| /* |
| * (C) Copyright IBM Corporation 2002, 2004 |
| * 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 |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, 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 (including the next |
| * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS AND/OR THEIR SUPPLIERS 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. |
| */ |
| |
| /** |
| * \file dri_util.c |
| * DRI utility functions. |
| * |
| * This module acts as glue between GLX and the actual hardware driver. A DRI |
| * driver doesn't really \e have to use any of this - it's optional. But, some |
| * useful stuff is done here that otherwise would have to be duplicated in most |
| * drivers. |
| * |
| * Basically, these utility functions take care of some of the dirty details of |
| * screen initialization, context creation, context binding, DRM setup, etc. |
| * |
| * These functions are compiled into each DRI driver so libGL.so knows nothing |
| * about them. |
| */ |
| |
| |
| #include <stdbool.h> |
| #include "dri_util.h" |
| #include "utils.h" |
| #include "util/u_endian.h" |
| #include "util/driconf.h" |
| #include "main/mtypes.h" |
| #include "main/framebuffer.h" |
| #include "main/version.h" |
| #include "main/debug_output.h" |
| #include "main/errors.h" |
| #include "main/macros.h" |
| |
| const char __dri2ConfigOptions[] = |
| DRI_CONF_BEGIN |
| DRI_CONF_SECTION_PERFORMANCE |
| DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1) |
| DRI_CONF_SECTION_END |
| DRI_CONF_END; |
| |
| /*****************************************************************/ |
| /** \name Screen handling functions */ |
| /*****************************************************************/ |
| /*@{*/ |
| |
| static void |
| setupLoaderExtensions(__DRIscreen *psp, |
| const __DRIextension **extensions) |
| { |
| int i; |
| |
| for (i = 0; extensions[i]; i++) { |
| if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0) |
| psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i]; |
| if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0) |
| psp->dri2.image = (__DRIimageLookupExtension *) extensions[i]; |
| if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0) |
| psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i]; |
| if (strcmp(extensions[i]->name, __DRI_BACKGROUND_CALLABLE) == 0) |
| psp->dri2.backgroundCallable = (__DRIbackgroundCallableExtension *) extensions[i]; |
| if (strcmp(extensions[i]->name, __DRI_SWRAST_LOADER) == 0) |
| psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i]; |
| if (strcmp(extensions[i]->name, __DRI_IMAGE_LOADER) == 0) |
| psp->image.loader = (__DRIimageLoaderExtension *) extensions[i]; |
| if (strcmp(extensions[i]->name, __DRI_MUTABLE_RENDER_BUFFER_LOADER) == 0) |
| psp->mutableRenderBuffer.loader = (__DRImutableRenderBufferLoaderExtension *) extensions[i]; |
| } |
| } |
| |
| /** |
| * This pointer determines which driver API we'll use in the case of the |
| * loader not passing us an explicit driver extensions list (that would, |
| * itself, contain a pointer to a driver API.) |
| * |
| * A driver's driDriverGetExtensions_drivername() can update this pointer to |
| * what it's returning, and a loader that is ignorant of createNewScreen2() |
| * will get the correct driver screen created, as long as no other |
| * driDriverGetExtensions() happened in between the first one and the |
| * createNewScreen(). |
| * |
| * This allows the X Server to not require the significant dri_interface.h |
| * updates for doing createNewScreen2(), which would discourage backporting of |
| * the X Server patches to support the new loader interface. |
| */ |
| const struct __DriverAPIRec *globalDriverAPI = &driDriverAPI; |
| |
| /** |
| * This is the first entrypoint in the driver called by the DRI driver loader |
| * after dlopen()ing it. |
| * |
| * It's used to create global state for the driver across contexts on the same |
| * Display. |
| */ |
| static __DRIscreen * |
| driCreateNewScreen2(int scrn, int fd, |
| const __DRIextension **extensions, |
| const __DRIextension **driver_extensions, |
| const __DRIconfig ***driver_configs, void *data) |
| { |
| static const __DRIextension *emptyExtensionList[] = { NULL }; |
| __DRIscreen *psp; |
| |
| psp = calloc(1, sizeof(*psp)); |
| if (!psp) |
| return NULL; |
| |
| /* By default, use the global driDriverAPI symbol (non-megadrivers). */ |
| psp->driver = globalDriverAPI; |
| |
| /* If the driver exposes its vtable through its extensions list |
| * (megadrivers), use that instead. |
| */ |
| if (driver_extensions) { |
| for (int i = 0; driver_extensions[i]; i++) { |
| if (strcmp(driver_extensions[i]->name, __DRI_DRIVER_VTABLE) == 0) { |
| psp->driver = |
| ((__DRIDriverVtableExtension *)driver_extensions[i])->vtable; |
| } |
| } |
| } |
| |
| setupLoaderExtensions(psp, extensions); |
| |
| psp->loaderPrivate = data; |
| |
| psp->extensions = emptyExtensionList; |
| psp->fd = fd; |
| psp->myNum = scrn; |
| |
| /* Option parsing before ->InitScreen(), as some options apply there. */ |
| driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions); |
| driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum, |
| "dri2", NULL, NULL, 0); |
| |
| *driver_configs = psp->driver->InitScreen(psp); |
| if (*driver_configs == NULL) { |
| free(psp); |
| return NULL; |
| } |
| |
| struct gl_constants consts = { 0 }; |
| gl_api api; |
| unsigned version; |
| |
| api = API_OPENGLES2; |
| if (_mesa_override_gl_version_contextless(&consts, &api, &version)) |
| psp->max_gl_es2_version = version; |
| |
| api = API_OPENGL_COMPAT; |
| if (_mesa_override_gl_version_contextless(&consts, &api, &version)) { |
| psp->max_gl_core_version = version; |
| if (api == API_OPENGL_COMPAT) |
| psp->max_gl_compat_version = version; |
| } |
| |
| psp->api_mask = 0; |
| if (psp->max_gl_compat_version > 0) |
| psp->api_mask |= (1 << __DRI_API_OPENGL); |
| if (psp->max_gl_core_version > 0) |
| psp->api_mask |= (1 << __DRI_API_OPENGL_CORE); |
| if (psp->max_gl_es1_version > 0) |
| psp->api_mask |= (1 << __DRI_API_GLES); |
| if (psp->max_gl_es2_version > 0) |
| psp->api_mask |= (1 << __DRI_API_GLES2); |
| if (psp->max_gl_es2_version >= 30) |
| psp->api_mask |= (1 << __DRI_API_GLES3); |
| |
| return psp; |
| } |
| |
| static __DRIscreen * |
| dri2CreateNewScreen(int scrn, int fd, |
| const __DRIextension **extensions, |
| const __DRIconfig ***driver_configs, void *data) |
| { |
| return driCreateNewScreen2(scrn, fd, extensions, NULL, |
| driver_configs, data); |
| } |
| |
| /** swrast driver createNewScreen entrypoint. */ |
| static __DRIscreen * |
| driSWRastCreateNewScreen(int scrn, const __DRIextension **extensions, |
| const __DRIconfig ***driver_configs, void *data) |
| { |
| return driCreateNewScreen2(scrn, -1, extensions, NULL, |
| driver_configs, data); |
| } |
| |
| static __DRIscreen * |
| driSWRastCreateNewScreen2(int scrn, const __DRIextension **extensions, |
| const __DRIextension **driver_extensions, |
| const __DRIconfig ***driver_configs, void *data) |
| { |
| return driCreateNewScreen2(scrn, -1, extensions, driver_extensions, |
| driver_configs, data); |
| } |
| |
| /** |
| * Destroy the per-screen private information. |
| * |
| * \internal |
| * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls |
| * drmClose(), and finally frees \p screenPrivate. |
| */ |
| static void driDestroyScreen(__DRIscreen *psp) |
| { |
| if (psp) { |
| /* No interaction with the X-server is possible at this point. This |
| * routine is called after XCloseDisplay, so there is no protocol |
| * stream open to the X-server anymore. |
| */ |
| |
| psp->driver->DestroyScreen(psp); |
| |
| driDestroyOptionCache(&psp->optionCache); |
| driDestroyOptionInfo(&psp->optionInfo); |
| |
| free(psp); |
| } |
| } |
| |
| static const __DRIextension **driGetExtensions(__DRIscreen *psp) |
| { |
| return psp->extensions; |
| } |
| |
| /*@}*/ |
| |
| |
| static bool |
| validate_context_version(__DRIscreen *screen, |
| int mesa_api, |
| unsigned major_version, |
| unsigned minor_version, |
| unsigned *dri_ctx_error) |
| { |
| unsigned req_version = 10 * major_version + minor_version; |
| unsigned max_version = 0; |
| |
| switch (mesa_api) { |
| case API_OPENGL_COMPAT: |
| max_version = screen->max_gl_compat_version; |
| break; |
| case API_OPENGL_CORE: |
| max_version = screen->max_gl_core_version; |
| break; |
| case API_OPENGLES: |
| max_version = screen->max_gl_es1_version; |
| break; |
| case API_OPENGLES2: |
| max_version = screen->max_gl_es2_version; |
| break; |
| default: |
| max_version = 0; |
| break; |
| } |
| |
| if (max_version == 0) { |
| *dri_ctx_error = __DRI_CTX_ERROR_BAD_API; |
| return false; |
| } else if (req_version > max_version) { |
| *dri_ctx_error = __DRI_CTX_ERROR_BAD_VERSION; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /*****************************************************************/ |
| /** \name Context handling functions */ |
| /*****************************************************************/ |
| /*@{*/ |
| |
| static __DRIcontext * |
| driCreateContextAttribs(__DRIscreen *screen, int api, |
| const __DRIconfig *config, |
| __DRIcontext *shared, |
| unsigned num_attribs, |
| const uint32_t *attribs, |
| unsigned *error, |
| void *data) |
| { |
| __DRIcontext *context; |
| const struct gl_config *modes = (config != NULL) ? &config->modes : NULL; |
| void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL; |
| gl_api mesa_api; |
| struct __DriverContextConfig ctx_config; |
| |
| ctx_config.major_version = 1; |
| ctx_config.minor_version = 0; |
| ctx_config.flags = 0; |
| ctx_config.attribute_mask = 0; |
| ctx_config.priority = __DRI_CTX_PRIORITY_MEDIUM; |
| |
| assert((num_attribs == 0) || (attribs != NULL)); |
| |
| if (!(screen->api_mask & (1 << api))) { |
| *error = __DRI_CTX_ERROR_BAD_API; |
| return NULL; |
| } |
| |
| switch (api) { |
| case __DRI_API_OPENGL: |
| mesa_api = API_OPENGL_COMPAT; |
| break; |
| case __DRI_API_GLES: |
| mesa_api = API_OPENGLES; |
| break; |
| case __DRI_API_GLES2: |
| case __DRI_API_GLES3: |
| mesa_api = API_OPENGLES2; |
| break; |
| case __DRI_API_OPENGL_CORE: |
| mesa_api = API_OPENGL_CORE; |
| break; |
| default: |
| *error = __DRI_CTX_ERROR_BAD_API; |
| return NULL; |
| } |
| |
| for (unsigned i = 0; i < num_attribs; i++) { |
| switch (attribs[i * 2]) { |
| case __DRI_CTX_ATTRIB_MAJOR_VERSION: |
| ctx_config.major_version = attribs[i * 2 + 1]; |
| break; |
| case __DRI_CTX_ATTRIB_MINOR_VERSION: |
| ctx_config.minor_version = attribs[i * 2 + 1]; |
| break; |
| case __DRI_CTX_ATTRIB_FLAGS: |
| ctx_config.flags = attribs[i * 2 + 1]; |
| break; |
| case __DRI_CTX_ATTRIB_RESET_STRATEGY: |
| if (attribs[i * 2 + 1] != __DRI_CTX_RESET_NO_NOTIFICATION) { |
| ctx_config.attribute_mask |= |
| __DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY; |
| ctx_config.reset_strategy = attribs[i * 2 + 1]; |
| } else { |
| ctx_config.attribute_mask &= |
| ~__DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY; |
| } |
| break; |
| case __DRI_CTX_ATTRIB_PRIORITY: |
| ctx_config.attribute_mask |= __DRIVER_CONTEXT_ATTRIB_PRIORITY; |
| ctx_config.priority = attribs[i * 2 + 1]; |
| break; |
| case __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR: |
| if (attribs[i * 2 + 1] != __DRI_CTX_RELEASE_BEHAVIOR_FLUSH) { |
| ctx_config.attribute_mask |= |
| __DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR; |
| ctx_config.release_behavior = attribs[i * 2 + 1]; |
| } else { |
| ctx_config.attribute_mask &= |
| ~__DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR; |
| } |
| break; |
| default: |
| /* We can't create a context that satisfies the requirements of an |
| * attribute that we don't understand. Return failure. |
| */ |
| assert(!"Should not get here."); |
| *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; |
| return NULL; |
| } |
| } |
| |
| /* The specific Mesa driver may not support the GL_ARB_compatibilty |
| * extension or the compatibility profile. In that case, we treat an |
| * API_OPENGL_COMPAT 3.1 as API_OPENGL_CORE. We reject API_OPENGL_COMPAT |
| * 3.2+ in any case. |
| */ |
| if (mesa_api == API_OPENGL_COMPAT && |
| ctx_config.major_version == 3 && ctx_config.minor_version == 1 && |
| screen->max_gl_compat_version < 31) |
| mesa_api = API_OPENGL_CORE; |
| |
| /* The latest version of EGL_KHR_create_context spec says: |
| * |
| * "If the EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR flag bit is set in |
| * EGL_CONTEXT_FLAGS_KHR, then a <debug context> will be created. |
| * [...] This bit is supported for OpenGL and OpenGL ES contexts. |
| * |
| * No other EGL_CONTEXT_OPENGL_*_BIT is legal for an ES context. |
| * |
| * However, Mesa's EGL layer translates the context attribute |
| * EGL_CONTEXT_OPENGL_ROBUST_ACCESS into the context flag |
| * __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS. That attribute is legal for ES |
| * (with EGL 1.5 or EGL_EXT_create_context_robustness) and GL (only with |
| * EGL 1.5). |
| * |
| * From the EGL_EXT_create_context_robustness spec: |
| * |
| * This extension is written against the OpenGL ES 2.0 Specification |
| * but can apply to OpenGL ES 1.1 and up. |
| * |
| * From the EGL 1.5 (2014.08.27) spec, p55: |
| * |
| * If the EGL_CONTEXT_OPENGL_ROBUST_ACCESS attribute is set to |
| * EGL_TRUE, a context supporting robust buffer access will be created. |
| * OpenGL contexts must support the GL_ARB_robustness extension, or |
| * equivalent core API functional- ity. OpenGL ES contexts must support |
| * the GL_EXT_robustness extension, or equivalent core API |
| * functionality. |
| */ |
| if (mesa_api != API_OPENGL_COMPAT |
| && mesa_api != API_OPENGL_CORE |
| && (ctx_config.flags & ~(__DRI_CTX_FLAG_DEBUG | |
| __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS | |
| __DRI_CTX_FLAG_NO_ERROR))) { |
| *error = __DRI_CTX_ERROR_BAD_FLAG; |
| return NULL; |
| } |
| |
| /* 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." |
| * |
| * Forward-looking contexts are supported by silently converting the |
| * requested API to API_OPENGL_CORE. |
| * |
| * In Mesa, a debug context is the same as a regular context. |
| */ |
| if ((ctx_config.flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) { |
| mesa_api = API_OPENGL_CORE; |
| } |
| |
| const uint32_t allowed_flags = (__DRI_CTX_FLAG_DEBUG |
| | __DRI_CTX_FLAG_FORWARD_COMPATIBLE |
| | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS |
| | __DRI_CTX_FLAG_NO_ERROR); |
| if (ctx_config.flags & ~allowed_flags) { |
| *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; |
| return NULL; |
| } |
| |
| if (!validate_context_version(screen, mesa_api, |
| ctx_config.major_version, |
| ctx_config.minor_version, |
| error)) |
| return NULL; |
| |
| context = calloc(1, sizeof *context); |
| if (!context) { |
| *error = __DRI_CTX_ERROR_NO_MEMORY; |
| return NULL; |
| } |
| |
| context->loaderPrivate = data; |
| |
| context->driScreenPriv = screen; |
| context->driDrawablePriv = NULL; |
| context->driReadablePriv = NULL; |
| |
| if (!screen->driver->CreateContext(mesa_api, modes, context, |
| &ctx_config, error, shareCtx)) { |
| free(context); |
| return NULL; |
| } |
| |
| *error = __DRI_CTX_ERROR_SUCCESS; |
| return context; |
| } |
| |
| void |
| driContextSetFlags(struct gl_context *ctx, uint32_t flags) |
| { |
| if ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) |
| ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT; |
| if ((flags & __DRI_CTX_FLAG_DEBUG) != 0) { |
| _mesa_set_debug_state_int(ctx, GL_DEBUG_OUTPUT, GL_TRUE); |
| ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT; |
| } |
| if ((flags & __DRI_CTX_FLAG_NO_ERROR) != 0) |
| ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR; |
| } |
| |
| static __DRIcontext * |
| driCreateNewContextForAPI(__DRIscreen *screen, int api, |
| const __DRIconfig *config, |
| __DRIcontext *shared, void *data) |
| { |
| unsigned error; |
| |
| return driCreateContextAttribs(screen, api, config, shared, 0, NULL, |
| &error, data); |
| } |
| |
| static __DRIcontext * |
| driCreateNewContext(__DRIscreen *screen, const __DRIconfig *config, |
| __DRIcontext *shared, void *data) |
| { |
| return driCreateNewContextForAPI(screen, __DRI_API_OPENGL, |
| config, shared, data); |
| } |
| |
| /** |
| * Destroy the per-context private information. |
| * |
| * \internal |
| * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls |
| * drmDestroyContext(), and finally frees \p contextPrivate. |
| */ |
| static void |
| driDestroyContext(__DRIcontext *pcp) |
| { |
| if (pcp) { |
| pcp->driScreenPriv->driver->DestroyContext(pcp); |
| free(pcp); |
| } |
| } |
| |
| static int |
| driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask) |
| { |
| (void) dest; |
| (void) src; |
| (void) mask; |
| return GL_FALSE; |
| } |
| |
| /*@}*/ |
| |
| |
| /*****************************************************************/ |
| /** \name Context (un)binding functions */ |
| /*****************************************************************/ |
| /*@{*/ |
| |
| static void dri_get_drawable(__DRIdrawable *pdp); |
| static void dri_put_drawable(__DRIdrawable *pdp); |
| |
| /** |
| * This function takes both a read buffer and a draw buffer. This is needed |
| * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent |
| * function. |
| */ |
| static int driBindContext(__DRIcontext *pcp, |
| __DRIdrawable *pdp, |
| __DRIdrawable *prp) |
| { |
| /* |
| ** Assume error checking is done properly in glXMakeCurrent before |
| ** calling driUnbindContext. |
| */ |
| |
| if (!pcp) |
| return GL_FALSE; |
| |
| /* Bind the drawable to the context */ |
| pcp->driDrawablePriv = pdp; |
| pcp->driReadablePriv = prp; |
| if (pdp) { |
| pdp->driContextPriv = pcp; |
| dri_get_drawable(pdp); |
| } |
| if (prp && pdp != prp) { |
| dri_get_drawable(prp); |
| } |
| |
| return pcp->driScreenPriv->driver->MakeCurrent(pcp, pdp, prp); |
| } |
| |
| /** |
| * Unbind context. |
| * |
| * \param scrn the screen. |
| * \param gc context. |
| * |
| * \return \c GL_TRUE on success, or \c GL_FALSE on failure. |
| * |
| * \internal |
| * This function calls __DriverAPIRec::UnbindContext, and then decrements |
| * __DRIdrawableRec::refcount which must be non-zero for a successful |
| * return. |
| * |
| * While casting the opaque private pointers associated with the parameters |
| * into their respective real types it also assures they are not \c NULL. |
| */ |
| static int driUnbindContext(__DRIcontext *pcp) |
| { |
| __DRIdrawable *pdp; |
| __DRIdrawable *prp; |
| |
| /* |
| ** Assume error checking is done properly in glXMakeCurrent before |
| ** calling driUnbindContext. |
| */ |
| |
| if (pcp == NULL) |
| return GL_FALSE; |
| |
| /* |
| ** Call driUnbindContext before checking for valid drawables |
| ** to handle surfaceless contexts properly. |
| */ |
| pcp->driScreenPriv->driver->UnbindContext(pcp); |
| |
| pdp = pcp->driDrawablePriv; |
| prp = pcp->driReadablePriv; |
| |
| /* already unbound */ |
| if (!pdp && !prp) |
| return GL_TRUE; |
| |
| assert(pdp); |
| if (pdp->refcount == 0) { |
| /* ERROR!!! */ |
| return GL_FALSE; |
| } |
| |
| dri_put_drawable(pdp); |
| |
| if (prp != pdp) { |
| if (prp->refcount == 0) { |
| /* ERROR!!! */ |
| return GL_FALSE; |
| } |
| |
| dri_put_drawable(prp); |
| } |
| |
| pcp->driDrawablePriv = NULL; |
| pcp->driReadablePriv = NULL; |
| |
| return GL_TRUE; |
| } |
| |
| /*@}*/ |
| |
| |
| static void dri_get_drawable(__DRIdrawable *pdp) |
| { |
| pdp->refcount++; |
| } |
| |
| static void dri_put_drawable(__DRIdrawable *pdp) |
| { |
| if (pdp) { |
| pdp->refcount--; |
| if (pdp->refcount) |
| return; |
| |
| pdp->driScreenPriv->driver->DestroyBuffer(pdp); |
| free(pdp); |
| } |
| } |
| |
| static __DRIdrawable * |
| driCreateNewDrawable(__DRIscreen *screen, |
| const __DRIconfig *config, |
| void *data) |
| { |
| __DRIdrawable *pdraw; |
| |
| assert(data != NULL); |
| |
| pdraw = malloc(sizeof *pdraw); |
| if (!pdraw) |
| return NULL; |
| |
| pdraw->loaderPrivate = data; |
| |
| pdraw->driScreenPriv = screen; |
| pdraw->driContextPriv = NULL; |
| pdraw->refcount = 0; |
| pdraw->lastStamp = 0; |
| pdraw->w = 0; |
| pdraw->h = 0; |
| |
| dri_get_drawable(pdraw); |
| |
| if (!screen->driver->CreateBuffer(screen, pdraw, &config->modes, |
| GL_FALSE)) { |
| free(pdraw); |
| return NULL; |
| } |
| |
| pdraw->dri2.stamp = pdraw->lastStamp + 1; |
| |
| return pdraw; |
| } |
| |
| static void |
| driDestroyDrawable(__DRIdrawable *pdp) |
| { |
| /* |
| * The loader's data structures are going away, even if pdp itself stays |
| * around for the time being because it is currently bound. This happens |
| * when a currently bound GLX pixmap is destroyed. |
| * |
| * Clear out the pointer back into the loader's data structures to avoid |
| * accessing an outdated pointer. |
| */ |
| pdp->loaderPrivate = NULL; |
| |
| dri_put_drawable(pdp); |
| } |
| |
| static __DRIbuffer * |
| dri2AllocateBuffer(__DRIscreen *screen, |
| unsigned int attachment, unsigned int format, |
| int width, int height) |
| { |
| return screen->driver->AllocateBuffer(screen, attachment, format, |
| width, height); |
| } |
| |
| static void |
| dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer) |
| { |
| screen->driver->ReleaseBuffer(screen, buffer); |
| } |
| |
| |
| static int |
| dri2ConfigQueryb(__DRIscreen *screen, const char *var, unsigned char *val) |
| { |
| if (!driCheckOption(&screen->optionCache, var, DRI_BOOL)) |
| return -1; |
| |
| *val = driQueryOptionb(&screen->optionCache, var); |
| |
| return 0; |
| } |
| |
| static int |
| dri2ConfigQueryi(__DRIscreen *screen, const char *var, int *val) |
| { |
| if (!driCheckOption(&screen->optionCache, var, DRI_INT) && |
| !driCheckOption(&screen->optionCache, var, DRI_ENUM)) |
| return -1; |
| |
| *val = driQueryOptioni(&screen->optionCache, var); |
| |
| return 0; |
| } |
| |
| static int |
| dri2ConfigQueryf(__DRIscreen *screen, const char *var, float *val) |
| { |
| if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT)) |
| return -1; |
| |
| *val = driQueryOptionf(&screen->optionCache, var); |
| |
| return 0; |
| } |
| |
| static unsigned int |
| driGetAPIMask(__DRIscreen *screen) |
| { |
| return screen->api_mask; |
| } |
| |
| /** |
| * swrast swapbuffers entrypoint. |
| * |
| * DRI2 implements this inside the loader with only flushes handled by the |
| * driver. |
| */ |
| static void |
| driSwapBuffers(__DRIdrawable *pdp) |
| { |
| assert(pdp->driScreenPriv->swrast_loader); |
| |
| pdp->driScreenPriv->driver->SwapBuffers(pdp); |
| } |
| |
| /** Core interface */ |
| const __DRIcoreExtension driCoreExtension = { |
| .base = { __DRI_CORE, 2 }, |
| |
| .createNewScreen = NULL, |
| .destroyScreen = driDestroyScreen, |
| .getExtensions = driGetExtensions, |
| .getConfigAttrib = driGetConfigAttrib, |
| .indexConfigAttrib = driIndexConfigAttrib, |
| .createNewDrawable = NULL, |
| .destroyDrawable = driDestroyDrawable, |
| .swapBuffers = driSwapBuffers, /* swrast */ |
| .createNewContext = driCreateNewContext, /* swrast */ |
| .copyContext = driCopyContext, |
| .destroyContext = driDestroyContext, |
| .bindContext = driBindContext, |
| .unbindContext = driUnbindContext |
| }; |
| |
| /** DRI2 interface */ |
| const __DRIdri2Extension driDRI2Extension = { |
| .base = { __DRI_DRI2, 4 }, |
| |
| .createNewScreen = dri2CreateNewScreen, |
| .createNewDrawable = driCreateNewDrawable, |
| .createNewContext = driCreateNewContext, |
| .getAPIMask = driGetAPIMask, |
| .createNewContextForAPI = driCreateNewContextForAPI, |
| .allocateBuffer = dri2AllocateBuffer, |
| .releaseBuffer = dri2ReleaseBuffer, |
| .createContextAttribs = driCreateContextAttribs, |
| .createNewScreen2 = driCreateNewScreen2, |
| }; |
| |
| const __DRIswrastExtension driSWRastExtension = { |
| .base = { __DRI_SWRAST, 4 }, |
| |
| .createNewScreen = driSWRastCreateNewScreen, |
| .createNewDrawable = driCreateNewDrawable, |
| .createNewContextForAPI = driCreateNewContextForAPI, |
| .createContextAttribs = driCreateContextAttribs, |
| .createNewScreen2 = driSWRastCreateNewScreen2, |
| }; |
| |
| const __DRI2configQueryExtension dri2ConfigQueryExtension = { |
| .base = { __DRI2_CONFIG_QUERY, 1 }, |
| |
| .configQueryb = dri2ConfigQueryb, |
| .configQueryi = dri2ConfigQueryi, |
| .configQueryf = dri2ConfigQueryf, |
| }; |
| |
| const __DRI2flushControlExtension dri2FlushControlExtension = { |
| .base = { __DRI2_FLUSH_CONTROL, 1 } |
| }; |
| |
| void |
| dri2InvalidateDrawable(__DRIdrawable *drawable) |
| { |
| drawable->dri2.stamp++; |
| } |
| |
| /** |
| * Check that the gl_framebuffer associated with dPriv is the right size. |
| * Resize the gl_framebuffer if needed. |
| * It's expected that the dPriv->driverPrivate member points to a |
| * gl_framebuffer object. |
| */ |
| void |
| driUpdateFramebufferSize(struct gl_context *ctx, const __DRIdrawable *dPriv) |
| { |
| struct gl_framebuffer *fb = (struct gl_framebuffer *) dPriv->driverPrivate; |
| if (fb && (dPriv->w != fb->Width || dPriv->h != fb->Height)) { |
| _mesa_resize_framebuffer(ctx, fb, dPriv->w, dPriv->h); |
| /* if the driver needs the hw lock for ResizeBuffers, the drawable |
| might have changed again by now */ |
| assert(fb->Width == dPriv->w); |
| assert(fb->Height == dPriv->h); |
| } |
| } |
| |
| /* |
| * Note: the first match is returned, which is important for formats like |
| * __DRI_IMAGE_FORMAT_R8 which maps to both MESA_FORMAT_{R,L}_UNORM8 |
| */ |
| static const struct { |
| uint32_t image_format; |
| mesa_format mesa_format; |
| GLenum internal_format; |
| } format_mapping[] = { |
| { |
| .image_format = __DRI_IMAGE_FORMAT_RGB565, |
| .mesa_format = MESA_FORMAT_B5G6R5_UNORM, |
| .internal_format = GL_RGB565, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_ARGB1555, |
| .mesa_format = MESA_FORMAT_B5G5R5A1_UNORM, |
| .internal_format = GL_RGB5_A1, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_XRGB8888, |
| .mesa_format = MESA_FORMAT_B8G8R8X8_UNORM, |
| .internal_format = GL_RGBA8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_ABGR16161616F, |
| .mesa_format = MESA_FORMAT_RGBA_FLOAT16, |
| .internal_format = GL_RGBA16F, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_XBGR16161616F, |
| .mesa_format = MESA_FORMAT_RGBX_FLOAT16, |
| .internal_format = GL_RGBA16F, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_ARGB2101010, |
| .mesa_format = MESA_FORMAT_B10G10R10A2_UNORM, |
| .internal_format = GL_RGB10_A2, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_XRGB2101010, |
| .mesa_format = MESA_FORMAT_B10G10R10X2_UNORM, |
| .internal_format = GL_RGB10_A2, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_ABGR2101010, |
| .mesa_format = MESA_FORMAT_R10G10B10A2_UNORM, |
| .internal_format = GL_RGB10_A2, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_XBGR2101010, |
| .mesa_format = MESA_FORMAT_R10G10B10X2_UNORM, |
| .internal_format = GL_RGB10_A2, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_ARGB8888, |
| .mesa_format = MESA_FORMAT_B8G8R8A8_UNORM, |
| .internal_format = GL_RGBA8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_ABGR8888, |
| .mesa_format = MESA_FORMAT_R8G8B8A8_UNORM, |
| .internal_format = GL_RGBA8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_XBGR8888, |
| .mesa_format = MESA_FORMAT_R8G8B8X8_UNORM, |
| .internal_format = GL_RGB8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_R8, |
| .mesa_format = MESA_FORMAT_R_UNORM8, |
| .internal_format = GL_R8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_R8, |
| .mesa_format = MESA_FORMAT_L_UNORM8, |
| .internal_format = GL_R8, |
| }, |
| #if UTIL_ARCH_LITTLE_ENDIAN |
| { |
| .image_format = __DRI_IMAGE_FORMAT_GR88, |
| .mesa_format = MESA_FORMAT_RG_UNORM8, |
| .internal_format = GL_RG8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_GR88, |
| .mesa_format = MESA_FORMAT_LA_UNORM8, |
| .internal_format = GL_RG8, |
| }, |
| #endif |
| { |
| .image_format = __DRI_IMAGE_FORMAT_SABGR8, |
| .mesa_format = MESA_FORMAT_R8G8B8A8_SRGB, |
| .internal_format = GL_SRGB8_ALPHA8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_SARGB8, |
| .mesa_format = MESA_FORMAT_B8G8R8A8_SRGB, |
| .internal_format = GL_SRGB8_ALPHA8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_SXRGB8, |
| .mesa_format = MESA_FORMAT_B8G8R8X8_SRGB, |
| .internal_format = GL_SRGB8_ALPHA8, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_R16, |
| .mesa_format = MESA_FORMAT_R_UNORM16, |
| .internal_format = GL_R16, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_R16, |
| .mesa_format = MESA_FORMAT_L_UNORM16, |
| .internal_format = GL_R16, |
| }, |
| #if UTIL_ARCH_LITTLE_ENDIAN |
| { |
| .image_format = __DRI_IMAGE_FORMAT_GR1616, |
| .mesa_format = MESA_FORMAT_RG_UNORM16, |
| .internal_format = GL_RG16, |
| }, |
| { |
| .image_format = __DRI_IMAGE_FORMAT_GR1616, |
| .mesa_format = MESA_FORMAT_LA_UNORM16, |
| .internal_format = GL_RG16, |
| }, |
| #endif |
| }; |
| |
| uint32_t |
| driGLFormatToImageFormat(mesa_format format) |
| { |
| for (size_t i = 0; i < ARRAY_SIZE(format_mapping); i++) |
| if (format_mapping[i].mesa_format == format) |
| return format_mapping[i].image_format; |
| |
| return __DRI_IMAGE_FORMAT_NONE; |
| } |
| |
| uint32_t |
| driGLFormatToSizedInternalGLFormat(mesa_format format) |
| { |
| for (size_t i = 0; i < ARRAY_SIZE(format_mapping); i++) |
| if (format_mapping[i].mesa_format == format) |
| return format_mapping[i].internal_format; |
| |
| return GL_NONE; |
| } |
| |
| mesa_format |
| driImageFormatToGLFormat(uint32_t image_format) |
| { |
| for (size_t i = 0; i < ARRAY_SIZE(format_mapping); i++) |
| if (format_mapping[i].image_format == image_format) |
| return format_mapping[i].mesa_format; |
| |
| return MESA_FORMAT_NONE; |
| } |
| |
| /** Image driver interface */ |
| const __DRIimageDriverExtension driImageDriverExtension = { |
| .base = { __DRI_IMAGE_DRIVER, 1 }, |
| |
| .createNewScreen2 = driCreateNewScreen2, |
| .createNewDrawable = driCreateNewDrawable, |
| .getAPIMask = driGetAPIMask, |
| .createContextAttribs = driCreateContextAttribs, |
| }; |
| |
| /* swrast copy sub buffer entrypoint. */ |
| static void driCopySubBuffer(__DRIdrawable *pdp, int x, int y, |
| int w, int h) |
| { |
| assert(pdp->driScreenPriv->swrast_loader); |
| |
| pdp->driScreenPriv->driver->CopySubBuffer(pdp, x, y, w, h); |
| } |
| |
| /* for swrast only */ |
| const __DRIcopySubBufferExtension driCopySubBufferExtension = { |
| .base = { __DRI_COPY_SUB_BUFFER, 1 }, |
| |
| .copySubBuffer = driCopySubBuffer, |
| }; |
| |
| const __DRInoErrorExtension dri2NoErrorExtension = { |
| .base = { __DRI2_NO_ERROR, 1 }, |
| }; |
