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 **************************************************************************/
30 * Keith Whitwell <keithw@vmware.com>
34 #include "pipe/p_context.h"
35 #include "util/u_memory.h"
36 #include "util/u_math.h"
37 #include "util/u_cpu_detect.h"
38 #include "util/u_inlines.h"
39 #include "util/u_helpers.h"
40 #include "util/u_prim.h"
41 #include "util/format/u_format.h"
42 #include "draw_context.h"
43 #include "draw_pipe.h"
44 #include "draw_prim_assembler.h"
47 #include "draw_tess.h"
50 #include "gallivm/lp_bld_init.h"
51 #include "gallivm/lp_bld_limits.h"
52 #include "draw_llvm.h"
55 draw_get_option_use_llvm(void)
57 return debug_get_bool_option("DRAW_USE_LLVM", TRUE
);
61 draw_get_option_use_llvm(void)
71 return draw_get_option_use_llvm();
78 * Create new draw module context with gallivm state for LLVM JIT.
80 static struct draw_context
*
81 draw_create_context(struct pipe_context
*pipe
, void *context
,
84 struct draw_context
*draw
= CALLOC_STRUCT( draw_context
);
88 /* we need correct cpu caps for disabling denorms in draw_vbo() */
92 if (try_llvm
&& draw_get_option_use_llvm()) {
93 draw
->llvm
= draw_llvm_create(draw
, (LLVMContextRef
)context
);
102 draw
->ia
= draw_prim_assembler_create(draw
);
109 draw_destroy( draw
);
116 * Create new draw module context, with LLVM JIT.
118 struct draw_context
*
119 draw_create(struct pipe_context
*pipe
)
121 return draw_create_context(pipe
, NULL
, TRUE
);
125 #ifdef LLVM_AVAILABLE
126 struct draw_context
*
127 draw_create_with_llvm_context(struct pipe_context
*pipe
,
130 return draw_create_context(pipe
, context
, TRUE
);
135 * Create a new draw context, without LLVM JIT.
137 struct draw_context
*
138 draw_create_no_llvm(struct pipe_context
*pipe
)
140 return draw_create_context(pipe
, NULL
, FALSE
);
144 boolean
draw_init(struct draw_context
*draw
)
147 * Note that several functions compute the clipmask of the predefined
148 * formats with hardcoded formulas instead of using these. So modifications
149 * here must be reflected there too.
152 ASSIGN_4V( draw
->plane
[0], -1, 0, 0, 1 );
153 ASSIGN_4V( draw
->plane
[1], 1, 0, 0, 1 );
154 ASSIGN_4V( draw
->plane
[2], 0, -1, 0, 1 );
155 ASSIGN_4V( draw
->plane
[3], 0, 1, 0, 1 );
156 ASSIGN_4V( draw
->plane
[4], 0, 0, 1, 1 ); /* yes these are correct */
157 ASSIGN_4V( draw
->plane
[5], 0, 0, -1, 1 ); /* mesa's a bit wonky */
158 draw
->clip_xy
= TRUE
;
161 draw
->pt
.user
.planes
= (float (*) [DRAW_TOTAL_CLIP_PLANES
][4]) &(draw
->plane
[0]);
162 draw
->pt
.user
.eltMax
= ~0;
164 if (!draw_pipeline_init( draw
))
167 if (!draw_pt_init( draw
))
170 if (!draw_vs_init( draw
))
173 if (!draw_gs_init( draw
))
176 draw
->quads_always_flatshade_last
= !draw
->pipe
->screen
->get_param(
177 draw
->pipe
->screen
, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION
);
179 draw
->floating_point_depth
= false;
185 * Called whenever we're starting to draw a new instance.
186 * Some internal structures don't want to have to reset internal
187 * members on each invocation (because their state might have to persist
188 * between multiple primitive restart rendering call) but might have to
189 * for each new instance.
190 * This is particularly the case for primitive id's in geometry shader.
192 void draw_new_instance(struct draw_context
*draw
)
194 draw_geometry_shader_new_instance(draw
->gs
.geometry_shader
);
195 draw_prim_assembler_new_instance(draw
->ia
);
199 void draw_destroy( struct draw_context
*draw
)
201 struct pipe_context
*pipe
;
209 /* free any rasterizer CSOs that we may have created.
211 for (i
= 0; i
< 2; i
++) {
212 for (j
= 0; j
< 2; j
++) {
213 if (draw
->rasterizer_no_cull
[i
][j
]) {
214 pipe
->delete_rasterizer_state(pipe
, draw
->rasterizer_no_cull
[i
][j
]);
219 for (i
= 0; i
< draw
->pt
.nr_vertex_buffers
; i
++)
220 pipe_vertex_buffer_unreference(&draw
->pt
.vertex_buffer
[i
]);
222 /* Not so fast -- we're just borrowing this at the moment.
225 draw->render->destroy( draw->render );
228 draw_prim_assembler_destroy(draw
->ia
);
229 draw_pipeline_destroy( draw
);
230 draw_pt_destroy( draw
);
231 draw_vs_destroy( draw
);
232 draw_gs_destroy( draw
);
233 #ifdef LLVM_AVAILABLE
235 draw_llvm_destroy( draw
->llvm
);
243 void draw_flush( struct draw_context
*draw
)
245 draw_do_flush( draw
, DRAW_FLUSH_BACKEND
);
250 * Specify the depth stencil format for the draw pipeline. This function
251 * determines the Minimum Resolvable Depth factor for polygon offset.
252 * This factor potentially depends on the number of Z buffer bits,
253 * the rasterization algorithm and the arithmetic performed on Z
254 * values between vertex shading and rasterization.
256 void draw_set_zs_format(struct draw_context
*draw
, enum pipe_format format
)
258 const struct util_format_description
*desc
= util_format_description(format
);
260 draw
->floating_point_depth
=
261 (util_get_depth_format_type(desc
) == UTIL_FORMAT_TYPE_FLOAT
);
263 draw
->mrd
= util_get_depth_format_mrd(desc
);
268 draw_is_vs_window_space(struct draw_context
*draw
)
270 if (draw
->vs
.vertex_shader
) {
271 struct tgsi_shader_info
*info
= &draw
->vs
.vertex_shader
->info
;
273 return info
->properties
[TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION
] != 0;
280 draw_update_clip_flags(struct draw_context
*draw
)
282 bool window_space
= draw_is_vs_window_space(draw
);
284 draw
->clip_xy
= !draw
->driver
.bypass_clip_xy
&& !window_space
;
285 draw
->guard_band_xy
= (!draw
->driver
.bypass_clip_xy
&&
286 draw
->driver
.guard_band_xy
);
287 draw
->clip_z
= (!draw
->driver
.bypass_clip_z
&&
288 draw
->rasterizer
&& draw
->rasterizer
->depth_clip_near
) &&
290 draw
->clip_user
= draw
->rasterizer
&&
291 draw
->rasterizer
->clip_plane_enable
!= 0 &&
293 draw
->guard_band_points_xy
= draw
->guard_band_xy
||
294 (draw
->driver
.bypass_clip_points
&&
296 draw
->rasterizer
->point_tri_clip
));
301 draw_update_viewport_flags(struct draw_context
*draw
)
303 bool window_space
= draw_is_vs_window_space(draw
);
305 draw
->bypass_viewport
= window_space
|| draw
->identity_viewport
;
310 * Register new primitive rasterization/rendering state.
311 * This causes the drawing pipeline to be rebuilt.
313 void draw_set_rasterizer_state( struct draw_context
*draw
,
314 const struct pipe_rasterizer_state
*raster
,
317 if (!draw
->suspend_flushing
) {
318 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
320 draw
->rasterizer
= raster
;
321 draw
->rast_handle
= rast_handle
;
322 draw_update_clip_flags(draw
);
326 /* With a little more work, llvmpipe will be able to turn this off and
327 * do its own x/y clipping.
329 * Some hardware can turn off clipping altogether - in particular any
330 * hardware with a TNL unit can do its own clipping, even if it is
331 * relying on the draw module for some other reason.
332 * Setting bypass_clip_points to achieve d3d-style point clipping (the driver
333 * will need to do the "vp scissoring") _requires_ the driver to implement
334 * wide points / point sprites itself (points will still be clipped if rasterizer
335 * point_tri_clip isn't set). Only relevant if bypass_clip_xy isn't set.
337 void draw_set_driver_clipping( struct draw_context
*draw
,
338 boolean bypass_clip_xy
,
339 boolean bypass_clip_z
,
340 boolean guard_band_xy
,
341 boolean bypass_clip_points
)
343 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
345 draw
->driver
.bypass_clip_xy
= bypass_clip_xy
;
346 draw
->driver
.bypass_clip_z
= bypass_clip_z
;
347 draw
->driver
.guard_band_xy
= guard_band_xy
;
348 draw
->driver
.bypass_clip_points
= bypass_clip_points
;
349 draw_update_clip_flags(draw
);
354 * Plug in the primitive rendering/rasterization stage (which is the last
355 * stage in the drawing pipeline).
356 * This is provided by the device driver.
358 void draw_set_rasterize_stage( struct draw_context
*draw
,
359 struct draw_stage
*stage
)
361 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
363 draw
->pipeline
.rasterize
= stage
;
368 * Set the draw module's clipping state.
370 void draw_set_clip_state( struct draw_context
*draw
,
371 const struct pipe_clip_state
*clip
)
373 draw_do_flush(draw
, DRAW_FLUSH_PARAMETER_CHANGE
);
375 memcpy(&draw
->plane
[6], clip
->ucp
, sizeof(clip
->ucp
));
380 * Set the draw module's viewport state.
382 void draw_set_viewport_states( struct draw_context
*draw
,
384 unsigned num_viewports
,
385 const struct pipe_viewport_state
*vps
)
387 const struct pipe_viewport_state
*viewport
= vps
;
388 draw_do_flush(draw
, DRAW_FLUSH_PARAMETER_CHANGE
);
390 debug_assert(start_slot
< PIPE_MAX_VIEWPORTS
);
391 debug_assert((start_slot
+ num_viewports
) <= PIPE_MAX_VIEWPORTS
);
393 memcpy(draw
->viewports
+ start_slot
, vps
,
394 sizeof(struct pipe_viewport_state
) * num_viewports
);
396 draw
->identity_viewport
= (num_viewports
== 1) &&
397 (viewport
->scale
[0] == 1.0f
&&
398 viewport
->scale
[1] == 1.0f
&&
399 viewport
->scale
[2] == 1.0f
&&
400 viewport
->translate
[0] == 0.0f
&&
401 viewport
->translate
[1] == 0.0f
&&
402 viewport
->translate
[2] == 0.0f
);
403 draw_update_viewport_flags(draw
);
409 draw_set_vertex_buffers(struct draw_context
*draw
,
410 unsigned start_slot
, unsigned count
,
411 const struct pipe_vertex_buffer
*buffers
)
413 assert(start_slot
+ count
<= PIPE_MAX_ATTRIBS
);
415 util_set_vertex_buffers_count(draw
->pt
.vertex_buffer
,
416 &draw
->pt
.nr_vertex_buffers
,
417 buffers
, start_slot
, count
);
422 draw_set_vertex_elements(struct draw_context
*draw
,
424 const struct pipe_vertex_element
*elements
)
426 assert(count
<= PIPE_MAX_ATTRIBS
);
428 /* We could improve this by only flushing the frontend and the fetch part
429 * of the middle. This would avoid recalculating the emit keys.*/
430 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
432 memcpy(draw
->pt
.vertex_element
, elements
, count
* sizeof(elements
[0]));
433 draw
->pt
.nr_vertex_elements
= count
;
438 * Tell drawing context where to find mapped vertex buffers.
441 draw_set_mapped_vertex_buffer(struct draw_context
*draw
,
442 unsigned attr
, const void *buffer
,
445 draw
->pt
.user
.vbuffer
[attr
].map
= buffer
;
446 draw
->pt
.user
.vbuffer
[attr
].size
= size
;
451 draw_set_mapped_constant_buffer(struct draw_context
*draw
,
452 enum pipe_shader_type shader_type
,
457 debug_assert(shader_type
== PIPE_SHADER_VERTEX
||
458 shader_type
== PIPE_SHADER_GEOMETRY
||
459 shader_type
== PIPE_SHADER_TESS_CTRL
||
460 shader_type
== PIPE_SHADER_TESS_EVAL
);
461 debug_assert(slot
< PIPE_MAX_CONSTANT_BUFFERS
);
463 draw_do_flush(draw
, DRAW_FLUSH_PARAMETER_CHANGE
);
465 switch (shader_type
) {
466 case PIPE_SHADER_VERTEX
:
467 draw
->pt
.user
.vs_constants
[slot
] = buffer
;
468 draw
->pt
.user
.vs_constants_size
[slot
] = size
;
470 case PIPE_SHADER_GEOMETRY
:
471 draw
->pt
.user
.gs_constants
[slot
] = buffer
;
472 draw
->pt
.user
.gs_constants_size
[slot
] = size
;
474 case PIPE_SHADER_TESS_CTRL
:
475 draw
->pt
.user
.tcs_constants
[slot
] = buffer
;
476 draw
->pt
.user
.tcs_constants_size
[slot
] = size
;
478 case PIPE_SHADER_TESS_EVAL
:
479 draw
->pt
.user
.tes_constants
[slot
] = buffer
;
480 draw
->pt
.user
.tes_constants_size
[slot
] = size
;
483 assert(0 && "invalid shader type in draw_set_mapped_constant_buffer");
488 draw_set_mapped_shader_buffer(struct draw_context
*draw
,
489 enum pipe_shader_type shader_type
,
494 debug_assert(shader_type
== PIPE_SHADER_VERTEX
||
495 shader_type
== PIPE_SHADER_GEOMETRY
||
496 shader_type
== PIPE_SHADER_TESS_CTRL
||
497 shader_type
== PIPE_SHADER_TESS_EVAL
);
498 debug_assert(slot
< PIPE_MAX_SHADER_BUFFERS
);
500 draw_do_flush(draw
, DRAW_FLUSH_PARAMETER_CHANGE
);
502 switch (shader_type
) {
503 case PIPE_SHADER_VERTEX
:
504 draw
->pt
.user
.vs_ssbos
[slot
] = buffer
;
505 draw
->pt
.user
.vs_ssbos_size
[slot
] = size
;
507 case PIPE_SHADER_GEOMETRY
:
508 draw
->pt
.user
.gs_ssbos
[slot
] = buffer
;
509 draw
->pt
.user
.gs_ssbos_size
[slot
] = size
;
511 case PIPE_SHADER_TESS_CTRL
:
512 draw
->pt
.user
.tcs_ssbos
[slot
] = buffer
;
513 draw
->pt
.user
.tcs_ssbos_size
[slot
] = size
;
515 case PIPE_SHADER_TESS_EVAL
:
516 draw
->pt
.user
.tes_ssbos
[slot
] = buffer
;
517 draw
->pt
.user
.tes_ssbos_size
[slot
] = size
;
520 assert(0 && "invalid shader type in draw_set_mapped_shader_buffer");
525 * Tells the draw module to draw points with triangles if their size
526 * is greater than this threshold.
529 draw_wide_point_threshold(struct draw_context
*draw
, float threshold
)
531 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
532 draw
->pipeline
.wide_point_threshold
= threshold
;
537 * Should the draw module handle point->quad conversion for drawing sprites?
540 draw_wide_point_sprites(struct draw_context
*draw
, boolean draw_sprite
)
542 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
543 draw
->pipeline
.wide_point_sprites
= draw_sprite
;
548 * Tells the draw module to draw lines with triangles if their width
549 * is greater than this threshold.
552 draw_wide_line_threshold(struct draw_context
*draw
, float threshold
)
554 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
555 draw
->pipeline
.wide_line_threshold
= roundf(threshold
);
560 * Tells the draw module whether or not to implement line stipple.
563 draw_enable_line_stipple(struct draw_context
*draw
, boolean enable
)
565 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
566 draw
->pipeline
.line_stipple
= enable
;
571 * Tells draw module whether to convert points to quads for sprite mode.
574 draw_enable_point_sprites(struct draw_context
*draw
, boolean enable
)
576 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
577 draw
->pipeline
.point_sprite
= enable
;
582 draw_set_force_passthrough( struct draw_context
*draw
, boolean enable
)
584 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
585 draw
->force_passthrough
= enable
;
591 * Allocate an extra vertex/geometry shader vertex attribute, if it doesn't
594 * This is used by some of the optional draw module stages such
595 * as wide_point which may need to allocate additional generic/texcoord
599 draw_alloc_extra_vertex_attrib(struct draw_context
*draw
,
600 uint semantic_name
, uint semantic_index
)
606 slot
= draw_find_shader_output(draw
, semantic_name
, semantic_index
);
611 num_outputs
= draw_current_shader_outputs(draw
);
612 n
= draw
->extra_shader_outputs
.num
;
614 assert(n
< ARRAY_SIZE(draw
->extra_shader_outputs
.semantic_name
));
616 draw
->extra_shader_outputs
.semantic_name
[n
] = semantic_name
;
617 draw
->extra_shader_outputs
.semantic_index
[n
] = semantic_index
;
618 draw
->extra_shader_outputs
.slot
[n
] = num_outputs
+ n
;
619 draw
->extra_shader_outputs
.num
++;
621 return draw
->extra_shader_outputs
.slot
[n
];
626 * Remove all extra vertex attributes that were allocated with
627 * draw_alloc_extra_vertex_attrib().
630 draw_remove_extra_vertex_attribs(struct draw_context
*draw
)
632 draw
->extra_shader_outputs
.num
= 0;
637 * If a geometry shader is present, return its info, else the vertex shader's
640 struct tgsi_shader_info
*
641 draw_get_shader_info(const struct draw_context
*draw
)
644 if (draw
->gs
.geometry_shader
) {
645 return &draw
->gs
.geometry_shader
->info
;
646 } else if (draw
->tes
.tess_eval_shader
) {
647 return &draw
->tes
.tess_eval_shader
->info
;
649 return &draw
->vs
.vertex_shader
->info
;
654 * Prepare outputs slots from the draw module
656 * Certain parts of the draw module can emit additional
657 * outputs that can be quite useful to the backends, a good
658 * example of it is the process of decomposing primitives
659 * into wireframes (aka. lines) which normally would lose
660 * the face-side information, but using this method we can
661 * inject another shader output which passes the original
662 * face side information to the backend.
665 draw_prepare_shader_outputs(struct draw_context
*draw
)
667 draw_remove_extra_vertex_attribs(draw
);
668 draw_prim_assembler_prepare_outputs(draw
->ia
);
669 draw_unfilled_prepare_outputs(draw
, draw
->pipeline
.unfilled
);
670 if (draw
->pipeline
.aapoint
)
671 draw_aapoint_prepare_outputs(draw
, draw
->pipeline
.aapoint
);
672 if (draw
->pipeline
.aaline
)
673 draw_aaline_prepare_outputs(draw
, draw
->pipeline
.aaline
);
677 * Ask the draw module for the location/slot of the given vertex attribute in
678 * a post-transformed vertex.
680 * With this function, drivers that use the draw module should have no reason
681 * to track the current vertex/geometry shader.
683 * Note that the draw module may sometimes generate vertices with extra
684 * attributes (such as texcoords for AA lines). The driver can call this
685 * function to find those attributes.
687 * -1 is returned if the attribute is not found since this is
688 * an undefined situation. Note, that zero is valid and can
689 * be used by any of the attributes, because position is not
690 * required to be attribute 0 or even at all present.
693 draw_find_shader_output(const struct draw_context
*draw
,
694 uint semantic_name
, uint semantic_index
)
696 const struct tgsi_shader_info
*info
= draw_get_shader_info(draw
);
699 for (i
= 0; i
< info
->num_outputs
; i
++) {
700 if (info
->output_semantic_name
[i
] == semantic_name
&&
701 info
->output_semantic_index
[i
] == semantic_index
)
705 /* Search the extra vertex attributes */
706 for (i
= 0; i
< draw
->extra_shader_outputs
.num
; i
++) {
707 if (draw
->extra_shader_outputs
.semantic_name
[i
] == semantic_name
&&
708 draw
->extra_shader_outputs
.semantic_index
[i
] == semantic_index
) {
709 return draw
->extra_shader_outputs
.slot
[i
];
718 * Return total number of the shader outputs. This function is similar to
719 * draw_current_shader_outputs() but this function also counts any extra
720 * vertex/geometry output attributes that may be filled in by some draw
721 * stages (such as AA point, AA line).
723 * If geometry shader is present, its output will be returned,
724 * if not vertex shader is used.
727 draw_num_shader_outputs(const struct draw_context
*draw
)
729 const struct tgsi_shader_info
*info
= draw_get_shader_info(draw
);
732 count
= info
->num_outputs
;
733 count
+= draw
->extra_shader_outputs
.num
;
740 * Return total number of the vertex shader outputs. This function
741 * also counts any extra vertex output attributes that may
742 * be filled in by some draw stages (such as AA point, AA line,
746 draw_total_vs_outputs(const struct draw_context
*draw
)
748 const struct tgsi_shader_info
*info
= &draw
->vs
.vertex_shader
->info
;
750 return info
->num_outputs
+ draw
->extra_shader_outputs
.num
;
754 * Return total number of the geometry shader outputs. This function
755 * also counts any extra geometry output attributes that may
756 * be filled in by some draw stages (such as AA point, AA line, front
760 draw_total_gs_outputs(const struct draw_context
*draw
)
762 const struct tgsi_shader_info
*info
;
764 if (!draw
->gs
.geometry_shader
)
767 info
= &draw
->gs
.geometry_shader
->info
;
769 return info
->num_outputs
+ draw
->extra_shader_outputs
.num
;
773 * Return total number of the tess ctrl shader outputs.
776 draw_total_tcs_outputs(const struct draw_context
*draw
)
778 const struct tgsi_shader_info
*info
;
780 if (!draw
->tcs
.tess_ctrl_shader
)
783 info
= &draw
->tcs
.tess_ctrl_shader
->info
;
785 return info
->num_outputs
;
789 * Return total number of the tess eval shader outputs.
792 draw_total_tes_outputs(const struct draw_context
*draw
)
794 const struct tgsi_shader_info
*info
;
796 if (!draw
->tes
.tess_eval_shader
)
799 info
= &draw
->tes
.tess_eval_shader
->info
;
801 return info
->num_outputs
+ draw
->extra_shader_outputs
.num
;
805 * Provide TGSI sampler objects for vertex/geometry shaders that use
806 * texture fetches. This state only needs to be set once per context.
807 * This might only be used by software drivers for the time being.
810 draw_texture_sampler(struct draw_context
*draw
,
811 enum pipe_shader_type shader
,
812 struct tgsi_sampler
*sampler
)
815 case PIPE_SHADER_VERTEX
:
816 draw
->vs
.tgsi
.sampler
= sampler
;
818 case PIPE_SHADER_GEOMETRY
:
819 draw
->gs
.tgsi
.sampler
= sampler
;
821 case PIPE_SHADER_TESS_CTRL
:
822 draw
->tcs
.tgsi
.sampler
= sampler
;
824 case PIPE_SHADER_TESS_EVAL
:
825 draw
->tes
.tgsi
.sampler
= sampler
;
834 * Provide TGSI image objects for vertex/geometry shaders that use
835 * texture fetches. This state only needs to be set once per context.
836 * This might only be used by software drivers for the time being.
839 draw_image(struct draw_context
*draw
,
840 enum pipe_shader_type shader
,
841 struct tgsi_image
*image
)
844 case PIPE_SHADER_VERTEX
:
845 draw
->vs
.tgsi
.image
= image
;
847 case PIPE_SHADER_GEOMETRY
:
848 draw
->gs
.tgsi
.image
= image
;
850 case PIPE_SHADER_TESS_CTRL
:
851 draw
->tcs
.tgsi
.image
= image
;
853 case PIPE_SHADER_TESS_EVAL
:
854 draw
->tes
.tgsi
.image
= image
;
863 * Provide TGSI buffer objects for vertex/geometry shaders that use
864 * load/store/atomic ops. This state only needs to be set once per context.
865 * This might only be used by software drivers for the time being.
868 draw_buffer(struct draw_context
*draw
,
869 enum pipe_shader_type shader
,
870 struct tgsi_buffer
*buffer
)
873 case PIPE_SHADER_VERTEX
:
874 draw
->vs
.tgsi
.buffer
= buffer
;
876 case PIPE_SHADER_GEOMETRY
:
877 draw
->gs
.tgsi
.buffer
= buffer
;
879 case PIPE_SHADER_TESS_CTRL
:
880 draw
->tcs
.tgsi
.buffer
= buffer
;
882 case PIPE_SHADER_TESS_EVAL
:
883 draw
->tes
.tgsi
.buffer
= buffer
;
892 void draw_set_render( struct draw_context
*draw
,
893 struct vbuf_render
*render
)
895 draw
->render
= render
;
900 * Tell the draw module where vertex indexes/elements are located, and
901 * their size (in bytes).
904 draw_set_indexes(struct draw_context
*draw
,
905 const void *elements
, unsigned elem_size
,
906 unsigned elem_buffer_space
)
908 assert(elem_size
== 0 ||
912 draw
->pt
.user
.elts
= elements
;
913 draw
->pt
.user
.eltSizeIB
= elem_size
;
915 draw
->pt
.user
.eltMax
= elem_buffer_space
/ elem_size
;
917 draw
->pt
.user
.eltMax
= 0;
923 void draw_do_flush( struct draw_context
*draw
, unsigned flags
)
925 if (!draw
->suspend_flushing
)
927 assert(!draw
->flushing
); /* catch inadvertant recursion */
929 draw
->flushing
= TRUE
;
931 draw_pipeline_flush( draw
, flags
);
933 draw_pt_flush( draw
, flags
);
935 draw
->flushing
= FALSE
;
941 * Return the number of output attributes produced by the geometry
942 * shader, if present. If no geometry shader, return the number of
943 * outputs from the vertex shader.
944 * \sa draw_num_shader_outputs
947 draw_current_shader_outputs(const struct draw_context
*draw
)
949 if (draw
->gs
.geometry_shader
)
950 return draw
->gs
.num_gs_outputs
;
951 return draw
->vs
.num_vs_outputs
;
956 * Return the index of the shader output which will contain the
960 draw_current_shader_position_output(const struct draw_context
*draw
)
962 if (draw
->gs
.geometry_shader
)
963 return draw
->gs
.position_output
;
964 if (draw
->tes
.tess_eval_shader
)
965 return draw
->tes
.position_output
;
966 return draw
->vs
.position_output
;
971 * Return the index of the shader output which will contain the
975 draw_current_shader_viewport_index_output(const struct draw_context
*draw
)
977 if (draw
->gs
.geometry_shader
)
978 return draw
->gs
.geometry_shader
->viewport_index_output
;
979 else if (draw
->tes
.tess_eval_shader
)
980 return draw
->tes
.tess_eval_shader
->viewport_index_output
;
981 return draw
->vs
.vertex_shader
->viewport_index_output
;
985 * Returns true if there's a geometry shader bound and the geometry
986 * shader writes out a viewport index.
989 draw_current_shader_uses_viewport_index(const struct draw_context
*draw
)
991 if (draw
->gs
.geometry_shader
)
992 return draw
->gs
.geometry_shader
->info
.writes_viewport_index
;
993 return draw
->vs
.vertex_shader
->info
.writes_viewport_index
;
998 * Return the index of the shader output which will contain the
999 * clip vertex position.
1000 * Note we don't support clipvertex output in the gs. For clipping
1001 * to work correctly hence we return ordinary position output instead.
1004 draw_current_shader_clipvertex_output(const struct draw_context
*draw
)
1006 if (draw
->gs
.geometry_shader
)
1007 return draw
->gs
.position_output
;
1008 if (draw
->tes
.tess_eval_shader
)
1009 return draw
->tes
.position_output
;
1010 return draw
->vs
.clipvertex_output
;
1014 draw_current_shader_ccdistance_output(const struct draw_context
*draw
, int index
)
1016 debug_assert(index
< PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT
);
1017 if (draw
->gs
.geometry_shader
)
1018 return draw
->gs
.geometry_shader
->ccdistance_output
[index
];
1019 if (draw
->tes
.tess_eval_shader
)
1020 return draw
->tes
.tess_eval_shader
->ccdistance_output
[index
];
1021 return draw
->vs
.ccdistance_output
[index
];
1026 draw_current_shader_num_written_clipdistances(const struct draw_context
*draw
)
1028 if (draw
->gs
.geometry_shader
)
1029 return draw
->gs
.geometry_shader
->info
.num_written_clipdistance
;
1030 if (draw
->tes
.tess_eval_shader
)
1031 return draw
->tes
.tess_eval_shader
->info
.num_written_clipdistance
;
1032 return draw
->vs
.vertex_shader
->info
.num_written_clipdistance
;
1036 draw_current_shader_num_written_culldistances(const struct draw_context
*draw
)
1038 if (draw
->gs
.geometry_shader
)
1039 return draw
->gs
.geometry_shader
->info
.num_written_culldistance
;
1040 if (draw
->tes
.tess_eval_shader
)
1041 return draw
->tes
.tess_eval_shader
->info
.num_written_culldistance
;
1042 return draw
->vs
.vertex_shader
->info
.num_written_culldistance
;
1046 * Return a pointer/handle for a driver/CSO rasterizer object which
1047 * disabled culling, stippling, unfilled tris, etc.
1048 * This is used by some pipeline stages (such as wide_point, aa_line
1049 * and aa_point) which convert points/lines into triangles. In those
1050 * cases we don't want to accidentally cull the triangles.
1052 * \param scissor should the rasterizer state enable scissoring?
1053 * \param flatshade should the rasterizer state use flat shading?
1054 * \return rasterizer CSO handle
1057 draw_get_rasterizer_no_cull( struct draw_context
*draw
,
1061 if (!draw
->rasterizer_no_cull
[scissor
][flatshade
]) {
1063 struct pipe_context
*pipe
= draw
->pipe
;
1064 struct pipe_rasterizer_state rast
;
1066 memset(&rast
, 0, sizeof(rast
));
1067 rast
.scissor
= scissor
;
1068 rast
.flatshade
= flatshade
;
1070 rast
.half_pixel_center
= draw
->rasterizer
->half_pixel_center
;
1071 rast
.bottom_edge_rule
= draw
->rasterizer
->bottom_edge_rule
;
1072 rast
.clip_halfz
= draw
->rasterizer
->clip_halfz
;
1074 draw
->rasterizer_no_cull
[scissor
][flatshade
] =
1075 pipe
->create_rasterizer_state(pipe
, &rast
);
1077 return draw
->rasterizer_no_cull
[scissor
][flatshade
];
1081 draw_set_mapped_so_targets(struct draw_context
*draw
,
1083 struct draw_so_target
*targets
[PIPE_MAX_SO_BUFFERS
])
1087 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
1089 for (i
= 0; i
< num_targets
; i
++)
1090 draw
->so
.targets
[i
] = targets
[i
];
1091 for (i
= num_targets
; i
< PIPE_MAX_SO_BUFFERS
; i
++)
1092 draw
->so
.targets
[i
] = NULL
;
1094 draw
->so
.num_targets
= num_targets
;
1098 draw_set_sampler_views(struct draw_context
*draw
,
1099 enum pipe_shader_type shader_stage
,
1100 struct pipe_sampler_view
**views
,
1105 debug_assert(shader_stage
< PIPE_SHADER_TYPES
);
1106 debug_assert(num
<= PIPE_MAX_SHADER_SAMPLER_VIEWS
);
1108 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
1110 for (i
= 0; i
< num
; ++i
)
1111 draw
->sampler_views
[shader_stage
][i
] = views
[i
];
1112 for (i
= num
; i
< draw
->num_sampler_views
[shader_stage
]; ++i
)
1113 draw
->sampler_views
[shader_stage
][i
] = NULL
;
1115 draw
->num_sampler_views
[shader_stage
] = num
;
1119 draw_set_samplers(struct draw_context
*draw
,
1120 enum pipe_shader_type shader_stage
,
1121 struct pipe_sampler_state
**samplers
,
1126 debug_assert(shader_stage
< PIPE_SHADER_TYPES
);
1127 debug_assert(num
<= PIPE_MAX_SAMPLERS
);
1129 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
1131 for (i
= 0; i
< num
; ++i
)
1132 draw
->samplers
[shader_stage
][i
] = samplers
[i
];
1133 for (i
= num
; i
< PIPE_MAX_SAMPLERS
; ++i
)
1134 draw
->samplers
[shader_stage
][i
] = NULL
;
1136 draw
->num_samplers
[shader_stage
] = num
;
1138 #ifdef LLVM_AVAILABLE
1140 draw_llvm_set_sampler_state(draw
, shader_stage
);
1145 draw_set_images(struct draw_context
*draw
,
1146 enum pipe_shader_type shader_stage
,
1147 struct pipe_image_view
*views
,
1152 debug_assert(shader_stage
< PIPE_SHADER_TYPES
);
1153 debug_assert(num
<= PIPE_MAX_SHADER_IMAGES
);
1155 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
1157 for (i
= 0; i
< num
; ++i
)
1158 draw
->images
[shader_stage
][i
] = &views
[i
];
1159 for (i
= num
; i
< draw
->num_sampler_views
[shader_stage
]; ++i
)
1160 draw
->images
[shader_stage
][i
] = NULL
;
1162 draw
->num_images
[shader_stage
] = num
;
1166 draw_set_mapped_texture(struct draw_context
*draw
,
1167 enum pipe_shader_type shader_stage
,
1169 uint32_t width
, uint32_t height
, uint32_t depth
,
1170 uint32_t first_level
, uint32_t last_level
,
1171 uint32_t num_samples
,
1172 uint32_t sample_stride
,
1173 const void *base_ptr
,
1174 uint32_t row_stride
[PIPE_MAX_TEXTURE_LEVELS
],
1175 uint32_t img_stride
[PIPE_MAX_TEXTURE_LEVELS
],
1176 uint32_t mip_offsets
[PIPE_MAX_TEXTURE_LEVELS
])
1178 #ifdef LLVM_AVAILABLE
1180 draw_llvm_set_mapped_texture(draw
,
1183 width
, height
, depth
, first_level
,
1184 last_level
, num_samples
, sample_stride
, base_ptr
,
1185 row_stride
, img_stride
, mip_offsets
);
1190 draw_set_mapped_image(struct draw_context
*draw
,
1191 enum pipe_shader_type shader_stage
,
1193 uint32_t width
, uint32_t height
, uint32_t depth
,
1194 const void *base_ptr
,
1195 uint32_t row_stride
,
1196 uint32_t img_stride
,
1197 uint32_t num_samples
,
1198 uint32_t sample_stride
)
1200 #ifdef LLVM_AVAILABLE
1202 draw_llvm_set_mapped_image(draw
,
1205 width
, height
, depth
,
1207 row_stride
, img_stride
,
1208 num_samples
, sample_stride
);
1213 * XXX: Results for PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS because there are two
1214 * different ways of setting textures, and drivers typically only support one.
1217 draw_get_shader_param_no_llvm(enum pipe_shader_type shader
,
1218 enum pipe_shader_cap param
)
1221 case PIPE_SHADER_VERTEX
:
1222 case PIPE_SHADER_GEOMETRY
:
1223 return tgsi_exec_get_shader_param(param
);
1230 * XXX: Results for PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS because there are two
1231 * different ways of setting textures, and drivers typically only support one.
1232 * Drivers requesting a draw context explicitly without llvm must call
1233 * draw_get_shader_param_no_llvm instead.
1236 draw_get_shader_param(enum pipe_shader_type shader
, enum pipe_shader_cap param
)
1239 #ifdef LLVM_AVAILABLE
1240 if (draw_get_option_use_llvm()) {
1242 case PIPE_SHADER_VERTEX
:
1243 case PIPE_SHADER_GEOMETRY
:
1244 case PIPE_SHADER_TESS_CTRL
:
1245 case PIPE_SHADER_TESS_EVAL
:
1246 return gallivm_get_shader_param(param
);
1253 return draw_get_shader_param_no_llvm(shader
, param
);
1257 * Enables or disables collection of statistics.
1259 * Draw module is capable of generating statistics for the vertex
1260 * processing pipeline. Collection of that data isn't free and so
1261 * it's disabled by default. The users of the module can enable
1262 * (or disable) this functionality through this function.
1263 * The actual data will be emitted through the VBUF interface,
1264 * the 'pipeline_statistics' callback to be exact.
1267 draw_collect_pipeline_statistics(struct draw_context
*draw
,
1270 draw
->collect_statistics
= enable
;
1274 * Enable/disable primitives generated gathering.
1276 void draw_collect_primitives_generated(struct draw_context
*draw
,
1279 draw
->collect_primgen
= enable
;
1283 * Computes clipper invocation statistics.
1285 * Figures out how many primitives would have been
1286 * sent to the clipper given the specified
1290 draw_stats_clipper_primitives(struct draw_context
*draw
,
1291 const struct draw_prim_info
*prim_info
)
1293 if (draw
->collect_statistics
) {
1295 for (i
= 0; i
< prim_info
->primitive_count
; i
++) {
1296 draw
->statistics
.c_invocations
+=
1297 u_decomposed_prims_for_vertices(prim_info
->prim
,
1298 prim_info
->primitive_lengths
[i
]);
1305 * Returns true if the draw module will inject the frontface
1306 * info into the outputs.
1308 * Given the specified primitive and rasterizer state
1309 * the function will figure out if the draw module
1310 * will inject the front-face information into shader
1311 * outputs. This is done to preserve the front-facing
1312 * info when decomposing primitives into wireframes.
1315 draw_will_inject_frontface(const struct draw_context
*draw
)
1317 unsigned reduced_prim
= u_reduced_prim(draw
->pt
.prim
);
1318 const struct pipe_rasterizer_state
*rast
= draw
->rasterizer
;
1320 if (reduced_prim
!= PIPE_PRIM_TRIANGLES
) {
1325 (rast
->fill_front
!= PIPE_POLYGON_MODE_FILL
||
1326 rast
->fill_back
!= PIPE_POLYGON_MODE_FILL
));
1330 draw_set_tess_state(struct draw_context
*draw
,
1331 const float default_outer_level
[4],
1332 const float default_inner_level
[2])
1334 for (unsigned i
= 0; i
< 4; i
++)
1335 draw
->default_outer_tess_level
[i
] = default_outer_level
[i
];
1336 for (unsigned i
= 0; i
< 2; i
++)
1337 draw
->default_inner_tess_level
[i
] = default_inner_level
[i
];
1341 draw_set_disk_cache_callbacks(struct draw_context
*draw
,
1343 void (*find_shader
)(void *cookie
,
1344 struct lp_cached_code
*cache
,
1345 unsigned char ir_sha1_cache_key
[20]),
1346 void (*insert_shader
)(void *cookie
,
1347 struct lp_cached_code
*cache
,
1348 unsigned char ir_sha1_cache_key
[20]))
1350 draw
->disk_cache_find_shader
= find_shader
;
1351 draw
->disk_cache_insert_shader
= insert_shader
;
1352 draw
->disk_cache_cookie
= data_cookie
;