*
**************************************************************************/
-/*
- * Authors:
- * Keith Whitwell
- * Brian Paul
- */
-
-
-#include "xm_api.h"
-
-#undef ASSERT
-#undef Elements
-
-#include "pipe/internal/p_winsys_screen.h"
-#include "pipe/p_format.h"
-#include "pipe/p_context.h"
-#include "pipe/p_inlines.h"
-#include "util/u_format.h"
-#include "util/u_math.h"
-#include "util/u_memory.h"
-#include "softpipe/sp_winsys.h"
-#include "softpipe/sp_texture.h"
#include "xlib.h"
-
-/**
- * Subclass of pipe_buffer for Xlib winsys.
- * Low-level OS/window system memory buffer
- */
-struct xm_buffer
-{
- struct pipe_buffer base;
- boolean userBuffer; /** Is this a user-space buffer? */
- void *data;
- void *mapped;
-
- XImage *tempImage;
-#ifdef USE_XSHM
- int shm;
- XShmSegmentInfo shminfo;
-#endif
-};
-
-
-/**
- * Subclass of pipe_winsys for Xlib winsys
- */
-struct xmesa_pipe_winsys
-{
- struct pipe_winsys base;
-/* struct xmesa_visual *xm_visual; */
-};
-
-
-
-/** Cast wrapper */
-static INLINE struct xm_buffer *
-xm_buffer( struct pipe_buffer *buf )
-{
- return (struct xm_buffer *)buf;
-}
-
-
-/**
- * X Shared Memory Image extension code
- */
-
-#ifdef USE_XSHM
-
-static volatile int mesaXErrorFlag = 0;
-
-/**
- * Catches potential Xlib errors.
- */
-static int
-mesaHandleXError(Display *dpy, XErrorEvent *event)
-{
- (void) dpy;
- (void) event;
- mesaXErrorFlag = 1;
- return 0;
-}
-
-
-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 NULL;
- }
-
- shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
- if (shminfo->shmaddr == (char *) -1) {
- shmctl(shminfo->shmid, IPC_RMID, 0);
- return NULL;
- }
-
- shminfo->readOnly = False;
- return shminfo->shmaddr;
-}
-
-
-/**
- * Allocate a shared memory XImage back buffer for the given XMesaBuffer.
- */
-static void
-alloc_shm_ximage(struct xm_buffer *b, struct xmesa_buffer *xmb,
- unsigned width, unsigned height)
-{
- /*
- * We have to do a _lot_ of error checking here to be sure we can
- * really use the XSHM extension. It seems different servers trigger
- * errors at different points if the extension won't work. Therefore
- * we have to be very careful...
- */
- int (*old_handler)(Display *, XErrorEvent *);
-
- b->tempImage = XShmCreateImage(xmb->xm_visual->display,
- xmb->xm_visual->visinfo->visual,
- xmb->xm_visual->visinfo->depth,
- ZPixmap,
- NULL,
- &b->shminfo,
- width, height);
- if (b->tempImage == NULL) {
- b->shm = 0;
- return;
- }
-
-
- mesaXErrorFlag = 0;
- old_handler = XSetErrorHandler(mesaHandleXError);
- /* This may trigger the X protocol error we're ready to catch: */
- XShmAttach(xmb->xm_visual->display, &b->shminfo);
- XSync(xmb->xm_visual->display, False);
-
- if (mesaXErrorFlag) {
- /* we are on a remote display, this error is normal, don't print it */
- XFlush(xmb->xm_visual->display);
- mesaXErrorFlag = 0;
- XDestroyImage(b->tempImage);
- b->tempImage = NULL;
- b->shm = 0;
- (void) XSetErrorHandler(old_handler);
- return;
- }
-
- b->shm = 1;
-}
-
-#endif /* USE_XSHM */
-
-
-
-/* Most callbacks map direcly onto dri_bufmgr operations:
- */
-static void *
-xm_buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buf,
- unsigned flags)
-{
- struct xm_buffer *xm_buf = xm_buffer(buf);
- xm_buf->mapped = xm_buf->data;
- return xm_buf->mapped;
-}
-
-static void
-xm_buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buf)
-{
- struct xm_buffer *xm_buf = xm_buffer(buf);
- xm_buf->mapped = NULL;
-}
-
-static void
-xm_buffer_destroy(struct pipe_buffer *buf)
-{
- struct xm_buffer *oldBuf = xm_buffer(buf);
-
- if (oldBuf->data) {
-#ifdef USE_XSHM
- if (oldBuf->shminfo.shmid >= 0) {
- shmdt(oldBuf->shminfo.shmaddr);
- shmctl(oldBuf->shminfo.shmid, IPC_RMID, 0);
-
- oldBuf->shminfo.shmid = -1;
- oldBuf->shminfo.shmaddr = (char *) -1;
- }
- else
-#endif
- {
- if (!oldBuf->userBuffer) {
- align_free(oldBuf->data);
- }
- }
-
- oldBuf->data = NULL;
- }
-
- free(oldBuf);
-}
-
-
-/**
- * Display/copy the image in the surface into the X window specified
- * by the XMesaBuffer.
- */
-static void
-xlib_softpipe_display_surface(struct xmesa_buffer *b,
- struct pipe_surface *surf)
-{
- XImage *ximage;
- struct softpipe_texture *spt = softpipe_texture(surf->texture);
- struct xm_buffer *xm_buf = xm_buffer(spt->buffer);
- static boolean no_swap = 0;
- static boolean firsttime = 1;
-
- if (firsttime) {
- no_swap = getenv("SP_NO_RAST") != NULL;
- firsttime = 0;
- }
-
- if (no_swap)
- return;
-
-#ifdef USE_XSHM
- if (xm_buf->shm)
- {
- if (xm_buf->tempImage == NULL)
- {
- assert(util_format_get_blockwidth(surf->texture->format) == 1);
- assert(util_format_get_blockheight(surf->texture->format) == 1);
- alloc_shm_ximage(xm_buf, b, spt->stride[surf->level] /
- util_format_get_blocksize(surf->texture->format), surf->height);
- }
-
- ximage = xm_buf->tempImage;
- ximage->data = xm_buf->data;
-
- /* _debug_printf("XSHM\n"); */
- XShmPutImage(b->xm_visual->display, b->drawable, b->gc,
- ximage, 0, 0, 0, 0, surf->width, surf->height, False);
- }
- 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);
-
- /* update XImage's fields */
- ximage->width = surf->width;
- 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);
- }
-}
-
-
-static void
-xm_flush_frontbuffer(struct pipe_winsys *pws,
- struct pipe_surface *surf,
- void *context_private)
-{
- /*
- * The front color buffer is actually just another XImage buffer.
- * This function copies that XImage to the actual X Window.
- */
- XMesaContext xmctx = (XMesaContext) context_private;
- xlib_softpipe_display_surface(xmctx->xm_buffer, surf);
- xmesa_check_and_update_buffer_size(xmctx, xmctx->xm_buffer);
-}
-
-
-
-static const char *
-xm_get_name(struct pipe_winsys *pws)
-{
- return "Xlib";
-}
-
-
-static struct pipe_buffer *
-xm_buffer_create(struct pipe_winsys *pws,
- unsigned alignment,
- unsigned usage,
- unsigned size)
-{
- 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;
-
- if (buffer->data == NULL) {
- /* align to 16-byte multiple for Cell */
- buffer->data = align_malloc(size, max(alignment, 16));
- }
-
- return &buffer->base;
-}
-
-
-/**
- * Create buffer which wraps user-space data.
- */
-static struct pipe_buffer *
-xm_user_buffer_create(struct pipe_winsys *pws, void *ptr, unsigned bytes)
-{
- struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
- pipe_reference_init(&buffer->base.reference, 1);
- buffer->base.size = bytes;
- buffer->userBuffer = TRUE;
- buffer->data = ptr;
-
- return &buffer->base;
-}
-
-
-static struct pipe_buffer *
-xm_surface_buffer_create(struct pipe_winsys *winsys,
- unsigned width, unsigned height,
- enum pipe_format format,
- unsigned usage,
- unsigned tex_usage,
- unsigned *stride)
-{
- const unsigned alignment = 64;
- unsigned nblocksy, size;
-
- nblocksy = util_format_get_nblocksy(format, height);
- *stride = align(util_format_get_stride(format, width), 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,
- size);
-}
-
-
-/*
- * Fence functions - basically nothing to do, as we don't create any actual
- * fence objects.
- */
-
-static void
-xm_fence_reference(struct pipe_winsys *sws, struct pipe_fence_handle **ptr,
- struct pipe_fence_handle *fence)
-{
-}
-
-
-static int
-xm_fence_signalled(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
- unsigned flag)
-{
- return 0;
-}
-
-
-static int
-xm_fence_finish(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
- unsigned flag)
-{
- return 0;
-}
-
-
-
-static struct pipe_winsys *
-xlib_create_softpipe_winsys( void )
-{
- static struct xmesa_pipe_winsys *ws = NULL;
-
- if (!ws) {
- ws = CALLOC_STRUCT(xmesa_pipe_winsys);
-
- /* Fill in this struct with callbacks that pipe will need to
- * communicate with the window system, buffer manager, etc.
- */
- ws->base.buffer_create = xm_buffer_create;
- ws->base.user_buffer_create = xm_user_buffer_create;
- ws->base.buffer_map = xm_buffer_map;
- ws->base.buffer_unmap = xm_buffer_unmap;
- ws->base.buffer_destroy = xm_buffer_destroy;
-
- ws->base.surface_buffer_create = xm_surface_buffer_create;
-
- ws->base.fence_reference = xm_fence_reference;
- ws->base.fence_signalled = xm_fence_signalled;
- ws->base.fence_finish = xm_fence_finish;
-
- ws->base.flush_frontbuffer = xm_flush_frontbuffer;
- ws->base.get_name = xm_get_name;
- }
-
- return &ws->base;
-}
-
+#include "softpipe/sp_texture.h"
+#include "softpipe/sp_screen.h"
+#include "state_tracker/sw_winsys.h"
static struct pipe_screen *
xlib_create_softpipe_screen( void )
{
- struct pipe_winsys *winsys;
+ struct sw_winsys *winsys;
struct pipe_screen *screen;
- winsys = xlib_create_softpipe_winsys();
+ winsys = xlib_create_sw_winsys();
if (winsys == NULL)
return NULL;
}
-static struct pipe_context *
-xlib_create_softpipe_context( struct pipe_screen *screen,
- void *context_private )
+static void
+xlib_softpipe_display_surface(struct xmesa_buffer *xm_buffer,
+ struct pipe_surface *surf)
{
- struct pipe_context *pipe;
-
- pipe = softpipe_create(screen);
- if (pipe == NULL)
- goto fail;
+ struct softpipe_texture *texture = softpipe_texture(surf->texture);
- pipe->priv = context_private;
- return pipe;
-
-fail:
- /* Free stuff here */
- return NULL;
+ assert(texture->dt);
+ if (texture->dt)
+ xlib_sw_display(xm_buffer, texture->dt);
}
+
struct xm_driver xlib_softpipe_driver =
{
.create_pipe_screen = xlib_create_softpipe_screen,
- .create_pipe_context = xlib_create_softpipe_context,
.display_surface = xlib_softpipe_display_surface
};
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