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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.
*
**************************************************************************/
/**
* @file
*
* Screen, Adapter or GPU
*
* These are driver functions/facilities that are context independent.
*/
#ifndef P_SCREEN_H
#define P_SCREEN_H
#include "pipe/p_compiler.h"
#include "pipe/p_state.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Gallium screen/adapter context. Basically everything
* hardware-specific that doesn't actually require a rendering
* context.
*/
struct pipe_screen {
struct pipe_winsys *winsys;
void (*destroy)( struct pipe_screen * );
const char *(*get_name)( struct pipe_screen * );
const char *(*get_vendor)( struct pipe_screen * );
/**
* Query an integer-valued capability/parameter/limit
* \param param one of PIPE_CAP_x
*/
int (*get_param)( struct pipe_screen *, int param );
/**
* Query a float-valued capability/parameter/limit
* \param param one of PIPE_CAP_x
*/
float (*get_paramf)( struct pipe_screen *, int param );
/**
* Check if the given pipe_format is supported as a texture or
* drawing surface.
* \param tex_usage bitmask of PIPE_TEXTURE_USAGE_*
* \param flags bitmask of PIPE_TEXTURE_GEOM_*
*/
boolean (*is_format_supported)( struct pipe_screen *,
enum pipe_format format,
enum pipe_texture_target target,
unsigned tex_usage,
unsigned geom_flags );
/**
* Create a new texture object, using the given template info.
*/
struct pipe_texture * (*texture_create)(struct pipe_screen *,
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.
*/
struct pipe_texture * (*texture_blanket)(struct pipe_screen *,
const struct pipe_texture *templat,
const unsigned *pitch,
struct pipe_buffer *buffer);
void (*texture_release)(struct pipe_screen *,
struct pipe_texture **pt);
/** Get a surface which is a "view" into a texture */
struct pipe_surface *(*get_tex_surface)(struct pipe_screen *,
struct pipe_texture *texture,
unsigned face, unsigned level,
unsigned zslice,
unsigned usage );
/* Surfaces allocated by the above must be released here:
*/
void (*tex_surface_release)( struct pipe_screen *,
struct pipe_surface ** );
void *(*surface_map)( struct pipe_screen *,
struct pipe_surface *surface,
unsigned flags );
void (*surface_unmap)( struct pipe_screen *,
struct pipe_surface *surface );
};
#ifdef __cplusplus
}
#endif
#endif /* P_SCREEN_H */
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