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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 PIPE_CONTEXT_H
#define PIPE_CONTEXT_H
#include "p_state.h"
#ifdef __cplusplus
extern "C" {
#endif
struct pipe_screen;
struct pipe_state_cache;
/* Opaque driver handles:
*/
struct pipe_query;
/**
* Gallium rendering context. Basically:
* - state setting functions
* - VBO drawing functions
* - surface functions
* - device queries
*/
struct pipe_context {
struct pipe_winsys *winsys;
struct pipe_screen *screen;
void *priv; /** context private data (for DRI for example) */
void *draw; /** private, for draw module (temporary? */
void (*destroy)( struct pipe_context * );
/*
* Drawing.
* Return false on fallbacks (temporary??)
*/
boolean (*draw_arrays)( struct pipe_context *pipe,
unsigned mode, unsigned start, unsigned count);
boolean (*draw_elements)( struct pipe_context *pipe,
struct pipe_buffer *indexBuffer,
unsigned indexSize,
unsigned mode, unsigned start, unsigned count);
/**
* Query objects
*/
struct pipe_query *(*create_query)( struct pipe_context *pipe,
unsigned query_type );
void (*destroy_query)(struct pipe_context *pipe,
struct pipe_query *q);
void (*begin_query)(struct pipe_context *pipe, struct pipe_query *q);
void (*end_query)(struct pipe_context *pipe, struct pipe_query *q);
boolean (*get_query_result)(struct pipe_context *pipe,
struct pipe_query *q,
boolean wait,
uint64 *result);
/*
* State functions
*/
void * (*create_blend_state)(struct pipe_context *,
const struct pipe_blend_state *);
void (*bind_blend_state)(struct pipe_context *, void *);
void (*delete_blend_state)(struct pipe_context *, void *);
void * (*create_sampler_state)(struct pipe_context *,
const struct pipe_sampler_state *);
void (*bind_sampler_states)(struct pipe_context *, unsigned num, void **);
void (*delete_sampler_state)(struct pipe_context *, void *);
void * (*create_rasterizer_state)(struct pipe_context *,
const struct pipe_rasterizer_state *);
void (*bind_rasterizer_state)(struct pipe_context *, void *);
void (*delete_rasterizer_state)(struct pipe_context *, void *);
void * (*create_depth_stencil_alpha_state)(struct pipe_context *,
const struct pipe_depth_stencil_alpha_state *);
void (*bind_depth_stencil_alpha_state)(struct pipe_context *, void *);
void (*delete_depth_stencil_alpha_state)(struct pipe_context *, void *);
void * (*create_fs_state)(struct pipe_context *,
const struct pipe_shader_state *);
void (*bind_fs_state)(struct pipe_context *, void *);
void (*delete_fs_state)(struct pipe_context *, void *);
void * (*create_vs_state)(struct pipe_context *,
const struct pipe_shader_state *);
void (*bind_vs_state)(struct pipe_context *, void *);
void (*delete_vs_state)(struct pipe_context *, void *);
/* The following look more properties than states.
* maybe combine a few of them into states or pass them
* in the bind calls to the state */
void (*set_blend_color)( struct pipe_context *,
const struct pipe_blend_color * );
void (*set_clip_state)( struct pipe_context *,
const struct pipe_clip_state * );
void (*set_constant_buffer)( struct pipe_context *,
uint shader, uint index,
const struct pipe_constant_buffer *buf );
void (*set_framebuffer_state)( struct pipe_context *,
const struct pipe_framebuffer_state * );
void (*set_polygon_stipple)( struct pipe_context *,
const struct pipe_poly_stipple * );
void (*set_scissor_state)( struct pipe_context *,
const struct pipe_scissor_state * );
/* Currently a sampler is constrained to sample from a single texture:
*/
void (*set_sampler_textures)( struct pipe_context *,
unsigned num,
struct pipe_texture ** );
void (*set_viewport_state)( struct pipe_context *,
const struct pipe_viewport_state * );
/*
* Vertex arrays
*/
void (*set_vertex_buffer)( struct pipe_context *,
unsigned index,
const struct pipe_vertex_buffer * );
void (*set_vertex_element)( struct pipe_context *,
unsigned index,
const struct pipe_vertex_element * );
/*
* Surface functions
*/
void (*surface_copy)(struct pipe_context *pipe,
unsigned do_flip, /*<< flip surface contents vertically */
struct pipe_surface *dest,
unsigned destx, unsigned desty,
struct pipe_surface *src, /* don't make this const -
need to map/unmap */
unsigned srcx, unsigned srcy,
unsigned width, unsigned height);
void (*surface_fill)(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height,
unsigned value);
void (*clear)(struct pipe_context *pipe,
struct pipe_surface *ps,
unsigned clearValue);
/**
* Called when texture data is changed.
* Note: we could pass some hints about which mip levels or cube faces
* have changed...
* XXX this may go away - could pass a 'write' flag to get_tex_surface()
*/
void (*texture_update)(struct pipe_context *pipe,
struct pipe_texture *texture);
/* Flush rendering:
*/
void (*flush)( struct pipe_context *pipe,
unsigned flags );
};
#ifdef __cplusplus
}
#endif
#endif /* PIPE_CONTEXT_H */
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