1 /**************************************************************************
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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
31 #include "p_compiler.h"
33 #include "p_video_enums.h"
34 #include "p_defines.h"
41 struct pipe_blend_color
;
42 struct pipe_blend_state
;
43 struct pipe_blit_info
;
45 struct pipe_clip_state
;
46 struct pipe_constant_buffer
;
47 struct pipe_depth_stencil_alpha_state
;
48 struct pipe_draw_info
;
49 struct pipe_fence_handle
;
50 struct pipe_framebuffer_state
;
51 struct pipe_index_buffer
;
53 struct pipe_poly_stipple
;
54 struct pipe_rasterizer_state
;
55 struct pipe_resolve_info
;
57 struct pipe_sampler_state
;
58 struct pipe_sampler_view
;
59 struct pipe_scissor_state
;
60 struct pipe_shader_state
;
61 struct pipe_stencil_ref
;
62 struct pipe_stream_output_target
;
65 struct pipe_vertex_buffer
;
66 struct pipe_vertex_element
;
67 struct pipe_video_buffer
;
68 struct pipe_video_codec
;
69 struct pipe_viewport_state
;
70 struct pipe_compute_state
;
71 union pipe_color_union
;
72 union pipe_query_result
;
75 * Gallium rendering context. Basically:
76 * - state setting functions
77 * - VBO drawing functions
81 struct pipe_screen
*screen
;
83 void *priv
; /**< context private data (for DRI for example) */
84 void *draw
; /**< private, for draw module (temporary?) */
86 void (*destroy
)( struct pipe_context
* );
92 void (*draw_vbo
)( struct pipe_context
*pipe
,
93 const struct pipe_draw_info
*info
);
97 * Predicate subsequent rendering on occlusion query result
98 * \param query the query predicate, or NULL if no predicate
99 * \param condition whether to skip on FALSE or TRUE query results
100 * \param mode one of PIPE_RENDER_COND_x
102 void (*render_condition
)( struct pipe_context
*pipe
,
103 struct pipe_query
*query
,
111 struct pipe_query
*(*create_query
)( struct pipe_context
*pipe
,
115 void (*destroy_query
)(struct pipe_context
*pipe
,
116 struct pipe_query
*q
);
118 boolean (*begin_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
119 void (*end_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
122 * Get results of a query.
123 * \param wait if true, this query will block until the result is ready
124 * \return TRUE if results are ready, FALSE otherwise
126 boolean (*get_query_result
)(struct pipe_context
*pipe
,
127 struct pipe_query
*q
,
129 union pipe_query_result
*result
);
133 * State functions (create/bind/destroy state objects)
136 void * (*create_blend_state
)(struct pipe_context
*,
137 const struct pipe_blend_state
*);
138 void (*bind_blend_state
)(struct pipe_context
*, void *);
139 void (*delete_blend_state
)(struct pipe_context
*, void *);
141 void * (*create_sampler_state
)(struct pipe_context
*,
142 const struct pipe_sampler_state
*);
143 void (*bind_sampler_states
)(struct pipe_context
*,
144 unsigned shader
, unsigned start_slot
,
145 unsigned num_samplers
, void **samplers
);
146 void (*delete_sampler_state
)(struct pipe_context
*, void *);
148 void * (*create_rasterizer_state
)(struct pipe_context
*,
149 const struct pipe_rasterizer_state
*);
150 void (*bind_rasterizer_state
)(struct pipe_context
*, void *);
151 void (*delete_rasterizer_state
)(struct pipe_context
*, void *);
153 void * (*create_depth_stencil_alpha_state
)(struct pipe_context
*,
154 const struct pipe_depth_stencil_alpha_state
*);
155 void (*bind_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
156 void (*delete_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
158 void * (*create_fs_state
)(struct pipe_context
*,
159 const struct pipe_shader_state
*);
160 void (*bind_fs_state
)(struct pipe_context
*, void *);
161 void (*delete_fs_state
)(struct pipe_context
*, void *);
163 void * (*create_vs_state
)(struct pipe_context
*,
164 const struct pipe_shader_state
*);
165 void (*bind_vs_state
)(struct pipe_context
*, void *);
166 void (*delete_vs_state
)(struct pipe_context
*, void *);
168 void * (*create_gs_state
)(struct pipe_context
*,
169 const struct pipe_shader_state
*);
170 void (*bind_gs_state
)(struct pipe_context
*, void *);
171 void (*delete_gs_state
)(struct pipe_context
*, void *);
173 void * (*create_tcs_state
)(struct pipe_context
*,
174 const struct pipe_shader_state
*);
175 void (*bind_tcs_state
)(struct pipe_context
*, void *);
176 void (*delete_tcs_state
)(struct pipe_context
*, void *);
178 void * (*create_tes_state
)(struct pipe_context
*,
179 const struct pipe_shader_state
*);
180 void (*bind_tes_state
)(struct pipe_context
*, void *);
181 void (*delete_tes_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_sample_mask
)( struct pipe_context
*,
202 unsigned sample_mask
);
204 void (*set_min_samples
)( struct pipe_context
*,
205 unsigned min_samples
);
207 void (*set_clip_state
)( struct pipe_context
*,
208 const struct pipe_clip_state
* );
210 void (*set_constant_buffer
)( struct pipe_context
*,
211 uint shader
, uint index
,
212 struct pipe_constant_buffer
*buf
);
214 void (*set_framebuffer_state
)( struct pipe_context
*,
215 const struct pipe_framebuffer_state
* );
217 void (*set_polygon_stipple
)( struct pipe_context
*,
218 const struct pipe_poly_stipple
* );
220 void (*set_scissor_states
)( struct pipe_context
*,
222 unsigned num_scissors
,
223 const struct pipe_scissor_state
* );
225 void (*set_viewport_states
)( struct pipe_context
*,
227 unsigned num_viewports
,
228 const struct pipe_viewport_state
*);
230 void (*set_sampler_views
)(struct pipe_context
*, unsigned shader
,
231 unsigned start_slot
, unsigned num_views
,
232 struct pipe_sampler_view
**);
234 void (*set_tess_state
)(struct pipe_context
*,
235 const float default_outer_level
[4],
236 const float default_inner_level
[2]);
239 * Bind an array of shader resources that will be used by the
240 * graphics pipeline. Any resources that were previously bound to
241 * the specified range will be unbound after this call.
243 * \param start first resource to bind.
244 * \param count number of consecutive resources to bind.
245 * \param resources array of pointers to the resources to bind, it
246 * should contain at least \a count elements
247 * unless it's NULL, in which case no new
248 * resources will be bound.
250 void (*set_shader_resources
)(struct pipe_context
*,
251 unsigned start
, unsigned count
,
252 struct pipe_surface
**resources
);
254 void (*set_vertex_buffers
)( struct pipe_context
*,
256 unsigned num_buffers
,
257 const struct pipe_vertex_buffer
* );
259 void (*set_index_buffer
)( struct pipe_context
*pipe
,
260 const struct pipe_index_buffer
* );
265 * Stream output functions.
269 struct pipe_stream_output_target
*(*create_stream_output_target
)(
270 struct pipe_context
*,
271 struct pipe_resource
*,
272 unsigned buffer_offset
,
273 unsigned buffer_size
);
275 void (*stream_output_target_destroy
)(struct pipe_context
*,
276 struct pipe_stream_output_target
*);
278 void (*set_stream_output_targets
)(struct pipe_context
*,
279 unsigned num_targets
,
280 struct pipe_stream_output_target
**targets
,
281 const unsigned *offsets
);
287 * Resource functions for blit-like functionality
289 * If a driver supports multisampling, blit must implement color resolve.
294 * Copy a block of pixels from one resource to another.
295 * The resource must be of the same format.
296 * Resources with nr_samples > 1 are not allowed.
298 void (*resource_copy_region
)(struct pipe_context
*pipe
,
299 struct pipe_resource
*dst
,
301 unsigned dstx
, unsigned dsty
, unsigned dstz
,
302 struct pipe_resource
*src
,
304 const struct pipe_box
*src_box
);
306 /* Optimal hardware path for blitting pixels.
307 * Scaling, format conversion, up- and downsampling (resolve) are allowed.
309 void (*blit
)(struct pipe_context
*pipe
,
310 const struct pipe_blit_info
*info
);
315 * Clear the specified set of currently bound buffers to specified values.
316 * The entire buffers are cleared (no scissor, no colormask, etc).
318 * \param buffers bitfield of PIPE_CLEAR_* values.
319 * \param color pointer to a union of fiu array for each of r, g, b, a.
320 * \param depth depth clear value in [0,1].
321 * \param stencil stencil clear value
323 void (*clear
)(struct pipe_context
*pipe
,
325 const union pipe_color_union
*color
,
330 * Clear a color rendertarget surface.
331 * \param color pointer to an union of fiu array for each of r, g, b, a.
333 void (*clear_render_target
)(struct pipe_context
*pipe
,
334 struct pipe_surface
*dst
,
335 const union pipe_color_union
*color
,
336 unsigned dstx
, unsigned dsty
,
337 unsigned width
, unsigned height
);
340 * Clear a depth-stencil surface.
341 * \param clear_flags bitfield of PIPE_CLEAR_DEPTH/STENCIL values.
342 * \param depth depth clear value in [0,1].
343 * \param stencil stencil clear value
345 void (*clear_depth_stencil
)(struct pipe_context
*pipe
,
346 struct pipe_surface
*dst
,
347 unsigned clear_flags
,
350 unsigned dstx
, unsigned dsty
,
351 unsigned width
, unsigned height
);
354 * Clear a buffer. Runs a memset over the specified region with the element
355 * value passed in through clear_value of size clear_value_size.
357 void (*clear_buffer
)(struct pipe_context
*pipe
,
358 struct pipe_resource
*res
,
361 const void *clear_value
,
362 int clear_value_size
);
365 * Flush draw commands
367 * NOTE: use screen->fence_reference() (or equivalent) to transfer
368 * new fence ref to **fence, to ensure that previous fence is unref'd
370 * \param fence if not NULL, an old fence to unref and transfer a
371 * new fence reference to
372 * \param flags bitfield of enum pipe_flush_flags values.
374 void (*flush
)(struct pipe_context
*pipe
,
375 struct pipe_fence_handle
**fence
,
379 * Create a view on a texture to be used by a shader stage.
381 struct pipe_sampler_view
* (*create_sampler_view
)(struct pipe_context
*ctx
,
382 struct pipe_resource
*texture
,
383 const struct pipe_sampler_view
*templat
);
385 void (*sampler_view_destroy
)(struct pipe_context
*ctx
,
386 struct pipe_sampler_view
*view
);
390 * Get a surface which is a "view" into a resource, used by
391 * render target / depth stencil stages.
393 struct pipe_surface
*(*create_surface
)(struct pipe_context
*ctx
,
394 struct pipe_resource
*resource
,
395 const struct pipe_surface
*templat
);
397 void (*surface_destroy
)(struct pipe_context
*ctx
,
398 struct pipe_surface
*);
403 * Transfers are (by default) context-private and allow uploads to be
404 * interleaved with rendering.
406 * out_transfer will contain the transfer object that must be passed
407 * to all the other transfer functions. It also contains useful
408 * information (like texture strides).
410 void *(*transfer_map
)(struct pipe_context
*,
411 struct pipe_resource
*resource
,
413 unsigned usage
, /* a combination of PIPE_TRANSFER_x */
414 const struct pipe_box
*,
415 struct pipe_transfer
**out_transfer
);
417 /* If transfer was created with WRITE|FLUSH_EXPLICIT, only the
418 * regions specified with this call are guaranteed to be written to
421 void (*transfer_flush_region
)( struct pipe_context
*,
422 struct pipe_transfer
*transfer
,
423 const struct pipe_box
*);
425 void (*transfer_unmap
)(struct pipe_context
*,
426 struct pipe_transfer
*transfer
);
428 /* One-shot transfer operation with data supplied in a user
429 * pointer. XXX: strides??
431 void (*transfer_inline_write
)( struct pipe_context
*,
432 struct pipe_resource
*,
434 unsigned usage
, /* a combination of PIPE_TRANSFER_x */
435 const struct pipe_box
*,
438 unsigned layer_stride
);
441 * Flush any pending framebuffer writes and invalidate texture caches.
443 void (*texture_barrier
)(struct pipe_context
*);
446 * Flush caches according to flags.
448 void (*memory_barrier
)(struct pipe_context
*, unsigned flags
);
451 * Creates a video codec for a specific video format/profile
453 struct pipe_video_codec
*(*create_video_codec
)( struct pipe_context
*context
,
454 const struct pipe_video_codec
*templat
);
457 * Creates a video buffer as decoding target
459 struct pipe_video_buffer
*(*create_video_buffer
)( struct pipe_context
*context
,
460 const struct pipe_video_buffer
*templat
);
463 * Compute kernel execution
467 * Define the compute program and parameters to be used by
468 * pipe_context::launch_grid.
470 void *(*create_compute_state
)(struct pipe_context
*context
,
471 const struct pipe_compute_state
*);
472 void (*bind_compute_state
)(struct pipe_context
*, void *);
473 void (*delete_compute_state
)(struct pipe_context
*, void *);
476 * Bind an array of shader resources that will be used by the
477 * compute program. Any resources that were previously bound to
478 * the specified range will be unbound after this call.
480 * \param start first resource to bind.
481 * \param count number of consecutive resources to bind.
482 * \param resources array of pointers to the resources to bind, it
483 * should contain at least \a count elements
484 * unless it's NULL, in which case no new
485 * resources will be bound.
487 void (*set_compute_resources
)(struct pipe_context
*,
488 unsigned start
, unsigned count
,
489 struct pipe_surface
**resources
);
492 * Bind an array of buffers to be mapped into the address space of
493 * the GLOBAL resource. Any buffers that were previously bound
494 * between [first, first + count - 1] are unbound after this call.
496 * \param first first buffer to map.
497 * \param count number of consecutive buffers to map.
498 * \param resources array of pointers to the buffers to map, it
499 * should contain at least \a count elements
500 * unless it's NULL, in which case no new
501 * resources will be bound.
502 * \param handles array of pointers to the memory locations that
503 * will be updated with the address each buffer
504 * will be mapped to. The base memory address of
505 * each of the buffers will be added to the value
506 * pointed to by its corresponding handle to form
507 * the final address argument. It should contain
508 * at least \a count elements, unless \a
509 * resources is NULL in which case \a handles
510 * should be NULL as well.
512 * Note that the driver isn't required to make any guarantees about
513 * the contents of the \a handles array being valid anytime except
514 * during the subsequent calls to pipe_context::launch_grid. This
515 * means that the only sensible location handles[i] may point to is
516 * somewhere within the INPUT buffer itself. This is so to
517 * accommodate implementations that lack virtual memory but
518 * nevertheless migrate buffers on the fly, leading to resource
519 * base addresses that change on each kernel invocation or are
520 * unknown to the pipe driver.
522 void (*set_global_binding
)(struct pipe_context
*context
,
523 unsigned first
, unsigned count
,
524 struct pipe_resource
**resources
,
528 * Launch the compute kernel starting from instruction \a pc of the
529 * currently bound compute program.
531 * \a grid_layout and \a block_layout are arrays of size \a
532 * PIPE_COMPUTE_CAP_GRID_DIMENSION that determine the layout of the
533 * grid (in block units) and working block (in thread units) to be
534 * used, respectively.
536 * \a pc For drivers that use PIPE_SHADER_IR_LLVM as their prefered IR,
537 * this value will be the index of the kernel in the opencl.kernels
540 * \a input will be used to initialize the INPUT resource, and it
541 * should point to a buffer of at least
542 * pipe_compute_state::req_input_mem bytes.
544 void (*launch_grid
)(struct pipe_context
*context
,
545 const uint
*block_layout
, const uint
*grid_layout
,
546 uint32_t pc
, const void *input
);
550 * Get sample position for an individual sample point.
552 * \param sample_count - total number of samples
553 * \param sample_index - sample to get the position values for
554 * \param out_value - return value of 2 floats for x and y position for
557 void (*get_sample_position
)(struct pipe_context
*context
,
558 unsigned sample_count
,
559 unsigned sample_index
,
563 * Flush the resource cache, so that the resource can be used
564 * by an external client. Possible usage:
565 * - flushing a resource before presenting it on the screen
566 * - flushing a resource if some other process or device wants to use it
567 * This shouldn't be used to flush caches if the resource is only managed
568 * by a single pipe_screen and is not shared with another process.
569 * (i.e. you shouldn't use it to flush caches explicitly if you want to e.g.
570 * use the resource for texturing)
572 void (*flush_resource
)(struct pipe_context
*ctx
,
573 struct pipe_resource
*resource
);
576 * Invalidate the contents of the resource.
578 * This is used to implement EGL's semantic of undefined depth/stencil
579 * contenst after a swapbuffers. This allows a tiled renderer (for
580 * example) to not store the depth buffer.
582 void (*invalidate_resource
)(struct pipe_context
*ctx
,
583 struct pipe_resource
*resource
);
586 * Return information about unexpected device resets.
588 enum pipe_reset_status (*get_device_reset_status
)(struct pipe_context
*ctx
);
596 #endif /* PIPE_CONTEXT_H */