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-rw-r--r--src/glx/drisw_glx.c165
-rw-r--r--src/glx/drisw_priv.h3
2 files changed, 144 insertions, 24 deletions
diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c
index df2467a5c2d..641917361b8 100644
--- a/src/glx/drisw_glx.c
+++ b/src/glx/drisw_glx.c
@@ -28,10 +28,12 @@
#include <dlfcn.h>
#include "dri_common.h"
#include "drisw_priv.h"
+#include <X11/extensions/shmproto.h>
+#include <assert.h>
static Bool
-XCreateDrawable(struct drisw_drawable * pdp,
- Display * dpy, XID drawable, int visualid)
+XCreateGCs(struct drisw_drawable * pdp,
+ Display * dpy, XID drawable, int visualid)
{
XGCValues gcvalues;
long visMask;
@@ -56,15 +58,78 @@ XCreateDrawable(struct drisw_drawable * pdp,
if (!pdp->visinfo || num_visuals == 0)
return False;
- /* create XImage */
- pdp->ximage = XCreateImage(dpy,
- pdp->visinfo->visual,
- pdp->visinfo->depth,
- ZPixmap, 0, /* format, offset */
- NULL, /* data */
- 0, 0, /* width, height */
- 32, /* bitmap_pad */
- 0); /* bytes_per_line */
+ return True;
+}
+
+static int xshm_error = 0;
+static int xshm_opcode = -1;
+
+/**
+ * Catches potential Xlib errors.
+ */
+static int
+handle_xerror(Display *dpy, XErrorEvent *event)
+{
+ (void) dpy;
+
+ assert(xshm_opcode != -1);
+ if (event->request_code != xshm_opcode ||
+ event->minor_code != X_ShmAttach)
+ return 0;
+
+ xshm_error = 1;
+ return 0;
+}
+
+static Bool
+XCreateDrawable(struct drisw_drawable * pdp, int shmid, Display * dpy)
+{
+ if (pdp->ximage) {
+ XDestroyImage(pdp->ximage);
+ pdp->ximage = NULL;
+ }
+
+ if (!xshm_error && shmid >= 0) {
+ pdp->shminfo.shmid = shmid;
+ pdp->ximage = XShmCreateImage(dpy,
+ pdp->visinfo->visual,
+ pdp->visinfo->depth,
+ ZPixmap, /* format */
+ NULL, /* data */
+ &pdp->shminfo, /* shminfo */
+ 0, 0); /* width, height */
+ if (pdp->ximage != NULL) {
+ int (*old_handler)(Display *, XErrorEvent *);
+
+ /* dispatch pending errors */
+ XSync(dpy, False);
+
+ old_handler = XSetErrorHandler(handle_xerror);
+ /* This may trigger the X protocol error we're ready to catch: */
+ XShmAttach(dpy, &pdp->shminfo);
+ XSync(dpy, False);
+
+ if (xshm_error) {
+ /* we are on a remote display, this error is normal, don't print it */
+ XDestroyImage(pdp->ximage);
+ pdp->ximage = NULL;
+ }
+
+ (void) XSetErrorHandler(old_handler);
+ }
+ }
+
+ if (pdp->ximage == NULL) {
+ pdp->shminfo.shmid = -1;
+ pdp->ximage = XCreateImage(dpy,
+ pdp->visinfo->visual,
+ pdp->visinfo->depth,
+ ZPixmap, 0, /* format, offset */
+ NULL, /* data */
+ 0, 0, /* width, height */
+ 32, /* bitmap_pad */
+ 0); /* bytes_per_line */
+ }
/**
* swrast does not handle 24-bit depth with 24 bpp, so let X do the
@@ -79,7 +144,9 @@ XCreateDrawable(struct drisw_drawable * pdp,
static void
XDestroyDrawable(struct drisw_drawable * pdp, Display * dpy, XID drawable)
{
- XDestroyImage(pdp->ximage);
+ if (pdp->ximage)
+ XDestroyImage(pdp->ximage);
+
free(pdp->visinfo);
XFreeGC(dpy, pdp->gc);
@@ -133,9 +200,9 @@ bytes_per_line(unsigned pitch_bits, unsigned mul)
}
static void
-swrastPutImage2(__DRIdrawable * draw, int op,
+swrastXPutImage(__DRIdrawable * draw, int op,
int x, int y, int w, int h, int stride,
- char *data, void *loaderPrivate)
+ int shmid, char *data, void *loaderPrivate)
{
struct drisw_drawable *pdp = loaderPrivate;
__GLXDRIdrawable *pdraw = &(pdp->base);
@@ -144,6 +211,11 @@ swrastPutImage2(__DRIdrawable * draw, int op,
XImage *ximage;
GC gc;
+ if (!pdp->ximage || shmid != pdp->shminfo.shmid) {
+ if (!XCreateDrawable(pdp, shmid, dpy))
+ return;
+ }
+
switch (op) {
case __DRI_SWRAST_IMAGE_OP_DRAW:
gc = pdp->gc;
@@ -156,24 +228,52 @@ swrastPutImage2(__DRIdrawable * draw, int op,
}
drawable = pdraw->xDrawable;
-
ximage = pdp->ximage;
- ximage->data = data;
- ximage->width = w;
- ximage->height = h;
ximage->bytes_per_line = stride ? stride : bytes_per_line(w * ximage->bits_per_pixel, 32);
+ ximage->data = data;
- XPutImage(dpy, drawable, gc, ximage, 0, 0, x, y, w, h);
-
+ if (pdp->shminfo.shmid >= 0) {
+ ximage->width = ximage->bytes_per_line / ((ximage->bits_per_pixel + 7)/ 8);
+ ximage->height = h;
+ XShmPutImage(dpy, drawable, gc, ximage, 0, 0, x, y, w, h, False);
+ XSync(dpy, False);
+ } else {
+ ximage->width = w;
+ ximage->height = h;
+ XPutImage(dpy, drawable, gc, ximage, 0, 0, x, y, w, h);
+ }
ximage->data = NULL;
}
static void
+swrastPutImageShm(__DRIdrawable * draw, int op,
+ int x, int y, int w, int h, int stride,
+ int shmid, char *shmaddr, unsigned offset,
+ void *loaderPrivate)
+{
+ struct drisw_drawable *pdp = loaderPrivate;
+
+ pdp->shminfo.shmaddr = shmaddr;
+ swrastXPutImage(draw, op, x, y, w, h, stride, shmid,
+ shmaddr + offset, loaderPrivate);
+}
+
+static void
+swrastPutImage2(__DRIdrawable * draw, int op,
+ int x, int y, int w, int h, int stride,
+ char *data, void *loaderPrivate)
+{
+ swrastXPutImage(draw, op, x, y, w, h, stride, -1,
+ data, loaderPrivate);
+}
+
+static void
swrastPutImage(__DRIdrawable * draw, int op,
int x, int y, int w, int h,
char *data, void *loaderPrivate)
{
- swrastPutImage2(draw, op, x, y, w, h, 0, data, loaderPrivate);
+ swrastXPutImage(draw, op, x, y, w, h, 0, -1,
+ data, loaderPrivate);
}
static void
@@ -187,6 +287,11 @@ swrastGetImage2(__DRIdrawable * read,
Drawable readable;
XImage *ximage;
+ if (!prp->ximage || prp->shminfo.shmid >= 0) {
+ if (!XCreateDrawable(prp, -1, dpy))
+ return;
+ }
+
readable = pread->xDrawable;
ximage = prp->ximage;
@@ -208,14 +313,15 @@ swrastGetImage(__DRIdrawable * read,
swrastGetImage2(read, x, y, w, h, 0, data, loaderPrivate);
}
-static const __DRIswrastLoaderExtension swrastLoaderExtension = {
- .base = {__DRI_SWRAST_LOADER, 3 },
+static __DRIswrastLoaderExtension swrastLoaderExtension = {
+ .base = {__DRI_SWRAST_LOADER, 4 },
.getDrawableInfo = swrastGetDrawableInfo,
.putImage = swrastPutImage,
.getImage = swrastGetImage,
.putImage2 = swrastPutImage2,
.getImage2 = swrastGetImage2,
+ .putImageShm = swrastPutImageShm,
};
static const __DRIextension *loader_extensions[] = {
@@ -527,7 +633,7 @@ driswCreateDrawable(struct glx_screen *base, XID xDrawable,
pdp->base.drawable = drawable;
pdp->base.psc = &psc->base;
- ret = XCreateDrawable(pdp, psc->base.dpy, xDrawable, modes->visualID);
+ ret = XCreateGCs(pdp, psc->base.dpy, xDrawable, modes->visualID);
if (!ret) {
free(pdp);
return NULL;
@@ -661,6 +767,14 @@ driswBindExtensions(struct drisw_screen *psc, const __DRIextension **extensions)
}
}
+static int
+check_xshm(Display *dpy)
+{
+ int ignore;
+
+ return XQueryExtension(dpy, "MIT-SHM", &xshm_opcode, &ignore, &ignore);
+}
+
static struct glx_screen *
driswCreateScreen(int screen, struct glx_display *priv)
{
@@ -688,6 +802,9 @@ driswCreateScreen(int screen, struct glx_display *priv)
if (extensions == NULL)
goto handle_error;
+ if (!check_xshm(psc->base.dpy))
+ swrastLoaderExtension.putImageShm = NULL;
+
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
psc->core = (__DRIcoreExtension *) extensions[i];
diff --git a/src/glx/drisw_priv.h b/src/glx/drisw_priv.h
index 5d479003114..a670da2d33b 100644
--- a/src/glx/drisw_priv.h
+++ b/src/glx/drisw_priv.h
@@ -23,6 +23,8 @@
* SOFTWARE.
*/
+#include <X11/extensions/XShm.h>
+
struct drisw_display
{
__GLXDRIdisplay base;
@@ -62,6 +64,7 @@ struct drisw_drawable
__DRIdrawable *driDrawable;
XVisualInfo *visinfo;
XImage *ximage;
+ XShmSegmentInfo shminfo;
};
_X_HIDDEN int
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 13:35:38 +0000