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 uint32_t r300_provoking_vertex_fixes(struct r300_context
*r300
,
75 struct r300_rs_state
* rs
= (struct r300_rs_state
*)r300
->rs_state
.state
;
76 uint32_t color_control
= rs
->color_control
;
78 /* By default (see r300_state.c:r300_create_rs_state) color_control is
79 * initialized to provoking the first vertex.
81 * Triangle fans must be reduced to the second vertex, not the first, in
82 * Gallium flatshade-first mode, as per the GL spec.
83 * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt)
85 * Quads never provoke correctly in flatshade-first mode. The first
86 * vertex is never considered as provoking, so only the second, third,
87 * and fourth vertices can be selected, and both "third" and "last" modes
88 * select the fourth vertex. This is probably due to D3D lacking quads.
90 * Similarly, polygons reduce to the first, not the last, vertex, when in
91 * "last" mode, and all other modes start from the second vertex.
96 if (rs
->rs
.flatshade_first
) {
98 case PIPE_PRIM_TRIANGLE_FAN
:
99 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND
;
101 case PIPE_PRIM_QUADS
:
102 case PIPE_PRIM_QUAD_STRIP
:
103 case PIPE_PRIM_POLYGON
:
104 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
107 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST
;
111 color_control
|= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST
;
114 return color_control
;
117 static void r300_emit_draw_arrays(struct r300_context
*r300
,
124 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
125 r300_provoking_vertex_fixes(r300
, mode
));
126 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX
, 0);
127 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, count
- 1);
128 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
129 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
130 r300_translate_primitive(mode
));
134 static void r300_emit_draw_elements(struct r300_context
*r300
,
135 struct pipe_buffer
* indexBuffer
,
143 uint32_t count_dwords
;
144 uint32_t offset_dwords
= indexSize
* start
/ sizeof(uint32_t);
147 /* XXX most of these are stupid */
148 assert(indexSize
== 4 || indexSize
== 2);
149 assert((start
* indexSize
) % 4 == 0);
150 assert(offset_dwords
== 0);
153 OUT_CS_REG(R300_GA_COLOR_CONTROL
,
154 r300_provoking_vertex_fixes(r300
, mode
));
155 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX
, minIndex
);
156 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, maxIndex
);
157 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, 0);
158 if (indexSize
== 4) {
159 count_dwords
= count
+ start
;
160 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
161 R300_VAP_VF_CNTL__INDEX_SIZE_32bit
|
162 r300_translate_primitive(mode
));
164 count_dwords
= (count
+ start
+ 1) / 2;
165 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
166 r300_translate_primitive(mode
));
169 /* INDX_BUFFER is a truly special packet3.
170 * Unlike most other packet3, where the offset is after the count,
171 * the order is reversed, so the relocation ends up carrying the
172 * size of the indexbuf instead of the offset.
176 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER
, 2);
177 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR
| (R300_VAP_PORT_IDX0
>> 2) |
178 (0 << R300_INDX_BUFFER_SKIP_SHIFT
));
179 OUT_CS(offset_dwords
);
180 OUT_CS_RELOC(indexBuffer
, count_dwords
,
181 RADEON_GEM_DOMAIN_GTT
, 0, 0);
187 static boolean
r300_setup_vertex_buffers(struct r300_context
*r300
)
189 struct pipe_vertex_buffer
*vbuf
= r300
->vertex_buffer
;
190 struct pipe_vertex_element
*velem
= r300
->vertex_element
;
193 for (int i
= 0; i
< r300
->vertex_element_count
; i
++) {
194 if (!r300
->winsys
->add_buffer(r300
->winsys
,
195 vbuf
[velem
[i
].vertex_buffer_index
].buffer
,
196 RADEON_GEM_DOMAIN_GTT
, 0)) {
197 r300
->context
.flush(&r300
->context
, 0, NULL
);
202 if (!r300
->winsys
->validate(r300
->winsys
)) {
203 r300
->context
.flush(&r300
->context
, 0, NULL
);
204 return r300
->winsys
->validate(r300
->winsys
);
210 /* This is the fast-path drawing & emission for HW TCL. */
211 void r300_draw_range_elements(struct pipe_context
* pipe
,
212 struct pipe_buffer
* indexBuffer
,
220 struct r300_context
* r300
= r300_context(pipe
);
222 if (!u_trim_pipe_prim(mode
, &count
)) {
227 /* XXX: use aux/indices functions to split this into smaller
233 r300_update_derived_state(r300
);
235 if (!r300_setup_vertex_buffers(r300
)) {
239 if (!r300
->winsys
->add_buffer(r300
->winsys
, indexBuffer
,
240 RADEON_GEM_DOMAIN_GTT
, 0)) {
244 if (!r300
->winsys
->validate(r300
->winsys
)) {
248 r300_emit_dirty_state(r300
);
250 r300_emit_aos(r300
, 0);
252 r300_emit_draw_elements(r300
, indexBuffer
, indexSize
, minIndex
, maxIndex
,
256 /* Simple helpers for context setup. Should probably be moved to util. */
257 void r300_draw_elements(struct pipe_context
* pipe
,
258 struct pipe_buffer
* indexBuffer
,
259 unsigned indexSize
, unsigned mode
,
260 unsigned start
, unsigned count
)
262 pipe
->draw_range_elements(pipe
, indexBuffer
, indexSize
, 0, ~0,
266 void r300_draw_arrays(struct pipe_context
* pipe
, unsigned mode
,
267 unsigned start
, unsigned count
)
269 struct r300_context
* r300
= r300_context(pipe
);
271 if (!u_trim_pipe_prim(mode
, &count
)) {
276 /* XXX: driver needs to handle this -- use the functions in
277 * aux/indices to split this into several smaller primitives.
282 r300_update_derived_state(r300
);
284 if (!r300_setup_vertex_buffers(r300
)) {
288 r300_emit_dirty_state(r300
);
290 r300_emit_aos(r300
, start
);
292 r300_emit_draw_arrays(r300
, mode
, count
);
295 /****************************************************************************
296 * The rest of this file is for SW TCL rendering only. Please be polite and *
297 * keep these functions separated so that they are easier to locate. ~C. *
298 ***************************************************************************/
300 /* SW TCL arrays, using Draw. */
301 void r300_swtcl_draw_arrays(struct pipe_context
* pipe
,
306 struct r300_context
* r300
= r300_context(pipe
);
309 if (!u_trim_pipe_prim(mode
, &count
)) {
313 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
314 void* buf
= pipe_buffer_map(pipe
->screen
,
315 r300
->vertex_buffer
[i
].buffer
,
316 PIPE_BUFFER_USAGE_CPU_READ
);
317 draw_set_mapped_vertex_buffer(r300
->draw
, i
, buf
);
320 draw_set_mapped_element_buffer(r300
->draw
, 0, NULL
);
322 draw_set_mapped_constant_buffer(r300
->draw
,
324 r300
->shader_constants
[PIPE_SHADER_VERTEX
].constants
,
325 r300
->shader_constants
[PIPE_SHADER_VERTEX
].count
*
326 (sizeof(float) * 4));
328 draw_arrays(r300
->draw
, mode
, start
, count
);
330 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
331 pipe_buffer_unmap(pipe
->screen
, r300
->vertex_buffer
[i
].buffer
);
332 draw_set_mapped_vertex_buffer(r300
->draw
, i
, NULL
);
336 /* SW TCL elements, using Draw. */
337 void r300_swtcl_draw_range_elements(struct pipe_context
* pipe
,
338 struct pipe_buffer
* indexBuffer
,
346 struct r300_context
* r300
= r300_context(pipe
);
350 if (!u_trim_pipe_prim(mode
, &count
)) {
354 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
355 void* buf
= pipe_buffer_map(pipe
->screen
,
356 r300
->vertex_buffer
[i
].buffer
,
357 PIPE_BUFFER_USAGE_CPU_READ
);
358 draw_set_mapped_vertex_buffer(r300
->draw
, i
, buf
);
361 indices
= pipe_buffer_map(pipe
->screen
, indexBuffer
,
362 PIPE_BUFFER_USAGE_CPU_READ
);
363 draw_set_mapped_element_buffer_range(r300
->draw
, indexSize
,
364 minIndex
, maxIndex
, indices
);
366 draw_set_mapped_constant_buffer(r300
->draw
,
368 r300
->shader_constants
[PIPE_SHADER_VERTEX
].constants
,
369 r300
->shader_constants
[PIPE_SHADER_VERTEX
].count
*
370 (sizeof(float) * 4));
372 draw_arrays(r300
->draw
, mode
, start
, count
);
374 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
375 pipe_buffer_unmap(pipe
->screen
, r300
->vertex_buffer
[i
].buffer
);
376 draw_set_mapped_vertex_buffer(r300
->draw
, i
, NULL
);
379 pipe_buffer_unmap(pipe
->screen
, indexBuffer
);
380 draw_set_mapped_element_buffer_range(r300
->draw
, 0, start
,
381 start
+ count
- 1, NULL
);
384 /* Object for rendering using Draw. */
387 struct vbuf_render base
;
390 struct r300_context
* r300
;
392 /* Vertex information */
398 struct pipe_buffer
* vbo
;
405 static INLINE
struct r300_render
*
406 r300_render(struct vbuf_render
* render
)
408 return (struct r300_render
*)render
;
411 static const struct vertex_info
*
412 r300_render_get_vertex_info(struct vbuf_render
* render
)
414 struct r300_render
* r300render
= r300_render(render
);
415 struct r300_context
* r300
= r300render
->r300
;
417 r300_update_derived_state(r300
);
419 return &r300
->vertex_info
->vinfo
;
422 static boolean
r300_render_allocate_vertices(struct vbuf_render
* render
,
426 struct r300_render
* r300render
= r300_render(render
);
427 struct r300_context
* r300
= r300render
->r300
;
428 struct pipe_screen
* screen
= r300
->context
.screen
;
429 size_t size
= (size_t)vertex_size
* (size_t)count
;
431 if (size
+ r300render
->vbo_offset
> r300render
->vbo_size
)
433 pipe_buffer_reference(&r300
->vbo
, NULL
);
434 r300render
->vbo
= pipe_buffer_create(screen
,
436 PIPE_BUFFER_USAGE_VERTEX
,
438 r300render
->vbo_offset
= 0;
439 r300render
->vbo_size
= R300_MAX_VBO_SIZE
;
442 r300render
->vertex_size
= vertex_size
;
443 r300
->vbo
= r300render
->vbo
;
444 r300
->vbo_offset
= r300render
->vbo_offset
;
446 return (r300render
->vbo
) ? TRUE
: FALSE
;
449 static void* r300_render_map_vertices(struct vbuf_render
* render
)
451 struct r300_render
* r300render
= r300_render(render
);
452 struct pipe_screen
* screen
= r300render
->r300
->context
.screen
;
454 r300render
->vbo_ptr
= pipe_buffer_map(screen
, r300render
->vbo
,
455 PIPE_BUFFER_USAGE_CPU_WRITE
);
457 return ((uint8_t*)r300render
->vbo_ptr
+ r300render
->vbo_offset
);
460 static void r300_render_unmap_vertices(struct vbuf_render
* render
,
464 struct r300_render
* r300render
= r300_render(render
);
465 struct pipe_screen
* screen
= r300render
->r300
->context
.screen
;
466 CS_LOCALS(r300render
->r300
);
468 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX
, max
);
471 r300render
->vbo_max_used
= MAX2(r300render
->vbo_max_used
,
472 r300render
->vertex_size
* (max
+ 1));
473 pipe_buffer_unmap(screen
, r300render
->vbo
);
476 static void r300_render_release_vertices(struct vbuf_render
* render
)
478 struct r300_render
* r300render
= r300_render(render
);
480 r300render
->vbo_offset
+= r300render
->vbo_max_used
;
481 r300render
->vbo_max_used
= 0;
484 static boolean
r300_render_set_primitive(struct vbuf_render
* render
,
487 struct r300_render
* r300render
= r300_render(render
);
489 r300render
->prim
= prim
;
490 r300render
->hwprim
= r300_translate_primitive(prim
);
495 static void r300_render_draw_arrays(struct vbuf_render
* render
,
499 struct r300_render
* r300render
= r300_render(render
);
500 struct r300_context
* r300
= r300render
->r300
;
504 r300_emit_dirty_state(r300
);
506 DBG(r300
, DBG_DRAW
, "r300: Doing vbuf render, count %d\n", count
);
509 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2
, 0);
510 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST
| (count
<< 16) |
515 static void r300_render_draw(struct vbuf_render
* render
,
516 const ushort
* indices
,
519 struct r300_render
* r300render
= r300_render(render
);
520 struct r300_context
* r300
= r300render
->r300
;
525 r300_emit_dirty_state(r300
);
527 BEGIN_CS(2 + (count
+1)/2);
528 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2
, (count
+1)/2);
529 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES
| (count
<< 16) |
531 for (i
= 0; i
< count
-1; i
+= 2) {
532 OUT_CS(indices
[i
+1] << 16 | indices
[i
]);
535 OUT_CS(indices
[count
-1]);
540 static void r300_render_destroy(struct vbuf_render
* render
)
545 static struct vbuf_render
* r300_render_create(struct r300_context
* r300
)
547 struct r300_render
* r300render
= CALLOC_STRUCT(r300_render
);
549 r300render
->r300
= r300
;
551 /* XXX find real numbers plz */
552 r300render
->base
.max_vertex_buffer_bytes
= 128 * 1024;
553 r300render
->base
.max_indices
= 16 * 1024;
555 r300render
->base
.get_vertex_info
= r300_render_get_vertex_info
;
556 r300render
->base
.allocate_vertices
= r300_render_allocate_vertices
;
557 r300render
->base
.map_vertices
= r300_render_map_vertices
;
558 r300render
->base
.unmap_vertices
= r300_render_unmap_vertices
;
559 r300render
->base
.set_primitive
= r300_render_set_primitive
;
560 r300render
->base
.draw
= r300_render_draw
;
561 r300render
->base
.draw_arrays
= r300_render_draw_arrays
;
562 r300render
->base
.release_vertices
= r300_render_release_vertices
;
563 r300render
->base
.destroy
= r300_render_destroy
;
565 r300render
->vbo
= NULL
;
566 r300render
->vbo_size
= 0;
567 r300render
->vbo_offset
= 0;
569 return &r300render
->base
;
572 struct draw_stage
* r300_draw_stage(struct r300_context
* r300
)
574 struct vbuf_render
* render
;
575 struct draw_stage
* stage
;
577 render
= r300_render_create(r300
);
583 stage
= draw_vbuf_stage(r300
->draw
, render
);
586 render
->destroy(render
);
590 draw_set_render(r300
->draw
, render
);