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 r300
->rs_state
->rs
.scissor
&&
75 r300
->scissor_state
->scissor
.empty_area
;
78 static uint32_t r300_provoking_vertex_fixes(struct r300_context
*r300
,
81 uint32_t color_control
= r300
->rs_state
->color_control
;
83 /* By default (see r300_state.c:r300_create_rs_state) color_control is
84 * initialized to provoking the first vertex.
86 * Triangle fans must be reduced to the second vertex, not the first, in
87 * Gallium flatshade-first mode, as per the GL spec.
88 * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt)
90 * Quads never provoke correctly in flatshade-first mode. The first
91 * vertex is never considered as provoking, so only the second, third,
92 * and fourth vertices can be selected, and both "third" and "last" modes
93 * select the fourth vertex. This is probably due to D3D lacking quads.
95 * Similarly, polygons reduce to the first, not the last, vertex, when in
96 * "last" mode, and all other modes start from the second vertex.
101 if (r300
->rs_state
->rs
.flatshade_first
) {
103 case PIPE_PRIM_TRIANGLE_FAN
:
104 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND
;
106 case PIPE_PRIM_QUADS
:
107 case PIPE_PRIM_QUAD_STRIP
:
108 case PIPE_PRIM_POLYGON
:
109 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
112 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST
;
116 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
119 return color_control
;
122 static void r300_emit_draw_arrays(struct r300_context
*r300
,
129 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
130 r300_provoking_vertex_fixes(r300
, mode
));
131 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX
, 0);
132 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, count
- 1);
133 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
134 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
135 r300_translate_primitive(mode
));
139 static void r300_emit_draw_elements(struct r300_context
*r300
,
140 struct pipe_buffer
* indexBuffer
,
148 uint32_t count_dwords
;
149 uint32_t offset_dwords
= indexSize
* start
/ sizeof(uint32_t);
152 /* XXX most of these are stupid */
153 assert(indexSize
== 4 || indexSize
== 2);
154 assert((start
* indexSize
) % 4 == 0);
155 assert(offset_dwords
== 0);
158 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
159 r300_provoking_vertex_fixes(r300
, mode
));
160 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX
, minIndex
);
161 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, maxIndex
);
162 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, 0);
163 if (indexSize
== 4) {
164 count_dwords
= count
+ start
;
165 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
166 R300_VAP_VF_CNTL__INDEX_SIZE_32bit
|
167 r300_translate_primitive(mode
));
169 count_dwords
= (count
+ start
+ 1) / 2;
170 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
171 r300_translate_primitive(mode
));
174 /* INDX_BUFFER is a truly special packet3.
175 * Unlike most other packet3, where the offset is after the count,
176 * the order is reversed, so the relocation ends up carrying the
177 * size of the indexbuf instead of the offset.
181 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER
, 2);
182 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR
| (R300_VAP_PORT_IDX0
>> 2) |
183 (0 << R300_INDX_BUFFER_SKIP_SHIFT
));
184 OUT_CS(offset_dwords
);
185 OUT_CS_RELOC(indexBuffer
, count_dwords
,
186 RADEON_GEM_DOMAIN_GTT
, 0, 0);
192 static boolean
r300_setup_vertex_buffers(struct r300_context
*r300
)
194 struct pipe_vertex_buffer
*vbuf
= r300
->vertex_buffer
;
195 struct pipe_vertex_element
*velem
= r300
->vertex_element
;
198 for (int i
= 0; i
< r300
->vertex_element_count
; i
++) {
199 if (!r300
->winsys
->add_buffer(r300
->winsys
,
200 vbuf
[velem
[i
].vertex_buffer_index
].buffer
,
201 RADEON_GEM_DOMAIN_GTT
, 0)) {
202 r300
->context
.flush(&r300
->context
, 0, NULL
);
207 if (!r300
->winsys
->validate(r300
->winsys
)) {
208 r300
->context
.flush(&r300
->context
, 0, NULL
);
209 return r300
->winsys
->validate(r300
->winsys
);
215 /* This is the fast-path drawing & emission for HW TCL. */
216 boolean
r300_draw_range_elements(struct pipe_context
* pipe
,
217 struct pipe_buffer
* indexBuffer
,
225 struct r300_context
* r300
= r300_context(pipe
);
227 if (!u_trim_pipe_prim(mode
, &count
)) {
235 if (r300_nothing_to_draw(r300
)) {
239 r300_update_derived_state(r300
);
241 if (!r300_setup_vertex_buffers(r300
)) {
245 if (!r300
->winsys
->add_buffer(r300
->winsys
, indexBuffer
,
246 RADEON_GEM_DOMAIN_GTT
, 0)) {
250 if (!r300
->winsys
->validate(r300
->winsys
)) {
254 r300_emit_dirty_state(r300
);
256 r300_emit_aos(r300
, 0);
258 r300_emit_draw_elements(r300
, indexBuffer
, indexSize
, minIndex
, maxIndex
,
264 /* Simple helpers for context setup. Should probably be moved to util. */
265 boolean
r300_draw_elements(struct pipe_context
* pipe
,
266 struct pipe_buffer
* indexBuffer
,
267 unsigned indexSize
, unsigned mode
,
268 unsigned start
, unsigned count
)
270 return pipe
->draw_range_elements(pipe
, indexBuffer
, indexSize
, 0, ~0,
274 boolean
r300_draw_arrays(struct pipe_context
* pipe
, unsigned mode
,
275 unsigned start
, unsigned count
)
277 struct r300_context
* r300
= r300_context(pipe
);
279 if (!u_trim_pipe_prim(mode
, &count
)) {
287 if (r300_nothing_to_draw(r300
)) {
291 r300_update_derived_state(r300
);
293 if (!r300_setup_vertex_buffers(r300
)) {
297 r300_emit_dirty_state(r300
);
299 r300_emit_aos(r300
, start
);
301 r300_emit_draw_arrays(r300
, mode
, count
);
306 /****************************************************************************
307 * The rest of this file is for SW TCL rendering only. Please be polite and *
308 * keep these functions separated so that they are easier to locate. ~C. *
309 ***************************************************************************/
311 /* SW TCL arrays, using Draw. */
312 boolean
r300_swtcl_draw_arrays(struct pipe_context
* pipe
,
317 struct r300_context
* r300
= r300_context(pipe
);
320 if (!u_trim_pipe_prim(mode
, &count
)) {
324 if (r300_nothing_to_draw(r300
)) {
328 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
329 void* buf
= pipe_buffer_map(pipe
->screen
,
330 r300
->vertex_buffer
[i
].buffer
,
331 PIPE_BUFFER_USAGE_CPU_READ
);
332 draw_set_mapped_vertex_buffer(r300
->draw
, i
, buf
);
335 draw_set_mapped_element_buffer(r300
->draw
, 0, NULL
);
337 draw_set_mapped_constant_buffer(r300
->draw
,
338 r300
->shader_constants
[PIPE_SHADER_VERTEX
].constants
,
339 r300
->shader_constants
[PIPE_SHADER_VERTEX
].count
*
340 (sizeof(float) * 4));
342 draw_arrays(r300
->draw
, mode
, start
, count
);
344 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
345 pipe_buffer_unmap(pipe
->screen
, r300
->vertex_buffer
[i
].buffer
);
346 draw_set_mapped_vertex_buffer(r300
->draw
, i
, NULL
);
352 /* SW TCL elements, using Draw. */
353 boolean
r300_swtcl_draw_range_elements(struct pipe_context
* pipe
,
354 struct pipe_buffer
* indexBuffer
,
362 struct r300_context
* r300
= r300_context(pipe
);
365 if (!u_trim_pipe_prim(mode
, &count
)) {
369 if (r300_nothing_to_draw(r300
)) {
373 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
374 void* buf
= pipe_buffer_map(pipe
->screen
,
375 r300
->vertex_buffer
[i
].buffer
,
376 PIPE_BUFFER_USAGE_CPU_READ
);
377 draw_set_mapped_vertex_buffer(r300
->draw
, i
, buf
);
380 void* indices
= pipe_buffer_map(pipe
->screen
, indexBuffer
,
381 PIPE_BUFFER_USAGE_CPU_READ
);
382 draw_set_mapped_element_buffer_range(r300
->draw
, indexSize
,
383 minIndex
, maxIndex
, indices
);
385 draw_set_mapped_constant_buffer(r300
->draw
,
386 r300
->shader_constants
[PIPE_SHADER_VERTEX
].constants
,
387 r300
->shader_constants
[PIPE_SHADER_VERTEX
].count
*
388 (sizeof(float) * 4));
390 draw_arrays(r300
->draw
, mode
, start
, count
);
392 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
393 pipe_buffer_unmap(pipe
->screen
, r300
->vertex_buffer
[i
].buffer
);
394 draw_set_mapped_vertex_buffer(r300
->draw
, i
, NULL
);
397 pipe_buffer_unmap(pipe
->screen
, indexBuffer
);
398 draw_set_mapped_element_buffer_range(r300
->draw
, 0, start
,
399 start
+ count
- 1, NULL
);
404 /* Object for rendering using Draw. */
407 struct vbuf_render base
;
410 struct r300_context
* r300
;
412 /* Vertex information */
418 struct pipe_buffer
* vbo
;
425 static INLINE
struct r300_render
*
426 r300_render(struct vbuf_render
* render
)
428 return (struct r300_render
*)render
;
431 static const struct vertex_info
*
432 r300_render_get_vertex_info(struct vbuf_render
* render
)
434 struct r300_render
* r300render
= r300_render(render
);
435 struct r300_context
* r300
= r300render
->r300
;
437 r300_update_derived_state(r300
);
439 return &r300
->vertex_info
->vinfo
;
442 static boolean
r300_render_allocate_vertices(struct vbuf_render
* render
,
446 struct r300_render
* r300render
= r300_render(render
);
447 struct r300_context
* r300
= r300render
->r300
;
448 struct pipe_screen
* screen
= r300
->context
.screen
;
449 size_t size
= (size_t)vertex_size
* (size_t)count
;
451 if (size
+ r300render
->vbo_offset
> r300render
->vbo_size
)
453 pipe_buffer_reference(&r300
->vbo
, NULL
);
454 r300render
->vbo
= pipe_buffer_create(screen
,
456 PIPE_BUFFER_USAGE_VERTEX
,
458 r300render
->vbo_offset
= 0;
459 r300render
->vbo_size
= R300_MAX_VBO_SIZE
;
462 r300render
->vertex_size
= vertex_size
;
463 r300
->vbo
= r300render
->vbo
;
464 r300
->vbo_offset
= r300render
->vbo_offset
;
466 return (r300render
->vbo
) ? TRUE
: FALSE
;
469 static void* r300_render_map_vertices(struct vbuf_render
* render
)
471 struct r300_render
* r300render
= r300_render(render
);
472 struct pipe_screen
* screen
= r300render
->r300
->context
.screen
;
474 r300render
->vbo_ptr
= pipe_buffer_map(screen
, r300render
->vbo
,
475 PIPE_BUFFER_USAGE_CPU_WRITE
);
477 return (r300render
->vbo_ptr
+ r300render
->vbo_offset
);
480 static void r300_render_unmap_vertices(struct vbuf_render
* render
,
484 struct r300_render
* r300render
= r300_render(render
);
485 struct pipe_screen
* screen
= r300render
->r300
->context
.screen
;
486 CS_LOCALS(r300render
->r300
);
488 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, max
);
491 r300render
->vbo_max_used
= MAX2(r300render
->vbo_max_used
,
492 r300render
->vertex_size
* (max
+ 1));
493 pipe_buffer_unmap(screen
, r300render
->vbo
);
496 static void r300_render_release_vertices(struct vbuf_render
* render
)
498 struct r300_render
* r300render
= r300_render(render
);
500 r300render
->vbo_offset
+= r300render
->vbo_max_used
;
501 r300render
->vbo_max_used
= 0;
504 static boolean
r300_render_set_primitive(struct vbuf_render
* render
,
507 struct r300_render
* r300render
= r300_render(render
);
509 r300render
->prim
= prim
;
510 r300render
->hwprim
= r300_translate_primitive(prim
);
515 static void r300_render_draw_arrays(struct vbuf_render
* render
,
519 struct r300_render
* r300render
= r300_render(render
);
520 struct r300_context
* r300
= r300render
->r300
;
524 r300_emit_dirty_state(r300
);
526 DBG(r300
, DBG_DRAW
, "r300: Doing vbuf render, count %d\n", count
);
529 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
530 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
535 static void r300_render_draw(struct vbuf_render
* render
,
536 const ushort
* indices
,
539 struct r300_render
* r300render
= r300_render(render
);
540 struct r300_context
* r300
= r300render
->r300
;
545 r300_emit_dirty_state(r300
);
547 BEGIN_CS(2 + (count
+1)/2);
548 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, (count
+1)/2);
549 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
551 for (i
= 0; i
< count
-1; i
+= 2) {
552 OUT_CS(indices
[i
+1] << 16 | indices
[i
]);
555 OUT_CS(indices
[count
-1]);
560 static void r300_render_destroy(struct vbuf_render
* render
)
565 static struct vbuf_render
* r300_render_create(struct r300_context
* r300
)
567 struct r300_render
* r300render
= CALLOC_STRUCT(r300_render
);
569 r300render
->r300
= r300
;
571 /* XXX find real numbers plz */
572 r300render
->base
.max_vertex_buffer_bytes
= 128 * 1024;
573 r300render
->base
.max_indices
= 16 * 1024;
575 r300render
->base
.get_vertex_info
= r300_render_get_vertex_info
;
576 r300render
->base
.allocate_vertices
= r300_render_allocate_vertices
;
577 r300render
->base
.map_vertices
= r300_render_map_vertices
;
578 r300render
->base
.unmap_vertices
= r300_render_unmap_vertices
;
579 r300render
->base
.set_primitive
= r300_render_set_primitive
;
580 r300render
->base
.draw
= r300_render_draw
;
581 r300render
->base
.draw_arrays
= r300_render_draw_arrays
;
582 r300render
->base
.release_vertices
= r300_render_release_vertices
;
583 r300render
->base
.destroy
= r300_render_destroy
;
585 r300render
->vbo
= NULL
;
586 r300render
->vbo_size
= 0;
587 r300render
->vbo_offset
= 0;
589 return &r300render
->base
;
592 struct draw_stage
* r300_draw_stage(struct r300_context
* r300
)
594 struct vbuf_render
* render
;
595 struct draw_stage
* stage
;
597 render
= r300_render_create(r300
);
603 stage
= draw_vbuf_stage(r300
->draw
, render
);
606 render
->destroy(render
);
610 draw_set_render(r300
->draw
, render
);