1 /**************************************************************************
3 * Copyright 2007 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 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
33 #include "draw/draw_private.h"
34 #include "draw/draw_pipe.h"
38 boolean
draw_pipeline_init( struct draw_context
*draw
)
40 /* create pipeline stages */
41 draw
->pipeline
.wide_line
= draw_wide_line_stage( draw
);
42 draw
->pipeline
.wide_point
= draw_wide_point_stage( draw
);
43 draw
->pipeline
.stipple
= draw_stipple_stage( draw
);
44 draw
->pipeline
.unfilled
= draw_unfilled_stage( draw
);
45 draw
->pipeline
.twoside
= draw_twoside_stage( draw
);
46 draw
->pipeline
.offset
= draw_offset_stage( draw
);
47 draw
->pipeline
.clip
= draw_clip_stage( draw
);
48 draw
->pipeline
.flatshade
= draw_flatshade_stage( draw
);
49 draw
->pipeline
.cull
= draw_cull_stage( draw
);
50 draw
->pipeline
.validate
= draw_validate_stage( draw
);
51 draw
->pipeline
.first
= draw
->pipeline
.validate
;
53 if (!draw
->pipeline
.wide_line
||
54 !draw
->pipeline
.wide_point
||
55 !draw
->pipeline
.stipple
||
56 !draw
->pipeline
.unfilled
||
57 !draw
->pipeline
.twoside
||
58 !draw
->pipeline
.offset
||
59 !draw
->pipeline
.clip
||
60 !draw
->pipeline
.flatshade
||
61 !draw
->pipeline
.cull
||
62 !draw
->pipeline
.validate
)
65 /* these defaults are oriented toward the needs of softpipe */
66 draw
->pipeline
.wide_point_threshold
= 1000000.0; /* infinity */
67 draw
->pipeline
.wide_line_threshold
= 1.0;
68 draw
->pipeline
.line_stipple
= TRUE
;
69 draw
->pipeline
.point_sprite
= TRUE
;
75 void draw_pipeline_destroy( struct draw_context
*draw
)
77 if (draw
->pipeline
.wide_line
)
78 draw
->pipeline
.wide_line
->destroy( draw
->pipeline
.wide_line
);
79 if (draw
->pipeline
.wide_point
)
80 draw
->pipeline
.wide_point
->destroy( draw
->pipeline
.wide_point
);
81 if (draw
->pipeline
.stipple
)
82 draw
->pipeline
.stipple
->destroy( draw
->pipeline
.stipple
);
83 if (draw
->pipeline
.unfilled
)
84 draw
->pipeline
.unfilled
->destroy( draw
->pipeline
.unfilled
);
85 if (draw
->pipeline
.twoside
)
86 draw
->pipeline
.twoside
->destroy( draw
->pipeline
.twoside
);
87 if (draw
->pipeline
.offset
)
88 draw
->pipeline
.offset
->destroy( draw
->pipeline
.offset
);
89 if (draw
->pipeline
.clip
)
90 draw
->pipeline
.clip
->destroy( draw
->pipeline
.clip
);
91 if (draw
->pipeline
.flatshade
)
92 draw
->pipeline
.flatshade
->destroy( draw
->pipeline
.flatshade
);
93 if (draw
->pipeline
.cull
)
94 draw
->pipeline
.cull
->destroy( draw
->pipeline
.cull
);
95 if (draw
->pipeline
.validate
)
96 draw
->pipeline
.validate
->destroy( draw
->pipeline
.validate
);
97 if (draw
->pipeline
.aaline
)
98 draw
->pipeline
.aaline
->destroy( draw
->pipeline
.aaline
);
99 if (draw
->pipeline
.aapoint
)
100 draw
->pipeline
.aapoint
->destroy( draw
->pipeline
.aapoint
);
101 if (draw
->pipeline
.pstipple
)
102 draw
->pipeline
.pstipple
->destroy( draw
->pipeline
.pstipple
);
103 if (draw
->pipeline
.rasterize
)
104 draw
->pipeline
.rasterize
->destroy( draw
->pipeline
.rasterize
);
113 static void do_point( struct draw_context
*draw
,
116 struct prim_header prim
;
120 prim
.v
[0] = (struct vertex_header
*)v0
;
122 draw
->pipeline
.first
->point( draw
->pipeline
.first
, &prim
);
126 static void do_line( struct draw_context
*draw
,
131 struct prim_header prim
;
135 prim
.v
[0] = (struct vertex_header
*)v0
;
136 prim
.v
[1] = (struct vertex_header
*)v1
;
138 draw
->pipeline
.first
->line( draw
->pipeline
.first
, &prim
);
142 static void do_triangle( struct draw_context
*draw
,
148 struct prim_header prim
;
150 prim
.v
[0] = (struct vertex_header
*)v0
;
151 prim
.v
[1] = (struct vertex_header
*)v1
;
152 prim
.v
[2] = (struct vertex_header
*)v2
;
156 draw
->pipeline
.first
->tri( draw
->pipeline
.first
, &prim
);
161 #define QUAD(i0,i1,i2,i3) \
163 ( DRAW_PIPE_RESET_STIPPLE | \
164 DRAW_PIPE_EDGE_FLAG_0 | \
165 DRAW_PIPE_EDGE_FLAG_2 ), \
166 verts + stride * elts[i0], \
167 verts + stride * elts[i1], \
168 verts + stride * elts[i3]); \
170 ( DRAW_PIPE_EDGE_FLAG_0 | \
171 DRAW_PIPE_EDGE_FLAG_1 ), \
172 verts + stride * elts[i1], \
173 verts + stride * elts[i2], \
174 verts + stride * elts[i3])
176 #define TRIANGLE(flags,i0,i1,i2) \
178 elts[i0], /* flags */ \
179 verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
180 verts + stride * elts[i1], \
181 verts + stride * elts[i2])
183 #define LINE(flags,i0,i1) \
186 verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
187 verts + stride * elts[i1])
191 verts + stride * elts[i0] )
193 #define FUNC pipe_run
195 struct draw_context *draw, \
197 struct vertex_header *vertices, \
202 char *verts = (char *)vertices; \
203 boolean flatfirst = (draw->rasterizer->flatshade && \
204 draw->rasterizer->flatshade_first); \
210 #include "draw_pt_decompose.h"
216 /* Code to run the pipeline on a fairly arbitary collection of vertices.
218 * Vertex headers must be pre-initialized with the
219 * UNDEFINED_VERTEX_ID, this code will cause that id to become
220 * overwritten, so it may have to be reset if there is the intention
221 * to reuse the vertices.
223 * This code provides a callback to reset the vertex id's which the
224 * draw_vbuf.c code uses when it has to perform a flush.
226 void draw_pipeline_run( struct draw_context
*draw
,
228 struct vertex_header
*vertices
,
229 unsigned vertex_count
,
234 char *verts
= (char *)vertices
;
236 draw
->pipeline
.verts
= verts
;
237 draw
->pipeline
.vertex_stride
= stride
;
238 draw
->pipeline
.vertex_count
= vertex_count
;
240 pipe_run(draw
, prim
, vertices
, stride
, elts
, count
);
242 draw
->pipeline
.verts
= NULL
;
243 draw
->pipeline
.vertex_count
= 0;
246 #define QUAD(i0,i1,i2,i3) \
248 ( DRAW_PIPE_RESET_STIPPLE | \
249 DRAW_PIPE_EDGE_FLAG_0 | \
250 DRAW_PIPE_EDGE_FLAG_2 ), \
251 verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
252 verts + stride * (i1), \
253 verts + stride * (i3)); \
255 ( DRAW_PIPE_EDGE_FLAG_0 | \
256 DRAW_PIPE_EDGE_FLAG_1 ), \
257 verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK), \
258 verts + stride * (i2), \
259 verts + stride * (i3))
261 #define TRIANGLE(flags,i0,i1,i2) \
264 verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
265 verts + stride * (i1), \
266 verts + stride * (i2))
268 #define LINE(flags,i0,i1) \
271 verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
272 verts + stride * (i1))
276 verts + stride * i0 )
278 #define FUNC pipe_run_linear
280 struct draw_context *draw, \
282 struct vertex_header *vertices, \
286 char *verts = (char *)vertices; \
287 boolean flatfirst = (draw->rasterizer->flatshade && \
288 draw->rasterizer->flatshade_first); \
294 #include "draw_pt_decompose.h"
296 void draw_pipeline_run_linear( struct draw_context
*draw
,
298 struct vertex_header
*vertices
,
302 char *verts
= (char *)vertices
;
303 draw
->pipeline
.verts
= verts
;
304 draw
->pipeline
.vertex_stride
= stride
;
305 draw
->pipeline
.vertex_count
= count
;
307 pipe_run_linear(draw
, prim
, vertices
, stride
, count
);
309 draw
->pipeline
.verts
= NULL
;
310 draw
->pipeline
.vertex_count
= 0;
314 void draw_pipeline_flush( struct draw_context
*draw
,
317 draw
->pipeline
.first
->flush( draw
->pipeline
.first
, flags
);
318 draw
->pipeline
.first
= draw
->pipeline
.validate
;