p_context.h revision 4984487bc3338fc351a0631eaa4515e4adbb86a9
1/************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#ifndef PIPE_CONTEXT_H 29#define PIPE_CONTEXT_H 30 31#include "p_state.h" 32 33 34#ifdef __cplusplus 35extern "C" { 36#endif 37 38 39struct pipe_screen; 40 41struct pipe_state_cache; 42 43/* Opaque driver handles: 44 */ 45struct pipe_query; 46 47/** 48 * Gallium rendering context. Basically: 49 * - state setting functions 50 * - VBO drawing functions 51 * - surface functions 52 * - device queries 53 */ 54struct pipe_context { 55 struct pipe_winsys *winsys; 56 struct pipe_screen *screen; 57 58 void *priv; /** context private data (for DRI for example) */ 59 void *draw; /** private, for draw module (temporary? */ 60 61 void (*destroy)( struct pipe_context * ); 62 63 /* 64 * Drawing. 65 * Return false on fallbacks (temporary??) 66 */ 67 boolean (*draw_arrays)( struct pipe_context *pipe, 68 unsigned mode, unsigned start, unsigned count); 69 70 boolean (*draw_elements)( struct pipe_context *pipe, 71 struct pipe_buffer *indexBuffer, 72 unsigned indexSize, 73 unsigned mode, unsigned start, unsigned count); 74 75 76 /** 77 * Query objects 78 */ 79 struct pipe_query *(*create_query)( struct pipe_context *pipe, 80 unsigned query_type ); 81 82 void (*destroy_query)(struct pipe_context *pipe, 83 struct pipe_query *q); 84 85 void (*begin_query)(struct pipe_context *pipe, struct pipe_query *q); 86 void (*end_query)(struct pipe_context *pipe, struct pipe_query *q); 87 88 boolean (*get_query_result)(struct pipe_context *pipe, 89 struct pipe_query *q, 90 boolean wait, 91 uint64 *result); 92 93 /* 94 * State functions 95 */ 96 void * (*create_blend_state)(struct pipe_context *, 97 const struct pipe_blend_state *); 98 void (*bind_blend_state)(struct pipe_context *, void *); 99 void (*delete_blend_state)(struct pipe_context *, void *); 100 101 void * (*create_sampler_state)(struct pipe_context *, 102 const struct pipe_sampler_state *); 103 void (*bind_sampler_states)(struct pipe_context *, unsigned num, void **); 104 void (*delete_sampler_state)(struct pipe_context *, void *); 105 106 void * (*create_rasterizer_state)(struct pipe_context *, 107 const struct pipe_rasterizer_state *); 108 void (*bind_rasterizer_state)(struct pipe_context *, void *); 109 void (*delete_rasterizer_state)(struct pipe_context *, void *); 110 111 void * (*create_depth_stencil_alpha_state)(struct pipe_context *, 112 const struct pipe_depth_stencil_alpha_state *); 113 void (*bind_depth_stencil_alpha_state)(struct pipe_context *, void *); 114 void (*delete_depth_stencil_alpha_state)(struct pipe_context *, void *); 115 116 void * (*create_fs_state)(struct pipe_context *, 117 const struct pipe_shader_state *); 118 void (*bind_fs_state)(struct pipe_context *, void *); 119 void (*delete_fs_state)(struct pipe_context *, void *); 120 121 void * (*create_vs_state)(struct pipe_context *, 122 const struct pipe_shader_state *); 123 void (*bind_vs_state)(struct pipe_context *, void *); 124 void (*delete_vs_state)(struct pipe_context *, void *); 125 126 /* The following look more properties than states. 127 * maybe combine a few of them into states or pass them 128 * in the bind calls to the state */ 129 void (*set_blend_color)( struct pipe_context *, 130 const struct pipe_blend_color * ); 131 132 void (*set_clip_state)( struct pipe_context *, 133 const struct pipe_clip_state * ); 134 135 void (*set_constant_buffer)( struct pipe_context *, 136 uint shader, uint index, 137 const struct pipe_constant_buffer *buf ); 138 139 void (*set_framebuffer_state)( struct pipe_context *, 140 const struct pipe_framebuffer_state * ); 141 142 void (*set_polygon_stipple)( struct pipe_context *, 143 const struct pipe_poly_stipple * ); 144 145 void (*set_scissor_state)( struct pipe_context *, 146 const struct pipe_scissor_state * ); 147 148 149 /* Currently a sampler is constrained to sample from a single texture: 150 */ 151 void (*set_sampler_textures)( struct pipe_context *, 152 unsigned num, 153 struct pipe_texture ** ); 154 155 void (*set_viewport_state)( struct pipe_context *, 156 const struct pipe_viewport_state * ); 157 158 /* 159 * Vertex arrays 160 */ 161 void (*set_vertex_buffer)( struct pipe_context *, 162 unsigned index, 163 const struct pipe_vertex_buffer * ); 164 165 void (*set_vertex_element)( struct pipe_context *, 166 unsigned index, 167 const struct pipe_vertex_element * ); 168 169 170 /* 171 * Surface functions 172 */ 173 174 void (*surface_copy)(struct pipe_context *pipe, 175 unsigned do_flip, /*<< flip surface contents vertically */ 176 struct pipe_surface *dest, 177 unsigned destx, unsigned desty, 178 struct pipe_surface *src, /* don't make this const - 179 need to map/unmap */ 180 unsigned srcx, unsigned srcy, 181 unsigned width, unsigned height); 182 183 void (*surface_fill)(struct pipe_context *pipe, 184 struct pipe_surface *dst, 185 unsigned dstx, unsigned dsty, 186 unsigned width, unsigned height, 187 unsigned value); 188 189 void (*clear)(struct pipe_context *pipe, 190 struct pipe_surface *ps, 191 unsigned clearValue); 192 193 /** 194 * Called when texture data is changed. 195 */ 196 void (*texture_update)(struct pipe_context *pipe, 197 struct pipe_texture *texture, 198 uint face, uint dirtyLevelsMask); 199 200 201 202 /* Flush rendering: 203 */ 204 void (*flush)( struct pipe_context *pipe, 205 unsigned flags ); 206}; 207 208 209#ifdef __cplusplus 210} 211#endif 212 213#endif /* PIPE_CONTEXT_H */ 214