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"
45 #define IMMD_DWORDS 32
47 static uint32_t r300_translate_primitive(unsigned prim
)
49 static const int prim_conv
[] = {
50 R300_VAP_VF_CNTL__PRIM_POINTS
,
51 R300_VAP_VF_CNTL__PRIM_LINES
,
52 R300_VAP_VF_CNTL__PRIM_LINE_LOOP
,
53 R300_VAP_VF_CNTL__PRIM_LINE_STRIP
,
54 R300_VAP_VF_CNTL__PRIM_TRIANGLES
,
55 R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP
,
56 R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN
,
57 R300_VAP_VF_CNTL__PRIM_QUADS
,
58 R300_VAP_VF_CNTL__PRIM_QUAD_STRIP
,
59 R300_VAP_VF_CNTL__PRIM_POLYGON
,
65 unsigned hwprim
= prim_conv
[prim
];
71 static uint32_t r300_provoking_vertex_fixes(struct r300_context
*r300
,
74 struct r300_rs_state
* rs
= (struct r300_rs_state
*)r300
->rs_state
.state
;
75 uint32_t color_control
= rs
->color_control
;
77 /* By default (see r300_state.c:r300_create_rs_state) color_control is
78 * initialized to provoking the first vertex.
80 * Triangle fans must be reduced to the second vertex, not the first, in
81 * Gallium flatshade-first mode, as per the GL spec.
82 * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt)
84 * Quads never provoke correctly in flatshade-first mode. The first
85 * vertex is never considered as provoking, so only the second, third,
86 * and fourth vertices can be selected, and both "third" and "last" modes
87 * select the fourth vertex. This is probably due to D3D lacking quads.
89 * Similarly, polygons reduce to the first, not the last, vertex, when in
90 * "last" mode, and all other modes start from the second vertex.
95 if (rs
->rs
.flatshade_first
) {
97 case PIPE_PRIM_TRIANGLE_FAN
:
98 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND
;
100 case PIPE_PRIM_QUADS
:
101 case PIPE_PRIM_QUAD_STRIP
:
102 case PIPE_PRIM_POLYGON
:
103 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
106 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST
;
110 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
113 return color_control
;
116 void r500_emit_index_bias(struct r300_context
*r300
, int index_bias
)
121 OUT_CS_REG(R500_VAP_INDEX_OFFSET
,
122 (index_bias
& 0xFFFFFF) | (index_bias
< 0 ? 1<<24 : 0));
126 static void r300_emit_draw_init(struct r300_context
*r300
, unsigned mode
,
131 assert(max_index
< (1 << 24));
134 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
135 r300_provoking_vertex_fixes(r300
, mode
));
136 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX
, 2);
142 /* This function splits the index bias value into two parts:
143 * - buffer_offset: the value that can be safely added to buffer offsets
144 * in r300_emit_vertex_arrays (it must yield a positive offset when added to
145 * a vertex buffer offset)
146 * - index_offset: the value that must be manually subtracted from indices
147 * in an index buffer to achieve negative offsets. */
148 static void r300_split_index_bias(struct r300_context
*r300
, int index_bias
,
149 int *buffer_offset
, int *index_offset
)
151 struct pipe_vertex_buffer
*vb
, *vbufs
= r300
->vertex_buffer
;
152 struct pipe_vertex_element
*velem
= r300
->velems
->velem
;
156 if (index_bias
< 0) {
157 /* See how large index bias we may subtract. We must be careful
158 * here because negative buffer offsets are not allowed
160 max_neg_bias
= INT_MAX
;
161 for (i
= 0; i
< r300
->velems
->count
; i
++) {
162 vb
= &vbufs
[velem
[i
].vertex_buffer_index
];
163 size
= (vb
->buffer_offset
+ velem
[i
].src_offset
) / vb
->stride
;
164 max_neg_bias
= MIN2(max_neg_bias
, size
);
167 /* Now set the minimum allowed value. */
168 *buffer_offset
= MAX2(-max_neg_bias
, index_bias
);
170 /* A positive index bias is OK. */
171 *buffer_offset
= index_bias
;
174 *index_offset
= index_bias
- *buffer_offset
;
177 enum r300_prepare_flags
{
178 PREP_EMIT_STATES
= (1 << 0), /* call emit_dirty_state and friends? */
179 PREP_VALIDATE_VBOS
= (1 << 1), /* validate VBOs? */
180 PREP_EMIT_VARRAYS
= (1 << 2), /* call emit_vertex_arrays? */
181 PREP_EMIT_VARRAYS_SWTCL
= (1 << 3), /* call emit_vertex_arrays_swtcl? */
182 PREP_INDEXED
= (1 << 4) /* is this draw_elements? */
186 * Check if the requested number of dwords is available in the CS and
188 * \param r300 The context.
189 * \param flags See r300_prepare_flags.
190 * \param cs_dwords The number of dwords to reserve in CS.
191 * \return TRUE if the CS was flushed
193 static boolean
r300_reserve_cs_dwords(struct r300_context
*r300
,
194 enum r300_prepare_flags flags
,
197 boolean flushed
= FALSE
;
198 boolean emit_states
= flags
& PREP_EMIT_STATES
;
199 boolean emit_vertex_arrays
= flags
& PREP_EMIT_VARRAYS
;
200 boolean emit_vertex_arrays_swtcl
= flags
& PREP_EMIT_VARRAYS_SWTCL
;
202 /* Add dirty state, index offset, and AOS. */
204 cs_dwords
+= r300_get_num_dirty_dwords(r300
);
206 if (r300
->screen
->caps
.is_r500
)
207 cs_dwords
+= 2; /* emit_index_offset */
209 if (emit_vertex_arrays
)
210 cs_dwords
+= 55; /* emit_vertex_arrays */
212 if (emit_vertex_arrays_swtcl
)
213 cs_dwords
+= 7; /* emit_vertex_arrays_swtcl */
215 cs_dwords
+= r300_get_num_cs_end_dwords(r300
);
217 /* Reserve requested CS space. */
218 if (cs_dwords
> (RADEON_MAX_CMDBUF_DWORDS
- r300
->cs
->cdw
)) {
219 r300_flush(&r300
->context
, RADEON_FLUSH_ASYNC
, NULL
);
227 * Validate buffers and emit dirty state.
228 * \param r300 The context.
229 * \param flags See r300_prepare_flags.
230 * \param index_buffer The index buffer to validate. The parameter may be NULL.
231 * \param buffer_offset The offset passed to emit_vertex_arrays.
232 * \param index_bias The index bias to emit.
233 * \param instance_id Index of instance to render
234 * \return TRUE if rendering should be skipped
236 static boolean
r300_emit_states(struct r300_context
*r300
,
237 enum r300_prepare_flags flags
,
238 struct pipe_resource
*index_buffer
,
240 int index_bias
, int instance_id
)
242 boolean emit_states
= flags
& PREP_EMIT_STATES
;
243 boolean emit_vertex_arrays
= flags
& PREP_EMIT_VARRAYS
;
244 boolean emit_vertex_arrays_swtcl
= flags
& PREP_EMIT_VARRAYS_SWTCL
;
245 boolean indexed
= flags
& PREP_INDEXED
;
246 boolean validate_vbos
= flags
& PREP_VALIDATE_VBOS
;
248 /* Validate buffers and emit dirty state if needed. */
249 if (emit_states
|| (emit_vertex_arrays
&& validate_vbos
)) {
250 if (!r300_emit_buffer_validate(r300
, validate_vbos
,
252 fprintf(stderr
, "r300: CS space validation failed. "
253 "(not enough memory?) Skipping rendering.\n");
259 r300_emit_dirty_state(r300
);
261 if (r300
->screen
->caps
.is_r500
) {
262 if (r300
->screen
->caps
.has_tcl
)
263 r500_emit_index_bias(r300
, index_bias
);
265 r500_emit_index_bias(r300
, 0);
268 if (emit_vertex_arrays
&&
269 (r300
->vertex_arrays_dirty
||
270 r300
->vertex_arrays_indexed
!= indexed
||
271 r300
->vertex_arrays_offset
!= buffer_offset
||
272 r300
->vertex_arrays_instance_id
!= instance_id
)) {
273 r300_emit_vertex_arrays(r300
, buffer_offset
, indexed
, instance_id
);
275 r300
->vertex_arrays_dirty
= FALSE
;
276 r300
->vertex_arrays_indexed
= indexed
;
277 r300
->vertex_arrays_offset
= buffer_offset
;
278 r300
->vertex_arrays_instance_id
= instance_id
;
281 if (emit_vertex_arrays_swtcl
)
282 r300_emit_vertex_arrays_swtcl(r300
, indexed
);
288 * Check if the requested number of dwords is available in the CS and
289 * if not, flush. Then validate buffers and emit dirty state.
290 * \param r300 The context.
291 * \param flags See r300_prepare_flags.
292 * \param index_buffer The index buffer to validate. The parameter may be NULL.
293 * \param cs_dwords The number of dwords to reserve in CS.
294 * \param buffer_offset The offset passed to emit_vertex_arrays.
295 * \param index_bias The index bias to emit.
296 * \param instance_id The instance to render.
297 * \return TRUE if rendering should be skipped
299 static boolean
r300_prepare_for_rendering(struct r300_context
*r300
,
300 enum r300_prepare_flags flags
,
301 struct pipe_resource
*index_buffer
,
307 /* Make sure there is enough space in the command stream and emit states. */
308 if (r300_reserve_cs_dwords(r300
, flags
, cs_dwords
))
309 flags
|= PREP_EMIT_STATES
;
311 return r300_emit_states(r300
, flags
, index_buffer
, buffer_offset
,
312 index_bias
, instance_id
);
315 static boolean
immd_is_good_idea(struct r300_context
*r300
,
318 if (DBG_ON(r300
, DBG_NO_IMMD
)) {
322 if (count
* r300
->velems
->vertex_size_dwords
> IMMD_DWORDS
) {
326 /* Buffers can only be used for read by r300 (except query buffers, but
327 * those can't be bound by a state tracker as vertex buffers). */
331 /*****************************************************************************
332 * The HWTCL draw functions. *
333 ****************************************************************************/
335 static void r300_draw_arrays_immediate(struct r300_context
*r300
,
336 const struct pipe_draw_info
*info
)
338 struct pipe_vertex_element
* velem
;
339 struct pipe_vertex_buffer
* vbuf
;
340 unsigned vertex_element_count
= r300
->velems
->count
;
343 /* Size of the vertex, in dwords. */
344 unsigned vertex_size
= r300
->velems
->vertex_size_dwords
;
346 /* The number of dwords for this draw operation. */
347 unsigned dwords
= 4 + info
->count
* vertex_size
;
349 /* Size of the vertex element, in dwords. */
350 unsigned size
[PIPE_MAX_ATTRIBS
];
352 /* Stride to the same attrib in the next vertex in the vertex buffer,
354 unsigned stride
[PIPE_MAX_ATTRIBS
];
356 /* Mapped vertex buffers. */
357 uint32_t* map
[PIPE_MAX_ATTRIBS
] = {0};
358 uint32_t* mapelem
[PIPE_MAX_ATTRIBS
];
362 if (!r300_prepare_for_rendering(r300
, PREP_EMIT_STATES
, NULL
, dwords
, 0, 0, -1))
365 /* Calculate the vertex size, offsets, strides etc. and map the buffers. */
366 for (i
= 0; i
< vertex_element_count
; i
++) {
367 velem
= &r300
->velems
->velem
[i
];
368 size
[i
] = r300
->velems
->format_size
[i
] / 4;
369 vbi
= velem
->vertex_buffer_index
;
370 vbuf
= &r300
->vertex_buffer
[vbi
];
371 stride
[i
] = vbuf
->stride
/ 4;
373 /* Map the buffer. */
375 map
[vbi
] = (uint32_t*)r300
->rws
->buffer_map(
376 r300_resource(vbuf
->buffer
)->cs_buf
,
377 r300
->cs
, PIPE_TRANSFER_READ
| PIPE_TRANSFER_UNSYNCHRONIZED
);
378 map
[vbi
] += (vbuf
->buffer_offset
/ 4) + stride
[i
] * info
->start
;
380 mapelem
[i
] = map
[vbi
] + (velem
->src_offset
/ 4);
383 r300_emit_draw_init(r300
, info
->mode
, info
->count
-1);
386 OUT_CS_REG(R300_VAP_VTX_SIZE
, vertex_size
);
387 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2
, info
->count
* vertex_size
);
388 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED
| (info
->count
<< 16) |
389 r300_translate_primitive(info
->mode
));
392 for (v
= 0; v
< info
->count
; v
++) {
393 for (i
= 0; i
< vertex_element_count
; i
++) {
394 OUT_CS_TABLE(&mapelem
[i
][stride
[i
] * v
], size
[i
]);
400 static void r300_emit_draw_arrays(struct r300_context
*r300
,
404 boolean alt_num_verts
= count
> 65535;
407 if (count
>= (1 << 24)) {
408 fprintf(stderr
, "r300: Got a huge number of vertices: %i, "
409 "refusing to render.\n", count
);
413 r300_emit_draw_init(r300
, mode
, count
-1);
415 BEGIN_CS(2 + (alt_num_verts
? 2 : 0));
417 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES
, count
);
419 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
420 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
421 r300_translate_primitive(mode
) |
422 (alt_num_verts
? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS
: 0));
426 static void r300_emit_draw_elements(struct r300_context
*r300
,
427 struct pipe_resource
* indexBuffer
,
433 uint16_t *imm_indices3
)
435 uint32_t count_dwords
, offset_dwords
;
436 boolean alt_num_verts
= count
> 65535;
439 if (count
>= (1 << 24)) {
440 fprintf(stderr
, "r300: Got a huge number of vertices: %i, "
441 "refusing to render (max_index: %i).\n", count
, max_index
);
445 DBG(r300
, DBG_DRAW
, "r300: Indexbuf of %u indices, max %u\n",
448 r300_emit_draw_init(r300
, mode
, max_index
);
450 /* If start is odd, render the first triangle with indices embedded
451 * in the command stream. This will increase start by 3 and make it
452 * even. We can then proceed without a fallback. */
453 if (indexSize
== 2 && (start
& 1) &&
454 mode
== PIPE_PRIM_TRIANGLES
) {
456 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, 2);
457 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (3 << 16) |
458 R300_VAP_VF_CNTL__PRIM_TRIANGLES
);
459 OUT_CS(imm_indices3
[1] << 16 | imm_indices3
[0]);
460 OUT_CS(imm_indices3
[2]);
469 offset_dwords
= indexSize
* start
/ sizeof(uint32_t);
471 BEGIN_CS(8 + (alt_num_verts
? 2 : 0));
473 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES
, count
);
475 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, 0);
476 if (indexSize
== 4) {
477 count_dwords
= count
;
478 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
479 R300_VAP_VF_CNTL__INDEX_SIZE_32bit
|
480 r300_translate_primitive(mode
) |
481 (alt_num_verts
? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS
: 0));
483 count_dwords
= (count
+ 1) / 2;
484 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
485 r300_translate_primitive(mode
) |
486 (alt_num_verts
? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS
: 0));
489 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER
, 2);
490 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR
| (R300_VAP_PORT_IDX0
>> 2) |
491 (0 << R300_INDX_BUFFER_SKIP_SHIFT
));
492 OUT_CS(offset_dwords
<< 2);
493 OUT_CS(count_dwords
);
494 OUT_CS_RELOC(r300_resource(indexBuffer
));
498 static void r300_draw_elements_immediate(struct r300_context
*r300
,
499 const struct pipe_draw_info
*info
)
502 const uint16_t *ptr2
;
503 const uint32_t *ptr4
;
504 unsigned index_size
= r300
->index_buffer
.index_size
;
505 unsigned i
, count_dwords
= index_size
== 4 ? info
->count
:
506 (info
->count
+ 1) / 2;
509 /* 19 dwords for r300_draw_elements_immediate. Give up if the function fails. */
510 if (!r300_prepare_for_rendering(r300
,
511 PREP_EMIT_STATES
| PREP_VALIDATE_VBOS
| PREP_EMIT_VARRAYS
|
512 PREP_INDEXED
, NULL
, 2+count_dwords
, 0, info
->index_bias
, -1))
515 r300_emit_draw_init(r300
, info
->mode
, info
->max_index
);
517 BEGIN_CS(2 + count_dwords
);
518 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, count_dwords
);
520 switch (index_size
) {
522 ptr1
= (uint8_t*)r300
->index_buffer
.user_buffer
;
525 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (info
->count
<< 16) |
526 r300_translate_primitive(info
->mode
));
528 if (info
->index_bias
&& !r300
->screen
->caps
.is_r500
) {
529 for (i
= 0; i
< info
->count
-1; i
+= 2)
530 OUT_CS(((ptr1
[i
+1] + info
->index_bias
) << 16) |
531 (ptr1
[i
] + info
->index_bias
));
534 OUT_CS(ptr1
[i
] + info
->index_bias
);
536 for (i
= 0; i
< info
->count
-1; i
+= 2)
537 OUT_CS(((ptr1
[i
+1]) << 16) |
546 ptr2
= (uint16_t*)r300
->index_buffer
.user_buffer
;
549 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (info
->count
<< 16) |
550 r300_translate_primitive(info
->mode
));
552 if (info
->index_bias
&& !r300
->screen
->caps
.is_r500
) {
553 for (i
= 0; i
< info
->count
-1; i
+= 2)
554 OUT_CS(((ptr2
[i
+1] + info
->index_bias
) << 16) |
555 (ptr2
[i
] + info
->index_bias
));
558 OUT_CS(ptr2
[i
] + info
->index_bias
);
560 OUT_CS_TABLE(ptr2
, count_dwords
);
565 ptr4
= (uint32_t*)r300
->index_buffer
.user_buffer
;
568 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (info
->count
<< 16) |
569 R300_VAP_VF_CNTL__INDEX_SIZE_32bit
|
570 r300_translate_primitive(info
->mode
));
572 if (info
->index_bias
&& !r300
->screen
->caps
.is_r500
) {
573 for (i
= 0; i
< info
->count
; i
++)
574 OUT_CS(ptr4
[i
] + info
->index_bias
);
576 OUT_CS_TABLE(ptr4
, count_dwords
);
583 static void r300_draw_elements(struct r300_context
*r300
,
584 const struct pipe_draw_info
*info
,
587 struct pipe_resource
*indexBuffer
= r300
->index_buffer
.buffer
;
588 unsigned indexSize
= r300
->index_buffer
.index_size
;
589 struct pipe_resource
* orgIndexBuffer
= indexBuffer
;
590 unsigned start
= info
->start
;
591 unsigned count
= info
->count
;
592 boolean alt_num_verts
= r300
->screen
->caps
.is_r500
&&
594 unsigned short_count
;
595 int buffer_offset
= 0, index_offset
= 0; /* for index bias emulation */
596 uint16_t indices3
[3];
598 if (info
->index_bias
&& !r300
->screen
->caps
.is_r500
) {
599 r300_split_index_bias(r300
, info
->index_bias
, &buffer_offset
,
603 r300_translate_index_buffer(r300
, &r300
->index_buffer
, &indexBuffer
,
604 &indexSize
, index_offset
, &start
, count
);
606 /* Fallback for misaligned ushort indices. */
607 if (indexSize
== 2 && (start
& 1) && indexBuffer
) {
608 /* If we got here, then orgIndexBuffer == indexBuffer. */
609 uint16_t *ptr
= r300
->rws
->buffer_map(r300_resource(orgIndexBuffer
)->cs_buf
,
612 PIPE_TRANSFER_UNSYNCHRONIZED
);
614 if (info
->mode
== PIPE_PRIM_TRIANGLES
) {
615 memcpy(indices3
, ptr
+ start
, 6);
617 /* Copy the mapped index buffer directly to the upload buffer.
618 * The start index will be aligned simply from the fact that
619 * every sub-buffer in the upload buffer is aligned. */
620 r300_upload_index_buffer(r300
, &indexBuffer
, indexSize
, &start
,
621 count
, (uint8_t*)ptr
);
624 if (r300
->index_buffer
.user_buffer
)
625 r300_upload_index_buffer(r300
, &indexBuffer
, indexSize
,
627 r300
->index_buffer
.user_buffer
);
630 /* 19 dwords for emit_draw_elements. Give up if the function fails. */
631 if (!r300_prepare_for_rendering(r300
,
632 PREP_EMIT_STATES
| PREP_VALIDATE_VBOS
| PREP_EMIT_VARRAYS
|
633 PREP_INDEXED
, indexBuffer
, 19, buffer_offset
, info
->index_bias
,
637 if (alt_num_verts
|| count
<= 65535) {
638 r300_emit_draw_elements(r300
, indexBuffer
, indexSize
,
639 info
->max_index
, info
->mode
, start
, count
,
643 /* The maximum must be divisible by 4 and 3,
644 * so that quad and triangle lists are split correctly.
646 * Strips, loops, and fans won't work. */
647 short_count
= MIN2(count
, 65532);
649 r300_emit_draw_elements(r300
, indexBuffer
, indexSize
,
651 info
->mode
, start
, short_count
, indices3
);
653 start
+= short_count
;
654 count
-= short_count
;
656 /* 15 dwords for emit_draw_elements */
658 if (!r300_prepare_for_rendering(r300
,
659 PREP_VALIDATE_VBOS
| PREP_EMIT_VARRAYS
| PREP_INDEXED
,
660 indexBuffer
, 19, buffer_offset
, info
->index_bias
,
668 if (indexBuffer
!= orgIndexBuffer
) {
669 pipe_resource_reference( &indexBuffer
, NULL
);
673 static void r300_draw_arrays(struct r300_context
*r300
,
674 const struct pipe_draw_info
*info
,
677 boolean alt_num_verts
= r300
->screen
->caps
.is_r500
&&
679 unsigned start
= info
->start
;
680 unsigned count
= info
->count
;
681 unsigned short_count
;
683 /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
684 if (!r300_prepare_for_rendering(r300
,
685 PREP_EMIT_STATES
| PREP_VALIDATE_VBOS
| PREP_EMIT_VARRAYS
,
686 NULL
, 9, start
, 0, instance_id
))
689 if (alt_num_verts
|| count
<= 65535) {
690 r300_emit_draw_arrays(r300
, info
->mode
, count
);
693 /* The maximum must be divisible by 4 and 3,
694 * so that quad and triangle lists are split correctly.
696 * Strips, loops, and fans won't work. */
697 short_count
= MIN2(count
, 65532);
698 r300_emit_draw_arrays(r300
, info
->mode
, short_count
);
700 start
+= short_count
;
701 count
-= short_count
;
703 /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
705 if (!r300_prepare_for_rendering(r300
,
706 PREP_VALIDATE_VBOS
| PREP_EMIT_VARRAYS
, NULL
, 9,
707 start
, 0, instance_id
))
714 static void r300_draw_arrays_instanced(struct r300_context
*r300
,
715 const struct pipe_draw_info
*info
)
719 for (i
= 0; i
< info
->instance_count
; i
++)
720 r300_draw_arrays(r300
, info
, i
);
723 static void r300_draw_elements_instanced(struct r300_context
*r300
,
724 const struct pipe_draw_info
*info
)
728 for (i
= 0; i
< info
->instance_count
; i
++)
729 r300_draw_elements(r300
, info
, i
);
732 static unsigned r300_max_vertex_count(struct r300_context
*r300
)
734 unsigned i
, nr
= r300
->velems
->count
;
735 struct pipe_vertex_element
*velems
= r300
->velems
->velem
;
736 unsigned result
= ~0;
738 for (i
= 0; i
< nr
; i
++) {
739 struct pipe_vertex_buffer
*vb
=
740 &r300
->vertex_buffer
[velems
[i
].vertex_buffer_index
];
741 unsigned size
, max_count
, value
;
743 /* We're not interested in constant and per-instance attribs. */
746 velems
[i
].instance_divisor
) {
750 size
= vb
->buffer
->width0
;
752 /* Subtract buffer_offset. */
753 value
= vb
->buffer_offset
;
759 /* Subtract src_offset. */
760 value
= velems
[i
].src_offset
;
766 /* Subtract format_size. */
767 value
= r300
->velems
->format_size
[i
];
773 /* Compute the max count. */
774 max_count
= 1 + size
/ vb
->stride
;
775 result
= MIN2(result
, max_count
);
781 static void r300_draw_vbo(struct pipe_context
* pipe
,
782 const struct pipe_draw_info
*dinfo
)
784 struct r300_context
* r300
= r300_context(pipe
);
785 struct pipe_draw_info info
= *dinfo
;
787 if (r300
->skip_rendering
||
788 !u_trim_pipe_prim(info
.mode
, &info
.count
)) {
792 r300_update_derived_state(r300
);
796 unsigned max_count
= r300_max_vertex_count(r300
);
799 fprintf(stderr
, "r300: Skipping a draw command. There is a buffer "
800 " which is too small to be used for rendering.\n");
804 if (max_count
== ~0) {
805 /* There are no per-vertex vertex elements. Use the hardware maximum. */
806 max_count
= 0xffffff;
809 info
.max_index
= max_count
- 1;
810 info
.start
+= r300
->index_buffer
.offset
/ r300
->index_buffer
.index_size
;
812 if (info
.instance_count
<= 1) {
813 if (info
.count
<= 8 &&
814 r300
->index_buffer
.user_buffer
) {
815 r300_draw_elements_immediate(r300
, &info
);
817 r300_draw_elements(r300
, &info
, -1);
820 r300_draw_elements_instanced(r300
, &info
);
823 if (info
.instance_count
<= 1) {
824 if (immd_is_good_idea(r300
, info
.count
)) {
825 r300_draw_arrays_immediate(r300
, &info
);
827 r300_draw_arrays(r300
, &info
, -1);
830 r300_draw_arrays_instanced(r300
, &info
);
835 /****************************************************************************
836 * The rest of this file is for SW TCL rendering only. Please be polite and *
837 * keep these functions separated so that they are easier to locate. ~C. *
838 ***************************************************************************/
840 /* SW TCL elements, using Draw. */
841 static void r300_swtcl_draw_vbo(struct pipe_context
* pipe
,
842 const struct pipe_draw_info
*info
)
844 struct r300_context
* r300
= r300_context(pipe
);
846 if (r300
->skip_rendering
) {
850 r300_update_derived_state(r300
);
852 draw_vbo(r300
->draw
, info
);
853 draw_flush(r300
->draw
);
856 /* Object for rendering using Draw. */
859 struct vbuf_render base
;
862 struct r300_context
* r300
;
864 /* Vertex information */
874 static INLINE
struct r300_render
*
875 r300_render(struct vbuf_render
* render
)
877 return (struct r300_render
*)render
;
880 static const struct vertex_info
*
881 r300_render_get_vertex_info(struct vbuf_render
* render
)
883 struct r300_render
* r300render
= r300_render(render
);
884 struct r300_context
* r300
= r300render
->r300
;
886 return &r300
->vertex_info
;
889 static boolean
r300_render_allocate_vertices(struct vbuf_render
* render
,
893 struct r300_render
* r300render
= r300_render(render
);
894 struct r300_context
* r300
= r300render
->r300
;
895 struct radeon_winsys
*rws
= r300
->rws
;
896 size_t size
= (size_t)vertex_size
* (size_t)count
;
898 DBG(r300
, DBG_DRAW
, "r300: render_allocate_vertices (size: %d)\n", size
);
900 if (!r300
->vbo
|| size
+ r300
->draw_vbo_offset
> r300
->vbo
->size
) {
901 pb_reference(&r300
->vbo
, NULL
);
903 r300render
->vbo_ptr
= NULL
;
905 r300
->vbo
= rws
->buffer_create(rws
,
906 MAX2(R300_MAX_DRAW_VBO_SIZE
, size
),
907 R300_BUFFER_ALIGNMENT
, TRUE
,
908 RADEON_DOMAIN_GTT
, 0);
912 r300
->vbo_cs
= rws
->buffer_get_cs_handle(r300
->vbo
);
913 r300
->draw_vbo_offset
= 0;
914 r300render
->vbo_ptr
= rws
->buffer_map(r300
->vbo_cs
, r300
->cs
,
915 PIPE_TRANSFER_WRITE
);
918 r300render
->vertex_size
= vertex_size
;
922 static void* r300_render_map_vertices(struct vbuf_render
* render
)
924 struct r300_render
* r300render
= r300_render(render
);
925 struct r300_context
* r300
= r300render
->r300
;
927 DBG(r300
, DBG_DRAW
, "r300: render_map_vertices\n");
929 assert(r300render
->vbo_ptr
);
930 return r300render
->vbo_ptr
+ r300
->draw_vbo_offset
;
933 static void r300_render_unmap_vertices(struct vbuf_render
* render
,
937 struct r300_render
* r300render
= r300_render(render
);
938 struct r300_context
* r300
= r300render
->r300
;
940 DBG(r300
, DBG_DRAW
, "r300: render_unmap_vertices\n");
942 r300render
->vbo_max_used
= MAX2(r300render
->vbo_max_used
,
943 r300render
->vertex_size
* (max
+ 1));
946 static void r300_render_release_vertices(struct vbuf_render
* render
)
948 struct r300_render
* r300render
= r300_render(render
);
949 struct r300_context
* r300
= r300render
->r300
;
951 DBG(r300
, DBG_DRAW
, "r300: render_release_vertices\n");
953 r300
->draw_vbo_offset
+= r300render
->vbo_max_used
;
954 r300render
->vbo_max_used
= 0;
957 static void r300_render_set_primitive(struct vbuf_render
* render
,
960 struct r300_render
* r300render
= r300_render(render
);
962 r300render
->prim
= prim
;
963 r300render
->hwprim
= r300_translate_primitive(prim
);
966 static void r300_render_draw_arrays(struct vbuf_render
* render
,
970 struct r300_render
* r300render
= r300_render(render
);
971 struct r300_context
* r300
= r300render
->r300
;
977 (void) i
; (void) ptr
;
980 assert(count
< (1 << 16));
982 DBG(r300
, DBG_DRAW
, "r300: render_draw_arrays (count: %d)\n", count
);
984 if (!r300_prepare_for_rendering(r300
,
985 PREP_EMIT_STATES
| PREP_EMIT_VARRAYS_SWTCL
,
986 NULL
, dwords
, 0, 0, -1)) {
991 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
992 r300_provoking_vertex_fixes(r300
, r300render
->prim
));
993 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, count
- 1);
994 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
995 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
1000 static void r300_render_draw_elements(struct vbuf_render
* render
,
1001 const ushort
* indices
,
1004 struct r300_render
* r300render
= r300_render(render
);
1005 struct r300_context
* r300
= r300render
->r300
;
1006 unsigned max_index
= (r300
->vbo
->size
- r300
->draw_vbo_offset
) /
1007 (r300render
->r300
->vertex_info
.size
* 4) - 1;
1008 struct pipe_resource
*index_buffer
= NULL
;
1009 unsigned index_buffer_offset
;
1012 DBG(r300
, DBG_DRAW
, "r300: render_draw_elements (count: %d)\n", count
);
1014 u_upload_data(r300
->uploader
, 0, count
* 2, indices
,
1015 &index_buffer_offset
, &index_buffer
);
1016 if (!index_buffer
) {
1020 if (!r300_prepare_for_rendering(r300
,
1022 PREP_EMIT_VARRAYS_SWTCL
| PREP_INDEXED
,
1023 index_buffer
, 12, 0, 0, -1)) {
1024 pipe_resource_reference(&index_buffer
, NULL
);
1029 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
1030 r300_provoking_vertex_fixes(r300
, r300render
->prim
));
1031 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, max_index
);
1033 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, 0);
1034 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
1035 r300render
->hwprim
);
1037 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER
, 2);
1038 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR
| (R300_VAP_PORT_IDX0
>> 2));
1039 OUT_CS(index_buffer_offset
);
1040 OUT_CS((count
+ 1) / 2);
1041 OUT_CS_RELOC(r300_resource(index_buffer
));
1044 pipe_resource_reference(&index_buffer
, NULL
);
1047 static void r300_render_destroy(struct vbuf_render
* render
)
1052 static struct vbuf_render
* r300_render_create(struct r300_context
* r300
)
1054 struct r300_render
* r300render
= CALLOC_STRUCT(r300_render
);
1056 r300render
->r300
= r300
;
1058 r300render
->base
.max_vertex_buffer_bytes
= R300_MAX_DRAW_VBO_SIZE
;
1059 r300render
->base
.max_indices
= 16 * 1024;
1061 r300render
->base
.get_vertex_info
= r300_render_get_vertex_info
;
1062 r300render
->base
.allocate_vertices
= r300_render_allocate_vertices
;
1063 r300render
->base
.map_vertices
= r300_render_map_vertices
;
1064 r300render
->base
.unmap_vertices
= r300_render_unmap_vertices
;
1065 r300render
->base
.set_primitive
= r300_render_set_primitive
;
1066 r300render
->base
.draw_elements
= r300_render_draw_elements
;
1067 r300render
->base
.draw_arrays
= r300_render_draw_arrays
;
1068 r300render
->base
.release_vertices
= r300_render_release_vertices
;
1069 r300render
->base
.destroy
= r300_render_destroy
;
1071 return &r300render
->base
;
1074 struct draw_stage
* r300_draw_stage(struct r300_context
* r300
)
1076 struct vbuf_render
* render
;
1077 struct draw_stage
* stage
;
1079 render
= r300_render_create(r300
);
1085 stage
= draw_vbuf_stage(r300
->draw
, render
);
1088 render
->destroy(render
);
1092 draw_set_render(r300
->draw
, render
);
1097 /****************************************************************************
1098 * End of SW TCL functions *
1099 ***************************************************************************/
1101 /* This functions is used to draw a rectangle for the blitter module.
1103 * If we rendered a quad, the pixels on the main diagonal
1104 * would be computed and stored twice, which makes the clear/copy codepaths
1105 * somewhat inefficient. Instead we use a rectangular point sprite. */
1106 void r300_blitter_draw_rectangle(struct blitter_context
*blitter
,
1107 int x1
, int y1
, int x2
, int y2
,
1109 enum blitter_attrib_type type
,
1110 const union pipe_color_union
*attrib
)
1112 struct r300_context
*r300
= r300_context(util_blitter_get_pipe(blitter
));
1113 unsigned last_sprite_coord_enable
= r300
->sprite_coord_enable
;
1114 unsigned width
= x2
- x1
;
1115 unsigned height
= y2
- y1
;
1116 unsigned vertex_size
=
1117 type
== UTIL_BLITTER_ATTRIB_COLOR
|| !r300
->draw
? 8 : 4;
1118 unsigned dwords
= 13 + vertex_size
+
1119 (type
== UTIL_BLITTER_ATTRIB_TEXCOORD
? 7 : 0);
1120 static const union pipe_color_union zeros
;
1123 /* XXX workaround for a lockup in MSAA resolve on SWTCL chipsets, this
1124 * function most probably doesn't handle type=NONE correctly */
1125 if (!r300
->screen
->caps
.has_tcl
&& type
== UTIL_BLITTER_ATTRIB_NONE
) {
1126 util_blitter_draw_rectangle(blitter
, x1
, y1
, x2
, y2
, depth
, type
, attrib
);
1130 if (r300
->skip_rendering
)
1133 if (type
== UTIL_BLITTER_ATTRIB_TEXCOORD
)
1134 r300
->sprite_coord_enable
= 1;
1136 r300_update_derived_state(r300
);
1138 /* Mark some states we don't care about as non-dirty. */
1139 r300
->viewport_state
.dirty
= FALSE
;
1141 if (!r300_prepare_for_rendering(r300
, PREP_EMIT_STATES
, NULL
, dwords
, 0, 0, -1))
1144 DBG(r300
, DBG_DRAW
, "r300: draw_rectangle\n");
1148 OUT_CS_REG(R300_GA_POINT_SIZE
, (height
* 6) | ((width
* 6) << 16));
1150 if (type
== UTIL_BLITTER_ATTRIB_TEXCOORD
) {
1151 /* Set up the GA to generate texcoords. */
1152 OUT_CS_REG(R300_GB_ENABLE
, R300_GB_POINT_STUFF_ENABLE
|
1153 (R300_GB_TEX_STR
<< R300_GB_TEX0_SOURCE_SHIFT
));
1154 OUT_CS_REG_SEQ(R300_GA_POINT_S0
, 4);
1155 OUT_CS_32F(attrib
->f
[0]);
1156 OUT_CS_32F(attrib
->f
[3]);
1157 OUT_CS_32F(attrib
->f
[2]);
1158 OUT_CS_32F(attrib
->f
[1]);
1161 /* Set up VAP controls. */
1162 OUT_CS_REG(R300_VAP_CLIP_CNTL
, R300_CLIP_DISABLE
);
1163 OUT_CS_REG(R300_VAP_VTE_CNTL
, R300_VTX_XY_FMT
| R300_VTX_Z_FMT
);
1164 OUT_CS_REG(R300_VAP_VTX_SIZE
, vertex_size
);
1165 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX
, 2);
1170 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2
, vertex_size
);
1171 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED
| (1 << 16) |
1172 R300_VAP_VF_CNTL__PRIM_POINTS
);
1174 OUT_CS_32F(x1
+ width
* 0.5f
);
1175 OUT_CS_32F(y1
+ height
* 0.5f
);
1179 if (vertex_size
== 8) {
1182 OUT_CS_TABLE(attrib
->f
, 4);
1187 /* Restore the state. */
1188 r300_mark_atom_dirty(r300
, &r300
->rs_state
);
1189 r300_mark_atom_dirty(r300
, &r300
->viewport_state
);
1191 r300
->sprite_coord_enable
= last_sprite_coord_enable
;
1194 void r300_init_render_functions(struct r300_context
*r300
)
1196 /* Set draw functions based on presence of HW TCL. */
1197 if (r300
->screen
->caps
.has_tcl
) {
1198 r300
->context
.draw_vbo
= r300_draw_vbo
;
1200 r300
->context
.draw_vbo
= r300_swtcl_draw_vbo
;
1203 /* Plug in the two-sided stencil reference value fallback if needed. */
1204 if (!r300
->screen
->caps
.is_r500
)
1205 r300_plug_in_stencil_ref_fallback(r300
);