228 lines
7.5 KiB
C
228 lines
7.5 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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*
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* Screen, Adapter or GPU
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*
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* These are driver functions/facilities that are context independent.
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*/
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#ifndef P_SCREEN_H
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#define P_SCREEN_H
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#include "pipe/p_compiler.h"
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#include "pipe/p_format.h"
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#include "pipe/p_defines.h"
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#include "pipe/p_video_enums.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Opaque types */
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struct winsys_handle;
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struct pipe_fence_handle;
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struct pipe_resource;
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struct pipe_surface;
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struct pipe_transfer;
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/**
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* Gallium screen/adapter context. Basically everything
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* hardware-specific that doesn't actually require a rendering
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* context.
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*/
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struct pipe_screen {
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void (*destroy)( struct pipe_screen * );
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const char *(*get_name)( struct pipe_screen * );
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const char *(*get_vendor)( struct pipe_screen * );
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/**
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* Query an integer-valued capability/parameter/limit
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* \param param one of PIPE_CAP_x
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*/
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int (*get_param)( struct pipe_screen *, enum pipe_cap param );
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/**
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* Query a float-valued capability/parameter/limit
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* \param param one of PIPE_CAP_x
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*/
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float (*get_paramf)( struct pipe_screen *, enum pipe_capf param );
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/**
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* Query a per-shader-stage integer-valued capability/parameter/limit
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* \param param one of PIPE_CAP_x
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*/
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int (*get_shader_param)( struct pipe_screen *, unsigned shader, enum pipe_shader_cap param );
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/**
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* Query an integer-valued capability/parameter/limit for a codec/profile
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* \param param one of PIPE_VIDEO_CAP_x
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*/
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int (*get_video_param)( struct pipe_screen *,
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enum pipe_video_profile profile,
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enum pipe_video_cap param );
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/**
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* Query a compute-specific capability/parameter/limit.
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* \param param one of PIPE_COMPUTE_CAP_x
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* \param ret pointer to a preallocated buffer that will be
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* initialized to the parameter value, or NULL.
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* \return size in bytes of the parameter value that would be
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* returned.
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*/
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int (*get_compute_param)(struct pipe_screen *,
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enum pipe_compute_cap param,
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void *ret);
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/**
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* Query a timestamp in nanoseconds. The returned value should match
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* PIPE_QUERY_TIMESTAMP. This function returns immediately and doesn't
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* wait for rendering to complete (which cannot be achieved with queries).
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*/
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uint64_t (*get_timestamp)(struct pipe_screen *);
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struct pipe_context * (*context_create)( struct pipe_screen *,
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void *priv );
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/**
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* Check if the given pipe_format is supported as a texture or
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* drawing surface.
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* \param bindings bitmask of PIPE_BIND_*
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*/
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boolean (*is_format_supported)( struct pipe_screen *,
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enum pipe_format format,
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enum pipe_texture_target target,
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unsigned sample_count,
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unsigned bindings );
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/**
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* Check if the given pipe_format is supported as output for this codec/profile.
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* \param profile profile to check, may also be PIPE_VIDEO_PROFILE_UNKNOWN
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*/
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boolean (*is_video_format_supported)( struct pipe_screen *,
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enum pipe_format format,
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enum pipe_video_profile profile );
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/**
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* Check if we can actually create the given resource (test the dimension,
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* overall size, etc). Used to implement proxy textures.
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* \return TRUE if size is OK, FALSE if too large.
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*/
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boolean (*can_create_resource)(struct pipe_screen *screen,
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const struct pipe_resource *templat);
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/**
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* Create a new texture object, using the given template info.
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*/
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struct pipe_resource * (*resource_create)(struct pipe_screen *,
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const struct pipe_resource *templat);
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/**
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* Create a texture from a winsys_handle. The handle is often created in
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* another process by first creating a pipe texture and then calling
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* resource_get_handle.
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*/
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struct pipe_resource * (*resource_from_handle)(struct pipe_screen *,
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const struct pipe_resource *templat,
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struct winsys_handle *handle);
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/**
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* Get a winsys_handle from a texture. Some platforms/winsys requires
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* that the texture is created with a special usage flag like
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* DISPLAYTARGET or PRIMARY.
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*/
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boolean (*resource_get_handle)(struct pipe_screen *,
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struct pipe_resource *tex,
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struct winsys_handle *handle);
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void (*resource_destroy)(struct pipe_screen *,
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struct pipe_resource *pt);
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/**
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* Do any special operations to ensure frontbuffer contents are
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* displayed, eg copy fake frontbuffer.
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* \param winsys_drawable_handle an opaque handle that the calling context
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* gets out-of-band
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*/
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void (*flush_frontbuffer)( struct pipe_screen *screen,
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struct pipe_resource *resource,
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unsigned level, unsigned layer,
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void *winsys_drawable_handle );
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/** Set ptr = fence, with reference counting */
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void (*fence_reference)( struct pipe_screen *screen,
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struct pipe_fence_handle **ptr,
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struct pipe_fence_handle *fence );
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/**
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* Checks whether the fence has been signalled.
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*/
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boolean (*fence_signalled)( struct pipe_screen *screen,
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struct pipe_fence_handle *fence );
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/**
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* Wait for the fence to finish.
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* \param timeout in nanoseconds (may be PIPE_TIMEOUT_INFINITE).
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*/
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boolean (*fence_finish)( struct pipe_screen *screen,
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struct pipe_fence_handle *fence,
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uint64_t timeout );
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/**
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* Returns a driver-specific query.
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*
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* If \p info is NULL, the number of available queries is returned.
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* Otherwise, the driver query at the specified \p index is returned
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* in \p info. The function returns non-zero on success.
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*/
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int (*get_driver_query_info)(struct pipe_screen *screen,
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unsigned index,
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struct pipe_driver_query_info *info);
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* P_SCREEN_H */
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