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 "util/u_inlines.h"
27 #include "util/u_upload_mgr.h"
28 #include "indices/u_indices.h"
29
30 #include "svga_cmd.h"
31 #include "svga_draw.h"
32 #include "svga_draw_private.h"
33 #include "svga_resource_buffer.h"
34 #include "svga_winsys.h"
35 #include "svga_context.h"
36
37 #include "svga_hw_reg.h"
38
39
40 static enum pipe_error
translate_indices(struct svga_hwtnl * hwtnl,struct pipe_resource * src,unsigned offset,unsigned nr,unsigned index_size,u_translate_func translate,struct pipe_resource ** out_buf)41 translate_indices( struct svga_hwtnl *hwtnl,
42 struct pipe_resource *src,
43 unsigned offset,
44 unsigned nr,
45 unsigned index_size,
46 u_translate_func translate,
47 struct pipe_resource **out_buf )
48 {
49 struct pipe_context *pipe = &hwtnl->svga->pipe;
50 struct pipe_transfer *src_transfer = NULL;
51 struct pipe_transfer *dst_transfer = NULL;
52 unsigned size = index_size * nr;
53 const void *src_map = NULL;
54 struct pipe_resource *dst = NULL;
55 void *dst_map = NULL;
56
57 dst = pipe_buffer_create( pipe->screen,
58 PIPE_BIND_INDEX_BUFFER,
59 PIPE_USAGE_STATIC,
60 size );
61 if (dst == NULL)
62 goto fail;
63
64 src_map = pipe_buffer_map( pipe, src, PIPE_TRANSFER_READ, &src_transfer );
65 if (src_map == NULL)
66 goto fail;
67
68 dst_map = pipe_buffer_map( pipe, dst, PIPE_TRANSFER_WRITE, &dst_transfer );
69 if (dst_map == NULL)
70 goto fail;
71
72 translate( (const char *)src_map + offset,
73 nr,
74 dst_map );
75
76 pipe_buffer_unmap( pipe, src_transfer );
77 pipe_buffer_unmap( pipe, dst_transfer );
78
79 *out_buf = dst;
80 return PIPE_OK;
81
82 fail:
83 if (src_map)
84 pipe_buffer_unmap( pipe, src_transfer );
85
86 if (dst_map)
87 pipe_buffer_unmap( pipe, dst_transfer );
88
89 if (dst)
90 pipe->screen->resource_destroy( pipe->screen, dst );
91
92 return PIPE_ERROR_OUT_OF_MEMORY;
93 }
94
95
96
97
98
99 enum pipe_error
svga_hwtnl_simple_draw_range_elements(struct svga_hwtnl * hwtnl,struct pipe_resource * index_buffer,unsigned index_size,int index_bias,unsigned min_index,unsigned max_index,unsigned prim,unsigned start,unsigned count)100 svga_hwtnl_simple_draw_range_elements( struct svga_hwtnl *hwtnl,
101 struct pipe_resource *index_buffer,
102 unsigned index_size,
103 int index_bias,
104 unsigned min_index,
105 unsigned max_index,
106 unsigned prim,
107 unsigned start,
108 unsigned count )
109 {
110 struct pipe_resource *upload_buffer = NULL;
111 SVGA3dPrimitiveRange range;
112 unsigned hw_prim;
113 unsigned hw_count;
114 unsigned index_offset = start * index_size;
115 enum pipe_error ret = PIPE_OK;
116
117 hw_prim = svga_translate_prim(prim, count, &hw_count);
118 if (hw_count == 0)
119 goto done;
120
121 if (index_buffer &&
122 svga_buffer_is_user_buffer(index_buffer))
123 {
124 assert( index_buffer->width0 >= index_offset + count * index_size );
125
126 ret = u_upload_buffer( hwtnl->upload_ib,
127 0,
128 index_offset,
129 count * index_size,
130 index_buffer,
131 &index_offset,
132 &upload_buffer);
133 if (ret != PIPE_OK)
134 goto done;
135
136 /* Don't need to worry about refcounting index_buffer as this is
137 * just a stack variable without a counted reference of its own.
138 * The caller holds the reference.
139 */
140 index_buffer = upload_buffer;
141 }
142
143 range.primType = hw_prim;
144 range.primitiveCount = hw_count;
145 range.indexArray.offset = index_offset;
146 range.indexArray.stride = index_size;
147 range.indexWidth = index_size;
148 range.indexBias = index_bias;
149
150 ret = svga_hwtnl_prim( hwtnl, &range, min_index, max_index, index_buffer );
151 if (ret != PIPE_OK)
152 goto done;
153
154 done:
155 if (upload_buffer)
156 pipe_resource_reference( &upload_buffer, NULL );
157
158 return ret;
159 }
160
161
162
163
164 enum pipe_error
svga_hwtnl_draw_range_elements(struct svga_hwtnl * hwtnl,struct pipe_resource * index_buffer,unsigned index_size,int index_bias,unsigned min_index,unsigned max_index,unsigned prim,unsigned start,unsigned count)165 svga_hwtnl_draw_range_elements( struct svga_hwtnl *hwtnl,
166 struct pipe_resource *index_buffer,
167 unsigned index_size,
168 int index_bias,
169 unsigned min_index,
170 unsigned max_index,
171 unsigned prim, unsigned start, unsigned count)
172 {
173 unsigned gen_prim, gen_size, gen_nr, gen_type;
174 u_translate_func gen_func;
175 enum pipe_error ret = PIPE_OK;
176
177 if (hwtnl->api_fillmode != PIPE_POLYGON_MODE_FILL &&
178 prim >= PIPE_PRIM_TRIANGLES)
179 {
180 gen_type = u_unfilled_translator( prim,
181 index_size,
182 count,
183 hwtnl->api_fillmode,
184 &gen_prim,
185 &gen_size,
186 &gen_nr,
187 &gen_func );
188 }
189 else
190 {
191 gen_type = u_index_translator( svga_hw_prims,
192 prim,
193 index_size,
194 count,
195 hwtnl->api_pv,
196 hwtnl->hw_pv,
197 &gen_prim,
198 &gen_size,
199 &gen_nr,
200 &gen_func );
201 }
202
203
204 if (gen_type == U_TRANSLATE_MEMCPY) {
205 /* No need for translation, just pass through to hardware:
206 */
207 return svga_hwtnl_simple_draw_range_elements( hwtnl, index_buffer,
208 index_size,
209 index_bias,
210 min_index,
211 max_index,
212 gen_prim, start, count );
213 }
214 else {
215 struct pipe_resource *gen_buf = NULL;
216
217 /* Need to allocate a new index buffer and run the translate
218 * func to populate it. Could potentially cache this translated
219 * index buffer with the original to avoid future
220 * re-translations. Not much point if we're just accelerating
221 * GL though, as index buffers are typically used only once
222 * there.
223 */
224 ret = translate_indices( hwtnl,
225 index_buffer,
226 start * index_size,
227 gen_nr,
228 gen_size,
229 gen_func,
230 &gen_buf );
231 if (ret != PIPE_OK)
232 goto done;
233
234 ret = svga_hwtnl_simple_draw_range_elements( hwtnl,
235 gen_buf,
236 gen_size,
237 index_bias,
238 min_index,
239 max_index,
240 gen_prim,
241 0,
242 gen_nr );
243 if (ret != PIPE_OK)
244 goto done;
245
246 done:
247 if (gen_buf)
248 pipe_resource_reference( &gen_buf, NULL );
249
250 return ret;
251 }
252 }
253
254
255
256
257
258