+/*
+ * (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.
*/
-#include <assert.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <stdio.h>
-
-#ifndef MAP_FAILED
-#define MAP_FAILED ((void *)-1)
+#include <stdbool.h>
+#ifndef __NOT_HAVE_DRM_H
+#include <xf86drm.h>
#endif
-
-#include "main/imports.h"
-#define None 0
-
#include "dri_util.h"
-#include "drm_sarea.h"
#include "utils.h"
-#include "vblank.h"
#include "xmlpool.h"
+#include "../glsl/glsl_parser_extras.h"
+#include "main/mtypes.h"
+#include "main/version.h"
+#include "main/macros.h"
PUBLIC const char __dri2ConfigOptions[] =
DRI_CONF_BEGIN
DRI_CONF_SECTION_END
DRI_CONF_END;
-static const uint __dri2NConfigOptions = 1;
-
-#ifndef GLX_OML_sync_control
-typedef GLboolean ( * PFNGLXGETMSCRATEOMLPROC) (__DRIdrawable *drawable, int32_t *numerator, int32_t *denominator);
-#endif
-
-static void dri_get_drawable(__DRIdrawable *pdp);
-static void dri_put_drawable(__DRIdrawable *pdp);
-
-/**
- * This is just a token extension used to signal that the driver
- * supports setting a read drawable.
- */
-const __DRIextension driReadDrawableExtension = {
- __DRI_READ_DRAWABLE, __DRI_READ_DRAWABLE_VERSION
-};
+/*****************************************************************/
+/** \name Screen handling functions */
+/*****************************************************************/
+/*@{*/
-GLint
-driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 )
+static void
+setupLoaderExtensions(__DRIscreen *psp,
+ const __DRIextension **extensions)
{
- if (rect2.x1 > rect1.x1) rect1.x1 = rect2.x1;
- if (rect2.x2 < rect1.x2) rect1.x2 = rect2.x2;
- if (rect2.y1 > rect1.y1) rect1.y1 = rect2.y1;
- if (rect2.y2 < rect1.y2) rect1.y2 = rect2.y2;
-
- if (rect1.x1 > rect1.x2 || rect1.y1 > rect1.y2) return 0;
+ int i;
- return (rect1.x2 - rect1.x1) * (rect1.y2 - rect1.y1);
+ 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_SWRAST_LOADER) == 0)
+ psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i];
+ }
}
-/*****************************************************************/
-/** \name Context (un)binding functions */
-/*****************************************************************/
-/*@{*/
-
/**
- * Unbind context.
- *
- * \param scrn the screen.
- * \param gc context.
+ * This is the first entrypoint in the driver called by the DRI driver loader
+ * after dlopen()ing it.
*
- * \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.
+ * It's used to create global state for the driver across contexts on the same
+ * Display.
*/
-static int driUnbindContext(__DRIcontext *pcp)
+static __DRIscreen *
+dri2CreateNewScreen(int scrn, int fd,
+ const __DRIextension **extensions,
+ const __DRIconfig ***driver_configs, void *data)
{
+ static const __DRIextension *emptyExtensionList[] = { NULL };
__DRIscreen *psp;
- __DRIdrawable *pdp;
- __DRIdrawable *prp;
-
- /*
- ** Assume error checking is done properly in glXMakeCurrent before
- ** calling driUnbindContext.
- */
- if (pcp == NULL)
- return GL_FALSE;
+ psp = calloc(1, sizeof(*psp));
+ if (!psp)
+ return NULL;
- psp = pcp->driScreenPriv;
- pdp = pcp->driDrawablePriv;
- prp = pcp->driReadablePriv;
+ psp->driver = &driDriverAPI;
- /* already unbound */
- if (!pdp && !prp)
- return GL_TRUE;
- /* Let driver unbind drawable from context */
- (*psp->DriverAPI.UnbindContext)(pcp);
+ setupLoaderExtensions(psp, extensions);
- assert(pdp);
- if (pdp->refcount == 0) {
- /* ERROR!!! */
- return GL_FALSE;
+#ifndef __NOT_HAVE_DRM_H
+ if (fd != -1) {
+ drmVersionPtr 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);
+ }
}
+#endif
- dri_put_drawable(pdp);
+ psp->loaderPrivate = data;
- if (prp != pdp) {
- if (prp->refcount == 0) {
- /* ERROR!!! */
- return GL_FALSE;
- }
+ psp->extensions = emptyExtensionList;
+ psp->fd = fd;
+ psp->myNum = scrn;
- dri_put_drawable(prp);
+ *driver_configs = psp->driver->InitScreen(psp);
+ if (*driver_configs == NULL) {
+ free(psp);
+ return NULL;
}
-
- /* 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 = pcp->driReadablePriv = NULL;
-
- return GL_TRUE;
-}
-
-/**
- * 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)
-{
- __DRIscreen *psp = NULL;
-
- /* Bind the drawable to the context */
-
- if (pcp) {
- psp = pcp->driScreenPriv;
- pcp->driDrawablePriv = pdp;
- pcp->driReadablePriv = prp;
- if (pdp) {
- pdp->driContextPriv = pcp;
- dri_get_drawable(pdp);
- }
- if ( prp && pdp != prp ) {
- dri_get_drawable(prp);
- }
+ int gl_version_override = _mesa_get_gl_version_override();
+ if (gl_version_override >= 31) {
+ psp->max_gl_core_version = MAX2(psp->max_gl_core_version,
+ gl_version_override);
+ } else {
+ psp->max_gl_compat_version = MAX2(psp->max_gl_compat_version,
+ gl_version_override);
}
- /*
- ** Now that we have a context associated with this drawable, we can
- ** initialize the drawable information if has not been done before.
- */
+ 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);
- assert(psp);
- if (!psp->dri2.enabled) {
- if (pdp && !pdp->pStamp) {
- DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
- __driUtilUpdateDrawableInfo(pdp);
- DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
- }
- if (prp && pdp != prp && !prp->pStamp) {
- DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
- __driUtilUpdateDrawableInfo(prp);
- DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
- }
- }
+ driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions);
+ driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum, "dri2");
- /* Call device-specific MakeCurrent */
- return (*psp->DriverAPI.MakeCurrent)(pcp, pdp, prp);
+ return psp;
}
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Drawable handling functions */
-/*****************************************************************/
-/*@{*/
+/** swrast driver createNewScreen entrypoint. */
+static __DRIscreen *
+driCreateNewScreen(int scrn, const __DRIextension **extensions,
+ const __DRIconfig ***driver_configs, void *data)
+{
+ return dri2CreateNewScreen(scrn, -1, extensions, driver_configs, data);
+}
/**
- * Update private drawable information.
- *
- * \param pdp pointer to the private drawable information to update.
+ * Destroy the per-screen private information.
*
- * This function basically updates the __DRIdrawable struct's
- * cliprect information by calling \c __DRIinterfaceMethods::getDrawableInfo.
- * This is usually called by the DRI_VALIDATE_DRAWABLE_INFO macro which
- * compares the __DRIdrwablePrivate pStamp and lastStamp values. If
- * the values are different that means we have to update the clipping
- * info.
+ * \internal
+ * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls
+ * drmClose(), and finally frees \p screenPrivate.
*/
-void
-__driUtilUpdateDrawableInfo(__DRIdrawable *pdp)
+static void driDestroyScreen(__DRIscreen *psp)
{
- __DRIscreen *psp = pdp->driScreenPriv;
- __DRIcontext *pcp = pdp->driContextPriv;
-
- if (!pcp
- || ((pdp != pcp->driDrawablePriv) && (pdp != pcp->driReadablePriv))) {
- /* ERROR!!!
- * ...but we must ignore it. There can be many contexts bound to a
- * drawable.
+ 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.
*/
- }
- if (pdp->pClipRects) {
- free(pdp->pClipRects);
- pdp->pClipRects = NULL;
- }
+ _mesa_destroy_shader_compiler();
- if (pdp->pBackClipRects) {
- free(pdp->pBackClipRects);
- pdp->pBackClipRects = NULL;
- }
+ psp->driver->DestroyScreen(psp);
- DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-
- if (! (*psp->getDrawableInfo->getDrawableInfo)(pdp,
- &pdp->index, &pdp->lastStamp,
- &pdp->x, &pdp->y, &pdp->w, &pdp->h,
- &pdp->numClipRects, &pdp->pClipRects,
- &pdp->backX,
- &pdp->backY,
- &pdp->numBackClipRects,
- &pdp->pBackClipRects,
- pdp->loaderPrivate)) {
- /* Error -- eg the window may have been destroyed. Keep going
- * with no cliprects.
- */
- pdp->pStamp = &pdp->lastStamp; /* prevent endless loop */
- pdp->numClipRects = 0;
- pdp->pClipRects = NULL;
- pdp->numBackClipRects = 0;
- pdp->pBackClipRects = NULL;
+ driDestroyOptionCache(&psp->optionCache);
+ driDestroyOptionInfo(&psp->optionInfo);
+
+ free(psp);
}
- else
- pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);
+}
- DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+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 GLX callbacks */
+/** \name Context handling functions */
/*****************************************************************/
/*@{*/
-static void driReportDamage(__DRIdrawable *pdp,
- struct drm_clip_rect *pClipRects, int numClipRects)
-{
- __DRIscreen *psp = pdp->driScreenPriv;
-
- /* Check that we actually have the new damage report method */
- if (psp->damage) {
- /* Report the damage. Currently, all our drivers draw
- * directly to the front buffer, so we report the damage there
- * rather than to the backing storein (if any).
- */
- (*psp->damage->reportDamage)(pdp,
- pdp->x, pdp->y,
- pClipRects, numClipRects,
- GL_TRUE, pdp->loaderPrivate);
+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;
+ }
-/**
- * Swap buffers.
- *
- * \param drawablePrivate opaque pointer to the per-drawable private info.
- *
- * \internal
- * This function calls __DRIdrawable::swapBuffers.
- *
- * Is called directly from glXSwapBuffers().
- */
-static void driSwapBuffers(__DRIdrawable *dPriv)
-{
- __DRIscreen *psp = dPriv->driScreenPriv;
- drm_clip_rect_t *rects;
- int i;
+ 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;
+ }
+ }
- psp->DriverAPI.SwapBuffers(dPriv);
+ /* 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 (!dPriv->numClipRects)
- return;
+ if (mesa_api == API_OPENGL_COMPAT
+ && ((major_version > 3)
+ || (major_version == 3 && minor_version >= 2))) {
+ *error = __DRI_CTX_ERROR_BAD_API;
+ return NULL;
+ }
- rects = malloc(sizeof(*rects) * dPriv->numClipRects);
+ /* 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;
+ }
- if (!rects)
- return;
+ /* 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;
+ }
- for (i = 0; i < dPriv->numClipRects; i++) {
- rects[i].x1 = dPriv->pClipRects[i].x1 - dPriv->x;
- rects[i].y1 = dPriv->pClipRects[i].y1 - dPriv->y;
- rects[i].x2 = dPriv->pClipRects[i].x2 - dPriv->x;
- rects[i].y2 = dPriv->pClipRects[i].y2 - dPriv->y;
+ if ((flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE))
+ != 0) {
+ *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
+ return NULL;
}
- driReportDamage(dPriv, rects, dPriv->numClipRects);
- free(rects);
-}
+ if (!validate_context_version(screen, mesa_api,
+ major_version, minor_version, error))
+ return NULL;
-static int driDrawableGetMSC( __DRIscreen *sPriv, __DRIdrawable *dPriv,
- int64_t *msc )
-{
- return sPriv->DriverAPI.GetDrawableMSC(sPriv, dPriv, msc);
-}
+ context = calloc(1, sizeof *context);
+ if (!context) {
+ *error = __DRI_CTX_ERROR_NO_MEMORY;
+ return NULL;
+ }
+ context->loaderPrivate = data;
-static int driWaitForMSC(__DRIdrawable *dPriv, int64_t target_msc,
- int64_t divisor, int64_t remainder,
- int64_t * msc, int64_t * sbc)
-{
- __DRIswapInfo sInfo;
- int status;
+ context->driScreenPriv = screen;
+ context->driDrawablePriv = NULL;
+ context->driReadablePriv = NULL;
- status = dPriv->driScreenPriv->DriverAPI.WaitForMSC( dPriv, target_msc,
- divisor, remainder,
- msc );
+ if (!screen->driver->CreateContext(mesa_api, modes, context,
+ major_version, minor_version,
+ flags, error, shareCtx) ) {
+ free(context);
+ return NULL;
+ }
- /* GetSwapInfo() may not be provided by the driver if GLX_SGI_video_sync
- * is supported but GLX_OML_sync_control is not. Therefore, don't return
- * an error value if GetSwapInfo() is not implemented.
- */
- if ( status == 0
- && dPriv->driScreenPriv->DriverAPI.GetSwapInfo ) {
- status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );
- *sbc = sInfo.swap_count;
+ struct gl_context *ctx = context->driverPrivate;
+ if ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0)
+ ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;
+ if ((flags & __DRI_CTX_FLAG_DEBUG) != 0) {
+ ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT;
+ ctx->Debug.DebugOutput = GL_TRUE;
}
- return status;
+ *error = __DRI_CTX_ERROR_SUCCESS;
+ return context;
}
-
-const __DRImediaStreamCounterExtension driMediaStreamCounterExtension = {
- { __DRI_MEDIA_STREAM_COUNTER, __DRI_MEDIA_STREAM_COUNTER_VERSION },
- driWaitForMSC,
- driDrawableGetMSC,
-};
-
-
-static void driCopySubBuffer(__DRIdrawable *dPriv,
- int x, int y, int w, int h)
+static __DRIcontext *
+dri2CreateNewContextForAPI(__DRIscreen *screen, int api,
+ const __DRIconfig *config,
+ __DRIcontext *shared, void *data)
{
- drm_clip_rect_t rect;
+ unsigned error;
- rect.x1 = x;
- rect.y1 = dPriv->h - y - h;
- rect.x2 = x + w;
- rect.y2 = rect.y1 + h;
- driReportDamage(dPriv, &rect, 1);
-
- dPriv->driScreenPriv->DriverAPI.CopySubBuffer(dPriv, x, y, w, h);
+ return dri2CreateContextAttribs(screen, api, config, shared, 0, NULL,
+ &error, data);
}
-const __DRIcopySubBufferExtension driCopySubBufferExtension = {
- { __DRI_COPY_SUB_BUFFER, __DRI_COPY_SUB_BUFFER_VERSION },
- driCopySubBuffer
-};
+static __DRIcontext *
+dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
+ __DRIcontext *shared, void *data)
+{
+ return dri2CreateNewContextForAPI(screen, __DRI_API_OPENGL,
+ config, shared, data);
+}
-static void driSetSwapInterval(__DRIdrawable *dPriv, unsigned int interval)
+/**
+ * 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)
{
- dPriv->swap_interval = interval;
+ if (pcp) {
+ pcp->driScreenPriv->driver->DestroyContext(pcp);
+ free(pcp);
+ }
}
-static unsigned int driGetSwapInterval(__DRIdrawable *dPriv)
+static int
+driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)
{
- return dPriv->swap_interval;
+ (void) dest;
+ (void) src;
+ (void) mask;
+ return GL_FALSE;
}
-const __DRIswapControlExtension driSwapControlExtension = {
- { __DRI_SWAP_CONTROL, __DRI_SWAP_CONTROL_VERSION },
- driSetSwapInterval,
- driGetSwapInterval
-};
+/*@}*/
+
+
+/*****************************************************************/
+/** \name Context (un)binding functions */
+/*****************************************************************/
+/*@{*/
+static void dri_get_drawable(__DRIdrawable *pdp);
+static void dri_put_drawable(__DRIdrawable *pdp);
/**
- * This is called via __DRIscreenRec's createNewDrawable pointer.
+ * 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 __DRIdrawable *
-driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config,
- drm_drawable_t hwDrawable, int renderType,
- const int *attrs, void *data)
+static int driBindContext(__DRIcontext *pcp,
+ __DRIdrawable *pdp,
+ __DRIdrawable *prp)
{
- __DRIdrawable *pdp;
+ /*
+ ** Assume error checking is done properly in glXMakeCurrent before
+ ** calling driUnbindContext.
+ */
- /* Since pbuffers are not yet supported, no drawable attributes are
- * supported either.
- */
- (void) attrs;
+ if (!pcp)
+ return GL_FALSE;
- pdp = malloc(sizeof *pdp);
- if (!pdp) {
- return NULL;
+ /* Bind the drawable to the context */
+ pcp->driDrawablePriv = pdp;
+ pcp->driReadablePriv = prp;
+ if (pdp) {
+ pdp->driContextPriv = pcp;
+ dri_get_drawable(pdp);
}
-
- pdp->loaderPrivate = data;
- pdp->hHWDrawable = hwDrawable;
- pdp->refcount = 1;
- pdp->pStamp = NULL;
- pdp->lastStamp = 0;
- pdp->index = 0;
- pdp->x = 0;
- pdp->y = 0;
- pdp->w = 0;
- pdp->h = 0;
- pdp->numClipRects = 0;
- pdp->numBackClipRects = 0;
- pdp->pClipRects = NULL;
- pdp->pBackClipRects = NULL;
- pdp->vblSeq = 0;
- pdp->vblFlags = 0;
-
- pdp->driScreenPriv = psp;
-
- if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, &config->modes,
- renderType == GLX_PIXMAP_BIT)) {
- free(pdp);
- return NULL;
+ if (prp && pdp != prp) {
+ dri_get_drawable(prp);
}
- pdp->msc_base = 0;
-
- /* This special default value is replaced with the configured
- * default value when the drawable is first bound to a direct
- * rendering context.
- */
- pdp->swap_interval = (unsigned)-1;
-
- return pdp;
+ 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;
-static __DRIdrawable *
-dri2CreateNewDrawable(__DRIscreen *screen,
- const __DRIconfig *config,
- void *loaderPrivate)
-{
- __DRIdrawable *pdraw;
-
- pdraw = driCreateNewDrawable(screen, config, 0, 0, NULL, loaderPrivate);
- if (!pdraw)
- return NULL;
-
- pdraw->pClipRects = &pdraw->dri2.clipRect;
- pdraw->pBackClipRects = &pdraw->dri2.clipRect;
-
- pdraw->pStamp = &pdraw->dri2.stamp;
- *pdraw->pStamp = pdraw->lastStamp + 1;
+ /*
+ ** Assume error checking is done properly in glXMakeCurrent before
+ ** calling driUnbindContext.
+ */
- return pdraw;
-}
+ if (pcp == NULL)
+ return GL_FALSE;
-static int
-dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *val)
-{
- if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))
- return -1;
+ pdp = pcp->driDrawablePriv;
+ prp = pcp->driReadablePriv;
- *val = driQueryOptionb(&screen->optionCache, var);
+ /* already unbound */
+ if (!pdp && !prp)
+ return GL_TRUE;
- return 0;
-}
+ pcp->driScreenPriv->driver->UnbindContext(pcp);
-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;
+ assert(pdp);
+ if (pdp->refcount == 0) {
+ /* ERROR!!! */
+ return GL_FALSE;
+ }
- *val = driQueryOptioni(&screen->optionCache, var);
+ dri_put_drawable(pdp);
- return 0;
-}
+ if (prp != pdp) {
+ if (prp->refcount == 0) {
+ /* ERROR!!! */
+ return GL_FALSE;
+ }
-static int
-dri2ConfigQueryf(__DRIscreen *screen, const char *var, GLfloat *val)
-{
- if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))
- return -1;
+ dri_put_drawable(prp);
+ }
- *val = driQueryOptionf(&screen->optionCache, var);
+ pcp->driDrawablePriv = NULL;
+ pcp->driReadablePriv = NULL;
- return 0;
+ return GL_TRUE;
}
+/*@}*/
+
static void dri_get_drawable(__DRIdrawable *pdp)
{
pdp->refcount++;
}
-
+
static void dri_put_drawable(__DRIdrawable *pdp)
{
- __DRIscreen *psp;
-
if (pdp) {
pdp->refcount--;
if (pdp->refcount)
return;
- psp = pdp->driScreenPriv;
- (*psp->DriverAPI.DestroyBuffer)(pdp);
- if (pdp->pClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {
- free(pdp->pClipRects);
- pdp->pClipRects = NULL;
- }
- if (pdp->pBackClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {
- free(pdp->pBackClipRects);
- pdp->pBackClipRects = NULL;
- }
+ pdp->driScreenPriv->driver->DestroyBuffer(pdp);
free(pdp);
}
}
-static void
-driDestroyDrawable(__DRIdrawable *pdp)
-{
- dri_put_drawable(pdp);
-}
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Context handling functions */
-/*****************************************************************/
-/*@{*/
-
-/**
- * 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->DriverAPI.DestroyContext)(pcp);
- free(pcp);
- }
-}
-
-
-/**
- * Create the per-drawable private driver information.
- *
- * \param render_type Type of rendering target. \c GLX_RGBA is the only
- * type likely to ever be supported for direct-rendering.
- * \param shared Context with which to share textures, etc. or NULL
- *
- * \returns An opaque pointer to the per-context private information on
- * success, or \c NULL on failure.
- *
- * \internal
- * This function allocates and fills a __DRIcontextRec structure. It
- * performs some device independent initialization and passes all the
- * relevent information to __DriverAPIRec::CreateContext to create the
- * context.
- *
- */
-static __DRIcontext *
-driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config,
- int render_type, __DRIcontext *shared,
- drm_context_t hwContext, void *data)
+static __DRIdrawable *
+dri2CreateNewDrawable(__DRIscreen *screen,
+ const __DRIconfig *config,
+ void *data)
{
- __DRIcontext *pcp;
- void * const shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
+ __DRIdrawable *pdraw;
- pcp = malloc(sizeof *pcp);
- if (!pcp)
+ pdraw = malloc(sizeof *pdraw);
+ if (!pdraw)
return NULL;
- pcp->driScreenPriv = psp;
- pcp->driDrawablePriv = NULL;
- pcp->loaderPrivate = data;
-
- pcp->dri2.draw_stamp = 0;
- pcp->dri2.read_stamp = 0;
+ pdraw->loaderPrivate = data;
- pcp->hHWContext = hwContext;
+ pdraw->driScreenPriv = screen;
+ pdraw->driContextPriv = NULL;
+ pdraw->refcount = 0;
+ pdraw->lastStamp = 0;
+ pdraw->w = 0;
+ pdraw->h = 0;
- if ( !(*psp->DriverAPI.CreateContext)(&config->modes, pcp, shareCtx) ) {
- free(pcp);
- return NULL;
- }
+ dri_get_drawable(pdraw);
- return pcp;
-}
+ if (!screen->driver->CreateBuffer(screen, pdraw, &config->modes,
+ GL_FALSE)) {
+ free(pdraw);
+ return NULL;
+ }
+ pdraw->dri2.stamp = pdraw->lastStamp + 1;
-static __DRIcontext *
-dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
- __DRIcontext *shared, void *data)
-{
- return driCreateNewContext(screen, config, 0, shared, 0, data);
+ return pdraw;
}
-
-static int
-driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)
+static void
+driDestroyDrawable(__DRIdrawable *pdp)
{
- return GL_FALSE;
+ dri_put_drawable(pdp);
}
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Screen handling functions */
-/*****************************************************************/
-/*@{*/
-
-/**
- * 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)
+static __DRIbuffer *
+dri2AllocateBuffer(__DRIscreen *screen,
+ unsigned int attachment, unsigned int format,
+ int width, int height)
{
- 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.
- */
-
- if (psp->DriverAPI.DestroyScreen)
- (*psp->DriverAPI.DestroyScreen)(psp);
-
- if (!psp->dri2.enabled) {
- (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
- (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
- (void)drmCloseOnce(psp->fd);
- }
-
- free(psp);
- }
+ return screen->driver->AllocateBuffer(screen, attachment, format,
+ width, height);
}
static void
-setupLoaderExtensions(__DRIscreen *psp,
- const __DRIextension **extensions)
+dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
{
- int i;
-
- for (i = 0; extensions[i]; i++) {
- if (strcmp(extensions[i]->name, __DRI_GET_DRAWABLE_INFO) == 0)
- psp->getDrawableInfo = (__DRIgetDrawableInfoExtension *) extensions[i];
- if (strcmp(extensions[i]->name, __DRI_DAMAGE) == 0)
- psp->damage = (__DRIdamageExtension *) extensions[i];
- if (strcmp(extensions[i]->name, __DRI_SYSTEM_TIME) == 0)
- psp->systemTime = (__DRIsystemTimeExtension *) extensions[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];
- }
+ screen->driver->ReleaseBuffer(screen, buffer);
}
-/**
- * This is the bootstrap function for the driver. libGL supplies all of the
- * requisite information about the system, and the driver initializes itself.
- * This routine also fills in the linked list pointed to by \c driver_modes
- * with the \c __GLcontextModes that the driver can support for windows or
- * pbuffers.
- *
- * For legacy DRI.
- *
- * \param scrn Index of the screen
- * \param ddx_version Version of the 2D DDX. This may not be meaningful for
- * all drivers.
- * \param dri_version Version of the "server-side" DRI.
- * \param drm_version Version of the kernel DRM.
- * \param frame_buffer Data describing the location and layout of the
- * framebuffer.
- * \param pSAREA Pointer to the SAREA.
- * \param fd Device handle for the DRM.
- * \param extensions ??
- * \param driver_modes Returns modes suppoted by the driver
- * \param loaderPrivate ??
- *
- * \note There is no need to check the minimum API version in this
- * function. Since the name of this function is versioned, it is
- * impossible for a loader that is too old to even load this driver.
- */
-static __DRIscreen *
-driCreateNewScreen(int scrn,
- const __DRIversion *ddx_version,
- const __DRIversion *dri_version,
- const __DRIversion *drm_version,
- const __DRIframebuffer *frame_buffer,
- drmAddress pSAREA, int fd,
- const __DRIextension **extensions,
- const __DRIconfig ***driver_modes,
- void *loaderPrivate)
-{
- static const __DRIextension *emptyExtensionList[] = { NULL };
- __DRIscreen *psp;
- psp = calloc(1, sizeof *psp);
- if (!psp)
- return NULL;
+static int
+dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *val)
+{
+ if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))
+ return -1;
- setupLoaderExtensions(psp, extensions);
+ *val = driQueryOptionb(&screen->optionCache, var);
- /*
- ** NOT_DONE: This is used by the X server to detect when the client
- ** has died while holding the drawable lock. The client sets the
- ** drawable lock to this value.
- */
- psp->drawLockID = 1;
+ return 0;
+}
- psp->drm_version = *drm_version;
- psp->ddx_version = *ddx_version;
- psp->dri_version = *dri_version;
+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;
- psp->pSAREA = pSAREA;
- psp->lock = (drmLock *) &psp->pSAREA->lock;
+ *val = driQueryOptioni(&screen->optionCache, var);
- psp->pFB = frame_buffer->base;
- psp->fbSize = frame_buffer->size;
- psp->fbStride = frame_buffer->stride;
- psp->fbWidth = frame_buffer->width;
- psp->fbHeight = frame_buffer->height;
- psp->devPrivSize = frame_buffer->dev_priv_size;
- psp->pDevPriv = frame_buffer->dev_priv;
- psp->fbBPP = psp->fbStride * 8 / frame_buffer->width;
+ return 0;
+}
- psp->extensions = emptyExtensionList;
- psp->fd = fd;
- psp->myNum = scrn;
- psp->dri2.enabled = GL_FALSE;
+static int
+dri2ConfigQueryf(__DRIscreen *screen, const char *var, GLfloat *val)
+{
+ if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))
+ return -1;
- psp->DriverAPI = driDriverAPI;
+ *val = driQueryOptionf(&screen->optionCache, var);
- *driver_modes = driDriverAPI.InitScreen(psp);
- if (*driver_modes == NULL) {
- free(psp);
- return NULL;
- }
+ return 0;
+}
- return psp;
+static unsigned int
+dri2GetAPIMask(__DRIscreen *screen)
+{
+ return screen->api_mask;
}
/**
- * DRI2
+ * swrast swapbuffers entrypoint.
+ *
+ * DRI2 implements this inside the loader with only flushes handled by the
+ * driver.
*/
-static __DRIscreen *
-dri2CreateNewScreen(int scrn, int fd,
- const __DRIextension **extensions,
- const __DRIconfig ***driver_configs, void *data)
+static void
+driSwapBuffers(__DRIdrawable *pdp)
{
- static const __DRIextension *emptyExtensionList[] = { NULL };
- __DRIscreen *psp;
- drmVersionPtr version;
- driOptionCache options;
+ assert(pdp->driScreenPriv->swrast_loader);
- if (driDriverAPI.InitScreen2 == NULL)
- return NULL;
-
- 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->extensions = emptyExtensionList;
- psp->fd = fd;
- psp->myNum = scrn;
- psp->dri2.enabled = GL_TRUE;
-
- psp->DriverAPI = driDriverAPI;
- *driver_configs = driDriverAPI.InitScreen2(psp);
- if (*driver_configs == NULL) {
- free(psp);
- return NULL;
- }
-
- psp->DriverAPI = driDriverAPI;
-
- driParseOptionInfo(&options, __dri2ConfigOptions, __dri2NConfigOptions);
- driParseConfigFiles(&psp->optionCache, &options, psp->myNum, "dri2");
-
- return psp;
-}
-
-static const __DRIextension **driGetExtensions(__DRIscreen *psp)
-{
- return psp->extensions;
+ pdp->driScreenPriv->driver->SwapBuffers(pdp);
}
/** Core interface */
const __DRIcoreExtension driCoreExtension = {
- { __DRI_CORE, __DRI_CORE_VERSION },
- NULL,
- driDestroyScreen,
- driGetExtensions,
- driGetConfigAttrib,
- driIndexConfigAttrib,
- NULL,
- driDestroyDrawable,
- driSwapBuffers,
- NULL,
- driCopyContext,
- driDestroyContext,
- driBindContext,
- driUnbindContext
-};
-
-/** Legacy DRI interface */
-const __DRIlegacyExtension driLegacyExtension = {
- { __DRI_LEGACY, __DRI_LEGACY_VERSION },
- driCreateNewScreen,
- driCreateNewDrawable,
- driCreateNewContext,
+ .base = { __DRI_CORE, __DRI_CORE_VERSION },
+
+ .createNewScreen = NULL,
+ .destroyScreen = driDestroyScreen,
+ .getExtensions = driGetExtensions,
+ .getConfigAttrib = driGetConfigAttrib,
+ .indexConfigAttrib = driIndexConfigAttrib,
+ .createNewDrawable = NULL,
+ .destroyDrawable = driDestroyDrawable,
+ .swapBuffers = driSwapBuffers, /* swrast */
+ .createNewContext = dri2CreateNewContext, /* swrast */
+ .copyContext = driCopyContext,
+ .destroyContext = driDestroyContext,
+ .bindContext = driBindContext,
+ .unbindContext = driUnbindContext
};
/** DRI2 interface */
const __DRIdri2Extension driDRI2Extension = {
- { __DRI_DRI2, __DRI_DRI2_VERSION },
- dri2CreateNewScreen,
- dri2CreateNewDrawable,
- dri2CreateNewContext,
+ .base = { __DRI_DRI2, 3 },
+
+ .createNewScreen = dri2CreateNewScreen,
+ .createNewDrawable = dri2CreateNewDrawable,
+ .createNewContext = dri2CreateNewContext,
+ .getAPIMask = dri2GetAPIMask,
+ .createNewContextForAPI = dri2CreateNewContextForAPI,
+ .allocateBuffer = dri2AllocateBuffer,
+ .releaseBuffer = dri2ReleaseBuffer,
+ .createContextAttribs = dri2CreateContextAttribs
};
-const __DRI2configQueryExtension dri2ConfigQueryExtension = {
- { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION },
- dri2ConfigQueryb,
- dri2ConfigQueryi,
- dri2ConfigQueryf,
+const __DRIswrastExtension driSWRastExtension = {
+ { __DRI_SWRAST, __DRI_SWRAST_VERSION },
+ driCreateNewScreen,
+ dri2CreateNewDrawable,
+ dri2CreateNewContextForAPI,
+ dri2CreateContextAttribs
};
-static int
-driFrameTracking(__DRIdrawable *drawable, GLboolean enable)
-{
- return GLX_BAD_CONTEXT;
-}
-
-static int
-driQueryFrameTracking(__DRIdrawable *dpriv,
- int64_t * sbc, int64_t * missedFrames,
- float * lastMissedUsage, float * usage)
-{
- __DRIswapInfo sInfo;
- int status;
- int64_t ust;
- __DRIscreen *psp = dpriv->driScreenPriv;
-
- status = dpriv->driScreenPriv->DriverAPI.GetSwapInfo( dpriv, & sInfo );
- if ( status == 0 ) {
- *sbc = sInfo.swap_count;
- *missedFrames = sInfo.swap_missed_count;
- *lastMissedUsage = sInfo.swap_missed_usage;
-
- (*psp->systemTime->getUST)( & ust );
- *usage = driCalculateSwapUsage( dpriv, sInfo.swap_ust, ust );
- }
-
- return status;
-}
+const __DRI2configQueryExtension dri2ConfigQueryExtension = {
+ .base = { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION },
-const __DRIframeTrackingExtension driFrameTrackingExtension = {
- { __DRI_FRAME_TRACKING, __DRI_FRAME_TRACKING_VERSION },
- driFrameTracking,
- driQueryFrameTracking
+ .configQueryb = dri2ConfigQueryb,
+ .configQueryi = dri2ConfigQueryi,
+ .configQueryf = dri2ConfigQueryf,
};
-/**
- * Calculate amount of swap interval used between GLX buffer swaps.
- *
- * The usage value, on the range [0,max], is the fraction of total swap
- * interval time used between GLX buffer swaps is calculated.
- *
- * \f$p = t_d / (i * t_r)\f$
- *
- * Where \f$t_d\f$ is the time since the last GLX buffer swap, \f$i\f$ is the
- * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time
- * required for a single vertical refresh period (as returned by \c
- * glXGetMscRateOML).
- *
- * See the documentation for the GLX_MESA_swap_frame_usage extension for more
- * details.
- *
- * \param dPriv Pointer to the private drawable structure.
- * \return If less than a single swap interval time period was required
- * between GLX buffer swaps, a number greater than 0 and less than
- * 1.0 is returned. If exactly one swap interval time period is
- * required, 1.0 is returned, and if more than one is required then
- * a number greater than 1.0 will be returned.
- *
- * \sa glXSwapIntervalSGI glXGetMscRateOML
- *
- * \todo Instead of caching the \c glXGetMscRateOML function pointer, would it
- * be possible to cache the sync rate?
- */
-float
-driCalculateSwapUsage( __DRIdrawable *dPriv, int64_t last_swap_ust,
- int64_t current_ust )
-{
- int32_t n;
- int32_t d;
- int interval;
- float usage = 1.0;
- __DRIscreen *psp = dPriv->driScreenPriv;
-
- if ( (*psp->systemTime->getMSCRate)(dPriv, &n, &d, dPriv->loaderPrivate) ) {
- interval = (dPriv->swap_interval != 0) ? dPriv->swap_interval : 1;
-
-
- /* We want to calculate
- * (current_UST - last_swap_UST) / (interval * us_per_refresh). We get
- * current_UST by calling __glXGetUST. last_swap_UST is stored in
- * dPriv->swap_ust. interval has already been calculated.
- *
- * The only tricky part is us_per_refresh. us_per_refresh is
- * 1000000 / MSC_rate. We know the MSC_rate is n / d. We can flip it
- * around and say us_per_refresh = 1000000 * d / n. Since this goes in
- * the denominator of the final calculation, we calculate
- * (interval * 1000000 * d) and move n into the numerator.
- */
-
- usage = (current_ust - last_swap_ust);
- usage *= n;
- usage /= (interval * d);
- usage /= 1000000.0;
- }
-
- return usage;
-}
-
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);
+ }
+}
projects / mesa.git / blobdiff