draw_pt_fetch_shade_pipeline.c revision f1401385587882bb9d18a5f5b01dcbb71ddf0a2f 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
25 *
26 **************************************************************************/
27
28#include "pipe/p_util.h"
29#include "draw/draw_context.h"
30#include "draw/draw_vbuf.h"
31#include "draw/draw_vertex.h"
32#include "draw/draw_pt.h"
33#include "draw/draw_vs.h"
34#include "translate/translate.h"
35
36
37struct fetch_pipeline_middle_end {
38   struct draw_pt_middle_end base;
39   struct draw_context *draw;
40
41   struct pt_emit *emit;
42   struct pt_fetch *fetch;
43   struct pt_post_vs *post_vs;
44
45   unsigned vertex_data_offset;
46   unsigned vertex_size;
47   unsigned prim;
48   unsigned opt;
49};
50
51
52static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
53                                    unsigned prim,
54				    unsigned opt,
55                                    unsigned *max_vertices )
56{
57   struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
58   struct draw_context *draw = fpme->draw;
59   struct draw_vertex_shader *vs = draw->vs.vertex_shader;
60
61   /* Add one to num_outputs because the pipeline occasionally tags on
62    * an additional texcoord, eg for AA lines.
63    */
64   unsigned nr = MAX2( vs->info.num_inputs,
65		       vs->info.num_outputs + 1 );
66
67   fpme->prim = prim;
68   fpme->opt = opt;
69
70   /* Always leave room for the vertex header whether we need it or
71    * not.  It's hard to get rid of it in particular because of the
72    * viewport code in draw_pt_post_vs.c.
73    */
74   fpme->vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
75
76
77
78   draw_pt_fetch_prepare( fpme->fetch,
79			  fpme->vertex_size );
80
81   /* XXX: it's not really gl rasterization rules we care about here,
82    * but gl vs dx9 clip spaces.
83    */
84   draw_pt_post_vs_prepare( fpme->post_vs,
85			    (boolean)draw->bypass_clipping,
86			    (boolean)draw->identity_viewport,
87			    (boolean)draw->rasterizer->gl_rasterization_rules );
88
89
90   if (!(opt & PT_PIPELINE)) {
91      draw_pt_emit_prepare( fpme->emit,
92			    prim,
93                            max_vertices );
94
95      *max_vertices = MAX2( *max_vertices,
96                            DRAW_PIPE_MAX_VERTICES );
97   }
98   else {
99      *max_vertices = DRAW_PIPE_MAX_VERTICES;
100   }
101
102   /* return even number */
103   *max_vertices = *max_vertices & ~1;
104
105   /* No need to prepare the shader.
106    */
107   vs->prepare(vs, draw);
108}
109
110
111
112static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
113                                const unsigned *fetch_elts,
114                                unsigned fetch_count,
115                                const ushort *draw_elts,
116                                unsigned draw_count )
117{
118   struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
119   struct draw_context *draw = fpme->draw;
120   struct draw_vertex_shader *shader = draw->vs.vertex_shader;
121   unsigned opt = fpme->opt;
122   unsigned alloc_count = align_int( fetch_count, 4 );
123
124   struct vertex_header *pipeline_verts =
125      (struct vertex_header *)MALLOC(fpme->vertex_size * alloc_count);
126
127   if (!pipeline_verts) {
128      /* Not much we can do here - just skip the rendering.
129       */
130      assert(0);
131      return;
132   }
133
134   /* Fetch into our vertex buffer
135    */
136   draw_pt_fetch_run( fpme->fetch,
137		      fetch_elts,
138		      fetch_count,
139		      (char *)pipeline_verts );
140
141   /* Run the shader, note that this overwrites the data[] parts of
142    * the pipeline verts.  If there is no shader, ie a bypass shader,
143    * then the inputs == outputs, and are already in the correct
144    * place.
145    */
146   if (opt & PT_SHADE)
147   {
148      shader->run_linear(shader,
149			 (const float (*)[4])pipeline_verts->data,
150			 (      float (*)[4])pipeline_verts->data,
151			 (const float (*)[4])draw->pt.user.constants,
152			 fetch_count,
153			 fpme->vertex_size,
154			 fpme->vertex_size);
155   }
156
157   if (draw_pt_post_vs_run( fpme->post_vs,
158			    pipeline_verts,
159			    fetch_count,
160			    fpme->vertex_size ))
161   {
162      opt |= PT_PIPELINE;
163   }
164
165   /* Do we need to run the pipeline?
166    */
167   if (opt & PT_PIPELINE) {
168      draw_pipeline_run( fpme->draw,
169                         fpme->prim,
170                         pipeline_verts,
171                         fetch_count,
172                         fpme->vertex_size,
173                         draw_elts,
174                         draw_count );
175   }
176   else {
177      draw_pt_emit( fpme->emit,
178		    (const float (*)[4])pipeline_verts->data,
179		    fetch_count,
180		    fpme->vertex_size,
181		    draw_elts,
182		    draw_count );
183   }
184
185
186   FREE(pipeline_verts);
187}
188
189
190static void fetch_pipeline_linear_run( struct draw_pt_middle_end *middle,
191                                       unsigned start,
192                                       unsigned count)
193{
194   struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
195   struct draw_context *draw = fpme->draw;
196   struct draw_vertex_shader *shader = draw->vs.vertex_shader;
197   unsigned opt = fpme->opt;
198   unsigned alloc_count = align_int( count, 4 );
199
200   struct vertex_header *pipeline_verts =
201      (struct vertex_header *)MALLOC(fpme->vertex_size * alloc_count);
202
203   if (!pipeline_verts) {
204      /* Not much we can do here - just skip the rendering.
205       */
206      assert(0);
207      return;
208   }
209
210   /* Fetch into our vertex buffer
211    */
212   draw_pt_fetch_run_linear( fpme->fetch,
213                             start,
214                             count,
215                             (char *)pipeline_verts );
216
217   /* Run the shader, note that this overwrites the data[] parts of
218    * the pipeline verts.  If there is no shader, ie a bypass shader,
219    * then the inputs == outputs, and are already in the correct
220    * place.
221    */
222   if (opt & PT_SHADE)
223   {
224      shader->run_linear(shader,
225			 (const float (*)[4])pipeline_verts->data,
226			 (      float (*)[4])pipeline_verts->data,
227			 (const float (*)[4])draw->pt.user.constants,
228			 count,
229			 fpme->vertex_size,
230			 fpme->vertex_size);
231   }
232
233   if (draw_pt_post_vs_run( fpme->post_vs,
234			    pipeline_verts,
235			    count,
236			    fpme->vertex_size ))
237   {
238      opt |= PT_PIPELINE;
239   }
240
241   /* Do we need to run the pipeline?
242    */
243   if (opt & PT_PIPELINE) {
244      draw_pipeline_run_linear( fpme->draw,
245                                fpme->prim,
246                                pipeline_verts,
247                                count,
248                                fpme->vertex_size);
249   }
250   else {
251      draw_pt_emit_linear( fpme->emit,
252                           (const float (*)[4])pipeline_verts->data,
253                           count,
254                           fpme->vertex_size,
255                           0, /*start*/
256                           count );
257   }
258
259   FREE(pipeline_verts);
260}
261
262
263
264static void fetch_pipeline_linear_run_elts( struct draw_pt_middle_end *middle,
265                                            unsigned start,
266                                            unsigned count,
267                                            const ushort *draw_elts,
268                                            unsigned draw_count )
269{
270   struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
271   struct draw_context *draw = fpme->draw;
272   struct draw_vertex_shader *shader = draw->vs.vertex_shader;
273   unsigned opt = fpme->opt;
274   unsigned alloc_count = align_int( count, 4 );
275
276   struct vertex_header *pipeline_verts =
277      (struct vertex_header *)MALLOC(fpme->vertex_size * alloc_count);
278
279   if (!pipeline_verts) {
280      /* Not much we can do here - just skip the rendering.
281       */
282      assert(0);
283      return;
284   }
285
286   /* Fetch into our vertex buffer
287    */
288   draw_pt_fetch_run_linear( fpme->fetch,
289                             start,
290                             count,
291                             (char *)pipeline_verts );
292
293   /* Run the shader, note that this overwrites the data[] parts of
294    * the pipeline verts.  If there is no shader, ie a bypass shader,
295    * then the inputs == outputs, and are already in the correct
296    * place.
297    */
298   if (opt & PT_SHADE)
299   {
300      shader->run_linear(shader,
301			 (const float (*)[4])pipeline_verts->data,
302			 (      float (*)[4])pipeline_verts->data,
303			 (const float (*)[4])draw->pt.user.constants,
304			 count,
305			 fpme->vertex_size,
306			 fpme->vertex_size);
307   }
308
309   if (draw_pt_post_vs_run( fpme->post_vs,
310			    pipeline_verts,
311			    count,
312			    fpme->vertex_size ))
313   {
314      opt |= PT_PIPELINE;
315   }
316
317   /* Do we need to run the pipeline?
318    */
319   if (opt & PT_PIPELINE) {
320      draw_pipeline_run( fpme->draw,
321                         fpme->prim,
322                         pipeline_verts,
323                         count,
324                         fpme->vertex_size,
325                         draw_elts,
326                         draw_count );
327   }
328   else {
329      draw_pt_emit( fpme->emit,
330		    (const float (*)[4])pipeline_verts->data,
331		    count,
332		    fpme->vertex_size,
333		    draw_elts,
334		    draw_count );
335   }
336
337   FREE(pipeline_verts);
338}
339
340
341
342static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
343{
344   /* nothing to do */
345}
346
347static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
348{
349   struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
350
351   if (fpme->fetch)
352      draw_pt_fetch_destroy( fpme->fetch );
353
354   if (fpme->emit)
355      draw_pt_emit_destroy( fpme->emit );
356
357   if (fpme->post_vs)
358      draw_pt_post_vs_destroy( fpme->post_vs );
359
360   FREE(middle);
361}
362
363
364struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
365{
366   struct fetch_pipeline_middle_end *fpme = CALLOC_STRUCT( fetch_pipeline_middle_end );
367   if (!fpme)
368      goto fail;
369
370   fpme->base.prepare        = fetch_pipeline_prepare;
371   fpme->base.run            = fetch_pipeline_run;
372   fpme->base.run_linear     = fetch_pipeline_linear_run;
373   fpme->base.run_linear_elts = fetch_pipeline_linear_run_elts;
374   fpme->base.finish         = fetch_pipeline_finish;
375   fpme->base.destroy        = fetch_pipeline_destroy;
376
377   fpme->draw = draw;
378
379   fpme->fetch = draw_pt_fetch_create( draw );
380   if (!fpme->fetch)
381      goto fail;
382
383   fpme->post_vs = draw_pt_post_vs_create( draw );
384   if (!fpme->post_vs)
385      goto fail;
386
387   fpme->emit = draw_pt_emit_create( draw );
388   if (!fpme->emit)
389      goto fail;
390
391   return &fpme->base;
392
393 fail:
394   if (fpme)
395      fetch_pipeline_destroy( &fpme->base );
396
397   return NULL;
398}
399