1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #ifndef PIPE_CONTEXT_H
29 #define PIPE_CONTEXT_H
40 struct pipe_fence_handle
;
41 struct pipe_state_cache
;
46 * Gallium rendering context. Basically:
47 * - state setting functions
48 * - VBO drawing functions
52 struct pipe_winsys
*winsys
;
53 struct pipe_screen
*screen
;
55 void *priv
; /**< context private data (for DRI for example) */
56 void *draw
; /**< private, for draw module (temporary?) */
58 void (*destroy
)( struct pipe_context
* );
64 void (*draw_arrays
)( struct pipe_context
*pipe
,
65 unsigned mode
, unsigned start
, unsigned count
);
67 void (*draw_elements
)( struct pipe_context
*pipe
,
68 struct pipe_resource
*indexBuffer
,
71 unsigned mode
, unsigned start
, unsigned count
);
73 void (*draw_arrays_instanced
)(struct pipe_context
*pipe
,
77 unsigned startInstance
,
78 unsigned instanceCount
);
80 void (*draw_elements_instanced
)(struct pipe_context
*pipe
,
81 struct pipe_resource
*indexBuffer
,
87 unsigned startInstance
,
88 unsigned instanceCount
);
90 /* XXX: this is (probably) a temporary entrypoint, as the range
91 * information should be available from the vertex_buffer state.
92 * Using this to quickly evaluate a specialized path in the draw
95 void (*draw_range_elements
)( struct pipe_context
*pipe
,
96 struct pipe_resource
*indexBuffer
,
107 * Predicate subsequent rendering on occlusion query result
108 * \param query the query predicate, or NULL if no predicate
109 * \param mode one of PIPE_RENDER_COND_x
111 void (*render_condition
)( struct pipe_context
*pipe
,
112 struct pipe_query
*query
,
119 struct pipe_query
*(*create_query
)( struct pipe_context
*pipe
,
120 unsigned query_type
);
122 void (*destroy_query
)(struct pipe_context
*pipe
,
123 struct pipe_query
*q
);
125 void (*begin_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
126 void (*end_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
129 * Get results of a query.
130 * \param wait if true, this query will block until the result is ready
131 * \return TRUE if results are ready, FALSE otherwise
133 boolean (*get_query_result
)(struct pipe_context
*pipe
,
134 struct pipe_query
*q
,
140 * State functions (create/bind/destroy state objects)
143 void * (*create_blend_state
)(struct pipe_context
*,
144 const struct pipe_blend_state
*);
145 void (*bind_blend_state
)(struct pipe_context
*, void *);
146 void (*delete_blend_state
)(struct pipe_context
*, void *);
148 void * (*create_sampler_state
)(struct pipe_context
*,
149 const struct pipe_sampler_state
*);
150 void (*bind_fragment_sampler_states
)(struct pipe_context
*,
151 unsigned num_samplers
,
153 void (*bind_vertex_sampler_states
)(struct pipe_context
*,
154 unsigned num_samplers
,
156 void (*delete_sampler_state
)(struct pipe_context
*, void *);
158 void * (*create_rasterizer_state
)(struct pipe_context
*,
159 const struct pipe_rasterizer_state
*);
160 void (*bind_rasterizer_state
)(struct pipe_context
*, void *);
161 void (*delete_rasterizer_state
)(struct pipe_context
*, void *);
163 void * (*create_depth_stencil_alpha_state
)(struct pipe_context
*,
164 const struct pipe_depth_stencil_alpha_state
*);
165 void (*bind_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
166 void (*delete_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
168 void * (*create_fs_state
)(struct pipe_context
*,
169 const struct pipe_shader_state
*);
170 void (*bind_fs_state
)(struct pipe_context
*, void *);
171 void (*delete_fs_state
)(struct pipe_context
*, void *);
173 void * (*create_vs_state
)(struct pipe_context
*,
174 const struct pipe_shader_state
*);
175 void (*bind_vs_state
)(struct pipe_context
*, void *);
176 void (*delete_vs_state
)(struct pipe_context
*, void *);
178 void * (*create_gs_state
)(struct pipe_context
*,
179 const struct pipe_shader_state
*);
180 void (*bind_gs_state
)(struct pipe_context
*, void *);
181 void (*delete_gs_state
)(struct pipe_context
*, void *);
183 void * (*create_vertex_elements_state
)(struct pipe_context
*,
184 unsigned num_elements
,
185 const struct pipe_vertex_element
*);
186 void (*bind_vertex_elements_state
)(struct pipe_context
*, void *);
187 void (*delete_vertex_elements_state
)(struct pipe_context
*, void *);
192 * Parameter-like state (or properties)
195 void (*set_blend_color
)( struct pipe_context
*,
196 const struct pipe_blend_color
* );
198 void (*set_stencil_ref
)( struct pipe_context
*,
199 const struct pipe_stencil_ref
* );
201 void (*set_clip_state
)( struct pipe_context
*,
202 const struct pipe_clip_state
* );
204 void (*set_constant_buffer
)( struct pipe_context
*,
205 uint shader
, uint index
,
206 struct pipe_resource
*buf
);
208 void (*set_framebuffer_state
)( struct pipe_context
*,
209 const struct pipe_framebuffer_state
* );
211 void (*set_polygon_stipple
)( struct pipe_context
*,
212 const struct pipe_poly_stipple
* );
214 void (*set_scissor_state
)( struct pipe_context
*,
215 const struct pipe_scissor_state
* );
217 void (*set_viewport_state
)( struct pipe_context
*,
218 const struct pipe_viewport_state
* );
220 void (*set_fragment_sampler_views
)(struct pipe_context
*,
222 struct pipe_sampler_view
**);
224 void (*set_vertex_sampler_views
)(struct pipe_context
*,
226 struct pipe_sampler_view
**);
228 void (*set_vertex_buffers
)( struct pipe_context
*,
229 unsigned num_buffers
,
230 const struct pipe_vertex_buffer
* );
238 * The pipe driver is allowed to set these functions to NULL, and in that
239 * case, they will not be available.
244 * Copy a block of pixels from one surface to another.
245 * The surfaces must be of the same format.
247 void (*surface_copy
)(struct pipe_context
*pipe
,
248 struct pipe_surface
*dest
,
249 unsigned destx
, unsigned desty
,
250 struct pipe_surface
*src
,
251 unsigned srcx
, unsigned srcy
,
252 unsigned width
, unsigned height
);
255 * Fill a region of a surface with a constant value.
257 void (*surface_fill
)(struct pipe_context
*pipe
,
258 struct pipe_surface
*dst
,
259 unsigned dstx
, unsigned dsty
,
260 unsigned width
, unsigned height
,
265 * Clear the specified set of currently bound buffers to specified values.
266 * The entire buffers are cleared (no scissor, no colormask, etc).
268 * \param buffers bitfield of PIPE_CLEAR_* values.
269 * \param rgba pointer to an array of one float for each of r, g, b, a.
270 * \param depth depth clear value in [0,1].
271 * \param stencil stencil clear value
273 void (*clear
)(struct pipe_context
*pipe
,
280 * \param flags bitmask of PIPE_FLUSH_x tokens)
282 void (*flush
)( struct pipe_context
*pipe
,
284 struct pipe_fence_handle
**fence
);
287 * Check whether a texture is referenced by an unflushed hw command.
288 * The state-tracker uses this function to avoid unnecessary flushes.
289 * It is safe (but wasteful) to always return
290 * PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE.
291 * \param pipe context whose unflushed hw commands will be checked.
292 * \param texture texture to check.
293 * \param face cubemap face. Use 0 for non-cubemap texture.
294 * \param level mipmap level.
295 * \return mask of PIPE_REFERENCED_FOR_READ/WRITE or PIPE_UNREFERENCED
297 unsigned int (*is_resource_referenced
)(struct pipe_context
*pipe
,
298 struct pipe_resource
*texture
,
299 unsigned face
, unsigned level
);
302 * Create a view on a texture to be used by a shader stage.
304 struct pipe_sampler_view
* (*create_sampler_view
)(struct pipe_context
*ctx
,
305 struct pipe_resource
*texture
,
306 const struct pipe_sampler_view
*templat
);
308 void (*sampler_view_destroy
)(struct pipe_context
*ctx
,
309 struct pipe_sampler_view
*view
);
313 * Get a transfer object for transferring data to/from a texture.
315 * Transfers are (by default) context-private and allow uploads to be
318 struct pipe_transfer
*(*get_transfer
)(struct pipe_context
*,
319 struct pipe_resource
*resource
,
320 struct pipe_subresource
,
321 unsigned usage
, /* a combination of PIPE_TRANSFER_x */
322 const struct pipe_box
*);
324 void (*transfer_destroy
)(struct pipe_context
*,
325 struct pipe_transfer
*);
327 void *(*transfer_map
)( struct pipe_context
*,
328 struct pipe_transfer
*transfer
);
330 /* If transfer was created with WRITE|FLUSH_EXPLICIT, only the
331 * regions specified with this call are guaranteed to be written to
334 void (*transfer_flush_region
)( struct pipe_context
*,
335 struct pipe_transfer
*transfer
,
336 const struct pipe_box
*);
338 void (*transfer_unmap
)( struct pipe_context
*,
339 struct pipe_transfer
*transfer
);
342 /* One-shot transfer operation with data supplied in a user
343 * pointer. XXX: strides??
345 void (*transfer_inline_write
)( struct pipe_context
*,
346 struct pipe_resource
*,
347 struct pipe_subresource
,
348 unsigned usage
, /* a combination of PIPE_TRANSFER_x */
349 const struct pipe_box
*,
352 unsigned slice_stride
);
361 #endif /* PIPE_CONTEXT_H */