summaryrefslogtreecommitdiff
path: root/src/gallium/winsys/xlib
diff options
context:
space:
mode:
authorKeith Whitwell <keithw@vmware.com>2009-07-16 17:57:00 +0100
committerKeith Whitwell <keithw@vmware.com>2009-07-22 12:47:59 +0100
commit07bb026900a6c01226217ceee1d4d1426c040d6e (patch)
tree67eb9ae649b2530d03933b92796670b19d175ab5 /src/gallium/winsys/xlib
parent0ac879dca797360570543d5bd0fd64f8fb8e566e (diff)
gallium/xlib: use XSHM for swapbuffers
Makes some difference, but suprisingly little. Barely worth the effort.
Diffstat (limited to 'src/gallium/winsys/xlib')
-rw-r--r--src/gallium/winsys/xlib/xlib_softpipe.c98
1 files changed, 53 insertions, 45 deletions
diff --git a/src/gallium/winsys/xlib/xlib_softpipe.c b/src/gallium/winsys/xlib/xlib_softpipe.c
index 44b8464518..1de93c4e8c 100644
--- a/src/gallium/winsys/xlib/xlib_softpipe.c
+++ b/src/gallium/winsys/xlib/xlib_softpipe.c
@@ -75,9 +75,6 @@ struct xmesa_pipe_winsys
{
struct pipe_winsys base;
/* struct xmesa_visual *xm_visual; */
-#ifdef USE_XSHM
- int shm;
-#endif
};
@@ -93,11 +90,6 @@ xm_buffer( struct pipe_buffer *buf )
/**
* X Shared Memory Image extension code
*/
-#ifdef USE_XSHM
-#define XSHM_ENABLED(b) ((b)->shm)
-#else
-#define XSHM_ENABLED(b) 0
-#endif
#ifdef USE_XSHM
@@ -116,23 +108,23 @@ mesaHandleXError(Display *dpy, XErrorEvent *event)
}
-static GLboolean alloc_shm(struct xm_buffer *buf, unsigned size)
+static char *alloc_shm(struct xm_buffer *buf, unsigned size)
{
XShmSegmentInfo *const shminfo = & buf->shminfo;
shminfo->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT|0777);
if (shminfo->shmid < 0) {
- return GL_FALSE;
+ return NULL;
}
shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
if (shminfo->shmaddr == (char *) -1) {
shmctl(shminfo->shmid, IPC_RMID, 0);
- return GL_FALSE;
+ return NULL;
}
shminfo->readOnly = False;
- return GL_TRUE;
+ return shminfo->shmaddr;
}
@@ -258,25 +250,30 @@ xlib_softpipe_display_surface(struct xmesa_buffer *b,
return;
#ifdef USE_XSHM
- if (XSHM_ENABLED(xm_buf) && (xm_buf->tempImage == NULL)) {
- assert(surf->texture->block.width == 1);
- assert(surf->texture->block.height == 1);
- alloc_shm_ximage(xm_buf, b, spt->stride[surf->level] /
- surf->texture->block.size, surf->height);
- }
-#endif
+ if (xm_buf->shm)
+ {
+ if (xm_buf->tempImage == NULL)
+ {
+ assert(surf->texture->block.width == 1);
+ assert(surf->texture->block.height == 1);
+ alloc_shm_ximage(xm_buf, b, spt->stride[surf->level] /
+ surf->texture->block.size, surf->height);
+ }
- ximage = (XSHM_ENABLED(xm_buf)) ? xm_buf->tempImage : b->tempImage;
- ximage->data = xm_buf->data;
+ ximage = xm_buf->tempImage;
+ ximage->data = xm_buf->data;
- /* display image in Window */
-#ifdef USE_XSHM
- if (XSHM_ENABLED(xm_buf)) {
+ /* _debug_printf("XSHM\n"); */
XShmPutImage(b->xm_visual->display, b->drawable, b->gc,
ximage, 0, 0, 0, 0, surf->width, surf->height, False);
- } else
+ }
+ else
#endif
{
+ /* display image in Window */
+ ximage = b->tempImage;
+ ximage->data = xm_buf->data;
+
/* check that the XImage has been previously initialized */
assert(ximage->format);
assert(ximage->bitmap_unit);
@@ -286,6 +283,7 @@ xlib_softpipe_display_surface(struct xmesa_buffer *b,
ximage->height = surf->height;
ximage->bytes_per_line = spt->stride[surf->level];
+ /* _debug_printf("XPUT\n"); */
XPutImage(b->xm_visual->display, b->drawable, b->gc,
ximage, 0, 0, 0, 0, surf->width, surf->height);
}
@@ -321,21 +319,6 @@ xm_buffer_create(struct pipe_winsys *pws,
unsigned size)
{
struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
-#ifdef USE_XSHM
- struct xmesa_pipe_winsys *xpws = (struct xmesa_pipe_winsys *) pws;
-
- buffer->shminfo.shmid = -1;
- buffer->shminfo.shmaddr = (char *) -1;
-
- if (xpws->shm && (usage & PIPE_BUFFER_USAGE_PIXEL) != 0) {
- buffer->shm = xpws->shm;
-
- if (alloc_shm(buffer, size)) {
- buffer->data = buffer->shminfo.shmaddr;
- buffer->shm = 1;
- }
- }
-#endif
pipe_reference_init(&buffer->base.reference, 1);
buffer->base.alignment = alignment;
@@ -362,9 +345,6 @@ xm_user_buffer_create(struct pipe_winsys *pws, void *ptr, unsigned bytes)
buffer->base.size = bytes;
buffer->userBuffer = TRUE;
buffer->data = ptr;
-#ifdef USE_XSHM
- buffer->shm = 0;
-#endif
return &buffer->base;
}
@@ -379,16 +359,44 @@ xm_surface_buffer_create(struct pipe_winsys *winsys,
{
const unsigned alignment = 64;
struct pipe_format_block block;
- unsigned nblocksx, nblocksy;
+ unsigned nblocksx, nblocksy, size;
pf_get_block(format, &block);
nblocksx = pf_get_nblocksx(&block, width);
nblocksy = pf_get_nblocksy(&block, height);
*stride = align(nblocksx * block.size, alignment);
+ size = *stride * nblocksy;
+
+#ifdef USE_XSHM
+ if (!debug_get_bool_option("XLIB_NO_SHM", FALSE))
+ {
+ struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
+
+ pipe_reference_init(&buffer->base.reference, 1);
+ buffer->base.alignment = alignment;
+ buffer->base.usage = usage;
+ buffer->base.size = size;
+ buffer->userBuffer = FALSE;
+ buffer->shminfo.shmid = -1;
+ buffer->shminfo.shmaddr = (char *) -1;
+ buffer->shm = TRUE;
+
+ buffer->data = alloc_shm(buffer, size);
+ if (!buffer->data)
+ goto out;
+
+ return &buffer->base;
+
+ out:
+ if (buffer)
+ FREE(buffer);
+ }
+#endif
+
return winsys->buffer_create(winsys, alignment,
usage,
- *stride * nblocksy);
+ size);
}