2 * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
23 /* r300_render: Vertex and index buffer primitive emission. Contains both
24 * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */
26 #include "draw/draw_context.h"
27 #include "draw/draw_vbuf.h"
29 #include "pipe/p_inlines.h"
31 #include "util/u_memory.h"
32 #include "util/u_prim.h"
35 #include "r300_context.h"
36 #include "r300_emit.h"
38 #include "r300_render.h"
39 #include "r300_state_derived.h"
41 /* r300_render: Vertex and index buffer primitive emission. */
42 #define R300_MAX_VBO_SIZE (1024 * 1024)
44 uint32_t r300_translate_primitive(unsigned prim
)
47 case PIPE_PRIM_POINTS
:
48 return R300_VAP_VF_CNTL__PRIM_POINTS
;
50 return R300_VAP_VF_CNTL__PRIM_LINES
;
51 case PIPE_PRIM_LINE_LOOP
:
52 return R300_VAP_VF_CNTL__PRIM_LINE_LOOP
;
53 case PIPE_PRIM_LINE_STRIP
:
54 return R300_VAP_VF_CNTL__PRIM_LINE_STRIP
;
55 case PIPE_PRIM_TRIANGLES
:
56 return R300_VAP_VF_CNTL__PRIM_TRIANGLES
;
57 case PIPE_PRIM_TRIANGLE_STRIP
:
58 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP
;
59 case PIPE_PRIM_TRIANGLE_FAN
:
60 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN
;
62 return R300_VAP_VF_CNTL__PRIM_QUADS
;
63 case PIPE_PRIM_QUAD_STRIP
:
64 return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP
;
65 case PIPE_PRIM_POLYGON
:
66 return R300_VAP_VF_CNTL__PRIM_POLYGON
;
72 static boolean
r300_nothing_to_draw(struct r300_context
*r300
)
74 return ((struct r300_rs_state
*)r300
->rs_state
.state
)->rs
.scissor
&&
75 r300
->scissor_state
->scissor
.empty_area
;
78 static uint32_t r300_provoking_vertex_fixes(struct r300_context
*r300
,
81 struct r300_rs_state
* rs
= (struct r300_rs_state
*)r300
->rs_state
.state
;
82 uint32_t color_control
= rs
->color_control
;
84 /* By default (see r300_state.c:r300_create_rs_state) color_control is
85 * initialized to provoking the first vertex.
87 * Triangle fans must be reduced to the second vertex, not the first, in
88 * Gallium flatshade-first mode, as per the GL spec.
89 * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt)
91 * Quads never provoke correctly in flatshade-first mode. The first
92 * vertex is never considered as provoking, so only the second, third,
93 * and fourth vertices can be selected, and both "third" and "last" modes
94 * select the fourth vertex. This is probably due to D3D lacking quads.
96 * Similarly, polygons reduce to the first, not the last, vertex, when in
97 * "last" mode, and all other modes start from the second vertex.
102 if (rs
->rs
.flatshade_first
) {
104 case PIPE_PRIM_TRIANGLE_FAN
:
105 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND
;
107 case PIPE_PRIM_QUADS
:
108 case PIPE_PRIM_QUAD_STRIP
:
109 case PIPE_PRIM_POLYGON
:
110 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
113 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST
;
117 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
120 return color_control
;
123 static void r300_emit_draw_arrays(struct r300_context
*r300
,
130 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
131 r300_provoking_vertex_fixes(r300
, mode
));
132 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX
, 0);
133 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, count
- 1);
134 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
135 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
136 r300_translate_primitive(mode
));
140 static void r300_emit_draw_elements(struct r300_context
*r300
,
141 struct pipe_buffer
* indexBuffer
,
149 uint32_t count_dwords
;
150 uint32_t offset_dwords
= indexSize
* start
/ sizeof(uint32_t);
153 /* XXX most of these are stupid */
154 assert(indexSize
== 4 || indexSize
== 2);
155 assert((start
* indexSize
) % 4 == 0);
156 assert(offset_dwords
== 0);
159 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
160 r300_provoking_vertex_fixes(r300
, mode
));
161 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX
, minIndex
);
162 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, maxIndex
);
163 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, 0);
164 if (indexSize
== 4) {
165 count_dwords
= count
+ start
;
166 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
167 R300_VAP_VF_CNTL__INDEX_SIZE_32bit
|
168 r300_translate_primitive(mode
));
170 count_dwords
= (count
+ start
+ 1) / 2;
171 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
172 r300_translate_primitive(mode
));
175 /* INDX_BUFFER is a truly special packet3.
176 * Unlike most other packet3, where the offset is after the count,
177 * the order is reversed, so the relocation ends up carrying the
178 * size of the indexbuf instead of the offset.
182 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER
, 2);
183 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR
| (R300_VAP_PORT_IDX0
>> 2) |
184 (0 << R300_INDX_BUFFER_SKIP_SHIFT
));
185 OUT_CS(offset_dwords
);
186 OUT_CS_RELOC(indexBuffer
, count_dwords
,
187 RADEON_GEM_DOMAIN_GTT
, 0, 0);
193 static boolean
r300_setup_vertex_buffers(struct r300_context
*r300
)
195 struct pipe_vertex_buffer
*vbuf
= r300
->vertex_buffer
;
196 struct pipe_vertex_element
*velem
= r300
->vertex_element
;
199 for (int i
= 0; i
< r300
->vertex_element_count
; i
++) {
200 if (!r300
->winsys
->add_buffer(r300
->winsys
,
201 vbuf
[velem
[i
].vertex_buffer_index
].buffer
,
202 RADEON_GEM_DOMAIN_GTT
, 0)) {
203 r300
->context
.flush(&r300
->context
, 0, NULL
);
208 if (!r300
->winsys
->validate(r300
->winsys
)) {
209 r300
->context
.flush(&r300
->context
, 0, NULL
);
210 return r300
->winsys
->validate(r300
->winsys
);
216 /* This is the fast-path drawing & emission for HW TCL. */
217 void r300_draw_range_elements(struct pipe_context
* pipe
,
218 struct pipe_buffer
* indexBuffer
,
226 struct r300_context
* r300
= r300_context(pipe
);
228 if (!u_trim_pipe_prim(mode
, &count
)) {
233 /* XXX: use aux/indices functions to split this into smaller
239 if (r300_nothing_to_draw(r300
)) {
243 r300_update_derived_state(r300
);
245 if (!r300_setup_vertex_buffers(r300
)) {
249 if (!r300
->winsys
->add_buffer(r300
->winsys
, indexBuffer
,
250 RADEON_GEM_DOMAIN_GTT
, 0)) {
254 if (!r300
->winsys
->validate(r300
->winsys
)) {
258 r300_emit_dirty_state(r300
);
260 r300_emit_aos(r300
, 0);
262 r300_emit_draw_elements(r300
, indexBuffer
, indexSize
, minIndex
, maxIndex
,
266 /* Simple helpers for context setup. Should probably be moved to util. */
267 void r300_draw_elements(struct pipe_context
* pipe
,
268 struct pipe_buffer
* indexBuffer
,
269 unsigned indexSize
, unsigned mode
,
270 unsigned start
, unsigned count
)
272 pipe
->draw_range_elements(pipe
, indexBuffer
, indexSize
, 0, ~0,
276 void r300_draw_arrays(struct pipe_context
* pipe
, unsigned mode
,
277 unsigned start
, unsigned count
)
279 struct r300_context
* r300
= r300_context(pipe
);
281 if (!u_trim_pipe_prim(mode
, &count
)) {
286 /* XXX: driver needs to handle this -- use the functions in
287 * aux/indices to split this into several smaller primitives.
292 if (r300_nothing_to_draw(r300
)) {
296 r300_update_derived_state(r300
);
298 if (!r300_setup_vertex_buffers(r300
)) {
302 r300_emit_dirty_state(r300
);
304 r300_emit_aos(r300
, start
);
306 r300_emit_draw_arrays(r300
, mode
, count
);
309 /****************************************************************************
310 * The rest of this file is for SW TCL rendering only. Please be polite and *
311 * keep these functions separated so that they are easier to locate. ~C. *
312 ***************************************************************************/
314 /* SW TCL arrays, using Draw. */
315 void r300_swtcl_draw_arrays(struct pipe_context
* pipe
,
320 struct r300_context
* r300
= r300_context(pipe
);
323 if (!u_trim_pipe_prim(mode
, &count
)) {
327 if (r300_nothing_to_draw(r300
)) {
331 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
332 void* buf
= pipe_buffer_map(pipe
->screen
,
333 r300
->vertex_buffer
[i
].buffer
,
334 PIPE_BUFFER_USAGE_CPU_READ
);
335 draw_set_mapped_vertex_buffer(r300
->draw
, i
, buf
);
338 draw_set_mapped_element_buffer(r300
->draw
, 0, NULL
);
340 draw_set_mapped_constant_buffer(r300
->draw
,
342 r300
->shader_constants
[PIPE_SHADER_VERTEX
].constants
,
343 r300
->shader_constants
[PIPE_SHADER_VERTEX
].count
*
344 (sizeof(float) * 4));
346 draw_arrays(r300
->draw
, mode
, start
, count
);
348 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
349 pipe_buffer_unmap(pipe
->screen
, r300
->vertex_buffer
[i
].buffer
);
350 draw_set_mapped_vertex_buffer(r300
->draw
, i
, NULL
);
354 /* SW TCL elements, using Draw. */
355 void r300_swtcl_draw_range_elements(struct pipe_context
* pipe
,
356 struct pipe_buffer
* indexBuffer
,
364 struct r300_context
* r300
= r300_context(pipe
);
368 if (!u_trim_pipe_prim(mode
, &count
)) {
372 if (r300_nothing_to_draw(r300
)) {
376 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
377 void* buf
= pipe_buffer_map(pipe
->screen
,
378 r300
->vertex_buffer
[i
].buffer
,
379 PIPE_BUFFER_USAGE_CPU_READ
);
380 draw_set_mapped_vertex_buffer(r300
->draw
, i
, buf
);
383 indices
= pipe_buffer_map(pipe
->screen
, indexBuffer
,
384 PIPE_BUFFER_USAGE_CPU_READ
);
385 draw_set_mapped_element_buffer_range(r300
->draw
, indexSize
,
386 minIndex
, maxIndex
, indices
);
388 draw_set_mapped_constant_buffer(r300
->draw
,
390 r300
->shader_constants
[PIPE_SHADER_VERTEX
].constants
,
391 r300
->shader_constants
[PIPE_SHADER_VERTEX
].count
*
392 (sizeof(float) * 4));
394 draw_arrays(r300
->draw
, mode
, start
, count
);
396 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
397 pipe_buffer_unmap(pipe
->screen
, r300
->vertex_buffer
[i
].buffer
);
398 draw_set_mapped_vertex_buffer(r300
->draw
, i
, NULL
);
401 pipe_buffer_unmap(pipe
->screen
, indexBuffer
);
402 draw_set_mapped_element_buffer_range(r300
->draw
, 0, start
,
403 start
+ count
- 1, NULL
);
406 /* Object for rendering using Draw. */
409 struct vbuf_render base
;
412 struct r300_context
* r300
;
414 /* Vertex information */
420 struct pipe_buffer
* vbo
;
427 static INLINE
struct r300_render
*
428 r300_render(struct vbuf_render
* render
)
430 return (struct r300_render
*)render
;
433 static const struct vertex_info
*
434 r300_render_get_vertex_info(struct vbuf_render
* render
)
436 struct r300_render
* r300render
= r300_render(render
);
437 struct r300_context
* r300
= r300render
->r300
;
439 r300_update_derived_state(r300
);
441 return &r300
->vertex_info
->vinfo
;
444 static boolean
r300_render_allocate_vertices(struct vbuf_render
* render
,
448 struct r300_render
* r300render
= r300_render(render
);
449 struct r300_context
* r300
= r300render
->r300
;
450 struct pipe_screen
* screen
= r300
->context
.screen
;
451 size_t size
= (size_t)vertex_size
* (size_t)count
;
453 if (size
+ r300render
->vbo_offset
> r300render
->vbo_size
)
455 pipe_buffer_reference(&r300
->vbo
, NULL
);
456 r300render
->vbo
= pipe_buffer_create(screen
,
458 PIPE_BUFFER_USAGE_VERTEX
,
460 r300render
->vbo_offset
= 0;
461 r300render
->vbo_size
= R300_MAX_VBO_SIZE
;
464 r300render
->vertex_size
= vertex_size
;
465 r300
->vbo
= r300render
->vbo
;
466 r300
->vbo_offset
= r300render
->vbo_offset
;
468 return (r300render
->vbo
) ? TRUE
: FALSE
;
471 static void* r300_render_map_vertices(struct vbuf_render
* render
)
473 struct r300_render
* r300render
= r300_render(render
);
474 struct pipe_screen
* screen
= r300render
->r300
->context
.screen
;
476 r300render
->vbo_ptr
= pipe_buffer_map(screen
, r300render
->vbo
,
477 PIPE_BUFFER_USAGE_CPU_WRITE
);
479 return ((uint8_t*)r300render
->vbo_ptr
+ r300render
->vbo_offset
);
482 static void r300_render_unmap_vertices(struct vbuf_render
* render
,
486 struct r300_render
* r300render
= r300_render(render
);
487 struct pipe_screen
* screen
= r300render
->r300
->context
.screen
;
488 CS_LOCALS(r300render
->r300
);
490 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, max
);
493 r300render
->vbo_max_used
= MAX2(r300render
->vbo_max_used
,
494 r300render
->vertex_size
* (max
+ 1));
495 pipe_buffer_unmap(screen
, r300render
->vbo
);
498 static void r300_render_release_vertices(struct vbuf_render
* render
)
500 struct r300_render
* r300render
= r300_render(render
);
502 r300render
->vbo_offset
+= r300render
->vbo_max_used
;
503 r300render
->vbo_max_used
= 0;
506 static boolean
r300_render_set_primitive(struct vbuf_render
* render
,
509 struct r300_render
* r300render
= r300_render(render
);
511 r300render
->prim
= prim
;
512 r300render
->hwprim
= r300_translate_primitive(prim
);
517 static void r300_render_draw_arrays(struct vbuf_render
* render
,
521 struct r300_render
* r300render
= r300_render(render
);
522 struct r300_context
* r300
= r300render
->r300
;
526 r300_emit_dirty_state(r300
);
528 DBG(r300
, DBG_DRAW
, "r300: Doing vbuf render, count %d\n", count
);
531 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
532 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
537 static void r300_render_draw(struct vbuf_render
* render
,
538 const ushort
* indices
,
541 struct r300_render
* r300render
= r300_render(render
);
542 struct r300_context
* r300
= r300render
->r300
;
547 r300_emit_dirty_state(r300
);
549 BEGIN_CS(2 + (count
+1)/2);
550 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, (count
+1)/2);
551 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
553 for (i
= 0; i
< count
-1; i
+= 2) {
554 OUT_CS(indices
[i
+1] << 16 | indices
[i
]);
557 OUT_CS(indices
[count
-1]);
562 static void r300_render_destroy(struct vbuf_render
* render
)
567 static struct vbuf_render
* r300_render_create(struct r300_context
* r300
)
569 struct r300_render
* r300render
= CALLOC_STRUCT(r300_render
);
571 r300render
->r300
= r300
;
573 /* XXX find real numbers plz */
574 r300render
->base
.max_vertex_buffer_bytes
= 128 * 1024;
575 r300render
->base
.max_indices
= 16 * 1024;
577 r300render
->base
.get_vertex_info
= r300_render_get_vertex_info
;
578 r300render
->base
.allocate_vertices
= r300_render_allocate_vertices
;
579 r300render
->base
.map_vertices
= r300_render_map_vertices
;
580 r300render
->base
.unmap_vertices
= r300_render_unmap_vertices
;
581 r300render
->base
.set_primitive
= r300_render_set_primitive
;
582 r300render
->base
.draw
= r300_render_draw
;
583 r300render
->base
.draw_arrays
= r300_render_draw_arrays
;
584 r300render
->base
.release_vertices
= r300_render_release_vertices
;
585 r300render
->base
.destroy
= r300_render_destroy
;
587 r300render
->vbo
= NULL
;
588 r300render
->vbo_size
= 0;
589 r300render
->vbo_offset
= 0;
591 return &r300render
->base
;
594 struct draw_stage
* r300_draw_stage(struct r300_context
* r300
)
596 struct vbuf_render
* render
;
597 struct draw_stage
* stage
;
599 render
= r300_render_create(r300
);
605 stage
= draw_vbuf_stage(r300
->draw
, render
);
608 render
->destroy(render
);
612 draw_set_render(r300
->draw
, render
);