1 /**************************************************************************
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "util/u_memory.h"
29 #include "util/u_math.h"
30 #include "draw/draw_context.h"
31 #include "draw/draw_private.h"
32 #include "draw/draw_vbuf.h"
33 #include "draw/draw_vertex.h"
34 #include "draw/draw_pt.h"
35 #include "translate/translate.h"
36 #include "translate/translate_cache.h"
40 struct draw_context
*draw
;
42 struct translate
*translate
;
45 boolean need_edgeflags
;
47 struct translate_cache
*cache
;
50 /* Perform the fetch from API vertex elements & vertex buffers, to a
51 * contiguous set of float[4] attributes as required for the
52 * vertex_shader->run_linear() method.
54 * This is used in all cases except pure passthrough
55 * (draw_pt_fetch_emit.c) which has its own version to translate
56 * directly to hw vertices.
59 void draw_pt_fetch_prepare( struct pt_fetch
*fetch
,
60 unsigned vs_input_count
,
61 unsigned vertex_size
)
63 struct draw_context
*draw
= fetch
->draw
;
66 unsigned dst_offset
= 0;
67 struct translate_key key
;
69 fetch
->vertex_size
= vertex_size
;
71 /* Always emit/leave space for a vertex header.
73 * It's worth considering whether the vertex headers should contain
74 * a pointer to the 'data', rather than having it inline.
75 * Something to look at after we've fully switched over to the pt
79 /* Need to set header->vertex_id = 0xffff somehow.
81 key
.element
[nr
].input_format
= PIPE_FORMAT_R32_FLOAT
;
82 key
.element
[nr
].input_buffer
= draw
->pt
.nr_vertex_buffers
;
83 key
.element
[nr
].input_offset
= 0;
84 key
.element
[nr
].output_format
= PIPE_FORMAT_R32_FLOAT
;
85 key
.element
[nr
].output_offset
= dst_offset
;
86 dst_offset
+= 1 * sizeof(float);
90 /* Just leave the clip[] array untouched.
92 dst_offset
+= 4 * sizeof(float);
95 assert( draw
->pt
.nr_vertex_elements
>= vs_input_count
);
97 nr_inputs
= MIN2( vs_input_count
, draw
->pt
.nr_vertex_elements
);
99 for (i
= 0; i
< nr_inputs
; i
++) {
100 key
.element
[nr
].input_format
= draw
->pt
.vertex_element
[i
].src_format
;
101 key
.element
[nr
].input_buffer
= draw
->pt
.vertex_element
[i
].vertex_buffer_index
;
102 key
.element
[nr
].input_offset
= draw
->pt
.vertex_element
[i
].src_offset
;
103 key
.element
[nr
].output_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
104 key
.element
[nr
].output_offset
= dst_offset
;
106 dst_offset
+= 4 * sizeof(float);
110 assert(dst_offset
<= vertex_size
);
112 key
.nr_elements
= nr
;
113 key
.output_stride
= vertex_size
;
116 if (!fetch
->translate
||
117 translate_key_compare(&fetch
->translate
->key
, &key
) != 0)
119 translate_key_sanitize(&key
);
120 fetch
->translate
= translate_cache_find(fetch
->cache
, &key
);
123 static struct vertex_header vh
= { 0, 1, 0, UNDEFINED_VERTEX_ID
, { .0f
, .0f
, .0f
, .0f
} };
124 fetch
->translate
->set_buffer(fetch
->translate
,
125 draw
->pt
.nr_vertex_buffers
,
131 fetch
->need_edgeflags
= ((draw
->rasterizer
->fill_cw
!= PIPE_POLYGON_MODE_FILL
||
132 draw
->rasterizer
->fill_ccw
!= PIPE_POLYGON_MODE_FILL
) &&
133 draw
->pt
.user
.edgeflag
);
139 void draw_pt_fetch_run( struct pt_fetch
*fetch
,
140 const unsigned *elts
,
144 struct draw_context
*draw
= fetch
->draw
;
145 struct translate
*translate
= fetch
->translate
;
148 for (i
= 0; i
< draw
->pt
.nr_vertex_buffers
; i
++) {
149 translate
->set_buffer(translate
,
151 ((char *)draw
->pt
.user
.vbuffer
[i
] +
152 draw
->pt
.vertex_buffer
[i
].buffer_offset
),
153 draw
->pt
.vertex_buffer
[i
].stride
);
156 translate
->run_elts( translate
,
161 /* Edgeflags are hard to fit into a translate program, populate
162 * them separately if required. In the setup above they are
163 * defaulted to one, so only need this if there is reason to change
166 if (fetch
->need_edgeflags
) {
167 for (i
= 0; i
< count
; i
++) {
168 struct vertex_header
*vh
= (struct vertex_header
*)(verts
+ i
* fetch
->vertex_size
);
169 vh
->edgeflag
= draw_pt_get_edgeflag( draw
, elts
[i
] );
175 void draw_pt_fetch_run_linear( struct pt_fetch
*fetch
,
180 struct draw_context
*draw
= fetch
->draw
;
181 struct translate
*translate
= fetch
->translate
;
184 for (i
= 0; i
< draw
->pt
.nr_vertex_buffers
; i
++) {
185 translate
->set_buffer(translate
,
187 ((char *)draw
->pt
.user
.vbuffer
[i
] +
188 draw
->pt
.vertex_buffer
[i
].buffer_offset
),
189 draw
->pt
.vertex_buffer
[i
].stride
);
192 translate
->run( translate
,
197 /* Edgeflags are hard to fit into a translate program, populate
198 * them separately if required. In the setup above they are
199 * defaulted to one, so only need this if there is reason to change
202 if (fetch
->need_edgeflags
) {
203 for (i
= 0; i
< count
; i
++) {
204 struct vertex_header
*vh
= (struct vertex_header
*)(verts
+ i
* fetch
->vertex_size
);
205 vh
->edgeflag
= draw_pt_get_edgeflag( draw
, start
+ i
);
211 struct pt_fetch
*draw_pt_fetch_create( struct draw_context
*draw
)
213 struct pt_fetch
*fetch
= CALLOC_STRUCT(pt_fetch
);
218 fetch
->cache
= translate_cache_create();
227 void draw_pt_fetch_destroy( struct pt_fetch
*fetch
)
230 translate_cache_destroy(fetch
->cache
);