diff options
Diffstat (limited to 'src/gallium/include/pipe/p_screen.h')
| -rw-r--r-- | src/gallium/include/pipe/p_screen.h | 137 |
1 files changed, 130 insertions, 7 deletions
diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h index b15affef7a..341d1caea0 100644 --- a/src/gallium/include/pipe/p_screen.h +++ b/src/gallium/include/pipe/p_screen.h @@ -26,6 +26,8 @@ **************************************************************************/ /** + * @file + * * Screen, Adapter or GPU * * These are driver functions/facilities that are context independent. @@ -37,7 +39,8 @@ #include "pipe/p_compiler.h" -#include "pipe/p_state.h" +#include "pipe/p_format.h" +#include "pipe/p_defines.h" @@ -46,6 +49,12 @@ extern "C" { #endif +/** Opaque type */ +struct pipe_fence_handle; +struct pipe_winsys; +struct pipe_buffer; + + /** * Gallium screen/adapter context. Basically everything @@ -101,7 +110,7 @@ struct pipe_screen { */ struct pipe_texture * (*texture_blanket)(struct pipe_screen *, const struct pipe_texture *templat, - const unsigned *pitch, + const unsigned *stride, struct pipe_buffer *buffer); void (*texture_release)(struct pipe_screen *, @@ -120,13 +129,127 @@ struct pipe_screen { struct pipe_surface ** ); - void *(*surface_map)( struct pipe_screen *, - struct pipe_surface *surface, - unsigned flags ); + /** Get a transfer object for transferring data to/from a texture */ + struct pipe_transfer *(*get_tex_transfer)(struct pipe_screen *, + struct pipe_texture *texture, + unsigned face, unsigned level, + unsigned zslice, + enum pipe_transfer_usage usage, + unsigned x, unsigned y, + unsigned w, unsigned h); - void (*surface_unmap)( struct pipe_screen *, - struct pipe_surface *surface ); + /* Transfer objects allocated by the above must be released here: + */ + void (*tex_transfer_release)( struct pipe_screen *, + struct pipe_transfer ** ); + void *(*transfer_map)( struct pipe_screen *, + struct pipe_transfer *transfer ); + + void (*transfer_unmap)( struct pipe_screen *, + struct pipe_transfer *transfer ); + + + /** + * Buffer management. Buffer attributes are mostly fixed over its lifetime. + * + */ + struct pipe_buffer *(*buffer_create)( struct pipe_screen *screen, + unsigned alignment, + unsigned usage, + unsigned size ); + + /** + * Create a buffer that wraps user-space data. + * + * Effectively this schedules a delayed call to buffer_create + * followed by an upload of the data at *some point in the future*, + * or perhaps never. Basically the allocate/upload is delayed + * until the buffer is actually passed to hardware. + * + * The intention is to provide a quick way to turn regular data + * into a buffer, and secondly to avoid a copy operation if that + * data subsequently turns out to be only accessed by the CPU. + * + * Common example is OpenGL vertex buffers that are subsequently + * processed either by software TNL in the driver or by passing to + * hardware. + * + * XXX: What happens if the delayed call to buffer_create() fails? + * + * Note that ptr may be accessed at any time upto the time when the + * buffer is destroyed, so the data must not be freed before then. + */ + struct pipe_buffer *(*user_buffer_create)(struct pipe_screen *screen, + 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); + + + /** + * Map the entire data store of a buffer object into the client's address. + * flags is bitmask of PIPE_BUFFER_USAGE_CPU_READ/WRITE flags. + */ + void *(*buffer_map)( struct pipe_screen *screen, + struct pipe_buffer *buf, + unsigned usage ); + + void (*buffer_unmap)( struct pipe_screen *screen, + struct pipe_buffer *buf ); + + void (*buffer_destroy)( struct pipe_screen *screen, + struct pipe_buffer *buf ); + + + /** + * Do any special operations to ensure frontbuffer contents are + * displayed, eg copy fake frontbuffer. + */ + void (*flush_frontbuffer)( struct pipe_screen *screen, + struct pipe_surface *surf, + void *context_private ); + + + + /** Set ptr = fence, with reference counting */ + void (*fence_reference)( struct pipe_screen *screen, + struct pipe_fence_handle **ptr, + struct pipe_fence_handle *fence ); + + /** + * Checks whether the fence has been signalled. + * \param flags driver-specific meaning + * \return zero on success. + */ + int (*fence_signalled)( struct pipe_screen *screen, + struct pipe_fence_handle *fence, + unsigned flag ); + + /** + * Wait for the fence to finish. + * \param flags driver-specific meaning + * \return zero on success. + */ + int (*fence_finish)( struct pipe_screen *screen, + struct pipe_fence_handle *fence, + unsigned flag ); + }; |