1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
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:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
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
24 **********************************************************/
26 #include "util/u_inlines.h"
27 #include "util/u_upload_mgr.h"
28 #include "indices/u_indices.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"
37 #include "svga_hw_reg.h"
40 static enum pipe_error
41 translate_indices( struct svga_hwtnl
*hwtnl
,
42 struct pipe_resource
*src
,
46 u_translate_func translate
,
47 struct pipe_resource
**out_buf
)
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
;
57 dst
= pipe_buffer_create( pipe
->screen
,
58 PIPE_BIND_INDEX_BUFFER
,
64 src_map
= pipe_buffer_map( pipe
, src
, PIPE_TRANSFER_READ
, &src_transfer
);
68 dst_map
= pipe_buffer_map( pipe
, dst
, PIPE_TRANSFER_WRITE
, &dst_transfer
);
72 translate( (const char *)src_map
+ offset
,
76 pipe_buffer_unmap( pipe
, src_transfer
);
77 pipe_buffer_unmap( pipe
, dst_transfer
);
84 pipe_buffer_unmap( pipe
, src_transfer
);
87 pipe_buffer_unmap( pipe
, dst_transfer
);
90 pipe
->screen
->resource_destroy( pipe
->screen
, dst
);
92 return PIPE_ERROR_OUT_OF_MEMORY
;
100 svga_hwtnl_simple_draw_range_elements( struct svga_hwtnl
*hwtnl
,
101 struct pipe_resource
*index_buffer
,
110 struct pipe_resource
*upload_buffer
= NULL
;
111 SVGA3dPrimitiveRange range
;
114 unsigned index_offset
= start
* index_size
;
115 enum pipe_error ret
= PIPE_OK
;
117 hw_prim
= svga_translate_prim(prim
, count
, &hw_count
);
122 svga_buffer_is_user_buffer(index_buffer
))
124 assert( index_buffer
->width0
>= index_offset
+ count
* index_size
);
126 ret
= u_upload_buffer( hwtnl
->upload_ib
,
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.
140 index_buffer
= upload_buffer
;
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
;
150 ret
= svga_hwtnl_prim( hwtnl
, &range
, min_index
, max_index
, index_buffer
);
156 pipe_resource_reference( &upload_buffer
, NULL
);
165 svga_hwtnl_draw_range_elements( struct svga_hwtnl
*hwtnl
,
166 struct pipe_resource
*index_buffer
,
171 unsigned prim
, unsigned start
, unsigned count
)
173 unsigned gen_prim
, gen_size
, gen_nr
, gen_type
;
174 u_translate_func gen_func
;
175 enum pipe_error ret
= PIPE_OK
;
177 if (hwtnl
->api_fillmode
!= PIPE_POLYGON_MODE_FILL
&&
178 prim
>= PIPE_PRIM_TRIANGLES
)
180 gen_type
= u_unfilled_translator( prim
,
191 gen_type
= u_index_translator( svga_hw_prims
,
204 if (gen_type
== U_TRANSLATE_MEMCPY
) {
205 /* No need for translation, just pass through to hardware:
207 return svga_hwtnl_simple_draw_range_elements( hwtnl
, index_buffer
,
212 gen_prim
, start
, count
);
215 struct pipe_resource
*gen_buf
= NULL
;
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
224 ret
= translate_indices( hwtnl
,
234 ret
= svga_hwtnl_simple_draw_range_elements( hwtnl
,
248 pipe_resource_reference( &gen_buf
, NULL
);