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-rw-r--r--src/mesa/drivers/dri/common/dri_util.c215
-rw-r--r--src/mesa/drivers/dri/common/dri_util.h26
2 files changed, 227 insertions, 14 deletions
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index 797b2c66f5..01751582fa 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -205,16 +205,22 @@ static GLboolean driBindContext(__DRIcontext * ctx,
** Now that we have a context associated with this drawable, we can
** initialize the drawable information if has not been done before.
*/
- if (!pdp->pStamp || *pdp->pStamp != pdp->lastStamp) {
- DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
- __driUtilUpdateDrawableInfo(pdp);
- DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
- }
- if ((pdp != prp) && (!prp->pStamp || *prp->pStamp != prp->lastStamp)) {
- DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
- __driUtilUpdateDrawableInfo(prp);
- DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+ if (psp->dri2.enabled) {
+ __driParseEvents(psp, pdp);
+ __driParseEvents(psp, prp);
+ } else {
+ if (!pdp->pStamp || *pdp->pStamp != pdp->lastStamp) {
+ DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+ __driUtilUpdateDrawableInfo(pdp);
+ DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+ }
+
+ if ((pdp != prp) && (!prp->pStamp || *prp->pStamp != prp->lastStamp)) {
+ DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+ __driUtilUpdateDrawableInfo(prp);
+ DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+ }
}
/* Call device-specific MakeCurrent */
@@ -302,6 +308,103 @@ __driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp)
}
+int
+__driParseEvents(__DRIscreenPrivate *psp, __DRIdrawablePrivate *pdp)
+{
+ __DRIDrawableConfigEvent *dc;
+ __DRIBufferAttachEvent *ba;
+ unsigned int tail, mask, *p, end, total, size, changed;
+ unsigned char *data;
+ size_t rect_size;
+ __DRIcontextPrivate *pcp = pdp->driContextPriv;
+
+ if (pcp == NULL)
+ return 0;
+
+ /* Check for wraparound. */
+ if (psp->dri2.buffer->prealloc - pdp->dri2.tail > psp->dri2.buffer->size) {
+ /* If prealloc overlaps into what we just parsed, the
+ * server overwrote it and we have to reset our tail
+ * pointer. */
+ DRM_UNLOCK(psp->fd, psp->lock, pcp->hHWContext);
+ (*dri_interface->reemitDrawableInfo)(pdp->pdraw);
+ DRM_LIGHT_LOCK(psp->fd, psp->lock, pcp->hHWContext);
+ }
+
+ total = psp->dri2.buffer->head - pdp->dri2.tail;
+ mask = psp->dri2.buffer->size - 1;
+ tail = pdp->dri2.tail;
+ end = psp->dri2.buffer->head;
+ data = psp->dri2.buffer->data;
+ changed = 0;
+
+ while (tail != end) {
+ p = (unsigned int *) (data + (tail & mask));
+ size = DRI2_EVENT_SIZE(*p);
+ if (size > total || (tail & mask) + size > psp->dri2.buffer->size) {
+ /* illegal data, bail out. */
+ fprintf(stderr, "illegal event size\n");
+ break;
+ }
+
+ switch (DRI2_EVENT_TYPE(*p)) {
+ case DRI2_EVENT_DRAWABLE_CONFIG:
+ dc = (__DRIDrawableConfigEvent *) p;
+
+ if (dc->drawable != pdp->hHWDrawable)
+ break;
+
+ if (pdp->w != dc->width || pdp->h != dc->height)
+ changed = 1;
+
+ pdp->x = dc->x;
+ pdp->y = dc->y;
+ pdp->w = dc->width;
+ pdp->h = dc->height;
+
+ pdp->backX = 0;
+ pdp->backY = 0;
+ pdp->numBackClipRects = 1;
+ pdp->pBackClipRects[0].x1 = 0;
+ pdp->pBackClipRects[0].y1 = 0;
+ pdp->pBackClipRects[0].x2 = pdp->w;
+ pdp->pBackClipRects[0].y2 = pdp->h;
+
+ pdp->numClipRects = dc->num_rects;
+ _mesa_free(pdp->pClipRects);
+ rect_size = dc->num_rects * sizeof dc->rects[0];
+ pdp->pClipRects = _mesa_malloc(rect_size);
+ memcpy(pdp->pClipRects, dc->rects, rect_size);
+
+ if (changed)
+ (*psp->DriverAPI.UpdateBuffer)(pdp, p);
+ break;
+
+ case DRI2_EVENT_BUFFER_ATTACH:
+ ba = (__DRIBufferAttachEvent *) p;
+
+ if (ba->drawable != pdp->hHWDrawable)
+ break;
+
+ (*psp->DriverAPI.UpdateBuffer)(pdp, p);
+ break;
+
+ default:
+ break;
+ }
+
+ tail += size;
+ }
+
+ pdp->dri2.tail = tail;
+
+ /* FIXME: Return whether we changed anything. This check always
+ * returns true if we received events, but we could refine the
+ * check to only return TRUE if the drawable actually changed. */
+
+ return total > 0;
+}
+
/*@}*/
/*****************************************************************/
@@ -497,6 +600,11 @@ static void *driCreateNewDrawable(__DRIscreen *screen,
pdp->swapBuffers = psp->DriverAPI.SwapBuffers;
+ if (psp->dri2.enabled) {
+ pdp->dri2.tail = 0;
+ pdp->pBackClipRects = _mesa_malloc(sizeof *pdp->pBackClipRects);
+ }
+
return (void *) pdp;
}
@@ -596,7 +704,7 @@ driCreateNewContext(__DRIscreen *screen, const __GLcontextModes *modes,
* context.
*/
- if (!psp->dummyContextPriv.driScreenPriv) {
+ if (!psp->dri2.enabled && !psp->dummyContextPriv.driScreenPriv) {
psp->dummyContextPriv.hHWContext = psp->pSAREA->dummy_context;
psp->dummyContextPriv.driScreenPriv = psp;
psp->dummyContextPriv.driDrawablePriv = NULL;
@@ -655,15 +763,19 @@ static void driDestroyScreen(__DRIscreen *screen)
if (psp->DriverAPI.DestroyScreen)
(*psp->DriverAPI.DestroyScreen)(psp);
- (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
- (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
- (void)drmCloseOnce(psp->fd);
+ if (psp->dri2.enabled) {
+ drmBOUnmap(psp->fd, &psp->dri2.sareaBO);
+ drmBOUnreference(psp->fd, &psp->dri2.sareaBO);
+ } else {
+ (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
+ (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
+ (void)drmCloseOnce(psp->fd);
+ }
_mesa_free(psp);
}
}
-
/**
* This is the bootstrap function for the driver. libGL supplies all of the
* requisite information about the system, and the driver initializes itself.
@@ -730,6 +842,7 @@ void * __DRI_CREATE_NEW_SCREEN( int scrn, __DRIscreen *psc,
psp->dri_version = *dri_version;
psp->pSAREA = pSAREA;
+ psp->lock = (drmLock *) &psp->pSAREA->lock;
psp->pFB = frame_buffer->base;
psp->fbSize = frame_buffer->size;
@@ -743,6 +856,7 @@ void * __DRI_CREATE_NEW_SCREEN( int scrn, __DRIscreen *psc,
psp->extensions = emptyExtensionList;
psp->fd = fd;
psp->myNum = scrn;
+ psp->dri2.enabled = GL_FALSE;
/*
** Do not init dummy context here; actual initialization will be
@@ -765,6 +879,79 @@ void * __DRI_CREATE_NEW_SCREEN( int scrn, __DRIscreen *psc,
return psp;
}
+PUBLIC void *
+__DRI2_CREATE_NEW_SCREEN(int scrn, __DRIscreen *psc,
+ const __DRIversion * ddx_version,
+ const __DRIversion * dri_version,
+ const __DRIversion * drm_version,
+ int fd,
+ unsigned int sarea_handle,
+ const __DRIinterfaceMethods * interface,
+ __GLcontextModes ** driver_modes)
+{
+ __DRIscreenPrivate *psp;
+ static const __DRIextension *emptyExtensionList[] = { NULL };
+ dri_interface = interface;
+ unsigned int *p;
+
+ psp = _mesa_malloc(sizeof(*psp));
+ if (!psp)
+ return NULL;
+
+ psp->psc = psc;
+
+ psp->drm_version = *drm_version;
+ psp->ddx_version = *ddx_version;
+ psp->dri_version = *dri_version;
+ psp->extensions = emptyExtensionList;
+ psp->fd = fd;
+ psp->myNum = scrn;
+ psp->dri2.enabled = GL_TRUE;
+
+ if (drmBOReference(psp->fd, sarea_handle, &psp->dri2.sareaBO)) {
+ fprintf(stderr, "Failed to reference DRI2 sarea BO\n");
+ _mesa_free(psp);
+ return NULL;
+ }
+
+ if (drmBOMap(psp->fd, &psp->dri2.sareaBO,
+ DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE, 0, &psp->dri2.sarea)) {
+ drmBOUnreference(psp->fd, &psp->dri2.sareaBO);
+ _mesa_free(psp);
+ return NULL;
+ }
+
+ p = psp->dri2.sarea;
+ while (DRI2_SAREA_BLOCK_TYPE(*p)) {
+ switch (DRI2_SAREA_BLOCK_TYPE(*p)) {
+ case DRI2_SAREA_BLOCK_LOCK:
+ psp->dri2.lock = (__DRILock *) p;
+ break;
+ case DRI2_SAREA_BLOCK_EVENT_BUFFER:
+ psp->dri2.buffer = (__DRIEventBuffer *) p;
+ break;
+ }
+ p = DRI2_SAREA_BLOCK_NEXT(p);
+ }
+
+ psp->lock = (drmLock *) &psp->dri2.lock->lock;
+
+ psc->destroyScreen = driDestroyScreen;
+ psc->getExtensions = driGetExtensions;
+ psc->createNewDrawable = driCreateNewDrawable;
+ psc->createNewContext = driCreateNewContext;
+
+ *driver_modes = __dri2DriverInitScreen(psp);
+ if (*driver_modes == NULL) {
+ drmBOUnmap(psp->fd, &psp->dri2.sareaBO);
+ drmBOUnreference(psp->fd, &psp->dri2.sareaBO);
+ _mesa_free(psp);
+ return NULL;
+ }
+
+ return psp;
+}
+
/**
* Compare the current GLX API version with a driver supplied required version.
*
diff --git a/src/mesa/drivers/dri/common/dri_util.h b/src/mesa/drivers/dri/common/dri_util.h
index def0775839..db7eeed92a 100644
--- a/src/mesa/drivers/dri/common/dri_util.h
+++ b/src/mesa/drivers/dri/common/dri_util.h
@@ -55,6 +55,7 @@
#include "xf86drm.h"
#include "GL/internal/glcore.h"
#include "GL/internal/dri_interface.h"
+#include "GL/internal/dri_sarea.h"
#define GLX_BAD_CONTEXT 5
@@ -73,6 +74,9 @@ typedef struct __DRIutilversionRec2 __DRIutilversion2;
*/
extern __GLcontextModes *__driDriverInitScreen(__DRIscreenPrivate *psp);
+/** Ditto for DRI2 capable drivers. */
+extern __GLcontextModes *__dri2DriverInitScreen(__DRIscreenPrivate *psp);
+
/**
* Extensions.
*/
@@ -214,6 +218,10 @@ struct __DriverAPIRec {
int (*GetDrawableMSC) ( __DRIscreenPrivate * priv,
__DRIdrawablePrivate *drawablePrivate,
int64_t *count);
+
+ /* DRI2 Entry points */
+ void (*UpdateBuffer)(__DRIdrawablePrivate *dPriv,
+ unsigned int *event);
};
@@ -371,6 +379,9 @@ struct __DRIdrawablePrivateRec {
* GLX_MESA_swap_control.
*/
unsigned int swap_interval;
+ struct {
+ unsigned int tail;
+ } dri2;
};
/**
@@ -516,6 +527,19 @@ struct __DRIscreenPrivateRec {
* Extensions provided by this driver.
*/
const __DRIextension **extensions;
+
+ struct {
+ /* Flag to indicate that this is a DRI2 screen. Many of the above
+ * fields will not be valid or initializaed in that case. */
+ int enabled;
+ drmBO sareaBO;
+ void *sarea;
+ __DRIEventBuffer *buffer;
+ __DRILock *lock;
+ } dri2;
+
+ /* The lock actually in use, old sarea or DRI2 */
+ drmLock *lock;
};
@@ -538,6 +562,8 @@ __driUtilMessage(const char *f, ...);
extern void
__driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp);
+extern int
+__driParseEvents(__DRIscreenPrivate *psp, __DRIdrawablePrivate *pdp);
extern __DRIscreenPrivate * __driUtilCreateNewScreen( int scr, __DRIscreen *psc,
__GLcontextModes * modes,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 03:50:25 +0000