1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26 #include "draw/draw_vbuf.h"
27 #include "draw/draw_context.h"
28 #include "draw/draw_vertex.h"
29
30 #include "util/u_debug.h"
31 #include "util/u_inlines.h"
32 #include "util/u_math.h"
33 #include "util/u_memory.h"
34
35 #include "svga_context.h"
36 #include "svga_state.h"
37 #include "svga_swtnl.h"
38
39 #include "svga_types.h"
40 #include "svga_reg.h"
41 #include "svga3d_reg.h"
42 #include "svga_draw.h"
43 #include "svga_swtnl_private.h"
44
45
46 static const struct vertex_info *
svga_vbuf_render_get_vertex_info(struct vbuf_render * render)47 svga_vbuf_render_get_vertex_info( struct vbuf_render *render )
48 {
49 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
50 struct svga_context *svga = svga_render->svga;
51
52 svga_swtnl_update_vdecl(svga);
53
54 return &svga_render->vertex_info;
55 }
56
57
58 static boolean
svga_vbuf_render_allocate_vertices(struct vbuf_render * render,ushort vertex_size,ushort nr_vertices)59 svga_vbuf_render_allocate_vertices( struct vbuf_render *render,
60 ushort vertex_size,
61 ushort nr_vertices )
62 {
63 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
64 struct svga_context *svga = svga_render->svga;
65 struct pipe_screen *screen = svga->pipe.screen;
66 size_t size = (size_t)nr_vertices * (size_t)vertex_size;
67 boolean new_vbuf = FALSE;
68 boolean new_ibuf = FALSE;
69
70 if (svga_render->vertex_size != vertex_size)
71 svga->swtnl.new_vdecl = TRUE;
72 svga_render->vertex_size = (size_t)vertex_size;
73
74 if (svga->swtnl.new_vbuf)
75 new_ibuf = new_vbuf = TRUE;
76 svga->swtnl.new_vbuf = FALSE;
77
78 if (svga_render->vbuf_size < svga_render->vbuf_offset + svga_render->vbuf_used + size)
79 new_vbuf = TRUE;
80
81 if (new_vbuf)
82 pipe_resource_reference(&svga_render->vbuf, NULL);
83 if (new_ibuf)
84 pipe_resource_reference(&svga_render->ibuf, NULL);
85
86 if (!svga_render->vbuf) {
87 svga_render->vbuf_size = MAX2(size, svga_render->vbuf_alloc_size);
88 svga_render->vbuf = pipe_buffer_create(screen,
89 PIPE_BIND_VERTEX_BUFFER,
90 PIPE_USAGE_STREAM,
91 svga_render->vbuf_size);
92 if(!svga_render->vbuf) {
93 svga_context_flush(svga, NULL);
94 assert(!svga_render->vbuf);
95 svga_render->vbuf = pipe_buffer_create(screen,
96 PIPE_BIND_VERTEX_BUFFER,
97 PIPE_USAGE_STREAM,
98 svga_render->vbuf_size);
99 /* The buffer allocation may fail if we run out of memory.
100 * The draw module's vbuf code should handle that without crashing.
101 */
102 }
103
104 svga->swtnl.new_vdecl = TRUE;
105 svga_render->vbuf_offset = 0;
106 } else {
107 svga_render->vbuf_offset += svga_render->vbuf_used;
108 }
109
110 svga_render->vbuf_used = 0;
111
112 if (svga->swtnl.new_vdecl)
113 svga_render->vdecl_offset = svga_render->vbuf_offset;
114
115 return TRUE;
116 }
117
118 static void *
svga_vbuf_render_map_vertices(struct vbuf_render * render)119 svga_vbuf_render_map_vertices( struct vbuf_render *render )
120 {
121 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
122 struct svga_context *svga = svga_render->svga;
123
124 if (svga_render->vbuf) {
125 char *ptr = (char*)pipe_buffer_map(&svga->pipe,
126 svga_render->vbuf,
127 PIPE_TRANSFER_WRITE |
128 PIPE_TRANSFER_FLUSH_EXPLICIT |
129 PIPE_TRANSFER_DISCARD_RANGE |
130 PIPE_TRANSFER_UNSYNCHRONIZED,
131 &svga_render->vbuf_transfer);
132 if (ptr)
133 return ptr + svga_render->vbuf_offset;
134 else
135 return NULL;
136 }
137 else {
138 /* we probably ran out of memory when allocating the vertex buffer */
139 return NULL;
140 }
141 }
142
143 static void
svga_vbuf_render_unmap_vertices(struct vbuf_render * render,ushort min_index,ushort max_index)144 svga_vbuf_render_unmap_vertices( struct vbuf_render *render,
145 ushort min_index,
146 ushort max_index )
147 {
148 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
149 struct svga_context *svga = svga_render->svga;
150 unsigned offset, length;
151 size_t used = svga_render->vertex_size * ((size_t)max_index + 1);
152
153 offset = svga_render->vbuf_offset + svga_render->vertex_size * min_index;
154 length = svga_render->vertex_size * (max_index + 1 - min_index);
155 pipe_buffer_flush_mapped_range(&svga->pipe,
156 svga_render->vbuf_transfer,
157 offset, length);
158 pipe_buffer_unmap(&svga->pipe, svga_render->vbuf_transfer);
159 svga_render->min_index = min_index;
160 svga_render->max_index = max_index;
161 svga_render->vbuf_used = MAX2(svga_render->vbuf_used, used);
162 }
163
164 static void
svga_vbuf_render_set_primitive(struct vbuf_render * render,unsigned prim)165 svga_vbuf_render_set_primitive( struct vbuf_render *render,
166 unsigned prim )
167 {
168 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
169 svga_render->prim = prim;
170 }
171
172 static void
svga_vbuf_submit_state(struct svga_vbuf_render * svga_render)173 svga_vbuf_submit_state( struct svga_vbuf_render *svga_render )
174 {
175 struct svga_context *svga = svga_render->svga;
176 SVGA3dVertexDecl vdecl[PIPE_MAX_ATTRIBS];
177 enum pipe_error ret;
178 int i;
179
180 /* if the vdecl or vbuf hasn't changed do nothing */
181 if (!svga->swtnl.new_vdecl)
182 return;
183
184 memcpy(vdecl, svga_render->vdecl, sizeof(vdecl));
185
186 /* flush the hw state */
187 ret = svga_hwtnl_flush(svga->hwtnl);
188 if (ret != PIPE_OK) {
189 svga_context_flush(svga, NULL);
190 ret = svga_hwtnl_flush(svga->hwtnl);
191 /* if we hit this path we might become synced with hw */
192 svga->swtnl.new_vbuf = TRUE;
193 assert(ret == 0);
194 }
195
196 svga_hwtnl_reset_vdecl(svga->hwtnl, svga_render->vdecl_count);
197
198 for (i = 0; i < svga_render->vdecl_count; i++) {
199 vdecl[i].array.offset += svga_render->vdecl_offset;
200
201 svga_hwtnl_vdecl( svga->hwtnl,
202 i,
203 &vdecl[i],
204 svga_render->vbuf );
205 }
206
207 /* We have already taken care of flatshading, so let the hwtnl
208 * module use whatever is most convenient:
209 */
210 if (svga->state.sw.need_pipeline) {
211 svga_hwtnl_set_flatshade(svga->hwtnl, FALSE, FALSE);
212 svga_hwtnl_set_unfilled(svga->hwtnl, PIPE_POLYGON_MODE_FILL);
213 }
214 else {
215 svga_hwtnl_set_flatshade( svga->hwtnl,
216 svga->curr.rast->templ.flatshade,
217 svga->curr.rast->templ.flatshade_first );
218
219 svga_hwtnl_set_unfilled( svga->hwtnl,
220 svga->curr.rast->hw_unfilled );
221 }
222
223 svga->swtnl.new_vdecl = FALSE;
224 }
225
226 static void
svga_vbuf_render_draw_arrays(struct vbuf_render * render,unsigned start,uint nr)227 svga_vbuf_render_draw_arrays( struct vbuf_render *render,
228 unsigned start,
229 uint nr )
230 {
231 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
232 struct svga_context *svga = svga_render->svga;
233 unsigned bias = (svga_render->vbuf_offset - svga_render->vdecl_offset) / svga_render->vertex_size;
234 enum pipe_error ret = PIPE_OK;
235
236 /* off to hardware */
237 svga_vbuf_submit_state(svga_render);
238
239 /* Need to call update_state() again as the draw module may have
240 * altered some of our state behind our backs. Testcase:
241 * redbook/polys.c
242 */
243 svga_update_state_retry( svga, SVGA_STATE_HW_DRAW );
244
245 ret = svga_hwtnl_draw_arrays(svga->hwtnl, svga_render->prim, start + bias, nr);
246 if (ret != PIPE_OK) {
247 svga_context_flush(svga, NULL);
248 ret = svga_hwtnl_draw_arrays(svga->hwtnl, svga_render->prim, start + bias, nr);
249 svga->swtnl.new_vbuf = TRUE;
250 assert(ret == PIPE_OK);
251 }
252 }
253
254
255 static void
svga_vbuf_render_draw_elements(struct vbuf_render * render,const ushort * indices,uint nr_indices)256 svga_vbuf_render_draw_elements( struct vbuf_render *render,
257 const ushort *indices,
258 uint nr_indices)
259 {
260 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
261 struct svga_context *svga = svga_render->svga;
262 struct pipe_screen *screen = svga->pipe.screen;
263 int bias = (svga_render->vbuf_offset - svga_render->vdecl_offset) / svga_render->vertex_size;
264 boolean ret;
265 size_t size = 2 * nr_indices;
266
267 assert(( svga_render->vbuf_offset - svga_render->vdecl_offset) % svga_render->vertex_size == 0);
268
269 if (svga_render->ibuf_size < svga_render->ibuf_offset + size)
270 pipe_resource_reference(&svga_render->ibuf, NULL);
271
272 if (!svga_render->ibuf) {
273 svga_render->ibuf_size = MAX2(size, svga_render->ibuf_alloc_size);
274 svga_render->ibuf = pipe_buffer_create(screen,
275 PIPE_BIND_INDEX_BUFFER,
276 PIPE_USAGE_STREAM,
277 svga_render->ibuf_size);
278 svga_render->ibuf_offset = 0;
279 }
280
281 pipe_buffer_write_nooverlap(&svga->pipe, svga_render->ibuf,
282 svga_render->ibuf_offset, 2 * nr_indices, indices);
283
284 /* off to hardware */
285 svga_vbuf_submit_state(svga_render);
286
287 /* Need to call update_state() again as the draw module may have
288 * altered some of our state behind our backs. Testcase:
289 * redbook/polys.c
290 */
291 svga_update_state_retry( svga, SVGA_STATE_HW_DRAW );
292
293 ret = svga_hwtnl_draw_range_elements(svga->hwtnl,
294 svga_render->ibuf,
295 2,
296 bias,
297 svga_render->min_index,
298 svga_render->max_index,
299 svga_render->prim,
300 svga_render->ibuf_offset / 2, nr_indices);
301 if(ret != PIPE_OK) {
302 svga_context_flush(svga, NULL);
303 ret = svga_hwtnl_draw_range_elements(svga->hwtnl,
304 svga_render->ibuf,
305 2,
306 bias,
307 svga_render->min_index,
308 svga_render->max_index,
309 svga_render->prim,
310 svga_render->ibuf_offset / 2, nr_indices);
311 svga->swtnl.new_vbuf = TRUE;
312 assert(ret == PIPE_OK);
313 }
314
315 svga_render->ibuf_offset += size;
316 }
317
318
319 static void
svga_vbuf_render_release_vertices(struct vbuf_render * render)320 svga_vbuf_render_release_vertices( struct vbuf_render *render )
321 {
322
323 }
324
325
326 static void
svga_vbuf_render_destroy(struct vbuf_render * render)327 svga_vbuf_render_destroy( struct vbuf_render *render )
328 {
329 struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
330
331 pipe_resource_reference(&svga_render->vbuf, NULL);
332 pipe_resource_reference(&svga_render->ibuf, NULL);
333 FREE(svga_render);
334 }
335
336
337 /**
338 * Create a new primitive render.
339 */
340 struct vbuf_render *
svga_vbuf_render_create(struct svga_context * svga)341 svga_vbuf_render_create( struct svga_context *svga )
342 {
343 struct svga_vbuf_render *svga_render = CALLOC_STRUCT(svga_vbuf_render);
344
345 svga_render->svga = svga;
346 svga_render->ibuf_size = 0;
347 svga_render->vbuf_size = 0;
348 svga_render->ibuf_alloc_size = 4*1024;
349 svga_render->vbuf_alloc_size = 64*1024;
350 svga_render->base.max_vertex_buffer_bytes = 64*1024/10;
351 svga_render->base.max_indices = 65536;
352 svga_render->base.get_vertex_info = svga_vbuf_render_get_vertex_info;
353 svga_render->base.allocate_vertices = svga_vbuf_render_allocate_vertices;
354 svga_render->base.map_vertices = svga_vbuf_render_map_vertices;
355 svga_render->base.unmap_vertices = svga_vbuf_render_unmap_vertices;
356 svga_render->base.set_primitive = svga_vbuf_render_set_primitive;
357 svga_render->base.draw_elements = svga_vbuf_render_draw_elements;
358 svga_render->base.draw_arrays = svga_vbuf_render_draw_arrays;
359 svga_render->base.release_vertices = svga_vbuf_render_release_vertices;
360 svga_render->base.destroy = svga_vbuf_render_destroy;
361
362 return &svga_render->base;
363 }
364