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"
42 struct pipe_blend_color
;
43 struct pipe_blend_state
;
44 struct pipe_blit_info
;
46 struct pipe_clip_state
;
47 struct pipe_constant_buffer
;
48 struct pipe_debug_callback
;
49 struct pipe_depth_stencil_alpha_state
;
50 struct pipe_device_reset_callback
;
51 struct pipe_draw_info
;
52 struct pipe_grid_info
;
53 struct pipe_fence_handle
;
54 struct pipe_framebuffer_state
;
55 struct pipe_image_view
;
57 struct pipe_poly_stipple
;
58 struct pipe_rasterizer_state
;
59 struct pipe_resolve_info
;
61 struct pipe_sampler_state
;
62 struct pipe_sampler_view
;
63 struct pipe_scissor_state
;
64 struct pipe_shader_buffer
;
65 struct pipe_shader_state
;
66 struct pipe_stencil_ref
;
67 struct pipe_stream_output_target
;
70 struct pipe_vertex_buffer
;
71 struct pipe_vertex_element
;
72 struct pipe_video_buffer
;
73 struct pipe_video_codec
;
74 struct pipe_viewport_state
;
75 struct pipe_compute_state
;
76 union pipe_color_union
;
77 union pipe_query_result
;
82 * Gallium rendering context. Basically:
83 * - state setting functions
84 * - VBO drawing functions
88 struct pipe_screen
*screen
;
90 void *priv
; /**< context private data (for DRI for example) */
91 void *draw
; /**< private, for draw module (temporary?) */
94 * Stream uploaders created by the driver. All drivers, state trackers, and
95 * modules should use them.
97 * Use u_upload_alloc or u_upload_data as many times as you want.
98 * Once you are done, use u_upload_unmap.
100 struct u_upload_mgr
*stream_uploader
; /* everything but shader constants */
101 struct u_upload_mgr
*const_uploader
; /* shader constants only */
103 void (*destroy
)( struct pipe_context
* );
109 void (*draw_vbo
)( struct pipe_context
*pipe
,
110 const struct pipe_draw_info
*info
);
114 * Predicate subsequent rendering on occlusion query result
115 * \param query the query predicate, or NULL if no predicate
116 * \param condition whether to skip on FALSE or TRUE query results
117 * \param mode one of PIPE_RENDER_COND_x
119 void (*render_condition
)( struct pipe_context
*pipe
,
120 struct pipe_query
*query
,
122 enum pipe_render_cond_flag mode
);
128 struct pipe_query
*(*create_query
)( struct pipe_context
*pipe
,
133 * Create a query object that queries all given query types simultaneously.
135 * This can only be used for those query types for which
136 * get_driver_query_info indicates that it must be used. Only one batch
137 * query object may be active at a time.
139 * There may be additional constraints on which query types can be used
140 * together, in particular those that are implied by
141 * get_driver_query_group_info.
143 * \param num_queries the number of query types
144 * \param query_types array of \p num_queries query types
145 * \return a query object, or NULL on error.
147 struct pipe_query
*(*create_batch_query
)( struct pipe_context
*pipe
,
148 unsigned num_queries
,
149 unsigned *query_types
);
151 void (*destroy_query
)(struct pipe_context
*pipe
,
152 struct pipe_query
*q
);
154 bool (*begin_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
155 bool (*end_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
158 * Get results of a query.
159 * \param wait if true, this query will block until the result is ready
160 * \return TRUE if results are ready, FALSE otherwise
162 bool (*get_query_result
)(struct pipe_context
*pipe
,
163 struct pipe_query
*q
,
165 union pipe_query_result
*result
);
168 * Get results of a query, storing into resource. Note that this may not
169 * be used with batch queries.
171 * \param wait if true, this query will block until the result is ready
172 * \param result_type the type of the value being stored:
173 * \param index for queries that return multiple pieces of data, which
174 * item of that data to store (e.g. for
175 * PIPE_QUERY_PIPELINE_STATISTICS).
176 * When the index is -1, instead of the value of the query
177 * the driver should instead write a 1 or 0 to the appropriate
178 * location with 1 meaning that the query result is available.
180 void (*get_query_result_resource
)(struct pipe_context
*pipe
,
181 struct pipe_query
*q
,
183 enum pipe_query_value_type result_type
,
185 struct pipe_resource
*resource
,
189 * Set whether all current non-driver queries except TIME_ELAPSED are
192 void (*set_active_query_state
)(struct pipe_context
*pipe
, bool enable
);
195 * INTEL Performance Query
199 unsigned (*init_intel_perf_query_info
)(struct pipe_context
*pipe
);
201 void (*get_intel_perf_query_info
)(struct pipe_context
*pipe
,
202 unsigned query_index
,
205 uint32_t *n_counters
,
208 void (*get_intel_perf_query_counter_info
)(struct pipe_context
*pipe
,
209 unsigned query_index
,
210 unsigned counter_index
,
216 uint32_t *data_type_enum
,
219 struct pipe_query
*(*new_intel_perf_query_obj
)(struct pipe_context
*pipe
,
220 unsigned query_index
);
222 void (*begin_intel_perf_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
224 void (*end_intel_perf_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
226 void (*delete_intel_perf_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
228 void (*wait_intel_perf_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
230 bool (*is_intel_perf_query_ready
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
232 void (*get_intel_perf_query_data
)(struct pipe_context
*pipe
,
233 struct pipe_query
*q
,
236 uint32_t *bytes_written
);
241 * State functions (create/bind/destroy state objects)
244 void * (*create_blend_state
)(struct pipe_context
*,
245 const struct pipe_blend_state
*);
246 void (*bind_blend_state
)(struct pipe_context
*, void *);
247 void (*delete_blend_state
)(struct pipe_context
*, void *);
249 void * (*create_sampler_state
)(struct pipe_context
*,
250 const struct pipe_sampler_state
*);
251 void (*bind_sampler_states
)(struct pipe_context
*,
252 enum pipe_shader_type shader
,
253 unsigned start_slot
, unsigned num_samplers
,
255 void (*delete_sampler_state
)(struct pipe_context
*, void *);
257 void * (*create_rasterizer_state
)(struct pipe_context
*,
258 const struct pipe_rasterizer_state
*);
259 void (*bind_rasterizer_state
)(struct pipe_context
*, void *);
260 void (*delete_rasterizer_state
)(struct pipe_context
*, void *);
262 void * (*create_depth_stencil_alpha_state
)(struct pipe_context
*,
263 const struct pipe_depth_stencil_alpha_state
*);
264 void (*bind_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
265 void (*delete_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
267 void * (*create_fs_state
)(struct pipe_context
*,
268 const struct pipe_shader_state
*);
269 void (*bind_fs_state
)(struct pipe_context
*, void *);
270 void (*delete_fs_state
)(struct pipe_context
*, void *);
272 void * (*create_vs_state
)(struct pipe_context
*,
273 const struct pipe_shader_state
*);
274 void (*bind_vs_state
)(struct pipe_context
*, void *);
275 void (*delete_vs_state
)(struct pipe_context
*, void *);
277 void * (*create_gs_state
)(struct pipe_context
*,
278 const struct pipe_shader_state
*);
279 void (*bind_gs_state
)(struct pipe_context
*, void *);
280 void (*delete_gs_state
)(struct pipe_context
*, void *);
282 void * (*create_tcs_state
)(struct pipe_context
*,
283 const struct pipe_shader_state
*);
284 void (*bind_tcs_state
)(struct pipe_context
*, void *);
285 void (*delete_tcs_state
)(struct pipe_context
*, void *);
287 void * (*create_tes_state
)(struct pipe_context
*,
288 const struct pipe_shader_state
*);
289 void (*bind_tes_state
)(struct pipe_context
*, void *);
290 void (*delete_tes_state
)(struct pipe_context
*, void *);
292 void * (*create_vertex_elements_state
)(struct pipe_context
*,
293 unsigned num_elements
,
294 const struct pipe_vertex_element
*);
295 void (*bind_vertex_elements_state
)(struct pipe_context
*, void *);
296 void (*delete_vertex_elements_state
)(struct pipe_context
*, void *);
301 * Parameter-like state (or properties)
304 void (*set_blend_color
)( struct pipe_context
*,
305 const struct pipe_blend_color
* );
307 void (*set_stencil_ref
)( struct pipe_context
*,
308 const struct pipe_stencil_ref
* );
310 void (*set_sample_mask
)( struct pipe_context
*,
311 unsigned sample_mask
);
313 void (*set_min_samples
)( struct pipe_context
*,
314 unsigned min_samples
);
316 void (*set_clip_state
)( struct pipe_context
*,
317 const struct pipe_clip_state
* );
319 void (*set_constant_buffer
)( struct pipe_context
*,
320 enum pipe_shader_type shader
, uint index
,
321 const struct pipe_constant_buffer
*buf
);
323 void (*set_framebuffer_state
)( struct pipe_context
*,
324 const struct pipe_framebuffer_state
* );
327 * Set the sample locations used during rasterization. When NULL or sized
328 * zero, the default locations are used.
330 * Note that get_sample_position() still returns the default locations.
332 * The samples are accessed with
333 * locations[(pixel_y*grid_w+pixel_x)*ms+i],
335 * ms = the sample count
336 * grid_w = the pixel grid width for the sample count
337 * grid_w = the pixel grid height for the sample count
338 * pixel_x = the window x coordinate modulo grid_w
339 * pixel_y = the window y coordinate modulo grid_w
340 * i = the sample index
341 * This gives a result with the x coordinate as the low 4 bits and the y
342 * coordinate as the high 4 bits. For each coordinate 0 is the left or top
343 * edge of the pixel's rectangle and 16 (not 15) is the right or bottom edge.
345 * Out of bounds accesses are return undefined values.
347 * The pixel grid is used to vary sample locations across pixels and its
348 * size can be queried with get_sample_pixel_grid().
350 void (*set_sample_locations
)( struct pipe_context
*,
351 size_t size
, const uint8_t *locations
);
353 void (*set_polygon_stipple
)( struct pipe_context
*,
354 const struct pipe_poly_stipple
* );
356 void (*set_scissor_states
)( struct pipe_context
*,
358 unsigned num_scissors
,
359 const struct pipe_scissor_state
* );
361 void (*set_window_rectangles
)( struct pipe_context
*,
363 unsigned num_rectangles
,
364 const struct pipe_scissor_state
* );
366 void (*set_viewport_states
)( struct pipe_context
*,
368 unsigned num_viewports
,
369 const struct pipe_viewport_state
*);
371 void (*set_sampler_views
)(struct pipe_context
*,
372 enum pipe_shader_type shader
,
373 unsigned start_slot
, unsigned num_views
,
374 struct pipe_sampler_view
**views
);
376 void (*set_tess_state
)(struct pipe_context
*,
377 const float default_outer_level
[4],
378 const float default_inner_level
[2]);
381 * Sets the debug callback. If the pointer is null, then no callback is
382 * set, otherwise a copy of the data should be made.
384 void (*set_debug_callback
)(struct pipe_context
*,
385 const struct pipe_debug_callback
*);
388 * Bind an array of shader buffers that will be used by a shader.
389 * Any buffers that were previously bound to the specified range
392 * \param shader selects shader stage
393 * \param start_slot first buffer slot to bind.
394 * \param count number of consecutive buffers to bind.
395 * \param buffers array of pointers to the buffers to bind, it
396 * should contain at least \a count elements
397 * unless it's NULL, in which case no buffers will
399 * \param writable_bitmask If bit i is not set, buffers[i] will only be
400 * used with loads. If unsure, set to ~0.
402 void (*set_shader_buffers
)(struct pipe_context
*,
403 enum pipe_shader_type shader
,
404 unsigned start_slot
, unsigned count
,
405 const struct pipe_shader_buffer
*buffers
,
406 unsigned writable_bitmask
);
409 * Bind an array of hw atomic buffers for use by all shaders.
410 * And buffers that were previously bound to the specified range
413 * \param start_slot first buffer slot to bind.
414 * \param count number of consecutive buffers to bind.
415 * \param buffers array of pointers to the buffers to bind, it
416 * should contain at least \a count elements
417 * unless it's NULL, in which case no buffers will
420 void (*set_hw_atomic_buffers
)(struct pipe_context
*,
421 unsigned start_slot
, unsigned count
,
422 const struct pipe_shader_buffer
*buffers
);
425 * Bind an array of images that will be used by a shader.
426 * Any images that were previously bound to the specified range
429 * \param shader selects shader stage
430 * \param start_slot first image slot to bind.
431 * \param count number of consecutive images to bind.
432 * \param buffers array of the images to bind, it
433 * should contain at least \a count elements
434 * unless it's NULL, in which case no images will
437 void (*set_shader_images
)(struct pipe_context
*,
438 enum pipe_shader_type shader
,
439 unsigned start_slot
, unsigned count
,
440 const struct pipe_image_view
*images
);
442 void (*set_vertex_buffers
)( struct pipe_context
*,
444 unsigned num_buffers
,
445 const struct pipe_vertex_buffer
* );
450 * Stream output functions.
454 struct pipe_stream_output_target
*(*create_stream_output_target
)(
455 struct pipe_context
*,
456 struct pipe_resource
*,
457 unsigned buffer_offset
,
458 unsigned buffer_size
);
460 void (*stream_output_target_destroy
)(struct pipe_context
*,
461 struct pipe_stream_output_target
*);
463 void (*set_stream_output_targets
)(struct pipe_context
*,
464 unsigned num_targets
,
465 struct pipe_stream_output_target
**targets
,
466 const unsigned *offsets
);
472 * Resource functions for blit-like functionality
474 * If a driver supports multisampling, blit must implement color resolve.
479 * Copy a block of pixels from one resource to another.
480 * The resource must be of the same format.
481 * Resources with nr_samples > 1 are not allowed.
483 void (*resource_copy_region
)(struct pipe_context
*pipe
,
484 struct pipe_resource
*dst
,
486 unsigned dstx
, unsigned dsty
, unsigned dstz
,
487 struct pipe_resource
*src
,
489 const struct pipe_box
*src_box
);
491 /* Optimal hardware path for blitting pixels.
492 * Scaling, format conversion, up- and downsampling (resolve) are allowed.
494 void (*blit
)(struct pipe_context
*pipe
,
495 const struct pipe_blit_info
*info
);
500 * Clear the specified set of currently bound buffers to specified values.
501 * The entire buffers are cleared (no scissor, no colormask, etc).
503 * \param buffers bitfield of PIPE_CLEAR_* values.
504 * \param color pointer to a union of fiu array for each of r, g, b, a.
505 * \param depth depth clear value in [0,1].
506 * \param stencil stencil clear value
508 void (*clear
)(struct pipe_context
*pipe
,
510 const union pipe_color_union
*color
,
515 * Clear a color rendertarget surface.
516 * \param color pointer to an union of fiu array for each of r, g, b, a.
518 void (*clear_render_target
)(struct pipe_context
*pipe
,
519 struct pipe_surface
*dst
,
520 const union pipe_color_union
*color
,
521 unsigned dstx
, unsigned dsty
,
522 unsigned width
, unsigned height
,
523 bool render_condition_enabled
);
526 * Clear a depth-stencil surface.
527 * \param clear_flags bitfield of PIPE_CLEAR_DEPTH/STENCIL values.
528 * \param depth depth clear value in [0,1].
529 * \param stencil stencil clear value
531 void (*clear_depth_stencil
)(struct pipe_context
*pipe
,
532 struct pipe_surface
*dst
,
533 unsigned clear_flags
,
536 unsigned dstx
, unsigned dsty
,
537 unsigned width
, unsigned height
,
538 bool render_condition_enabled
);
541 * Clear the texture with the specified texel. Not guaranteed to be a
542 * renderable format. Data provided in the resource's format.
544 void (*clear_texture
)(struct pipe_context
*pipe
,
545 struct pipe_resource
*res
,
547 const struct pipe_box
*box
,
551 * Clear a buffer. Runs a memset over the specified region with the element
552 * value passed in through clear_value of size clear_value_size.
554 void (*clear_buffer
)(struct pipe_context
*pipe
,
555 struct pipe_resource
*res
,
558 const void *clear_value
,
559 int clear_value_size
);
562 * If a depth buffer is rendered with different sample location state than
563 * what is current at the time of reading, the values may differ because
564 * depth buffer compression can depend the sample locations.
566 * This function is a hint to decompress the current depth buffer to avoid
569 void (*evaluate_depth_buffer
)(struct pipe_context
*pipe
);
572 * Flush draw commands.
574 * This guarantees that the new fence (if any) will finish in finite time,
575 * unless PIPE_FLUSH_DEFERRED is used.
577 * Subsequent operations on other contexts of the same screen are guaranteed
578 * to execute after the flushed commands, unless PIPE_FLUSH_ASYNC is used.
580 * NOTE: use screen->fence_reference() (or equivalent) to transfer
581 * new fence ref to **fence, to ensure that previous fence is unref'd
583 * \param fence if not NULL, an old fence to unref and transfer a
584 * new fence reference to
585 * \param flags bitfield of enum pipe_flush_flags values.
587 void (*flush
)(struct pipe_context
*pipe
,
588 struct pipe_fence_handle
**fence
,
592 * Create a fence from a fd.
594 * This is used for importing a foreign/external fence fd.
596 * \param fence if not NULL, an old fence to unref and transfer a
597 * new fence reference to
598 * \param fd fd representing the fence object
599 * \param type indicates which fence types backs fd
601 void (*create_fence_fd
)(struct pipe_context
*pipe
,
602 struct pipe_fence_handle
**fence
,
604 enum pipe_fd_type type
);
607 * Insert commands to have GPU wait for fence to be signaled.
609 void (*fence_server_sync
)(struct pipe_context
*pipe
,
610 struct pipe_fence_handle
*fence
);
613 * Insert commands to have the GPU signal a fence.
615 void (*fence_server_signal
)(struct pipe_context
*pipe
,
616 struct pipe_fence_handle
*fence
);
619 * Create a view on a texture to be used by a shader stage.
621 struct pipe_sampler_view
* (*create_sampler_view
)(struct pipe_context
*ctx
,
622 struct pipe_resource
*texture
,
623 const struct pipe_sampler_view
*templat
);
626 * Destroy a view on a texture.
628 * \param ctx the current context
629 * \param view the view to be destroyed
631 * \note The current context may not be the context in which the view was
632 * created (view->context). However, the caller must guarantee that
633 * the context which created the view is still alive.
635 void (*sampler_view_destroy
)(struct pipe_context
*ctx
,
636 struct pipe_sampler_view
*view
);
640 * Get a surface which is a "view" into a resource, used by
641 * render target / depth stencil stages.
643 struct pipe_surface
*(*create_surface
)(struct pipe_context
*ctx
,
644 struct pipe_resource
*resource
,
645 const struct pipe_surface
*templat
);
647 void (*surface_destroy
)(struct pipe_context
*ctx
,
648 struct pipe_surface
*);
654 * Transfers are (by default) context-private and allow uploads to be
655 * interleaved with rendering.
657 * out_transfer will contain the transfer object that must be passed
658 * to all the other transfer functions. It also contains useful
659 * information (like texture strides).
661 void *(*transfer_map
)(struct pipe_context
*,
662 struct pipe_resource
*resource
,
664 unsigned usage
, /* a combination of PIPE_TRANSFER_x */
665 const struct pipe_box
*,
666 struct pipe_transfer
**out_transfer
);
668 /* If transfer was created with WRITE|FLUSH_EXPLICIT, only the
669 * regions specified with this call are guaranteed to be written to
672 void (*transfer_flush_region
)( struct pipe_context
*,
673 struct pipe_transfer
*transfer
,
674 const struct pipe_box
*);
676 void (*transfer_unmap
)(struct pipe_context
*,
677 struct pipe_transfer
*transfer
);
679 /* One-shot transfer operation with data supplied in a user
682 void (*buffer_subdata
)(struct pipe_context
*,
683 struct pipe_resource
*,
684 unsigned usage
, /* a combination of PIPE_TRANSFER_x */
689 void (*texture_subdata
)(struct pipe_context
*,
690 struct pipe_resource
*,
692 unsigned usage
, /* a combination of PIPE_TRANSFER_x */
693 const struct pipe_box
*,
696 unsigned layer_stride
);
699 * Flush any pending framebuffer writes and invalidate texture caches.
701 void (*texture_barrier
)(struct pipe_context
*, unsigned flags
);
704 * Flush caches according to flags.
706 void (*memory_barrier
)(struct pipe_context
*, unsigned flags
);
709 * Change the commitment status of a part of the given resource, which must
710 * have been created with the PIPE_RESOURCE_FLAG_SPARSE bit.
712 * \param level The texture level whose commitment should be changed.
713 * \param box The region of the resource whose commitment should be changed.
714 * \param commit Whether memory should be committed or un-committed.
716 * \return false if out of memory, true on success.
718 bool (*resource_commit
)(struct pipe_context
*, struct pipe_resource
*,
719 unsigned level
, struct pipe_box
*box
, bool commit
);
722 * Creates a video codec for a specific video format/profile
724 struct pipe_video_codec
*(*create_video_codec
)( struct pipe_context
*context
,
725 const struct pipe_video_codec
*templat
);
728 * Creates a video buffer as decoding target
730 struct pipe_video_buffer
*(*create_video_buffer
)( struct pipe_context
*context
,
731 const struct pipe_video_buffer
*templat
);
734 * Compute kernel execution
738 * Define the compute program and parameters to be used by
739 * pipe_context::launch_grid.
741 void *(*create_compute_state
)(struct pipe_context
*context
,
742 const struct pipe_compute_state
*);
743 void (*bind_compute_state
)(struct pipe_context
*, void *);
744 void (*delete_compute_state
)(struct pipe_context
*, void *);
747 * Bind an array of shader resources that will be used by the
748 * compute program. Any resources that were previously bound to
749 * the specified range will be unbound after this call.
751 * \param start first resource to bind.
752 * \param count number of consecutive resources to bind.
753 * \param resources array of pointers to the resources to bind, it
754 * should contain at least \a count elements
755 * unless it's NULL, in which case no new
756 * resources will be bound.
758 void (*set_compute_resources
)(struct pipe_context
*,
759 unsigned start
, unsigned count
,
760 struct pipe_surface
**resources
);
763 * Bind an array of buffers to be mapped into the address space of
764 * the GLOBAL resource. Any buffers that were previously bound
765 * between [first, first + count - 1] are unbound after this call.
767 * \param first first buffer to map.
768 * \param count number of consecutive buffers to map.
769 * \param resources array of pointers to the buffers to map, it
770 * should contain at least \a count elements
771 * unless it's NULL, in which case no new
772 * resources will be bound.
773 * \param handles array of pointers to the memory locations that
774 * will be updated with the address each buffer
775 * will be mapped to. The base memory address of
776 * each of the buffers will be added to the value
777 * pointed to by its corresponding handle to form
778 * the final address argument. It should contain
779 * at least \a count elements, unless \a
780 * resources is NULL in which case \a handles
781 * should be NULL as well.
783 * Note that the driver isn't required to make any guarantees about
784 * the contents of the \a handles array being valid anytime except
785 * during the subsequent calls to pipe_context::launch_grid. This
786 * means that the only sensible location handles[i] may point to is
787 * somewhere within the INPUT buffer itself. This is so to
788 * accommodate implementations that lack virtual memory but
789 * nevertheless migrate buffers on the fly, leading to resource
790 * base addresses that change on each kernel invocation or are
791 * unknown to the pipe driver.
793 void (*set_global_binding
)(struct pipe_context
*context
,
794 unsigned first
, unsigned count
,
795 struct pipe_resource
**resources
,
799 * Launch the compute kernel starting from instruction \a pc of the
800 * currently bound compute program.
802 void (*launch_grid
)(struct pipe_context
*context
,
803 const struct pipe_grid_info
*info
);
807 * Get the default sample position for an individual sample point.
809 * \param sample_count - total number of samples
810 * \param sample_index - sample to get the position values for
811 * \param out_value - return value of 2 floats for x and y position for
814 void (*get_sample_position
)(struct pipe_context
*context
,
815 unsigned sample_count
,
816 unsigned sample_index
,
820 * Query a timestamp in nanoseconds. This is completely equivalent to
821 * pipe_screen::get_timestamp() but takes a context handle for drivers
822 * that require a context.
824 uint64_t (*get_timestamp
)(struct pipe_context
*);
827 * Flush the resource cache, so that the resource can be used
828 * by an external client. Possible usage:
829 * - flushing a resource before presenting it on the screen
830 * - flushing a resource if some other process or device wants to use it
831 * This shouldn't be used to flush caches if the resource is only managed
832 * by a single pipe_screen and is not shared with another process.
833 * (i.e. you shouldn't use it to flush caches explicitly if you want to e.g.
834 * use the resource for texturing)
836 void (*flush_resource
)(struct pipe_context
*ctx
,
837 struct pipe_resource
*resource
);
840 * Invalidate the contents of the resource. This is used to
842 * (1) implement EGL's semantic of undefined depth/stencil
843 * contents after a swapbuffers. This allows a tiled renderer (for
844 * example) to not store the depth buffer.
846 * (2) implement GL's InvalidateBufferData. For backwards compatibility,
847 * you must only rely on the usability for this purpose when
848 * PIPE_CAP_INVALIDATE_BUFFER is enabled.
850 void (*invalidate_resource
)(struct pipe_context
*ctx
,
851 struct pipe_resource
*resource
);
854 * Return information about unexpected device resets.
856 enum pipe_reset_status (*get_device_reset_status
)(struct pipe_context
*ctx
);
859 * Sets the reset status callback. If the pointer is null, then no callback
860 * is set, otherwise a copy of the data should be made.
862 void (*set_device_reset_callback
)(struct pipe_context
*ctx
,
863 const struct pipe_device_reset_callback
*cb
);
866 * Dump driver-specific debug information into a stream. This is
867 * used by debugging tools.
869 * \param ctx pipe context
870 * \param stream where the output should be written to
871 * \param flags a mask of PIPE_DUMP_* flags
873 void (*dump_debug_state
)(struct pipe_context
*ctx
, FILE *stream
,
877 * Set the log context to which the driver should write internal debug logs
878 * (internal states, command streams).
880 * The caller must ensure that the log context is destroyed and reset to
881 * NULL before the pipe context is destroyed, and that log context functions
882 * are only called from the driver thread.
884 * \param ctx pipe context
885 * \param log logging context
887 void (*set_log_context
)(struct pipe_context
*ctx
, struct u_log_context
*log
);
890 * Emit string marker in cmdstream
892 void (*emit_string_marker
)(struct pipe_context
*ctx
,
898 * \return TRUE if mipmap generation succeeds, FALSE otherwise
900 bool (*generate_mipmap
)(struct pipe_context
*ctx
,
901 struct pipe_resource
*resource
,
902 enum pipe_format format
,
905 unsigned first_layer
,
906 unsigned last_layer
);
909 * Create a 64-bit texture handle.
911 * \param ctx pipe context
912 * \param view pipe sampler view object
913 * \param state pipe sampler state template
914 * \return a 64-bit texture handle if success, 0 otherwise
916 uint64_t (*create_texture_handle
)(struct pipe_context
*ctx
,
917 struct pipe_sampler_view
*view
,
918 const struct pipe_sampler_state
*state
);
921 * Delete a texture handle.
923 * \param ctx pipe context
924 * \param handle 64-bit texture handle
926 void (*delete_texture_handle
)(struct pipe_context
*ctx
, uint64_t handle
);
929 * Make a texture handle resident.
931 * \param ctx pipe context
932 * \param handle 64-bit texture handle
933 * \param resident TRUE for resident, FALSE otherwise
935 void (*make_texture_handle_resident
)(struct pipe_context
*ctx
,
936 uint64_t handle
, bool resident
);
939 * Create a 64-bit image handle.
941 * \param ctx pipe context
942 * \param image pipe image view template
943 * \return a 64-bit image handle if success, 0 otherwise
945 uint64_t (*create_image_handle
)(struct pipe_context
*ctx
,
946 const struct pipe_image_view
*image
);
949 * Delete an image handle.
951 * \param ctx pipe context
952 * \param handle 64-bit image handle
954 void (*delete_image_handle
)(struct pipe_context
*ctx
, uint64_t handle
);
957 * Make an image handle resident.
959 * \param ctx pipe context
960 * \param handle 64-bit image handle
961 * \param access GL_READ_ONLY, GL_WRITE_ONLY or GL_READ_WRITE
962 * \param resident TRUE for resident, FALSE otherwise
964 void (*make_image_handle_resident
)(struct pipe_context
*ctx
, uint64_t handle
,
965 unsigned access
, bool resident
);
968 * Call the given function from the driver thread.
970 * This is set by threaded contexts for use by debugging wrappers.
972 * \param asap if true, run the callback immediately if there are no pending
973 * commands to be processed by the driver thread
975 void (*callback
)(struct pipe_context
*ctx
, void (*fn
)(void *), void *data
,
979 * Set a context parameter See enum pipe_context_param for more details.
981 void (*set_context_param
)(struct pipe_context
*ctx
,
982 enum pipe_context_param param
,
991 #endif /* PIPE_CONTEXT_H */