| 0,0 → 1,629 |
|---|
| /* |
| * (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 <xf86drm.h> |
| #include "dri_util.h" |
| #include "utils.h" |
| #include "xmlpool.h" |
| #include "../glsl/glsl_parser_extras.h" |
| |
| PUBLIC 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; |
| |
| static const uint __dri2NConfigOptions = 1; |
| |
| /*****************************************************************/ |
| /** \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]; |
| } |
| } |
| |
| static __DRIscreen * |
| dri2CreateNewScreen(int scrn, int fd, |
| const __DRIextension **extensions, |
| const __DRIconfig ***driver_configs, void *data) |
| { |
| static const __DRIextension *emptyExtensionList[] = { NULL }; |
| __DRIscreen *psp; |
| drmVersionPtr version; |
| |
| psp = calloc(1, sizeof(*psp)); |
| if (!psp) |
| return NULL; |
| |
| setupLoaderExtensions(psp, extensions); |
| |
| version = drmGetVersion(fd); |
| if (version) { |
| psp->drm_version.major = version->version_major; |
| psp->drm_version.minor = version->version_minor; |
| psp->drm_version.patch = version->version_patchlevel; |
| drmFreeVersion(version); |
| } |
| |
| psp->loaderPrivate = data; |
| |
| psp->extensions = emptyExtensionList; |
| psp->fd = fd; |
| psp->myNum = scrn; |
| |
| psp->api_mask = (1 << __DRI_API_OPENGL); |
| |
| *driver_configs = driDriverAPI.InitScreen(psp); |
| if (*driver_configs == NULL) { |
| free(psp); |
| return NULL; |
| } |
| |
| driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions, __dri2NConfigOptions); |
| driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum, "dri2"); |
| |
| return psp; |
| } |
| |
| /** |
| * 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. |
| */ |
| |
| _mesa_destroy_shader_compiler(); |
| |
| driDriverAPI.DestroyScreen(psp); |
| |
| driDestroyOptionCache(&psp->optionCache); |
| driDestroyOptionInfo(&psp->optionInfo); |
| |
| free(psp); |
| } |
| } |
| |
| static const __DRIextension **driGetExtensions(__DRIscreen *psp) |
| { |
| return psp->extensions; |
| } |
| |
| /*@}*/ |
| |
| |
| /*****************************************************************/ |
| /** \name Context handling functions */ |
| /*****************************************************************/ |
| /*@{*/ |
| |
| static __DRIcontext * |
| dri2CreateContextAttribs(__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; |
| unsigned major_version = 1; |
| unsigned minor_version = 0; |
| uint32_t flags = 0; |
| |
| 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: |
| major_version = attribs[i * 2 + 1]; |
| break; |
| case __DRI_CTX_ATTRIB_MINOR_VERSION: |
| minor_version = attribs[i * 2 + 1]; |
| break; |
| case __DRI_CTX_ATTRIB_FLAGS: |
| flags = attribs[i * 2 + 1]; |
| 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; |
| } |
| } |
| |
| /* Mesa does not support the GL_ARB_compatibilty extension or the |
| * compatibility profile. This means that we treat a API_OPENGL_COMPAT 3.1 as |
| * API_OPENGL_CORE and reject API_OPENGL_COMPAT 3.2+. |
| */ |
| if (mesa_api == API_OPENGL_COMPAT && major_version == 3 && minor_version == 1) |
| mesa_api = API_OPENGL_CORE; |
| |
| if (mesa_api == API_OPENGL_COMPAT |
| && ((major_version > 3) |
| || (major_version == 3 && minor_version >= 2))) { |
| *error = __DRI_CTX_ERROR_BAD_API; |
| return NULL; |
| } |
| |
| /* The EGL_KHR_create_context spec says: |
| * |
| * "Flags are only defined for OpenGL context creation, and specifying |
| * a flags value other than zero for other types of contexts, |
| * including OpenGL ES contexts, will generate an error." |
| * |
| * The GLX_EXT_create_context_es2_profile specification doesn't say |
| * anything specific about this case. However, none of the known flags |
| * have any meaning in an ES context, so this seems safe. |
| */ |
| if (mesa_api != API_OPENGL_COMPAT |
| && mesa_api != API_OPENGL_CORE |
| && flags != 0) { |
| *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 ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) { |
| mesa_api = API_OPENGL_CORE; |
| } |
| |
| if ((flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE)) |
| != 0) { |
| *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; |
| 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 (!driDriverAPI.CreateContext(mesa_api, modes, context, |
| major_version, minor_version, |
| flags, error, shareCtx) ) { |
| free(context); |
| return NULL; |
| } |
| |
| *error = __DRI_CTX_ERROR_SUCCESS; |
| return context; |
| } |
| |
| static __DRIcontext * |
| dri2CreateNewContextForAPI(__DRIscreen *screen, int api, |
| const __DRIconfig *config, |
| __DRIcontext *shared, void *data) |
| { |
| unsigned error; |
| |
| return dri2CreateContextAttribs(screen, api, config, shared, 0, NULL, |
| &error, data); |
| } |
| |
| static __DRIcontext * |
| dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config, |
| __DRIcontext *shared, void *data) |
| { |
| return dri2CreateNewContextForAPI(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) { |
| driDriverAPI.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 driDriverAPI.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; |
| |
| pdp = pcp->driDrawablePriv; |
| prp = pcp->driReadablePriv; |
| |
| /* already unbound */ |
| if (!pdp && !prp) |
| return GL_TRUE; |
| |
| driDriverAPI.UnbindContext(pcp); |
| |
| 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); |
| } |
| |
| /* XXX this is disabled so that if we call SwapBuffers on an unbound |
| * window we can determine the last context bound to the window and |
| * use that context's lock. (BrianP, 2-Dec-2000) |
| */ |
| 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; |
| |
| driDriverAPI.DestroyBuffer(pdp); |
| free(pdp); |
| } |
| } |
| |
| static __DRIdrawable * |
| dri2CreateNewDrawable(__DRIscreen *screen, |
| const __DRIconfig *config, |
| void *data) |
| { |
| __DRIdrawable *pdraw; |
| |
| 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 (!driDriverAPI.CreateBuffer(screen, pdraw, &config->modes, GL_FALSE)) { |
| free(pdraw); |
| return NULL; |
| } |
| |
| pdraw->dri2.stamp = pdraw->lastStamp + 1; |
| |
| return pdraw; |
| } |
| |
| static void |
| driDestroyDrawable(__DRIdrawable *pdp) |
| { |
| dri_put_drawable(pdp); |
| } |
| |
| static __DRIbuffer * |
| dri2AllocateBuffer(__DRIscreen *screen, |
| unsigned int attachment, unsigned int format, |
| int width, int height) |
| { |
| return driDriverAPI.AllocateBuffer(screen, attachment, format, |
| width, height); |
| } |
| |
| static void |
| dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer) |
| { |
| driDriverAPI.ReleaseBuffer(screen, buffer); |
| } |
| |
| |
| static int |
| dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *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, GLint *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, GLfloat *val) |
| { |
| if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT)) |
| return -1; |
| |
| *val = driQueryOptionf(&screen->optionCache, var); |
| |
| return 0; |
| } |
| |
| static unsigned int |
| dri2GetAPIMask(__DRIscreen *screen) |
| { |
| return screen->api_mask; |
| } |
| |
| |
| /** Core interface */ |
| const __DRIcoreExtension driCoreExtension = { |
| .base = { __DRI_CORE, __DRI_CORE_VERSION }, |
| |
| .createNewScreen = NULL, |
| .destroyScreen = driDestroyScreen, |
| .getExtensions = driGetExtensions, |
| .getConfigAttrib = driGetConfigAttrib, |
| .indexConfigAttrib = driIndexConfigAttrib, |
| .createNewDrawable = NULL, |
| .destroyDrawable = driDestroyDrawable, |
| .swapBuffers = NULL, |
| .createNewContext = NULL, |
| .copyContext = driCopyContext, |
| .destroyContext = driDestroyContext, |
| .bindContext = driBindContext, |
| .unbindContext = driUnbindContext |
| }; |
| |
| /** DRI2 interface */ |
| const __DRIdri2Extension driDRI2Extension = { |
| .base = { __DRI_DRI2, 3 }, |
| |
| .createNewScreen = dri2CreateNewScreen, |
| .createNewDrawable = dri2CreateNewDrawable, |
| .createNewContext = dri2CreateNewContext, |
| .getAPIMask = dri2GetAPIMask, |
| .createNewContextForAPI = dri2CreateNewContextForAPI, |
| .allocateBuffer = dri2AllocateBuffer, |
| .releaseBuffer = dri2ReleaseBuffer, |
| .createContextAttribs = dri2CreateContextAttribs |
| }; |
| |
| const __DRI2configQueryExtension dri2ConfigQueryExtension = { |
| .base = { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION }, |
| |
| .configQueryb = dri2ConfigQueryb, |
| .configQueryi = dri2ConfigQueryi, |
| .configQueryf = dri2ConfigQueryf, |
| }; |
| |
| 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)) { |
| ctx->Driver.ResizeBuffers(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); |
| } |
| } |