), __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask), __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask), __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask), __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask), #endif __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth), __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight), __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels), __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth), __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight), #if 0 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod), #endif __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb), __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba), __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture), __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted), __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable) }; static int scalarEqual(struct glx_config *mode, unsigned int attrib, unsigned int value) { unsigned int glxValue; int i; for (i = 0; i < ARRAY_SIZE(attribMap); i++) if (attribMap[i].attrib == attrib) { glxValue = *(unsigned int *) ((char *) mode + attribMap[i].offset); return glxValue == GLX_DONT_CARE || glxValue == value; } return GL_TRUE; /* Is a non-existing attribute equal to value? */ } static int driConfigEqual(const __DRIcoreExtension *core, struct glx_config *config, const __DRIconfig *driConfig) { unsigned int attrib, value, glxValue; int i; i = 0; while (core->indexConfigAttrib(driConfig, i++, &attrib, &value)) { switch (attrib) { case __DRI_ATTRIB_RENDER_TYPE: glxValue = 0; if (value & __DRI_ATTRIB_RGBA_BIT) { glxValue |= GLX_RGBA_BIT; } else if (value & __DRI_ATTRIB_COLOR_INDEX_BIT) { glxValue |= GLX_COLOR_INDEX_BIT; } if (glxValue != config->renderType) return GL_FALSE; break; case __DRI_ATTRIB_CONFIG_CAVEAT: if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG) glxValue = GLX_NON_CONFORMANT_CONFIG; else if (value & __DRI_ATTRIB_SLOW_BIT) glxValue = GLX_SLOW_CONFIG; else glxValue = GLX_NONE; if (glxValue != config->visualRating) return GL_FALSE; break; case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS: glxValue = 0; if (value & __DRI_ATTRIB_TEXTURE_1D_BIT) glxValue |= GLX_TEXTURE_1D_BIT_EXT; if (value & __DRI_ATTRIB_TEXTURE_2D_BIT) glxValue |= GLX_TEXTURE_2D_BIT_EXT; if (value & __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT) glxValue |= GLX_TEXTURE_RECTANGLE_BIT_EXT; if (config->bindToTextureTargets != GLX_DONT_CARE && glxValue != config->bindToTextureTargets) return GL_FALSE; break; default: if (!scalarEqual(config, attrib, value)) return GL_FALSE; } } return GL_TRUE; } static struct glx_config * createDriMode(const __DRIcoreExtension * core, struct glx_config *config, const __DRIconfig **driConfigs) { __GLXDRIconfigPrivate *driConfig; int i; for (i = 0; driConfigs[i]; i++) { if (driConfigEqual(core, config, driConfigs[i])) break; } if (driConfigs[i] == NULL) return NULL; driConfig = Xmalloc(sizeof *driConfig); if (driConfig == NULL) return NULL; driConfig->base = *config; driConfig->driConfig = driConfigs[i]; return &driConfig->base; } _X_HIDDEN struct glx_config * driConvertConfigs(const __DRIcoreExtension * core, struct glx_config *configs, const __DRIconfig **driConfigs) { struct glx_config head, *tail, *m; tail = &head; head.next = NULL; for (m = configs; m; m = m->next) { tail->next = createDriMode(core, m, driConfigs); if (tail->next == NULL) { /* no matching dri config for m */ continue; } tail = tail->next; } return head.next; } _X_HIDDEN void driDestroyConfigs(const __DRIconfig **configs) { int i; for (i = 0; configs[i]; i++) free((__DRIconfig *) configs[i]); free(configs); } _X_HIDDEN __GLXDRIdrawable * driFetchDrawable(struct glx_context *gc, GLXDrawable glxDrawable) { struct glx_display *const priv = __glXInitialize(gc->psc->dpy); __GLXDRIdrawable *pdraw; struct glx_screen *psc; if (priv == NULL) return NULL; psc = priv->screens[gc->screen]; if (priv->drawHash == NULL) return NULL; if (__glxHashLookup(priv->drawHash, glxDrawable, (void *) &pdraw) == 0) { pdraw->refcount ++; return pdraw; } pdraw = psc->driScreen->createDrawable(psc, glxDrawable, glxDrawable, gc->config); if (pdraw == NULL) { ErrorMessageF("failed to create drawable\n"); return NULL; } if (__glxHashInsert(priv->drawHash, glxDrawable, pdraw)) { (*pdraw->destroyDrawable) (pdraw); return NULL; } pdraw->refcount = 1; return pdraw; } _X_HIDDEN void driReleaseDrawables(struct glx_context *gc) { const struct glx_display *priv = gc->psc->display; __GLXDRIdrawable *pdraw; if (priv == NULL) return; if (__glxHashLookup(priv->drawHash, gc->currentDrawable, (void *) &pdraw) == 0) { if (pdraw->drawable == pdraw->xDrawable) { pdraw->refcount --; if (pdraw->refcount == 0) { (*pdraw->destroyDrawable)(pdraw); __glxHashDelete(priv->drawHash, gc->currentDrawable); } } } if (__glxHashLookup(priv->drawHash, gc->currentReadable, (void *) &pdraw) == 0) { if (pdraw->drawable == pdraw->xDrawable) { pdraw->refcount --; if (pdraw->refcount == 0) { (*pdraw->destroyDrawable)(pdraw); __glxHashDelete(priv->drawHash, gc->currentReadable); } } } gc->currentDrawable = None; gc->currentReadable = None; } _X_HIDDEN bool dri2_convert_glx_attribs(unsigned num_attribs, const uint32_t *attribs, unsigned *major_ver, unsigned *minor_ver, uint32_t *flags, unsigned *api, int *reset, unsigned *error) { unsigned i; bool got_profile = false; uint32_t profile; int render_type = GLX_RGBA_TYPE; if (num_attribs == 0) { *api = __DRI_API_OPENGL; return true; } /* This is actually an internal error, but what the heck. */ if (attribs == NULL) { *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; return false; } *major_ver = 1; *minor_ver = 0; *reset = __DRI_CTX_RESET_NO_NOTIFICATION; for (i = 0; i < num_attribs; i++) { switch (attribs[i * 2]) { case GLX_CONTEXT_MAJOR_VERSION_ARB: *major_ver = attribs[i * 2 + 1]; break; case GLX_CONTEXT_MINOR_VERSION_ARB: *minor_ver = attribs[i * 2 + 1]; break; case GLX_CONTEXT_FLAGS_ARB: *flags = attribs[i * 2 + 1]; break; case GLX_CONTEXT_PROFILE_MASK_ARB: profile = attribs[i * 2 + 1]; got_profile = true; break; case GLX_RENDER_TYPE: render_type = attribs[i * 2 + 1]; break; case GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB: switch (attribs[i * 2 + 1]) { case GLX_NO_RESET_NOTIFICATION_ARB: *reset = __DRI_CTX_RESET_NO_NOTIFICATION; break; case GLX_LOSE_CONTEXT_ON_RESET_ARB: *reset = __DRI_CTX_RESET_LOSE_CONTEXT; break; default: *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; return false; } break; default: /* If an unknown attribute is received, fail. */ *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; return false; } } *api = __DRI_API_OPENGL; if (!got_profile) { if (*major_ver > 3 || (*major_ver == 3 && *minor_ver >= 2)) *api = __DRI_API_OPENGL_CORE; } else { switch (profile) { case GLX_CONTEXT_CORE_PROFILE_BIT_ARB: /* There are no profiles before OpenGL 3.2. The * GLX_ARB_create_context_profile spec says: * * "If the requested OpenGL version is less than 3.2, * GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality * of the context is determined solely by the requested version." */ *api = (*major_ver > 3 || (*major_ver == 3 && *minor_ver >= 2)) ? __DRI_API_OPENGL_CORE : __DRI_API_OPENGL; break; case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB: *api = __DRI_API_OPENGL; break; case GLX_CONTEXT_ES2_PROFILE_BIT_EXT: *api = __DRI_API_GLES2; break; default: *error = __DRI_CTX_ERROR_BAD_API; return false; } } /* Unknown flag value. */ if (*flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS)) { *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; return false; } /* There are no forward-compatible contexts before OpenGL 3.0. The * GLX_ARB_create_context spec says: * * "Forward-compatible contexts are defined only for OpenGL versions * 3.0 and later." */ if (*major_ver < 3 && (*flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) { *error = __DRI_CTX_ERROR_BAD_FLAG; return false; } if (*major_ver >= 3 && render_type == GLX_COLOR_INDEX_TYPE) { *error = __DRI_CTX_ERROR_BAD_FLAG; return false; } /* The GLX_EXT_create_context_es2_profile spec says: * * "... If the version requested is 2.0, and the * GLX_CONTEXT_ES2_PROFILE_BIT_EXT bit is set in the * GLX_CONTEXT_PROFILE_MASK_ARB attribute (see below), then the context * returned will implement OpenGL ES 2.0. This is the only way in which * an implementation may request an OpenGL ES 2.0 context." */ if (*api == __DRI_API_GLES2 && (*major_ver != 2 || *minor_ver != 0)) { *error = __DRI_CTX_ERROR_BAD_API; return false; } *error = __DRI_CTX_ERROR_SUCCESS; return true; } #endif /* GLX_DIRECT_RENDERING */