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552 lines
22 KiB
C
552 lines
22 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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#ifndef PIPE_CONTEXT_H
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#define PIPE_CONTEXT_H
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#include "p_compiler.h"
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#include "p_format.h"
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#include "p_video_enums.h"
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#include "p_defines.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct pipe_blend_color;
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struct pipe_blend_state;
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struct pipe_blit_info;
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struct pipe_box;
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struct pipe_clip_state;
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struct pipe_constant_buffer;
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struct pipe_depth_stencil_alpha_state;
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struct pipe_draw_info;
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struct pipe_fence_handle;
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struct pipe_framebuffer_state;
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struct pipe_index_buffer;
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struct pipe_query;
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struct pipe_poly_stipple;
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struct pipe_rasterizer_state;
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struct pipe_resolve_info;
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struct pipe_resource;
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struct pipe_sampler_state;
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struct pipe_sampler_view;
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struct pipe_scissor_state;
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struct pipe_shader_state;
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struct pipe_stencil_ref;
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struct pipe_stream_output_target;
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struct pipe_surface;
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struct pipe_transfer;
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struct pipe_vertex_buffer;
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struct pipe_vertex_element;
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struct pipe_video_buffer;
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struct pipe_video_decoder;
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struct pipe_viewport_state;
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struct pipe_compute_state;
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union pipe_color_union;
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union pipe_query_result;
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/**
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* Gallium rendering context. Basically:
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* - state setting functions
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* - VBO drawing functions
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* - surface functions
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*/
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struct pipe_context {
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struct pipe_screen *screen;
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void *priv; /**< context private data (for DRI for example) */
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void *draw; /**< private, for draw module (temporary?) */
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void (*destroy)( struct pipe_context * );
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/**
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* VBO drawing
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*/
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/*@{*/
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void (*draw_vbo)( struct pipe_context *pipe,
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const struct pipe_draw_info *info );
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/*@}*/
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/**
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* Predicate subsequent rendering on occlusion query result
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* \param query the query predicate, or NULL if no predicate
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* \param condition whether to skip on FALSE or TRUE query results
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* \param mode one of PIPE_RENDER_COND_x
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*/
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void (*render_condition)( struct pipe_context *pipe,
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struct pipe_query *query,
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boolean condition,
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uint mode );
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/**
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* Query objects
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*/
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/*@{*/
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struct pipe_query *(*create_query)( struct pipe_context *pipe,
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unsigned query_type );
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void (*destroy_query)(struct pipe_context *pipe,
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struct pipe_query *q);
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void (*begin_query)(struct pipe_context *pipe, struct pipe_query *q);
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void (*end_query)(struct pipe_context *pipe, struct pipe_query *q);
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/**
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* Get results of a query.
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* \param wait if true, this query will block until the result is ready
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* \return TRUE if results are ready, FALSE otherwise
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*/
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boolean (*get_query_result)(struct pipe_context *pipe,
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struct pipe_query *q,
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boolean wait,
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union pipe_query_result *result);
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/*@}*/
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/**
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* State functions (create/bind/destroy state objects)
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*/
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/*@{*/
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void * (*create_blend_state)(struct pipe_context *,
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const struct pipe_blend_state *);
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void (*bind_blend_state)(struct pipe_context *, void *);
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void (*delete_blend_state)(struct pipe_context *, void *);
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void * (*create_sampler_state)(struct pipe_context *,
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const struct pipe_sampler_state *);
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void (*bind_fragment_sampler_states)(struct pipe_context *,
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unsigned num_samplers,
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void **samplers);
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void (*bind_vertex_sampler_states)(struct pipe_context *,
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unsigned num_samplers,
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void **samplers);
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void (*bind_geometry_sampler_states)(struct pipe_context *,
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unsigned num_samplers,
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void **samplers);
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void (*bind_compute_sampler_states)(struct pipe_context *,
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unsigned start_slot,
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unsigned num_samplers,
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void **samplers);
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void (*delete_sampler_state)(struct pipe_context *, void *);
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void * (*create_rasterizer_state)(struct pipe_context *,
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const struct pipe_rasterizer_state *);
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void (*bind_rasterizer_state)(struct pipe_context *, void *);
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void (*delete_rasterizer_state)(struct pipe_context *, void *);
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void * (*create_depth_stencil_alpha_state)(struct pipe_context *,
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const struct pipe_depth_stencil_alpha_state *);
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void (*bind_depth_stencil_alpha_state)(struct pipe_context *, void *);
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void (*delete_depth_stencil_alpha_state)(struct pipe_context *, void *);
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void * (*create_fs_state)(struct pipe_context *,
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const struct pipe_shader_state *);
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void (*bind_fs_state)(struct pipe_context *, void *);
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void (*delete_fs_state)(struct pipe_context *, void *);
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void * (*create_vs_state)(struct pipe_context *,
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const struct pipe_shader_state *);
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void (*bind_vs_state)(struct pipe_context *, void *);
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void (*delete_vs_state)(struct pipe_context *, void *);
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void * (*create_gs_state)(struct pipe_context *,
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const struct pipe_shader_state *);
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void (*bind_gs_state)(struct pipe_context *, void *);
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void (*delete_gs_state)(struct pipe_context *, void *);
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void * (*create_vertex_elements_state)(struct pipe_context *,
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unsigned num_elements,
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const struct pipe_vertex_element *);
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void (*bind_vertex_elements_state)(struct pipe_context *, void *);
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void (*delete_vertex_elements_state)(struct pipe_context *, void *);
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/*@}*/
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/**
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* Parameter-like state (or properties)
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*/
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/*@{*/
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void (*set_blend_color)( struct pipe_context *,
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const struct pipe_blend_color * );
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void (*set_stencil_ref)( struct pipe_context *,
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const struct pipe_stencil_ref * );
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void (*set_sample_mask)( struct pipe_context *,
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unsigned sample_mask );
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void (*set_clip_state)( struct pipe_context *,
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const struct pipe_clip_state * );
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void (*set_constant_buffer)( struct pipe_context *,
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uint shader, uint index,
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struct pipe_constant_buffer *buf );
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void (*set_framebuffer_state)( struct pipe_context *,
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const struct pipe_framebuffer_state * );
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void (*set_polygon_stipple)( struct pipe_context *,
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const struct pipe_poly_stipple * );
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void (*set_scissor_states)( struct pipe_context *,
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unsigned start_slot,
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unsigned num_scissors,
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const struct pipe_scissor_state * );
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void (*set_viewport_states)( struct pipe_context *,
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unsigned start_slot,
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unsigned num_viewports,
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const struct pipe_viewport_state *);
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void (*set_fragment_sampler_views)(struct pipe_context *,
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unsigned num_views,
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struct pipe_sampler_view **);
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void (*set_vertex_sampler_views)(struct pipe_context *,
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unsigned num_views,
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struct pipe_sampler_view **);
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void (*set_geometry_sampler_views)(struct pipe_context *,
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unsigned num_views,
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struct pipe_sampler_view **);
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void (*set_compute_sampler_views)(struct pipe_context *,
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unsigned start_slot, unsigned num_views,
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struct pipe_sampler_view **);
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/**
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* Bind an array of shader resources that will be used by the
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* graphics pipeline. Any resources that were previously bound to
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* the specified range will be unbound after this call.
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*
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* \param start first resource to bind.
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* \param count number of consecutive resources to bind.
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* \param resources array of pointers to the resources to bind, it
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* should contain at least \a count elements
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* unless it's NULL, in which case no new
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* resources will be bound.
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*/
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void (*set_shader_resources)(struct pipe_context *,
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unsigned start, unsigned count,
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struct pipe_surface **resources);
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void (*set_vertex_buffers)( struct pipe_context *,
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unsigned start_slot,
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unsigned num_buffers,
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const struct pipe_vertex_buffer * );
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void (*set_index_buffer)( struct pipe_context *pipe,
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const struct pipe_index_buffer * );
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/*@}*/
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/**
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* Stream output functions.
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*/
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/*@{*/
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struct pipe_stream_output_target *(*create_stream_output_target)(
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struct pipe_context *,
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struct pipe_resource *,
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unsigned buffer_offset,
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unsigned buffer_size);
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void (*stream_output_target_destroy)(struct pipe_context *,
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struct pipe_stream_output_target *);
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void (*set_stream_output_targets)(struct pipe_context *,
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unsigned num_targets,
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struct pipe_stream_output_target **targets,
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unsigned append_bitmask);
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/*@}*/
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/**
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* Resource functions for blit-like functionality
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*
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* If a driver supports multisampling, blit must implement color resolve.
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*/
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/*@{*/
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/**
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* Copy a block of pixels from one resource to another.
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* The resource must be of the same format.
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* Resources with nr_samples > 1 are not allowed.
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*/
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void (*resource_copy_region)(struct pipe_context *pipe,
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struct pipe_resource *dst,
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unsigned dst_level,
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unsigned dstx, unsigned dsty, unsigned dstz,
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struct pipe_resource *src,
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unsigned src_level,
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const struct pipe_box *src_box);
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/* Optimal hardware path for blitting pixels.
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* Scaling, format conversion, up- and downsampling (resolve) are allowed.
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*/
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void (*blit)(struct pipe_context *pipe,
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const struct pipe_blit_info *info);
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/*@}*/
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/**
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* Clear the specified set of currently bound buffers to specified values.
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* The entire buffers are cleared (no scissor, no colormask, etc).
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*
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* \param buffers bitfield of PIPE_CLEAR_* values.
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* \param color pointer to a union of fiu array for each of r, g, b, a.
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* \param depth depth clear value in [0,1].
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* \param stencil stencil clear value
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*/
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void (*clear)(struct pipe_context *pipe,
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unsigned buffers,
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const union pipe_color_union *color,
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double depth,
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unsigned stencil);
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/**
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* Clear a color rendertarget surface.
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* \param color pointer to an union of fiu array for each of r, g, b, a.
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*/
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void (*clear_render_target)(struct pipe_context *pipe,
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struct pipe_surface *dst,
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const union pipe_color_union *color,
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unsigned dstx, unsigned dsty,
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unsigned width, unsigned height);
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/**
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* Clear a depth-stencil surface.
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* \param clear_flags bitfield of PIPE_CLEAR_DEPTH/STENCIL values.
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* \param depth depth clear value in [0,1].
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* \param stencil stencil clear value
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*/
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void (*clear_depth_stencil)(struct pipe_context *pipe,
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struct pipe_surface *dst,
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unsigned clear_flags,
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double depth,
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unsigned stencil,
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unsigned dstx, unsigned dsty,
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unsigned width, unsigned height);
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/** Flush draw commands
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*
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* \param flags bitfield of enum pipe_flush_flags values.
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*/
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void (*flush)(struct pipe_context *pipe,
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struct pipe_fence_handle **fence,
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unsigned flags);
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/**
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* Create a view on a texture to be used by a shader stage.
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*/
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struct pipe_sampler_view * (*create_sampler_view)(struct pipe_context *ctx,
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struct pipe_resource *texture,
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const struct pipe_sampler_view *templat);
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void (*sampler_view_destroy)(struct pipe_context *ctx,
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struct pipe_sampler_view *view);
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/**
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* Get a surface which is a "view" into a resource, used by
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* render target / depth stencil stages.
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*/
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struct pipe_surface *(*create_surface)(struct pipe_context *ctx,
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struct pipe_resource *resource,
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const struct pipe_surface *templat);
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void (*surface_destroy)(struct pipe_context *ctx,
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struct pipe_surface *);
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/**
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* Map a resource.
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*
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* Transfers are (by default) context-private and allow uploads to be
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* interleaved with rendering.
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*
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* out_transfer will contain the transfer object that must be passed
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* to all the other transfer functions. It also contains useful
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* information (like texture strides).
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*/
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void *(*transfer_map)(struct pipe_context *,
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struct pipe_resource *resource,
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unsigned level,
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unsigned usage, /* a combination of PIPE_TRANSFER_x */
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const struct pipe_box *,
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struct pipe_transfer **out_transfer);
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/* If transfer was created with WRITE|FLUSH_EXPLICIT, only the
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* regions specified with this call are guaranteed to be written to
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* the resource.
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*/
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void (*transfer_flush_region)( struct pipe_context *,
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struct pipe_transfer *transfer,
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const struct pipe_box *);
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void (*transfer_unmap)(struct pipe_context *,
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struct pipe_transfer *transfer);
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/* One-shot transfer operation with data supplied in a user
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* pointer. XXX: strides??
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*/
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void (*transfer_inline_write)( struct pipe_context *,
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struct pipe_resource *,
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unsigned level,
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unsigned usage, /* a combination of PIPE_TRANSFER_x */
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const struct pipe_box *,
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const void *data,
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unsigned stride,
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unsigned layer_stride);
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/**
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* Flush any pending framebuffer writes and invalidate texture caches.
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*/
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void (*texture_barrier)(struct pipe_context *);
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/**
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* Creates a video decoder for a specific video codec/profile
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*/
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struct pipe_video_decoder *(*create_video_decoder)( struct pipe_context *context,
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enum pipe_video_profile profile,
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enum pipe_video_entrypoint entrypoint,
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enum pipe_video_chroma_format chroma_format,
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unsigned width, unsigned height, unsigned max_references,
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bool expect_chunked_decode);
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/**
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* Creates a video buffer as decoding target
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*/
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struct pipe_video_buffer *(*create_video_buffer)( struct pipe_context *context,
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const struct pipe_video_buffer *templat );
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/**
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* Compute kernel execution
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*/
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/*@{*/
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/**
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* Define the compute program and parameters to be used by
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* pipe_context::launch_grid.
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*/
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void *(*create_compute_state)(struct pipe_context *context,
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const struct pipe_compute_state *);
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void (*bind_compute_state)(struct pipe_context *, void *);
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void (*delete_compute_state)(struct pipe_context *, void *);
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/**
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* Bind an array of shader resources that will be used by the
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* compute program. Any resources that were previously bound to
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* the specified range will be unbound after this call.
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*
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* \param start first resource to bind.
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* \param count number of consecutive resources to bind.
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* \param resources array of pointers to the resources to bind, it
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* should contain at least \a count elements
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* unless it's NULL, in which case no new
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* resources will be bound.
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*/
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void (*set_compute_resources)(struct pipe_context *,
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unsigned start, unsigned count,
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struct pipe_surface **resources);
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/**
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* Bind an array of buffers to be mapped into the address space of
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* the GLOBAL resource. Any buffers that were previously bound
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* between [first, first + count - 1] are unbound after this call.
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*
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* \param first first buffer to map.
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* \param count number of consecutive buffers to map.
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* \param resources array of pointers to the buffers to map, it
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* should contain at least \a count elements
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* unless it's NULL, in which case no new
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* resources will be bound.
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* \param handles array of pointers to the memory locations that
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* will be filled with the respective base
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* addresses each buffer will be mapped to. It
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* should contain at least \a count elements,
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* unless \a resources is NULL in which case \a
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* handles should be NULL as well.
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*
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* Note that the driver isn't required to make any guarantees about
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* the contents of the \a handles array being valid anytime except
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* during the subsequent calls to pipe_context::launch_grid. This
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* means that the only sensible location handles[i] may point to is
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* somewhere within the INPUT buffer itself. This is so to
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* accommodate implementations that lack virtual memory but
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* nevertheless migrate buffers on the fly, leading to resource
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* base addresses that change on each kernel invocation or are
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* unknown to the pipe driver.
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*/
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void (*set_global_binding)(struct pipe_context *context,
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unsigned first, unsigned count,
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struct pipe_resource **resources,
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uint32_t **handles);
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/**
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* Launch the compute kernel starting from instruction \a pc of the
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* currently bound compute program.
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*
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* \a grid_layout and \a block_layout are arrays of size \a
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* PIPE_COMPUTE_CAP_GRID_DIMENSION that determine the layout of the
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* grid (in block units) and working block (in thread units) to be
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* used, respectively.
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*
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* \a pc For drivers that use PIPE_SHADER_IR_LLVM as their prefered IR,
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* this value will be the index of the kernel in the opencl.kernels
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* metadata list.
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*
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* \a input will be used to initialize the INPUT resource, and it
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* should point to a buffer of at least
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* pipe_compute_state::req_input_mem bytes.
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*/
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void (*launch_grid)(struct pipe_context *context,
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const uint *block_layout, const uint *grid_layout,
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uint32_t pc, const void *input);
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/*@}*/
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/**
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* Get sample position for an individual sample point.
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|
*
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* \param sample_count - total number of samples
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|
* \param sample_index - sample to get the position values for
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* \param out_value - return value of 2 floats for x and y position for
|
|
* requested sample.
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|
*/
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|
void (*get_sample_position)(struct pipe_context *context,
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|
unsigned sample_count,
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|
unsigned sample_index,
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|
float *out_value);
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|
};
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|
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|
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#ifdef __cplusplus
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|
}
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#endif
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|
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#endif /* PIPE_CONTEXT_H */
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