#endif
+/** Opaque type */
+struct winsys_handle;
/** Opaque type */
struct pipe_fence_handle;
struct pipe_winsys;
struct pipe_buffer;
-
+struct pipe_texture;
+struct pipe_surface;
+struct pipe_video_surface;
+struct pipe_transfer;
/**
*/
float (*get_paramf)( struct pipe_screen *, int param );
+ struct pipe_context * (*context_create)( struct pipe_screen *,
+ void *priv );
+
/**
* Check if the given pipe_format is supported as a texture or
* drawing surface.
const struct pipe_texture *templat);
/**
- * Create a new texture object, using the given template info, but on top of
- * existing memory.
- *
- * It is assumed that the buffer data is layed out according to the expected
- * by the hardware. NULL will be returned if any inconsistency is found.
+ * Create a texture from a winsys_handle. The handle is often created in
+ * another process by first creating a pipe texture and then calling
+ * texture_get_handle.
+ */
+ struct pipe_texture * (*texture_from_handle)(struct pipe_screen *,
+ const struct pipe_texture *templat,
+ struct winsys_handle *handle);
+
+ /**
+ * Get a winsys_handle from a texture. Some platforms/winsys requires
+ * that the texture is created with a special usage flag like
+ * DISPLAYTARGET or PRIMARY.
*/
- struct pipe_texture * (*texture_blanket)(struct pipe_screen *,
- const struct pipe_texture *templat,
- const unsigned *stride,
- struct pipe_buffer *buffer);
+ boolean (*texture_get_handle)(struct pipe_screen *,
+ struct pipe_texture *tex,
+ struct winsys_handle *handle);
+
void (*texture_destroy)(struct pipe_texture *pt);
- /** Get a surface which is a "view" into a texture */
+ /** Get a 2D surface which is a "view" into a texture
+ * \param usage bitmaks of PIPE_BUFFER_USAGE_* read/write flags
+ */
struct pipe_surface *(*get_tex_surface)(struct pipe_screen *,
struct pipe_texture *texture,
unsigned face, unsigned level,
void *ptr,
unsigned bytes);
- /**
- * Allocate storage for a display target surface.
- *
- * Often surfaces which are meant to be blitted to the front screen (i.e.,
- * display targets) must be allocated with special characteristics, memory
- * pools, or obtained directly from the windowing system.
- *
- * This callback is invoked by the pipe_screenwhen creating a texture marked
- * with the PIPE_TEXTURE_USAGE_DISPLAY_TARGET flag to get the underlying
- * buffer storage.
- */
- struct pipe_buffer *(*surface_buffer_create)(struct pipe_screen *screen,
- unsigned width, unsigned height,
- enum pipe_format format,
- unsigned usage,
- unsigned *stride);
/**
/**
* Notify a range that was actually written into.
*
+ * Can only be used if the buffer was mapped with the
+ * PIPE_BUFFER_USAGE_CPU_WRITE and PIPE_BUFFER_USAGE_FLUSH_EXPLICIT flags
+ * set.
+ *
* The range is relative to the buffer start, regardless of the range
* specified to buffer_map_range. This is different from the
* ARB_map_buffer_range semantics because we don't forbid multiple mappings
* of the same buffer (yet).
*
- * If the buffer was mapped for writing and no buffer_flush_mapped_range
- * call was done until the buffer_unmap is called then the pipe driver will
- * assumed that the whole buffer was written. This is for backward
- * compatibility purposes and may affect performance -- the state tracker
- * should always specify exactly what got written while the buffer was
- * mapped.
*/
void (*buffer_flush_mapped_range)( struct pipe_screen *screen,
struct pipe_buffer *buf,
unsigned offset,
unsigned length);
+ /**
+ * Unmap buffer.
+ *
+ * If the buffer was mapped with PIPE_BUFFER_USAGE_CPU_WRITE flag but not
+ * PIPE_BUFFER_USAGE_FLUSH_EXPLICIT then the pipe driver will
+ * assume that the whole buffer was written. This is mostly for backward
+ * compatibility purposes and may affect performance -- the state tracker
+ * should always specify exactly what got written while the buffer was
+ * mapped.
+ */
void (*buffer_unmap)( struct pipe_screen *screen,
struct pipe_buffer *buf );
void (*buffer_destroy)( struct pipe_buffer *buf );
+ /**
+ * Create a video surface suitable for use as a decoding target by the
+ * driver's pipe_video_context.
+ */
+ struct pipe_video_surface*
+ (*video_surface_create)( struct pipe_screen *screen,
+ enum pipe_video_chroma_format chroma_format,
+ unsigned width, unsigned height );
+
+ void (*video_surface_destroy)( struct pipe_video_surface *vsfc );
+
+ /**
+ * Do any special operations to ensure buffer size is correct
+ * \param context_private the private data of the calling context
+ */
+ void (*update_buffer)( struct pipe_screen *ws,
+ void *context_private );
/**
* Do any special operations to ensure frontbuffer contents are
* displayed, eg copy fake frontbuffer.
+ * \param winsys_drawable_handle an opaque handle that the calling context
+ * gets out-of-band
*/
void (*flush_frontbuffer)( struct pipe_screen *screen,
struct pipe_surface *surf,
- void *context_private );
+ void *winsys_drawable_handle );
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