1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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 /*
29 * Authors:
30 * Keith Whitwell <keithw@vmware.com>
31 */
32
33
34 #include "util/u_math.h"
35 #include "util/u_memory.h"
36 #include "draw/draw_context.h"
37 #include "draw/draw_private.h"
38 #include "draw/draw_vbuf.h"
39 #include "draw/draw_vertex.h"
40 #include "draw/draw_pt.h"
41 #include "draw/draw_vs.h"
42
43
44 struct fetch_shade_emit;
45
46
47 /* Prototype fetch, shade, emit-hw-verts all in one go.
48 */
49 struct fetch_shade_emit {
50 struct draw_pt_middle_end base;
51 struct draw_context *draw;
52
53 /* Temporaries:
54 */
55 const float *constants;
56 unsigned pitch[PIPE_MAX_ATTRIBS];
57 const ubyte *src[PIPE_MAX_ATTRIBS];
58 unsigned prim;
59
60 struct draw_vs_variant_key key;
61 struct draw_vs_variant *active;
62
63 const struct vertex_info *vinfo;
64 };
65
66
67
68 static void
fse_prepare(struct draw_pt_middle_end * middle,unsigned prim,unsigned opt,unsigned * max_vertices)69 fse_prepare(struct draw_pt_middle_end *middle,
70 unsigned prim,
71 unsigned opt,
72 unsigned *max_vertices)
73 {
74 struct fetch_shade_emit *fse = (struct fetch_shade_emit *)middle;
75 struct draw_context *draw = fse->draw;
76 unsigned num_vs_inputs = draw->vs.vertex_shader->info.num_inputs;
77 const struct vertex_info *vinfo;
78 unsigned i;
79 unsigned nr_vbs = 0;
80
81 /* Can't support geometry shader on this path.
82 */
83 assert(!draw->gs.geometry_shader);
84
85 draw->render->set_primitive(draw->render, prim);
86
87 /* Must do this after set_primitive() above:
88 */
89 fse->vinfo = vinfo = draw->render->get_vertex_info(draw->render);
90
91 fse->key.output_stride = vinfo->size * 4;
92 fse->key.nr_outputs = vinfo->num_attribs;
93 fse->key.nr_inputs = num_vs_inputs;
94
95 fse->key.nr_elements = MAX2(fse->key.nr_outputs, /* outputs - translate to hw format */
96 fse->key.nr_inputs); /* inputs - fetch from api format */
97
98 fse->key.viewport = !draw->bypass_viewport;
99 fse->key.clip = draw->clip_xy || draw->clip_z || draw->clip_user;
100 fse->key.const_vbuffers = 0;
101
102 memset(fse->key.element, 0,
103 fse->key.nr_elements * sizeof(fse->key.element[0]));
104
105 for (i = 0; i < num_vs_inputs; i++) {
106 const struct pipe_vertex_element *src = &draw->pt.vertex_element[i];
107 fse->key.element[i].in.format = src->src_format;
108
109 /* Consider ignoring these, ie make generated programs
110 * independent of this state:
111 */
112 fse->key.element[i].in.buffer = src->vertex_buffer_index;
113 fse->key.element[i].in.offset = src->src_offset;
114 nr_vbs = MAX2(nr_vbs, src->vertex_buffer_index + 1);
115 }
116
117 for (i = 0; i < 5 && i < nr_vbs; i++) {
118 if (draw->pt.vertex_buffer[i].stride == 0)
119 fse->key.const_vbuffers |= (1<<i);
120 }
121
122 if (0) debug_printf("%s: lookup const_vbuffers: %x\n", __FUNCTION__, fse->key.const_vbuffers);
123
124 {
125 unsigned dst_offset = 0;
126
127 for (i = 0; i < vinfo->num_attribs; i++) {
128 unsigned emit_sz = draw_translate_vinfo_size(vinfo->attrib[i].emit);
129
130 /* doesn't handle EMIT_OMIT */
131 assert(emit_sz != 0);
132
133 /* The elements in the key correspond to vertex shader output
134 * numbers, not to positions in the hw vertex description --
135 * that's handled by the output_offset field.
136 */
137 fse->key.element[i].out.format = vinfo->attrib[i].emit;
138 fse->key.element[i].out.vs_output = vinfo->attrib[i].src_index;
139 fse->key.element[i].out.offset = dst_offset;
140
141 dst_offset += emit_sz;
142 assert(fse->key.output_stride >= dst_offset);
143 }
144 }
145
146 fse->active = draw_vs_lookup_variant( draw->vs.vertex_shader,
147 &fse->key );
148
149 if (!fse->active) {
150 assert(0);
151 return ;
152 }
153
154 if (0) debug_printf("%s: found const_vbuffers: %x\n", __FUNCTION__,
155 fse->active->key.const_vbuffers);
156
157 /* Now set buffer pointers:
158 */
159 for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
160 fse->active->set_buffer( fse->active,
161 i,
162 ((const ubyte *) draw->pt.user.vbuffer[i].map +
163 draw->pt.vertex_buffer[i].buffer_offset),
164 draw->pt.vertex_buffer[i].stride,
165 draw->pt.max_index );
166 }
167
168 *max_vertices = (draw->render->max_vertex_buffer_bytes /
169 (vinfo->size * 4));
170
171 /* Probably need to do this somewhere (or fix exec shader not to
172 * need it):
173 */
174 if (1) {
175 struct draw_vertex_shader *vs = draw->vs.vertex_shader;
176 vs->prepare(vs, draw);
177 }
178 }
179
180
181 static void
fse_bind_parameters(struct draw_pt_middle_end * middle)182 fse_bind_parameters(struct draw_pt_middle_end *middle)
183 {
184 /* No-op? */
185 }
186
187
188 static void
fse_run_linear(struct draw_pt_middle_end * middle,unsigned start,unsigned count,unsigned prim_flags)189 fse_run_linear(struct draw_pt_middle_end *middle,
190 unsigned start,
191 unsigned count,
192 unsigned prim_flags)
193 {
194 struct fetch_shade_emit *fse = (struct fetch_shade_emit *)middle;
195 struct draw_context *draw = fse->draw;
196 char *hw_verts;
197
198 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
199 */
200 draw_do_flush( draw, DRAW_FLUSH_BACKEND );
201
202 if (!draw->render->allocate_vertices( draw->render,
203 (ushort)fse->key.output_stride,
204 (ushort)count ))
205 goto fail;
206
207 hw_verts = draw->render->map_vertices( draw->render );
208 if (!hw_verts)
209 goto fail;
210
211 /* Single routine to fetch vertices, run shader and emit HW verts.
212 * Clipping is done elsewhere -- either by the API or on hardware,
213 * or for some other reason not required...
214 */
215 fse->active->run_linear( fse->active,
216 start, count,
217 hw_verts );
218
219 if (0) {
220 unsigned i;
221 for (i = 0; i < count; i++) {
222 debug_printf("\n\n%s vertex %d: (stride %d, offset %d)\n", __FUNCTION__, i,
223 fse->key.output_stride,
224 fse->key.output_stride * i);
225
226 draw_dump_emitted_vertex( fse->vinfo,
227 (const uint8_t *)hw_verts + fse->key.output_stride * i );
228 }
229 }
230
231 draw->render->unmap_vertices( draw->render, 0, (ushort)(count - 1) );
232
233 /* Draw arrays path to avoid re-emitting index list again and
234 * again.
235 */
236 draw->render->draw_arrays( draw->render,
237 0,
238 count );
239
240 draw->render->release_vertices( draw->render );
241
242 return;
243
244 fail:
245 debug_warn_once("allocate or map of vertex buffer failed (out of memory?)");
246 return;
247 }
248
249
250 static void
fse_run(struct draw_pt_middle_end * middle,const unsigned * fetch_elts,unsigned fetch_count,const ushort * draw_elts,unsigned draw_count,unsigned prim_flags)251 fse_run(struct draw_pt_middle_end *middle,
252 const unsigned *fetch_elts,
253 unsigned fetch_count,
254 const ushort *draw_elts,
255 unsigned draw_count,
256 unsigned prim_flags )
257 {
258 struct fetch_shade_emit *fse = (struct fetch_shade_emit *)middle;
259 struct draw_context *draw = fse->draw;
260 void *hw_verts;
261
262 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
263 */
264 draw_do_flush( draw, DRAW_FLUSH_BACKEND );
265
266 if (!draw->render->allocate_vertices( draw->render,
267 (ushort)fse->key.output_stride,
268 (ushort)fetch_count ))
269 goto fail;
270
271 hw_verts = draw->render->map_vertices( draw->render );
272 if (!hw_verts)
273 goto fail;
274
275 /* Single routine to fetch vertices, run shader and emit HW verts.
276 */
277 fse->active->run_elts( fse->active,
278 fetch_elts,
279 fetch_count,
280 hw_verts );
281
282 if (0) {
283 unsigned i;
284 for (i = 0; i < fetch_count; i++) {
285 debug_printf("\n\n%s vertex %d:\n", __FUNCTION__, i);
286 draw_dump_emitted_vertex( fse->vinfo,
287 (const uint8_t *)hw_verts +
288 fse->key.output_stride * i );
289 }
290 }
291
292 draw->render->unmap_vertices( draw->render, 0, (ushort)(fetch_count - 1) );
293
294 draw->render->draw_elements( draw->render,
295 draw_elts,
296 draw_count );
297
298 draw->render->release_vertices( draw->render );
299 return;
300
301 fail:
302 debug_warn_once("allocate or map of vertex buffer failed (out of memory?)");
303 return;
304 }
305
306
307
308 static boolean
fse_run_linear_elts(struct draw_pt_middle_end * middle,unsigned start,unsigned count,const ushort * draw_elts,unsigned draw_count,unsigned prim_flags)309 fse_run_linear_elts(struct draw_pt_middle_end *middle,
310 unsigned start,
311 unsigned count,
312 const ushort *draw_elts,
313 unsigned draw_count,
314 unsigned prim_flags)
315 {
316 struct fetch_shade_emit *fse = (struct fetch_shade_emit *)middle;
317 struct draw_context *draw = fse->draw;
318 char *hw_verts;
319
320 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
321 */
322 draw_do_flush( draw, DRAW_FLUSH_BACKEND );
323
324 if (!draw->render->allocate_vertices( draw->render,
325 (ushort)fse->key.output_stride,
326 (ushort)count ))
327 return FALSE;
328
329 hw_verts = draw->render->map_vertices( draw->render );
330 if (!hw_verts)
331 return FALSE;
332
333 /* Single routine to fetch vertices, run shader and emit HW verts.
334 * Clipping is done elsewhere -- either by the API or on hardware,
335 * or for some other reason not required...
336 */
337 fse->active->run_linear( fse->active,
338 start, count,
339 hw_verts );
340
341 draw->render->draw_elements( draw->render,
342 draw_elts,
343 draw_count );
344
345 draw->render->unmap_vertices( draw->render, 0, (ushort)(count - 1) );
346
347 draw->render->release_vertices( draw->render );
348
349 return TRUE;
350 }
351
352
353
354 static void
fse_finish(struct draw_pt_middle_end * middle)355 fse_finish(struct draw_pt_middle_end *middle)
356 {
357 }
358
359
360 static void
fse_destroy(struct draw_pt_middle_end * middle)361 fse_destroy(struct draw_pt_middle_end *middle)
362 {
363 FREE(middle);
364 }
365
366
367 struct draw_pt_middle_end *
draw_pt_middle_fse(struct draw_context * draw)368 draw_pt_middle_fse(struct draw_context *draw)
369 {
370 struct fetch_shade_emit *fse = CALLOC_STRUCT(fetch_shade_emit);
371 if (!fse)
372 return NULL;
373
374 fse->base.prepare = fse_prepare;
375 fse->base.bind_parameters = fse_bind_parameters;
376 fse->base.run = fse_run;
377 fse->base.run_linear = fse_run_linear;
378 fse->base.run_linear_elts = fse_run_linear_elts;
379 fse->base.finish = fse_finish;
380 fse->base.destroy = fse_destroy;
381 fse->draw = draw;
382
383 return &fse->base;
384 }
385