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+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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.
+ *
+ **************************************************************************/
+
+#ifndef P_INLINES_H
+#define P_INLINES_H
+
+#include "p_context.h"
+#include "p_defines.h"
+#include "p_screen.h"
+#include "p_winsys.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* XXX: these are a kludge. will fix when all surfaces are views into
+ * textures, and free-floating winsys surfaces go away.
+ */
+static INLINE void *
+pipe_surface_map( struct pipe_surface *surf, unsigned flags )
+{
+ if (surf->texture) {
+ struct pipe_screen *screen = surf->texture->screen;
+ return surf->texture->screen->surface_map( screen, surf, flags );
+ }
+ else {
+ struct pipe_winsys *winsys = surf->winsys;
+ char *map = (char *)winsys->buffer_map( winsys, surf->buffer, flags );
+ if (map == NULL)
+ return NULL;
+ return (void *)(map + surf->offset);
+ }
+}
+
+static INLINE void
+pipe_surface_unmap( struct pipe_surface *surf )
+{
+ if (surf->texture) {
+ struct pipe_screen *screen = surf->texture->screen;
+ surf->texture->screen->surface_unmap( screen, surf );
+ }
+ else {
+ struct pipe_winsys *winsys = surf->winsys;
+ winsys->buffer_unmap( winsys, surf->buffer );
+ }
+}
+
+
+
+/**
+ * Set 'ptr' to point to 'surf' and update reference counting.
+ * The old thing pointed to, if any, will be unreferenced first.
+ * 'surf' may be NULL.
+ */
+static INLINE void
+pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
+{
+ /* bump the refcount first */
+ if (surf) {
+ assert(surf->refcount);
+ surf->refcount++;
+ }
+
+ if (*ptr) {
+ assert((*ptr)->refcount);
+
+ /* There are currently two sorts of surfaces... This needs to be
+ * fixed so that all surfaces are views into a texture.
+ */
+ if ((*ptr)->texture) {
+ struct pipe_screen *screen = (*ptr)->texture->screen;
+ screen->tex_surface_release( screen, ptr );
+ }
+ else {
+ struct pipe_winsys *winsys = (*ptr)->winsys;
+ winsys->surface_release(winsys, ptr);
+ }
+
+ assert(!*ptr);
+ }
+
+ *ptr = surf;
+}
+
+
+/* XXX: thread safety issues!
+ */
+static INLINE void
+winsys_buffer_reference(struct pipe_winsys *winsys,
+ struct pipe_buffer **ptr,
+ struct pipe_buffer *buf)
+{
+ if (buf) {
+ assert(buf->refcount);
+ buf->refcount++;
+ }
+
+ if (*ptr) {
+ assert((*ptr)->refcount);
+ if(--(*ptr)->refcount == 0)
+ winsys->buffer_destroy( winsys, *ptr );
+ }
+
+ *ptr = buf;
+}
+
+
+
+/**
+ * \sa pipe_surface_reference
+ */
+static INLINE void
+pipe_texture_reference(struct pipe_texture **ptr,
+ struct pipe_texture *pt)
+{
+ assert(ptr);
+
+ if (pt) {
+ assert(pt->refcount);
+ pt->refcount++;
+ }
+
+ if (*ptr) {
+ struct pipe_screen *screen = (*ptr)->screen;
+ assert(screen);
+ assert((*ptr)->refcount);
+ screen->texture_release(screen, ptr);
+
+ assert(!*ptr);
+ }
+
+ *ptr = pt;
+}
+
+
+static INLINE void
+pipe_texture_release(struct pipe_texture **ptr)
+{
+ struct pipe_screen *screen;
+ assert(ptr);
+ screen = (*ptr)->screen;
+ assert((*ptr)->refcount);
+ screen->texture_release(screen, ptr);
+ *ptr = NULL;
+}
+
+
+/**
+ * Convenience wrappers for winsys buffer functions.
+ */
+
+static INLINE struct pipe_buffer *
+pipe_buffer_create( struct pipe_screen *screen,
+ unsigned alignment, unsigned usage, unsigned size )
+{
+ return screen->winsys->buffer_create(screen->winsys, alignment, usage, size);
+}
+
+static INLINE struct pipe_buffer *
+pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size )
+{
+ return screen->winsys->user_buffer_create(screen->winsys, ptr, size);
+}
+
+static INLINE void *
+pipe_buffer_map(struct pipe_screen *screen,
+ struct pipe_buffer *buf,
+ unsigned usage)
+{
+ return screen->winsys->buffer_map(screen->winsys, buf, usage);
+}
+
+static INLINE void
+pipe_buffer_unmap(struct pipe_screen *screen,
+ struct pipe_buffer *buf)
+{
+ screen->winsys->buffer_unmap(screen->winsys, buf);
+}
+
+/* XXX when we're using this everywhere, get rid of
+ * winsys_buffer_reference() above.
+ */
+static INLINE void
+pipe_buffer_reference(struct pipe_screen *screen,
+ struct pipe_buffer **ptr,
+ struct pipe_buffer *buf)
+{
+ winsys_buffer_reference(screen->winsys, ptr, buf);
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* P_INLINES_H */