2 * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
24 /* r300_render: Vertex and index buffer primitive emission. Contains both
25 * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */
27 #include "draw/draw_context.h"
28 #include "draw/draw_vbuf.h"
30 #include "util/u_inlines.h"
32 #include "util/u_format.h"
33 #include "util/u_memory.h"
34 #include "util/u_upload_mgr.h"
35 #include "util/u_prim.h"
38 #include "r300_context.h"
39 #include "r300_screen_buffer.h"
40 #include "r300_emit.h"
42 #include "r300_state_derived.h"
46 #define IMMD_DWORDS 32
48 static uint32_t r300_translate_primitive(unsigned prim
)
51 case PIPE_PRIM_POINTS
:
52 return R300_VAP_VF_CNTL__PRIM_POINTS
;
54 return R300_VAP_VF_CNTL__PRIM_LINES
;
55 case PIPE_PRIM_LINE_LOOP
:
56 return R300_VAP_VF_CNTL__PRIM_LINE_LOOP
;
57 case PIPE_PRIM_LINE_STRIP
:
58 return R300_VAP_VF_CNTL__PRIM_LINE_STRIP
;
59 case PIPE_PRIM_TRIANGLES
:
60 return R300_VAP_VF_CNTL__PRIM_TRIANGLES
;
61 case PIPE_PRIM_TRIANGLE_STRIP
:
62 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP
;
63 case PIPE_PRIM_TRIANGLE_FAN
:
64 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN
;
66 return R300_VAP_VF_CNTL__PRIM_QUADS
;
67 case PIPE_PRIM_QUAD_STRIP
:
68 return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP
;
69 case PIPE_PRIM_POLYGON
:
70 return R300_VAP_VF_CNTL__PRIM_POLYGON
;
76 static uint32_t r300_provoking_vertex_fixes(struct r300_context
*r300
,
79 struct r300_rs_state
* rs
= (struct r300_rs_state
*)r300
->rs_state
.state
;
80 uint32_t color_control
= rs
->color_control
;
82 /* By default (see r300_state.c:r300_create_rs_state) color_control is
83 * initialized to provoking the first vertex.
85 * Triangle fans must be reduced to the second vertex, not the first, in
86 * Gallium flatshade-first mode, as per the GL spec.
87 * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt)
89 * Quads never provoke correctly in flatshade-first mode. The first
90 * vertex is never considered as provoking, so only the second, third,
91 * and fourth vertices can be selected, and both "third" and "last" modes
92 * select the fourth vertex. This is probably due to D3D lacking quads.
94 * Similarly, polygons reduce to the first, not the last, vertex, when in
95 * "last" mode, and all other modes start from the second vertex.
100 if (rs
->rs
.flatshade_first
) {
102 case PIPE_PRIM_TRIANGLE_FAN
:
103 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND
;
105 case PIPE_PRIM_QUADS
:
106 case PIPE_PRIM_QUAD_STRIP
:
107 case PIPE_PRIM_POLYGON
:
108 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
111 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST
;
115 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
118 return color_control
;
121 void r500_emit_index_bias(struct r300_context
*r300
, int index_bias
)
126 OUT_CS_REG(R500_VAP_INDEX_OFFSET
,
127 (index_bias
& 0xFFFFFF) | (index_bias
< 0 ? 1<<24 : 0));
131 /* This function splits the index bias value into two parts:
132 * - buffer_offset: the value that can be safely added to buffer offsets
133 * in r300_emit_aos (it must yield a positive offset when added to
134 * a vertex buffer offset)
135 * - index_offset: the value that must be manually subtracted from indices
136 * in an index buffer to achieve negative offsets. */
137 static void r300_split_index_bias(struct r300_context
*r300
, int index_bias
,
138 int *buffer_offset
, int *index_offset
)
140 struct pipe_vertex_buffer
*vb
, *vbufs
= r300
->vertex_buffer
;
141 struct pipe_vertex_element
*velem
= r300
->velems
->velem
;
145 if (index_bias
< 0) {
146 /* See how large index bias we may subtract. We must be careful
147 * here because negative buffer offsets are not allowed
149 max_neg_bias
= INT_MAX
;
150 for (i
= 0; i
< r300
->velems
->count
; i
++) {
151 vb
= &vbufs
[velem
[i
].vertex_buffer_index
];
152 size
= (vb
->buffer_offset
+ velem
[i
].src_offset
) / vb
->stride
;
153 max_neg_bias
= MIN2(max_neg_bias
, size
);
156 /* Now set the minimum allowed value. */
157 *buffer_offset
= MAX2(-max_neg_bias
, index_bias
);
159 /* A positive index bias is OK. */
160 *buffer_offset
= index_bias
;
163 *index_offset
= index_bias
- *buffer_offset
;
166 enum r300_prepare_flags
{
167 PREP_FIRST_DRAW
= (1 << 0), /* call emit_dirty_state and friends? */
168 PREP_VALIDATE_VBOS
= (1 << 1), /* validate VBOs? */
169 PREP_EMIT_AOS
= (1 << 2), /* call emit_aos? */
170 PREP_EMIT_AOS_SWTCL
= (1 << 3), /* call emit_aos_swtcl? */
171 PREP_INDEXED
= (1 << 4) /* is this draw_elements? */
175 * Check if the requested number of dwords is available in the CS and
177 * \param r300 The context.
178 * \param flags See r300_prepare_flags.
179 * \param cs_dwords The number of dwords to reserve in CS.
180 * \return TRUE if the CS was flushed
182 static boolean
r300_reserve_cs_dwords(struct r300_context
*r300
,
183 enum r300_prepare_flags flags
,
186 boolean flushed
= FALSE
;
187 boolean first_draw
= flags
& PREP_FIRST_DRAW
;
188 boolean emit_aos
= flags
& PREP_EMIT_AOS
;
189 boolean emit_aos_swtcl
= flags
& PREP_EMIT_AOS_SWTCL
;
191 /* Add dirty state, index offset, and AOS. */
193 cs_dwords
+= r300_get_num_dirty_dwords(r300
);
195 if (r300
->screen
->caps
.index_bias_supported
)
196 cs_dwords
+= 2; /* emit_index_offset */
199 cs_dwords
+= 55; /* emit_aos */
202 cs_dwords
+= 7; /* emit_aos_swtcl */
205 cs_dwords
+= r300_get_num_cs_end_dwords(r300
);
207 /* Reserve requested CS space. */
208 if (cs_dwords
> (R300_MAX_CMDBUF_DWORDS
- r300
->cs
->cdw
)) {
209 r300
->context
.flush(&r300
->context
, 0, NULL
);
217 * Validate buffers and emit dirty state.
218 * \param r300 The context.
219 * \param flags See r300_prepare_flags.
220 * \param index_buffer The index buffer to validate. The parameter may be NULL.
221 * \param aos_offset The offset passed to emit_aos.
222 * \param index_bias The index bias to emit.
223 * \return TRUE if rendering should be skipped
225 static boolean
r300_emit_states(struct r300_context
*r300
,
226 enum r300_prepare_flags flags
,
227 struct pipe_resource
*index_buffer
,
231 boolean first_draw
= flags
& PREP_FIRST_DRAW
;
232 boolean emit_aos
= flags
& PREP_EMIT_AOS
;
233 boolean emit_aos_swtcl
= flags
& PREP_EMIT_AOS_SWTCL
;
234 boolean indexed
= flags
& PREP_INDEXED
;
235 boolean validate_vbos
= flags
& PREP_VALIDATE_VBOS
;
237 /* Validate buffers and emit dirty state if needed. */
239 /* upload buffers first */
240 if (r300
->screen
->caps
.has_tcl
&& r300
->any_user_vbs
) {
241 r300_upload_user_buffers(r300
);
242 r300
->any_user_vbs
= false;
245 if (r300
->validate_buffers
) {
246 if (!r300_emit_buffer_validate(r300
, validate_vbos
,
248 fprintf(stderr
, "r300: CS space validation failed. "
249 "(not enough memory?) Skipping rendering.\n");
253 /* Consider the validation done only if everything was validated. */
255 r300
->validate_buffers
= FALSE
;
259 r300_emit_dirty_state(r300
);
260 if (r300
->screen
->caps
.index_bias_supported
) {
261 if (r300
->screen
->caps
.has_tcl
)
262 r500_emit_index_bias(r300
, index_bias
);
264 r500_emit_index_bias(r300
, 0);
268 r300_emit_aos(r300
, aos_offset
, indexed
);
271 r300_emit_aos_swtcl(r300
, indexed
);
278 * Check if the requested number of dwords is available in the CS and
279 * if not, flush. Then validate buffers and emit dirty state.
280 * \param r300 The context.
281 * \param flags See r300_prepare_flags.
282 * \param index_buffer The index buffer to validate. The parameter may be NULL.
283 * \param cs_dwords The number of dwords to reserve in CS.
284 * \param aos_offset The offset passed to emit_aos.
285 * \param index_bias The index bias to emit.
286 * \return TRUE if rendering should be skipped
288 static boolean
r300_prepare_for_rendering(struct r300_context
*r300
,
289 enum r300_prepare_flags flags
,
290 struct pipe_resource
*index_buffer
,
295 if (r300_reserve_cs_dwords(r300
, flags
, cs_dwords
))
296 flags
|= PREP_FIRST_DRAW
;
298 return r300_emit_states(r300
, flags
, index_buffer
, aos_offset
, index_bias
);
301 static boolean
immd_is_good_idea(struct r300_context
*r300
,
304 struct pipe_vertex_element
* velem
;
305 struct pipe_vertex_buffer
* vbuf
;
306 boolean checked
[PIPE_MAX_ATTRIBS
] = {0};
307 unsigned vertex_element_count
= r300
->velems
->count
;
310 if (DBG_ON(r300
, DBG_NO_IMMD
)) {
318 if (count
* r300
->velems
->vertex_size_dwords
> IMMD_DWORDS
) {
322 /* We shouldn't map buffers referenced by CS, busy buffers,
323 * and ones placed in VRAM. */
324 for (i
= 0; i
< vertex_element_count
; i
++) {
325 velem
= &r300
->velems
->velem
[i
];
326 vbi
= velem
->vertex_buffer_index
;
329 vbuf
= &r300
->vertex_buffer
[vbi
];
331 if (!(r300_buffer(vbuf
->buffer
)->domain
& R300_DOMAIN_GTT
)) {
335 if (r300_buffer_is_referenced(&r300
->context
,
337 R300_REF_CS
| R300_REF_HW
)) {
338 /* It's a very bad idea to map it... */
347 /*****************************************************************************
348 * The HWTCL draw functions. *
349 ****************************************************************************/
351 static void r300_emit_draw_arrays_immediate(struct r300_context
*r300
,
356 struct pipe_vertex_element
* velem
;
357 struct pipe_vertex_buffer
* vbuf
;
358 unsigned vertex_element_count
= r300
->velems
->count
;
361 /* Size of the vertex, in dwords. */
362 unsigned vertex_size
= r300
->velems
->vertex_size_dwords
;
364 /* The number of dwords for this draw operation. */
365 unsigned dwords
= 9 + count
* vertex_size
;
367 /* Size of the vertex element, in dwords. */
368 unsigned size
[PIPE_MAX_ATTRIBS
];
370 /* Stride to the same attrib in the next vertex in the vertex buffer,
372 unsigned stride
[PIPE_MAX_ATTRIBS
];
374 /* Mapped vertex buffers. */
375 uint32_t* map
[PIPE_MAX_ATTRIBS
];
376 uint32_t* mapelem
[PIPE_MAX_ATTRIBS
];
377 struct pipe_transfer
* transfer
[PIPE_MAX_ATTRIBS
] = {0};
381 if (!r300_prepare_for_rendering(r300
, PREP_FIRST_DRAW
, NULL
, dwords
, 0, 0))
384 /* Calculate the vertex size, offsets, strides etc. and map the buffers. */
385 for (i
= 0; i
< vertex_element_count
; i
++) {
386 velem
= &r300
->velems
->velem
[i
];
387 size
[i
] = r300
->velems
->hw_format_size
[i
] / 4;
388 vbi
= velem
->vertex_buffer_index
;
389 vbuf
= &r300
->vertex_buffer
[vbi
];
390 stride
[i
] = vbuf
->stride
/ 4;
392 /* Map the buffer. */
393 if (!transfer
[vbi
]) {
394 map
[vbi
] = (uint32_t*)pipe_buffer_map(&r300
->context
,
398 map
[vbi
] += (vbuf
->buffer_offset
/ 4) + stride
[i
] * start
;
400 mapelem
[i
] = map
[vbi
] + (velem
->src_offset
/ 4);
404 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
405 r300_provoking_vertex_fixes(r300
, mode
));
406 OUT_CS_REG(R300_VAP_VTX_SIZE
, vertex_size
);
407 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX
, 2);
410 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2
, count
* vertex_size
);
411 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED
| (count
<< 16) |
412 r300_translate_primitive(mode
));
415 for (v
= 0; v
< count
; v
++) {
416 for (i
= 0; i
< vertex_element_count
; i
++) {
417 OUT_CS_TABLE(&mapelem
[i
][stride
[i
] * v
], size
[i
]);
423 for (i
= 0; i
< vertex_element_count
; i
++) {
424 vbi
= r300
->velems
->velem
[i
].vertex_buffer_index
;
427 vbuf
= &r300
->vertex_buffer
[vbi
];
428 pipe_buffer_unmap(&r300
->context
, vbuf
->buffer
, transfer
[vbi
]);
429 transfer
[vbi
] = NULL
;
434 static void r300_emit_draw_arrays(struct r300_context
*r300
,
438 boolean alt_num_verts
= count
> 65535;
441 if (count
>= (1 << 24)) {
442 fprintf(stderr
, "r300: Got a huge number of vertices: %i, "
443 "refusing to render.\n", count
);
447 BEGIN_CS(7 + (alt_num_verts
? 2 : 0));
449 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES
, count
);
451 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
452 r300_provoking_vertex_fixes(r300
, mode
));
453 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX
, 2);
456 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
457 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
458 r300_translate_primitive(mode
) |
459 (alt_num_verts
? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS
: 0));
463 static void r300_emit_draw_elements(struct r300_context
*r300
,
464 struct pipe_resource
* indexBuffer
,
472 uint32_t count_dwords
;
473 uint32_t offset_dwords
= indexSize
* start
/ sizeof(uint32_t);
474 boolean alt_num_verts
= count
> 65535;
477 if (count
>= (1 << 24)) {
478 fprintf(stderr
, "r300: Got a huge number of vertices: %i, "
479 "refusing to render.\n", count
);
483 maxIndex
= MIN2(maxIndex
, r300
->vertex_buffer_max_index
);
485 DBG(r300
, DBG_DRAW
, "r300: Indexbuf of %u indices, min %u max %u\n",
486 count
, minIndex
, maxIndex
);
488 BEGIN_CS(13 + (alt_num_verts
? 2 : 0));
490 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES
, count
);
492 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
493 r300_provoking_vertex_fixes(r300
, mode
));
494 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX
, 2);
497 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, 0);
498 if (indexSize
== 4) {
499 count_dwords
= count
;
500 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
501 R300_VAP_VF_CNTL__INDEX_SIZE_32bit
|
502 r300_translate_primitive(mode
) |
503 (alt_num_verts
? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS
: 0));
505 count_dwords
= (count
+ 1) / 2;
506 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
507 r300_translate_primitive(mode
) |
508 (alt_num_verts
? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS
: 0));
511 /* INDX_BUFFER is a truly special packet3.
512 * Unlike most other packet3, where the offset is after the count,
513 * the order is reversed, so the relocation ends up carrying the
514 * size of the indexbuf instead of the offset.
516 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER
, 2);
517 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR
| (R300_VAP_PORT_IDX0
>> 2) |
518 (0 << R300_INDX_BUFFER_SKIP_SHIFT
));
519 OUT_CS(offset_dwords
<< 2);
520 OUT_CS_BUF_RELOC(indexBuffer
, count_dwords
,
521 r300_buffer(indexBuffer
)->domain
, 0);
526 /* This is the fast-path drawing & emission for HW TCL. */
527 static void r300_draw_range_elements(struct pipe_context
* pipe
,
528 struct pipe_resource
* indexBuffer
,
537 struct r300_context
* r300
= r300_context(pipe
);
538 struct pipe_resource
* orgIndexBuffer
= indexBuffer
;
539 boolean alt_num_verts
= r300
->screen
->caps
.is_r500
&&
541 r300
->rws
->get_value(r300
->rws
, R300_VID_DRM_2_3_0
);
542 unsigned short_count
;
543 int buffer_offset
= 0, index_offset
= 0; /* for index bias emulation */
546 if (indexBias
&& !r300
->screen
->caps
.index_bias_supported
) {
547 r300_split_index_bias(r300
, indexBias
, &buffer_offset
, &index_offset
);
550 r300_translate_index_buffer(r300
, &indexBuffer
, &indexSize
, index_offset
,
553 r300_update_derived_state(r300
);
555 /* Fallback for misaligned ushort indices. */
556 if (indexSize
== 2 && start
% 2 == 1) {
557 struct pipe_transfer
*transfer
;
558 struct pipe_resource
*userbuf
;
559 uint16_t *ptr
= pipe_buffer_map(pipe
, indexBuffer
,
560 PIPE_TRANSFER_READ
, &transfer
);
562 /* Copy the mapped index buffer directly to the upload buffer.
563 * The start index will be aligned simply from the fact that
564 * every sub-buffer in u_upload_mgr is aligned. */
565 userbuf
= pipe
->screen
->user_buffer_create(pipe
->screen
,
566 ptr
+ start
, count
* 2,
567 PIPE_BIND_INDEX_BUFFER
);
568 indexBuffer
= userbuf
;
569 r300_upload_index_buffer(r300
, &indexBuffer
, indexSize
, 0, count
, &new_offset
);
570 pipe_resource_reference(&userbuf
, NULL
);
571 pipe_buffer_unmap(pipe
, indexBuffer
, transfer
);
573 r300_upload_index_buffer(r300
, &indexBuffer
, indexSize
, start
, count
, &new_offset
);
578 /* 15 dwords for emit_draw_elements. Give up if the function fails. */
579 if (!r300_prepare_for_rendering(r300
,
580 PREP_FIRST_DRAW
| PREP_VALIDATE_VBOS
| PREP_EMIT_AOS
|
581 PREP_INDEXED
, indexBuffer
, 15, buffer_offset
, indexBias
))
584 if (alt_num_verts
|| count
<= 65535) {
585 r300_emit_draw_elements(r300
, indexBuffer
, indexSize
,
586 minIndex
, maxIndex
, mode
, start
, count
);
589 short_count
= MIN2(count
, 65534);
590 r300_emit_draw_elements(r300
, indexBuffer
, indexSize
,
592 mode
, start
, short_count
);
594 start
+= short_count
;
595 count
-= short_count
;
597 /* 15 dwords for emit_draw_elements */
599 if (!r300_prepare_for_rendering(r300
,
600 PREP_VALIDATE_VBOS
| PREP_EMIT_AOS
| PREP_INDEXED
,
601 indexBuffer
, 15, buffer_offset
, indexBias
))
608 if (indexBuffer
!= orgIndexBuffer
) {
609 pipe_resource_reference( &indexBuffer
, NULL
);
613 static void r300_draw_arrays(struct pipe_context
* pipe
, unsigned mode
,
614 unsigned start
, unsigned count
)
616 struct r300_context
* r300
= r300_context(pipe
);
617 boolean alt_num_verts
= r300
->screen
->caps
.is_r500
&&
619 r300
->rws
->get_value(r300
->rws
, R300_VID_DRM_2_3_0
);
620 unsigned short_count
;
622 r300_update_derived_state(r300
);
624 if (immd_is_good_idea(r300
, count
)) {
625 r300_emit_draw_arrays_immediate(r300
, mode
, start
, count
);
627 /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
628 if (!r300_prepare_for_rendering(r300
,
629 PREP_FIRST_DRAW
| PREP_VALIDATE_VBOS
| PREP_EMIT_AOS
,
633 if (alt_num_verts
|| count
<= 65535) {
634 r300_emit_draw_arrays(r300
, mode
, count
);
637 short_count
= MIN2(count
, 65535);
638 r300_emit_draw_arrays(r300
, mode
, short_count
);
640 start
+= short_count
;
641 count
-= short_count
;
643 /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
645 if (!r300_prepare_for_rendering(r300
,
646 PREP_VALIDATE_VBOS
| PREP_EMIT_AOS
, NULL
, 9,
655 static void r300_draw_vbo(struct pipe_context
* pipe
,
656 const struct pipe_draw_info
*info
)
658 struct r300_context
* r300
= r300_context(pipe
);
659 unsigned count
= info
->count
;
660 boolean translate
= FALSE
;
661 boolean indexed
= info
->indexed
&& r300
->index_buffer
.buffer
;
662 unsigned start_indexed
= 0;
664 if (r300
->skip_rendering
) {
668 if (!u_trim_pipe_prim(info
->mode
, &count
)) {
672 /* Index buffer range checking. */
674 assert(r300
->index_buffer
.offset
% r300
->index_buffer
.index_size
== 0);
676 /* Compute start for draw_elements, taking the offset into account. */
679 (r300
->index_buffer
.offset
/ r300
->index_buffer
.index_size
);
681 if ((start_indexed
+ count
) * r300
->index_buffer
.index_size
>
682 r300
->index_buffer
.buffer
->width0
) {
683 fprintf(stderr
, "r300: Invalid index buffer range. Skipping rendering.\n");
688 /* Set up fallback for incompatible vertex layout if needed. */
689 if (r300
->incompatible_vb_layout
|| r300
->velems
->incompatible_layout
) {
690 r300_begin_vertex_translate(r300
);
695 r300_draw_range_elements(pipe
,
696 r300
->index_buffer
.buffer
,
697 r300
->index_buffer
.index_size
,
705 r300_draw_arrays(pipe
,
712 r300_end_vertex_translate(r300
);
716 /****************************************************************************
717 * The rest of this file is for SW TCL rendering only. Please be polite and *
718 * keep these functions separated so that they are easier to locate. ~C. *
719 ***************************************************************************/
721 /* SW TCL elements, using Draw. */
722 static void r300_swtcl_draw_vbo(struct pipe_context
* pipe
,
723 const struct pipe_draw_info
*info
)
725 struct r300_context
* r300
= r300_context(pipe
);
726 struct pipe_transfer
*vb_transfer
[PIPE_MAX_ATTRIBS
];
727 struct pipe_transfer
*ib_transfer
= NULL
;
728 unsigned count
= info
->count
;
730 void *indices
= NULL
;
731 boolean indexed
= info
->indexed
&& r300
->index_buffer
.buffer
;
733 if (r300
->skip_rendering
) {
737 if (!u_trim_pipe_prim(info
->mode
, &count
)) {
741 r300_update_derived_state(r300
);
743 r300_reserve_cs_dwords(r300
,
744 PREP_FIRST_DRAW
| PREP_EMIT_AOS_SWTCL
|
745 (indexed
? PREP_INDEXED
: 0),
748 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
749 if (r300
->vertex_buffer
[i
].buffer
) {
750 void *buf
= pipe_buffer_map(pipe
,
751 r300
->vertex_buffer
[i
].buffer
,
754 draw_set_mapped_vertex_buffer(r300
->draw
, i
, buf
);
759 indices
= pipe_buffer_map(pipe
, r300
->index_buffer
.buffer
,
760 PIPE_TRANSFER_READ
, &ib_transfer
);
763 draw_set_mapped_index_buffer(r300
->draw
, indices
);
765 r300
->draw_vbo_locked
= TRUE
;
766 r300
->draw_first_emitted
= FALSE
;
767 draw_vbo(r300
->draw
, info
);
768 draw_flush(r300
->draw
);
769 r300
->draw_vbo_locked
= FALSE
;
771 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
772 if (r300
->vertex_buffer
[i
].buffer
) {
773 pipe_buffer_unmap(pipe
, r300
->vertex_buffer
[i
].buffer
,
775 draw_set_mapped_vertex_buffer(r300
->draw
, i
, NULL
);
780 pipe_buffer_unmap(pipe
, r300
->index_buffer
.buffer
, ib_transfer
);
781 draw_set_mapped_index_buffer(r300
->draw
, NULL
);
785 /* Object for rendering using Draw. */
788 struct vbuf_render base
;
791 struct r300_context
* r300
;
793 /* Vertex information */
802 struct pipe_transfer
*vbo_transfer
;
805 static INLINE
struct r300_render
*
806 r300_render(struct vbuf_render
* render
)
808 return (struct r300_render
*)render
;
811 static const struct vertex_info
*
812 r300_render_get_vertex_info(struct vbuf_render
* render
)
814 struct r300_render
* r300render
= r300_render(render
);
815 struct r300_context
* r300
= r300render
->r300
;
817 return &r300
->vertex_info
;
820 static boolean
r300_render_allocate_vertices(struct vbuf_render
* render
,
824 struct r300_render
* r300render
= r300_render(render
);
825 struct r300_context
* r300
= r300render
->r300
;
826 struct pipe_screen
* screen
= r300
->context
.screen
;
827 size_t size
= (size_t)vertex_size
* (size_t)count
;
829 DBG(r300
, DBG_DRAW
, "r300: render_allocate_vertices (size: %d)\n", size
);
831 if (size
+ r300
->draw_vbo_offset
> r300
->draw_vbo_size
)
833 pipe_resource_reference(&r300
->vbo
, NULL
);
834 r300
->vbo
= pipe_buffer_create(screen
,
835 PIPE_BIND_VERTEX_BUFFER
,
836 R300_MAX_DRAW_VBO_SIZE
);
837 r300
->draw_vbo_offset
= 0;
838 r300
->draw_vbo_size
= R300_MAX_DRAW_VBO_SIZE
;
839 r300
->validate_buffers
= TRUE
;
842 r300render
->vertex_size
= vertex_size
;
844 return (r300
->vbo
) ? TRUE
: FALSE
;
847 static void* r300_render_map_vertices(struct vbuf_render
* render
)
849 struct r300_render
* r300render
= r300_render(render
);
850 struct r300_context
* r300
= r300render
->r300
;
852 assert(!r300render
->vbo_transfer
);
854 DBG(r300
, DBG_DRAW
, "r300: render_map_vertices\n");
856 r300render
->vbo_ptr
= pipe_buffer_map(&r300render
->r300
->context
,
859 &r300render
->vbo_transfer
);
861 assert(r300render
->vbo_ptr
);
863 return ((uint8_t*)r300render
->vbo_ptr
+ r300
->draw_vbo_offset
);
866 static void r300_render_unmap_vertices(struct vbuf_render
* render
,
870 struct r300_render
* r300render
= r300_render(render
);
871 struct pipe_context
* context
= &r300render
->r300
->context
;
872 struct r300_context
* r300
= r300render
->r300
;
874 assert(r300render
->vbo_transfer
);
876 DBG(r300
, DBG_DRAW
, "r300: render_unmap_vertices\n");
878 r300render
->vbo_max_used
= MAX2(r300render
->vbo_max_used
,
879 r300render
->vertex_size
* (max
+ 1));
880 pipe_buffer_unmap(context
, r300
->vbo
, r300render
->vbo_transfer
);
882 r300render
->vbo_transfer
= NULL
;
885 static void r300_render_release_vertices(struct vbuf_render
* render
)
887 struct r300_render
* r300render
= r300_render(render
);
888 struct r300_context
* r300
= r300render
->r300
;
890 DBG(r300
, DBG_DRAW
, "r300: render_release_vertices\n");
892 r300
->draw_vbo_offset
+= r300render
->vbo_max_used
;
893 r300render
->vbo_max_used
= 0;
896 static boolean
r300_render_set_primitive(struct vbuf_render
* render
,
899 struct r300_render
* r300render
= r300_render(render
);
901 r300render
->prim
= prim
;
902 r300render
->hwprim
= r300_translate_primitive(prim
);
907 static void r300_render_draw_arrays(struct vbuf_render
* render
,
911 struct r300_render
* r300render
= r300_render(render
);
912 struct r300_context
* r300
= r300render
->r300
;
918 (void) i
; (void) ptr
;
920 DBG(r300
, DBG_DRAW
, "r300: render_draw_arrays (count: %d)\n", count
);
922 if (r300
->draw_first_emitted
) {
923 if (!r300_prepare_for_rendering(r300
,
924 PREP_FIRST_DRAW
| PREP_EMIT_AOS_SWTCL
,
928 if (!r300_emit_states(r300
,
929 PREP_FIRST_DRAW
| PREP_EMIT_AOS_SWTCL
,
934 /* Uncomment to dump all VBOs rendered through this interface.
936 ptr = pipe_buffer_map(&r300render->r300->context,
937 r300render->vbo, PIPE_TRANSFER_READ,
938 &r300render->vbo_transfer);
940 for (i = 0; i < count; i++) {
941 printf("r300: Vertex %d\n", i);
942 draw_dump_emitted_vertex(&r300->vertex_info, ptr);
943 ptr += r300->vertex_info.size * 4;
947 pipe_buffer_unmap(&r300render->r300->context, r300render->vbo,
948 r300render->vbo_transfer);
952 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
953 r300_provoking_vertex_fixes(r300
, r300render
->prim
));
954 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, count
- 1);
955 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
956 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
960 r300
->draw_first_emitted
= TRUE
;
963 static void r300_render_draw_elements(struct vbuf_render
* render
,
964 const ushort
* indices
,
967 struct r300_render
* r300render
= r300_render(render
);
968 struct r300_context
* r300
= r300render
->r300
;
970 unsigned end_cs_dwords
;
971 unsigned max_index
= (r300
->draw_vbo_size
- r300
->draw_vbo_offset
) /
972 (r300render
->r300
->vertex_info
.size
* 4) - 1;
973 unsigned short_count
;
974 unsigned free_dwords
;
977 DBG(r300
, DBG_DRAW
, "r300: render_draw_elements (count: %d)\n", count
);
979 if (r300
->draw_first_emitted
) {
980 if (!r300_prepare_for_rendering(r300
,
981 PREP_FIRST_DRAW
| PREP_EMIT_AOS_SWTCL
| PREP_INDEXED
,
985 if (!r300_emit_states(r300
,
986 PREP_FIRST_DRAW
| PREP_EMIT_AOS_SWTCL
| PREP_INDEXED
,
991 /* Below we manage the CS space manually because there may be more
992 * indices than it can fit in CS. */
994 end_cs_dwords
= r300_get_num_cs_end_dwords(r300
);
997 free_dwords
= R300_MAX_CMDBUF_DWORDS
- r300
->cs
->cdw
;
999 short_count
= MIN2(count
, (free_dwords
- end_cs_dwords
- 6) * 2);
1001 BEGIN_CS(6 + (short_count
+1)/2);
1002 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
1003 r300_provoking_vertex_fixes(r300
, r300render
->prim
));
1004 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, max_index
);
1005 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, (short_count
+1)/2);
1006 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (short_count
<< 16) |
1007 r300render
->hwprim
);
1008 for (i
= 0; i
< short_count
-1; i
+= 2) {
1009 OUT_CS(indices
[i
+1] << 16 | indices
[i
]);
1011 if (short_count
% 2) {
1012 OUT_CS(indices
[short_count
-1]);
1016 /* OK now subtract the emitted indices and see if we need to emit
1017 * another draw packet. */
1018 indices
+= short_count
;
1019 count
-= short_count
;
1022 if (!r300_prepare_for_rendering(r300
,
1023 PREP_EMIT_AOS_SWTCL
| PREP_INDEXED
,
1027 end_cs_dwords
= r300_get_num_cs_end_dwords(r300
);
1031 r300
->draw_first_emitted
= TRUE
;
1034 static void r300_render_destroy(struct vbuf_render
* render
)
1039 static struct vbuf_render
* r300_render_create(struct r300_context
* r300
)
1041 struct r300_render
* r300render
= CALLOC_STRUCT(r300_render
);
1043 r300render
->r300
= r300
;
1045 /* XXX find real numbers plz */
1046 r300render
->base
.max_vertex_buffer_bytes
= 128 * 1024;
1047 r300render
->base
.max_indices
= 16 * 1024;
1049 r300render
->base
.get_vertex_info
= r300_render_get_vertex_info
;
1050 r300render
->base
.allocate_vertices
= r300_render_allocate_vertices
;
1051 r300render
->base
.map_vertices
= r300_render_map_vertices
;
1052 r300render
->base
.unmap_vertices
= r300_render_unmap_vertices
;
1053 r300render
->base
.set_primitive
= r300_render_set_primitive
;
1054 r300render
->base
.draw_elements
= r300_render_draw_elements
;
1055 r300render
->base
.draw_arrays
= r300_render_draw_arrays
;
1056 r300render
->base
.release_vertices
= r300_render_release_vertices
;
1057 r300render
->base
.destroy
= r300_render_destroy
;
1059 return &r300render
->base
;
1062 struct draw_stage
* r300_draw_stage(struct r300_context
* r300
)
1064 struct vbuf_render
* render
;
1065 struct draw_stage
* stage
;
1067 render
= r300_render_create(r300
);
1073 stage
= draw_vbuf_stage(r300
->draw
, render
);
1076 render
->destroy(render
);
1080 draw_set_render(r300
->draw
, render
);
1085 void r300_draw_flush_vbuf(struct r300_context
*r300
)
1087 pipe_resource_reference(&r300
->vbo
, NULL
);
1088 r300
->draw_vbo_size
= 0;
1091 /****************************************************************************
1092 * End of SW TCL functions *
1093 ***************************************************************************/
1095 /* This functions is used to draw a rectangle for the blitter module.
1097 * If we rendered a quad, the pixels on the main diagonal
1098 * would be computed and stored twice, which makes the clear/copy codepaths
1099 * somewhat inefficient. Instead we use a rectangular point sprite. */
1100 static void r300_blitter_draw_rectangle(struct blitter_context
*blitter
,
1101 unsigned x1
, unsigned y1
,
1102 unsigned x2
, unsigned y2
,
1104 enum blitter_attrib_type type
,
1105 const float attrib
[4])
1107 struct r300_context
*r300
= r300_context(util_blitter_get_pipe(blitter
));
1108 unsigned last_sprite_coord_enable
= r300
->sprite_coord_enable
;
1109 unsigned width
= x2
- x1
;
1110 unsigned height
= y2
- y1
;
1111 unsigned vertex_size
=
1112 type
== UTIL_BLITTER_ATTRIB_COLOR
|| !r300
->draw
? 8 : 4;
1113 unsigned dwords
= 13 + vertex_size
+
1114 (type
== UTIL_BLITTER_ATTRIB_TEXCOORD
? 7 : 0);
1115 const float zeros
[4] = {0, 0, 0, 0};
1118 r300
->context
.set_vertex_buffers(&r300
->context
, 0, NULL
);
1120 if (type
== UTIL_BLITTER_ATTRIB_TEXCOORD
)
1121 r300
->sprite_coord_enable
= 1;
1123 r300_update_derived_state(r300
);
1125 /* Mark some states we don't care about as non-dirty. */
1126 r300
->clip_state
.dirty
= FALSE
;
1127 r300
->viewport_state
.dirty
= FALSE
;
1129 if (!r300_prepare_for_rendering(r300
, PREP_FIRST_DRAW
, NULL
, dwords
, 0, 0))
1132 DBG(r300
, DBG_DRAW
, "r300: draw_rectangle\n");
1136 OUT_CS_REG(R300_GA_POINT_SIZE
, (height
* 6) | ((width
* 6) << 16));
1138 if (type
== UTIL_BLITTER_ATTRIB_TEXCOORD
) {
1139 /* Set up the GA to generate texcoords. */
1140 OUT_CS_REG(R300_GB_ENABLE
, R300_GB_POINT_STUFF_ENABLE
|
1141 (R300_GB_TEX_STR
<< R300_GB_TEX0_SOURCE_SHIFT
));
1142 OUT_CS_REG_SEQ(R300_GA_POINT_S0
, 4);
1143 OUT_CS_32F(attrib
[0]);
1144 OUT_CS_32F(attrib
[3]);
1145 OUT_CS_32F(attrib
[2]);
1146 OUT_CS_32F(attrib
[1]);
1149 /* Set up VAP controls. */
1150 OUT_CS_REG(R300_VAP_CLIP_CNTL
, R300_CLIP_DISABLE
);
1151 OUT_CS_REG(R300_VAP_VTE_CNTL
, R300_VTX_XY_FMT
| R300_VTX_Z_FMT
);
1152 OUT_CS_REG(R300_VAP_VTX_SIZE
, vertex_size
);
1153 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX
, 2);
1158 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2
, vertex_size
);
1159 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED
| (1 << 16) |
1160 R300_VAP_VF_CNTL__PRIM_POINTS
);
1162 OUT_CS_32F(x1
+ width
* 0.5f
);
1163 OUT_CS_32F(y1
+ height
* 0.5f
);
1167 if (vertex_size
== 8) {
1170 OUT_CS_TABLE(attrib
, 4);
1175 /* Restore the state. */
1176 r300_mark_atom_dirty(r300
, &r300
->clip_state
);
1177 r300_mark_atom_dirty(r300
, &r300
->rs_state
);
1178 r300_mark_atom_dirty(r300
, &r300
->viewport_state
);
1180 r300
->sprite_coord_enable
= last_sprite_coord_enable
;
1183 static void r300_resource_resolve(struct pipe_context
* pipe
,
1184 struct pipe_resource
* dest
,
1186 struct pipe_resource
* src
,
1189 struct r300_context
* r300
= r300_context(pipe
);
1190 struct pipe_surface
* srcsurf
, surf_tmpl
;
1191 struct r300_aa_state
*aa
= (struct r300_aa_state
*)r300
->aa_state
.state
;
1192 float color
[] = {0, 0, 0, 0};
1194 memset(&surf_tmpl
, 0, sizeof(surf_tmpl
));
1195 surf_tmpl
.format
= src
->format
;
1196 surf_tmpl
.usage
= 0; /* not really a surface hence no bind flags */
1197 surf_tmpl
.u
.tex
.level
= 0; /* msaa resources cannot have mipmaps */
1198 surf_tmpl
.u
.tex
.first_layer
= src_layer
;
1199 surf_tmpl
.u
.tex
.last_layer
= src_layer
;
1200 srcsurf
= pipe
->create_surface(pipe
, src
, &surf_tmpl
);
1201 surf_tmpl
.format
= dest
->format
;
1202 surf_tmpl
.u
.tex
.first_layer
= dst_layer
;
1203 surf_tmpl
.u
.tex
.last_layer
= dst_layer
;
1205 DBG(r300
, DBG_DRAW
, "r300: Resolving resource...\n");
1207 /* Enable AA resolve. */
1208 aa
->dest
= r300_surface(pipe
->create_surface(pipe
, dest
, &surf_tmpl
));
1211 R300_RB3D_AARESOLVE_CTL_AARESOLVE_MODE_RESOLVE
|
1212 R300_RB3D_AARESOLVE_CTL_AARESOLVE_ALPHA_AVERAGE
;
1213 r300
->aa_state
.size
= 12;
1214 r300_mark_atom_dirty(r300
, &r300
->aa_state
);
1216 /* Resolve the surface. */
1217 r300
->context
.clear_render_target(pipe
,
1218 srcsurf
, color
, 0, 0, src
->width0
, src
->height0
);
1220 /* Disable AA resolve. */
1221 aa
->aaresolve_ctl
= 0;
1222 r300
->aa_state
.size
= 4;
1223 r300_mark_atom_dirty(r300
, &r300
->aa_state
);
1225 pipe_surface_reference((struct pipe_surface
**)&srcsurf
, NULL
);
1226 pipe_surface_reference((struct pipe_surface
**)&aa
->dest
, NULL
);
1229 void r300_init_render_functions(struct r300_context
*r300
)
1231 /* Set draw functions based on presence of HW TCL. */
1232 if (r300
->screen
->caps
.has_tcl
) {
1233 r300
->context
.draw_vbo
= r300_draw_vbo
;
1235 r300
->context
.draw_vbo
= r300_swtcl_draw_vbo
;
1238 r300
->context
.resource_resolve
= r300_resource_resolve
;
1239 r300
->blitter
->draw_rectangle
= r300_blitter_draw_rectangle
;
1241 /* Plug in the two-sided stencil reference value fallback if needed. */
1242 if (!r300
->screen
->caps
.is_r500
)
1243 r300_plug_in_stencil_ref_fallback(r300
);