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 **************************************************************************/
29 * Interface between 'draw' module's output and the softpipe rasterizer/setup
30 * code. When the 'draw' module has finished filling a vertex buffer, the
31 * draw_arrays() functions below will be called. Loop over the vertices and
32 * call the point/line/tri setup functions.
39 #include "sp_context.h"
41 #include "sp_prim_vbuf.h"
42 #include "sp_prim_setup.h"
44 #include "draw/draw_context.h"
45 #include "draw/draw_vbuf.h"
46 #include "util/u_memory.h"
49 #define SP_MAX_VBUF_INDEXES 1024
50 #define SP_MAX_VBUF_SIZE 4096
52 typedef const float (*cptrf4
)[4];
55 * Subclass of vbuf_render.
57 struct softpipe_vbuf_render
59 struct vbuf_render base
;
60 struct softpipe_context
*softpipe
;
64 uint vertex_buffer_size
;
70 static struct softpipe_vbuf_render
*
71 softpipe_vbuf_render(struct vbuf_render
*vbr
)
73 return (struct softpipe_vbuf_render
*) vbr
;
77 static const struct vertex_info
*
78 sp_vbuf_get_vertex_info(struct vbuf_render
*vbr
)
80 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
81 return softpipe_get_vbuf_vertex_info(cvbr
->softpipe
);
86 sp_vbuf_allocate_vertices(struct vbuf_render
*vbr
,
87 ushort vertex_size
, ushort nr_vertices
)
89 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
90 unsigned size
= vertex_size
* nr_vertices
;
92 if (cvbr
->vertex_buffer_size
< size
) {
93 align_free(cvbr
->vertex_buffer
);
94 cvbr
->vertex_buffer
= align_malloc(size
, 16);
95 cvbr
->vertex_buffer_size
= size
;
98 cvbr
->vertex_size
= vertex_size
;
99 cvbr
->nr_vertices
= nr_vertices
;
101 return cvbr
->vertex_buffer
!= NULL
;
105 sp_vbuf_release_vertices(struct vbuf_render
*vbr
)
109 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
110 const struct vertex_info
*info
=
111 softpipe_get_vbuf_vertex_info(cvbr
->softpipe
);
112 const float *vtx
= (const float *) cvbr
->vertex_buffer
;
114 debug_printf("%s (vtx_size = %u, vtx_used = %u)\n",
115 __FUNCTION__
, cvbr
->vertex_size
, cvbr
->nr_vertices
);
116 for (i
= 0; i
< cvbr
->nr_vertices
; i
++) {
117 for (j
= 0; j
< info
->num_attribs
; j
++) {
119 switch (info
->attrib
[j
].emit
) {
120 case EMIT_4F
: k
= 4; break;
121 case EMIT_3F
: k
= 3; break;
122 case EMIT_2F
: k
= 2; break;
123 case EMIT_1F
: k
= 1; break;
126 debug_printf("Vert %u attr %u: ", i
, j
);
128 debug_printf("%g ", vtx
[0]);
137 /* keep the old allocation for next time */
141 sp_vbuf_map_vertices(struct vbuf_render
*vbr
)
143 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
144 return cvbr
->vertex_buffer
;
148 sp_vbuf_unmap_vertices(struct vbuf_render
*vbr
,
152 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
153 assert( cvbr
->vertex_buffer_size
>= (max_index
+1) * cvbr
->vertex_size
);
159 sp_vbuf_set_primitive(struct vbuf_render
*vbr
, unsigned prim
)
161 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
163 /* XXX: break this dependency - make setup_context live under
164 * softpipe, rename the old "setup" draw stage to something else.
166 struct setup_context
*setup_ctx
= sp_draw_setup_context(cvbr
->softpipe
->setup
);
168 setup_prepare( setup_ctx
);
176 static INLINE cptrf4
get_vert( const void *vertex_buffer
,
180 return (cptrf4
)((char *)vertex_buffer
+ index
* stride
);
185 * draw elements / indexed primitives
188 sp_vbuf_draw(struct vbuf_render
*vbr
, const ushort
*indices
, uint nr
)
190 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
191 struct softpipe_context
*softpipe
= cvbr
->softpipe
;
192 const unsigned stride
= softpipe
->vertex_info_vbuf
.size
* sizeof(float);
193 const void *vertex_buffer
= cvbr
->vertex_buffer
;
196 /* XXX: break this dependency - make setup_context live under
197 * softpipe, rename the old "setup" draw stage to something else.
199 struct draw_stage
*setup
= softpipe
->setup
;
200 struct setup_context
*setup_ctx
= sp_draw_setup_context(setup
);
202 switch (cvbr
->prim
) {
203 case PIPE_PRIM_POINTS
:
204 for (i
= 0; i
< nr
; i
++) {
205 setup_point( setup_ctx
,
206 get_vert(vertex_buffer
, indices
[i
-0], stride
) );
210 case PIPE_PRIM_LINES
:
211 for (i
= 1; i
< nr
; i
+= 2) {
212 setup_line( setup_ctx
,
213 get_vert(vertex_buffer
, indices
[i
-1], stride
),
214 get_vert(vertex_buffer
, indices
[i
-0], stride
) );
218 case PIPE_PRIM_LINE_STRIP
:
219 for (i
= 1; i
< nr
; i
++) {
220 setup_line( setup_ctx
,
221 get_vert(vertex_buffer
, indices
[i
-1], stride
),
222 get_vert(vertex_buffer
, indices
[i
-0], stride
) );
226 case PIPE_PRIM_LINE_LOOP
:
227 for (i
= 1; i
< nr
; i
++) {
228 setup_line( setup_ctx
,
229 get_vert(vertex_buffer
, indices
[i
-1], stride
),
230 get_vert(vertex_buffer
, indices
[i
-0], stride
) );
233 setup_line( setup_ctx
,
234 get_vert(vertex_buffer
, indices
[nr
-1], stride
),
235 get_vert(vertex_buffer
, indices
[0], stride
) );
240 case PIPE_PRIM_TRIANGLES
:
241 for (i
= 2; i
< nr
; i
+= 3) {
242 setup_tri( setup_ctx
,
243 get_vert(vertex_buffer
, indices
[i
-2], stride
),
244 get_vert(vertex_buffer
, indices
[i
-1], stride
),
245 get_vert(vertex_buffer
, indices
[i
-0], stride
));
249 case PIPE_PRIM_TRIANGLE_STRIP
:
250 for (i
= 2; i
< nr
; i
+= 1) {
251 setup_tri( setup_ctx
,
252 get_vert(vertex_buffer
, indices
[i
+(i
&1)-2], stride
),
253 get_vert(vertex_buffer
, indices
[i
-(i
&1)-1], stride
),
254 get_vert(vertex_buffer
, indices
[i
-0], stride
));
258 case PIPE_PRIM_TRIANGLE_FAN
:
259 case PIPE_PRIM_POLYGON
:
260 for (i
= 2; i
< nr
; i
+= 1) {
261 setup_tri( setup_ctx
,
262 get_vert(vertex_buffer
, indices
[0], stride
),
263 get_vert(vertex_buffer
, indices
[i
-1], stride
),
264 get_vert(vertex_buffer
, indices
[i
-0], stride
));
267 case PIPE_PRIM_QUADS
:
268 for (i
= 3; i
< nr
; i
+= 4) {
269 setup_tri( setup_ctx
,
270 get_vert(vertex_buffer
, indices
[i
-3], stride
),
271 get_vert(vertex_buffer
, indices
[i
-2], stride
),
272 get_vert(vertex_buffer
, indices
[i
-0], stride
));
274 setup_tri( setup_ctx
,
275 get_vert(vertex_buffer
, indices
[i
-2], stride
),
276 get_vert(vertex_buffer
, indices
[i
-1], stride
),
277 get_vert(vertex_buffer
, indices
[i
-0], stride
));
280 case PIPE_PRIM_QUAD_STRIP
:
281 for (i
= 3; i
< nr
; i
+= 2) {
282 setup_tri( setup_ctx
,
283 get_vert(vertex_buffer
, indices
[i
-3], stride
),
284 get_vert(vertex_buffer
, indices
[i
-2], stride
),
285 get_vert(vertex_buffer
, indices
[i
-0], stride
));
287 setup_tri( setup_ctx
,
288 get_vert(vertex_buffer
, indices
[i
-1], stride
),
289 get_vert(vertex_buffer
, indices
[i
-3], stride
),
290 get_vert(vertex_buffer
, indices
[i
-0], stride
));
297 /* XXX: why are we calling this??? If we had to call something, it
298 * would be a function in sp_setup.c:
300 sp_draw_flush( setup
);
305 * This function is hit when the draw module is working in pass-through mode.
306 * It's up to us to convert the vertex array into point/line/tri prims.
309 sp_vbuf_draw_arrays(struct vbuf_render
*vbr
, uint start
, uint nr
)
311 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
312 struct softpipe_context
*softpipe
= cvbr
->softpipe
;
313 const unsigned stride
= softpipe
->vertex_info_vbuf
.size
* sizeof(float);
314 const void *vertex_buffer
=
315 (void *) get_vert(cvbr
->vertex_buffer
, start
, stride
);
318 /* XXX: break this dependency - make setup_context live under
319 * softpipe, rename the old "setup" draw stage to something else.
321 struct draw_stage
*setup
= softpipe
->setup
;
322 struct setup_context
*setup_ctx
= sp_draw_setup_context(setup
);
324 switch (cvbr
->prim
) {
325 case PIPE_PRIM_POINTS
:
326 for (i
= 0; i
< nr
; i
++) {
327 setup_point( setup_ctx
,
328 get_vert(vertex_buffer
, i
-0, stride
) );
332 case PIPE_PRIM_LINES
:
333 for (i
= 1; i
< nr
; i
+= 2) {
334 setup_line( setup_ctx
,
335 get_vert(vertex_buffer
, i
-1, stride
),
336 get_vert(vertex_buffer
, i
-0, stride
) );
340 case PIPE_PRIM_LINE_STRIP
:
341 for (i
= 1; i
< nr
; i
++) {
342 setup_line( setup_ctx
,
343 get_vert(vertex_buffer
, i
-1, stride
),
344 get_vert(vertex_buffer
, i
-0, stride
) );
348 case PIPE_PRIM_LINE_LOOP
:
349 for (i
= 1; i
< nr
; i
++) {
350 setup_line( setup_ctx
,
351 get_vert(vertex_buffer
, i
-1, stride
),
352 get_vert(vertex_buffer
, i
-0, stride
) );
355 setup_line( setup_ctx
,
356 get_vert(vertex_buffer
, nr
-1, stride
),
357 get_vert(vertex_buffer
, 0, stride
) );
362 case PIPE_PRIM_TRIANGLES
:
363 for (i
= 2; i
< nr
; i
+= 3) {
364 setup_tri( setup_ctx
,
365 get_vert(vertex_buffer
, i
-2, stride
),
366 get_vert(vertex_buffer
, i
-1, stride
),
367 get_vert(vertex_buffer
, i
-0, stride
));
371 case PIPE_PRIM_TRIANGLE_STRIP
:
372 for (i
= 2; i
< nr
; i
+= 1) {
373 setup_tri( setup_ctx
,
374 get_vert(vertex_buffer
, i
+(i
&1)-2, stride
),
375 get_vert(vertex_buffer
, i
-(i
&1)-1, stride
),
376 get_vert(vertex_buffer
, i
-0, stride
));
380 case PIPE_PRIM_TRIANGLE_FAN
:
381 case PIPE_PRIM_POLYGON
:
382 for (i
= 2; i
< nr
; i
+= 1) {
383 setup_tri( setup_ctx
,
384 get_vert(vertex_buffer
, 0, stride
),
385 get_vert(vertex_buffer
, i
-1, stride
),
386 get_vert(vertex_buffer
, i
-0, stride
));
389 case PIPE_PRIM_QUADS
:
390 for (i
= 3; i
< nr
; i
+= 4) {
391 setup_tri( setup_ctx
,
392 get_vert(vertex_buffer
, i
-3, stride
),
393 get_vert(vertex_buffer
, i
-2, stride
),
394 get_vert(vertex_buffer
, i
-0, stride
));
396 setup_tri( setup_ctx
,
397 get_vert(vertex_buffer
, i
-2, stride
),
398 get_vert(vertex_buffer
, i
-1, stride
),
399 get_vert(vertex_buffer
, i
-0, stride
));
402 case PIPE_PRIM_QUAD_STRIP
:
403 for (i
= 3; i
< nr
; i
+= 2) {
404 setup_tri( setup_ctx
,
405 get_vert(vertex_buffer
, i
-3, stride
),
406 get_vert(vertex_buffer
, i
-2, stride
),
407 get_vert(vertex_buffer
, i
-0, stride
));
409 setup_tri( setup_ctx
,
410 get_vert(vertex_buffer
, i
-1, stride
),
411 get_vert(vertex_buffer
, i
-3, stride
),
412 get_vert(vertex_buffer
, i
-0, stride
));
423 sp_vbuf_destroy(struct vbuf_render
*vbr
)
425 struct softpipe_vbuf_render
*cvbr
= softpipe_vbuf_render(vbr
);
426 cvbr
->softpipe
->vbuf_render
= NULL
;
432 * Initialize the post-transform vertex buffer information for the given
436 sp_init_vbuf(struct softpipe_context
*sp
)
440 sp
->vbuf_render
= CALLOC_STRUCT(softpipe_vbuf_render
);
442 sp
->vbuf_render
->base
.max_indices
= SP_MAX_VBUF_INDEXES
;
443 sp
->vbuf_render
->base
.max_vertex_buffer_bytes
= SP_MAX_VBUF_SIZE
;
445 sp
->vbuf_render
->base
.get_vertex_info
= sp_vbuf_get_vertex_info
;
446 sp
->vbuf_render
->base
.allocate_vertices
= sp_vbuf_allocate_vertices
;
447 sp
->vbuf_render
->base
.map_vertices
= sp_vbuf_map_vertices
;
448 sp
->vbuf_render
->base
.unmap_vertices
= sp_vbuf_unmap_vertices
;
449 sp
->vbuf_render
->base
.set_primitive
= sp_vbuf_set_primitive
;
450 sp
->vbuf_render
->base
.draw
= sp_vbuf_draw
;
451 sp
->vbuf_render
->base
.draw_arrays
= sp_vbuf_draw_arrays
;
452 sp
->vbuf_render
->base
.release_vertices
= sp_vbuf_release_vertices
;
453 sp
->vbuf_render
->base
.destroy
= sp_vbuf_destroy
;
455 sp
->vbuf_render
->softpipe
= sp
;
457 sp
->vbuf
= draw_vbuf_stage(sp
->draw
, &sp
->vbuf_render
->base
);
459 draw_set_rasterize_stage(sp
->draw
, sp
->vbuf
);
461 draw_set_render(sp
->draw
, &sp
->vbuf_render
->base
);