1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Build post-transformation, post-clipping vertex buffers and element
31 * lists by hooking into the end of the primitive pipeline and
32 * manipulating the vertex_id field in the vertex headers.
34 * XXX: work in progress
36 * \author José Fonseca <jrfonseca@tungstengraphics.com>
37 * \author Keith Whitwell <keith@tungstengraphics.com>
41 #include "draw/draw_context.h"
42 #include "draw/draw_vbuf.h"
43 #include "pipe/p_debug.h"
44 #include "pipe/p_inlines.h"
45 #include "pipe/p_winsys.h"
46 #include "util/u_math.h"
47 #include "util/u_memory.h"
49 #include "i915_context.h"
51 #include "i915_winsys.h"
52 #include "i915_batch.h"
53 #include "i915_state.h"
57 * Primitive renderer for i915.
59 struct i915_vbuf_render
{
60 struct vbuf_render base
;
62 struct i915_context
*i915
;
64 /** Vertex size in bytes */
67 /** Software primitive */
70 /** Hardware primitive */
73 /** Genereate a vertex list */
76 /* Stuff for the vbo */
77 struct pipe_buffer
*vbo
;
81 size_t vbo_alloc_size
;
86 * Basically a cast wrapper.
88 static INLINE
struct i915_vbuf_render
*
89 i915_vbuf_render( struct vbuf_render
*render
)
92 return (struct i915_vbuf_render
*)render
;
96 static const struct vertex_info
*
97 i915_vbuf_render_get_vertex_info( struct vbuf_render
*render
)
99 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
100 struct i915_context
*i915
= i915_render
->i915
;
103 /* make sure we have up to date vertex layout */
104 i915_update_derived( i915
);
107 return &i915
->current
.vertex_info
;
112 i915_vbuf_render_allocate_vertices( struct vbuf_render
*render
,
116 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
117 struct i915_context
*i915
= i915_render
->i915
;
118 struct pipe_screen
*screen
= i915
->pipe
.screen
;
119 size_t size
= (size_t)vertex_size
* (size_t)nr_vertices
;
121 /* FIXME: handle failure */
124 if (i915_render
->vbo_size
> size
+ i915_render
->vbo_offset
&& !i915
->vbo_flushed
) {
126 i915
->vbo_flushed
= 0;
127 pipe_buffer_reference(screen
, &i915_render
->vbo
, NULL
);
130 if (!i915_render
->vbo
) {
131 i915_render
->vbo_size
= MAX2(size
, i915_render
->vbo_alloc_size
);
132 i915_render
->vbo_offset
= 0;
133 i915_render
->vbo
= pipe_buffer_create(screen
,
135 I915_BUFFER_USAGE_LIT_VERTEX
,
136 i915_render
->vbo_size
);
137 i915_render
->vbo_ptr
= pipe_buffer_map(screen
,
139 PIPE_BUFFER_USAGE_CPU_WRITE
);
140 pipe_buffer_unmap(screen
, i915_render
->vbo
);
143 i915
->vbo
= i915_render
->vbo
;
144 i915
->vbo_offset
= i915_render
->vbo_offset
;
145 i915
->dirty
|= I915_NEW_VBO
;
147 return (unsigned char *)i915_render
->vbo_ptr
+ i915
->vbo_offset
;
152 i915_vbuf_render_set_primitive( struct vbuf_render
*render
,
155 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
156 i915_render
->prim
= prim
;
159 case PIPE_PRIM_POINTS
:
160 i915_render
->hwprim
= PRIM3D_POINTLIST
;
161 i915_render
->fallback
= 0;
163 case PIPE_PRIM_LINES
:
164 i915_render
->hwprim
= PRIM3D_LINELIST
;
165 i915_render
->fallback
= 0;
167 case PIPE_PRIM_LINE_LOOP
:
168 i915_render
->hwprim
= PRIM3D_LINELIST
;
169 i915_render
->fallback
= PIPE_PRIM_LINE_LOOP
;
171 case PIPE_PRIM_LINE_STRIP
:
172 i915_render
->hwprim
= PRIM3D_LINESTRIP
;
173 i915_render
->fallback
= 0;
175 case PIPE_PRIM_TRIANGLES
:
176 i915_render
->hwprim
= PRIM3D_TRILIST
;
177 i915_render
->fallback
= 0;
179 case PIPE_PRIM_TRIANGLE_STRIP
:
180 i915_render
->hwprim
= PRIM3D_TRISTRIP
;
181 i915_render
->fallback
= 0;
183 case PIPE_PRIM_TRIANGLE_FAN
:
184 i915_render
->hwprim
= PRIM3D_TRIFAN
;
185 i915_render
->fallback
= 0;
187 case PIPE_PRIM_QUADS
:
188 i915_render
->hwprim
= PRIM3D_TRILIST
;
189 i915_render
->fallback
= PIPE_PRIM_QUADS
;
191 case PIPE_PRIM_QUAD_STRIP
:
192 i915_render
->hwprim
= PRIM3D_TRILIST
;
193 i915_render
->fallback
= PIPE_PRIM_QUAD_STRIP
;
195 case PIPE_PRIM_POLYGON
:
196 i915_render
->hwprim
= PRIM3D_POLY
;
197 i915_render
->fallback
= 0;
200 assert((int)"Error unkown primtive type" & 0);
201 /* Actually, can handle a lot more just fine... Fixme.
210 * Used for fallbacks in draw_arrays
213 draw_arrays_generate_indices( struct vbuf_render
*render
,
214 unsigned start
, uint nr
,
217 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
218 struct i915_context
*i915
= i915_render
->i915
;
220 unsigned end
= start
+ nr
;
223 for (i
= start
; i
+1 < end
; i
+= 2)
224 OUT_BATCH( (i
+0) | (i
+1) << 16 );
228 case PIPE_PRIM_LINE_LOOP
:
230 for (i
= start
+ 1; i
< end
; i
++)
231 OUT_BATCH( (i
-0) | (i
+0) << 16 );
232 OUT_BATCH( (i
-0) | ( start
) << 16 );
235 case PIPE_PRIM_QUADS
:
236 for (i
= start
; i
+ 3 < end
; i
+= 4) {
237 OUT_BATCH( (i
+0) | (i
+1) << 16 );
238 OUT_BATCH( (i
+3) | (i
+1) << 16 );
239 OUT_BATCH( (i
+2) | (i
+3) << 16 );
242 case PIPE_PRIM_QUAD_STRIP
:
243 for (i
= start
; i
+ 3 < end
; i
+= 2) {
244 OUT_BATCH( (i
+0) | (i
+1) << 16 );
245 OUT_BATCH( (i
+3) | (i
+2) << 16 );
246 OUT_BATCH( (i
+0) | (i
+3) << 16 );
255 draw_arrays_calc_nr_indices( uint nr
, unsigned type
)
260 case PIPE_PRIM_LINE_LOOP
:
265 case PIPE_PRIM_QUADS
:
267 case PIPE_PRIM_QUAD_STRIP
:
268 return ((nr
- 2) / 2) * 6;
276 draw_arrays_fallback( struct vbuf_render
*render
,
280 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
281 struct i915_context
*i915
= i915_render
->i915
;
285 i915_update_derived( i915
);
287 if (i915
->hardware_dirty
)
288 i915_emit_hardware_state( i915
);
290 nr_indices
= draw_arrays_calc_nr_indices( nr
, i915_render
->fallback
);
294 if (!BEGIN_BATCH( 1 + (nr_indices
+ 1)/2, 1 )) {
297 /* Make sure state is re-emitted after a flush:
299 i915_update_derived( i915
);
300 i915_emit_hardware_state( i915
);
301 i915
->vbo_flushed
= 1;
303 if (!BEGIN_BATCH( 1 + (nr_indices
+ 1)/2, 1 )) {
308 OUT_BATCH( _3DPRIMITIVE
|
310 i915_render
->hwprim
|
314 draw_arrays_generate_indices( render
, start
, nr
, i915_render
->fallback
);
321 i915_vbuf_render_draw_arrays( struct vbuf_render
*render
,
325 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
327 if (i915_render
->fallback
) {
328 draw_arrays_fallback( render
, start
, nr
);
332 /* JB: TODO submit direct cmds */
333 draw_arrays_fallback( render
, start
, nr
);
337 * Used for normal and fallback emitting of indices
338 * If type is zero normal operation assumed.
341 draw_generate_indices( struct vbuf_render
*render
,
342 const ushort
*indices
,
346 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
347 struct i915_context
*i915
= i915_render
->i915
;
352 for (i
= 0; i
+ 1 < nr_indices
; i
+= 2) {
353 OUT_BATCH( indices
[i
] | indices
[i
+1] << 16 );
355 if (i
< nr_indices
) {
356 OUT_BATCH( indices
[i
] );
359 case PIPE_PRIM_LINE_LOOP
:
360 if (nr_indices
>= 2) {
361 for (i
= 1; i
< nr_indices
; i
++)
362 OUT_BATCH( indices
[i
-1] | indices
[i
] << 16 );
363 OUT_BATCH( indices
[i
-1] | indices
[0] << 16 );
366 case PIPE_PRIM_QUADS
:
367 for (i
= 0; i
+ 3 < nr_indices
; i
+= 4) {
368 OUT_BATCH( indices
[i
+0] | indices
[i
+1] << 16 );
369 OUT_BATCH( indices
[i
+3] | indices
[i
+1] << 16 );
370 OUT_BATCH( indices
[i
+2] | indices
[i
+3] << 16 );
373 case PIPE_PRIM_QUAD_STRIP
:
374 for (i
= 0; i
+ 3 < nr_indices
; i
+= 2) {
375 OUT_BATCH( indices
[i
+0] | indices
[i
+1] << 16 );
376 OUT_BATCH( indices
[i
+3] | indices
[i
+2] << 16 );
377 OUT_BATCH( indices
[i
+0] | indices
[i
+3] << 16 );
387 draw_calc_nr_indices( uint nr_indices
, unsigned type
)
392 case PIPE_PRIM_LINE_LOOP
:
394 return nr_indices
* 2;
397 case PIPE_PRIM_QUADS
:
398 return (nr_indices
/ 4) * 6;
399 case PIPE_PRIM_QUAD_STRIP
:
400 return ((nr_indices
- 2) / 2) * 6;
408 i915_vbuf_render_draw( struct vbuf_render
*render
,
409 const ushort
*indices
,
412 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
413 struct i915_context
*i915
= i915_render
->i915
;
414 unsigned save_nr_indices
;
416 save_nr_indices
= nr_indices
;
418 nr_indices
= draw_calc_nr_indices( nr_indices
, i915_render
->fallback
);
423 i915_update_derived( i915
);
425 if (i915
->hardware_dirty
)
426 i915_emit_hardware_state( i915
);
428 if (!BEGIN_BATCH( 1 + (nr_indices
+ 1)/2, 1 )) {
431 /* Make sure state is re-emitted after a flush:
433 i915_update_derived( i915
);
434 i915_emit_hardware_state( i915
);
435 i915
->vbo_flushed
= 1;
437 if (!BEGIN_BATCH( 1 + (nr_indices
+ 1)/2, 1 )) {
443 OUT_BATCH( _3DPRIMITIVE
|
445 i915_render
->hwprim
|
448 draw_generate_indices( render
,
451 i915_render
->fallback
);
459 i915_vbuf_render_release_vertices( struct vbuf_render
*render
,
461 unsigned vertex_size
,
462 unsigned vertices_used
)
464 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
465 struct i915_context
*i915
= i915_render
->i915
;
466 size_t size
= (size_t)vertex_size
* (size_t)vertices_used
;
470 i915_render
->vbo_offset
+= size
;
472 i915
->dirty
|= I915_NEW_VBO
;
477 i915_vbuf_render_destroy( struct vbuf_render
*render
)
479 struct i915_vbuf_render
*i915_render
= i915_vbuf_render(render
);
485 * Create a new primitive render.
487 static struct vbuf_render
*
488 i915_vbuf_render_create( struct i915_context
*i915
)
490 struct i915_vbuf_render
*i915_render
= CALLOC_STRUCT(i915_vbuf_render
);
491 struct pipe_screen
*screen
= i915
->pipe
.screen
;
493 i915_render
->i915
= i915
;
495 i915_render
->base
.max_vertex_buffer_bytes
= 128*1024;
497 /* NOTE: it must be such that state and vertices indices fit in a single
500 i915_render
->base
.max_indices
= 16*1024;
502 i915_render
->base
.get_vertex_info
= i915_vbuf_render_get_vertex_info
;
503 i915_render
->base
.allocate_vertices
= i915_vbuf_render_allocate_vertices
;
504 i915_render
->base
.set_primitive
= i915_vbuf_render_set_primitive
;
505 i915_render
->base
.draw
= i915_vbuf_render_draw
;
506 i915_render
->base
.draw_arrays
= i915_vbuf_render_draw_arrays
;
507 i915_render
->base
.release_vertices
= i915_vbuf_render_release_vertices
;
508 i915_render
->base
.destroy
= i915_vbuf_render_destroy
;
510 i915_render
->vbo_alloc_size
= 128 * 4096;
511 i915_render
->vbo_size
= i915_render
->vbo_alloc_size
;
512 i915_render
->vbo_offset
= 0;
513 i915_render
->vbo
= pipe_buffer_create(screen
,
515 I915_BUFFER_USAGE_LIT_VERTEX
,
516 i915_render
->vbo_size
);
517 i915_render
->vbo_ptr
= pipe_buffer_map(screen
,
519 PIPE_BUFFER_USAGE_CPU_WRITE
);
520 pipe_buffer_unmap(screen
, i915_render
->vbo
);
522 return &i915_render
->base
;
527 * Create a new primitive vbuf/render stage.
529 struct draw_stage
*i915_draw_vbuf_stage( struct i915_context
*i915
)
531 struct vbuf_render
*render
;
532 struct draw_stage
*stage
;
534 render
= i915_vbuf_render_create(i915
);
538 stage
= draw_vbuf_stage( i915
->draw
, render
);
540 render
->destroy(render
);
543 /** TODO JB: this shouldn't be here */
544 draw_set_render(i915
->draw
, render
);