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 **************************************************************************/
33 #include "pipe/p_defines.h"
34 #include "util/u_debug.h"
40 static INLINE boolean
u_validate_pipe_prim( unsigned pipe_prim
, unsigned nr
)
45 case PIPE_PRIM_POINTS
:
51 case PIPE_PRIM_LINE_STRIP
:
52 case PIPE_PRIM_LINE_LOOP
:
55 case PIPE_PRIM_TRIANGLES
:
58 case PIPE_PRIM_TRIANGLE_STRIP
:
59 case PIPE_PRIM_TRIANGLE_FAN
:
60 case PIPE_PRIM_POLYGON
:
66 case PIPE_PRIM_QUAD_STRIP
:
78 static INLINE boolean
u_trim_pipe_prim( unsigned pipe_prim
, unsigned *nr
)
83 case PIPE_PRIM_POINTS
:
90 case PIPE_PRIM_LINE_STRIP
:
91 case PIPE_PRIM_LINE_LOOP
:
94 case PIPE_PRIM_TRIANGLES
:
98 case PIPE_PRIM_TRIANGLE_STRIP
:
99 case PIPE_PRIM_TRIANGLE_FAN
:
100 case PIPE_PRIM_POLYGON
:
103 case PIPE_PRIM_QUADS
:
107 case PIPE_PRIM_QUAD_STRIP
:
111 case PIPE_PRIM_LINES_ADJACENCY
:
115 case PIPE_PRIM_LINE_STRIP_ADJACENCY
:
118 case PIPE_PRIM_TRIANGLES_ADJACENCY
:
122 case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY
:
137 static INLINE
unsigned u_reduced_prim( unsigned pipe_prim
)
140 case PIPE_PRIM_POINTS
:
141 return PIPE_PRIM_POINTS
;
143 case PIPE_PRIM_LINES
:
144 case PIPE_PRIM_LINE_STRIP
:
145 case PIPE_PRIM_LINE_LOOP
:
146 return PIPE_PRIM_LINES
;
149 return PIPE_PRIM_TRIANGLES
;
153 static INLINE
unsigned
154 u_vertices_per_prim(int primitive
)
157 case PIPE_PRIM_POINTS
:
159 case PIPE_PRIM_LINES
:
160 case PIPE_PRIM_LINE_LOOP
:
161 case PIPE_PRIM_LINE_STRIP
:
163 case PIPE_PRIM_TRIANGLES
:
164 case PIPE_PRIM_TRIANGLE_STRIP
:
165 case PIPE_PRIM_TRIANGLE_FAN
:
167 case PIPE_PRIM_LINES_ADJACENCY
:
168 case PIPE_PRIM_LINE_STRIP_ADJACENCY
:
170 case PIPE_PRIM_TRIANGLES_ADJACENCY
:
171 case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY
:
174 /* following primitives should never be used
175 * with geometry shaders abd their size is
177 case PIPE_PRIM_POLYGON
:
178 case PIPE_PRIM_QUADS
:
179 case PIPE_PRIM_QUAD_STRIP
:
181 debug_printf("Unrecognized geometry shader primitive");
187 * Returns the number of decomposed primitives for the given
189 * Geometry shader is invoked once for each triangle in
190 * triangle strip, triangle fans and triangles and once
191 * for each line in line strip, line loop, lines.
193 static INLINE
unsigned
194 u_gs_prims_for_vertices(int primitive
, int vertices
)
197 case PIPE_PRIM_POINTS
:
199 case PIPE_PRIM_LINES
:
201 case PIPE_PRIM_LINE_LOOP
:
203 case PIPE_PRIM_LINE_STRIP
:
205 case PIPE_PRIM_TRIANGLES
:
207 case PIPE_PRIM_TRIANGLE_STRIP
:
209 case PIPE_PRIM_TRIANGLE_FAN
:
211 case PIPE_PRIM_LINES_ADJACENCY
:
213 case PIPE_PRIM_LINE_STRIP_ADJACENCY
:
215 case PIPE_PRIM_TRIANGLES_ADJACENCY
:
217 case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY
:
220 /* following primitives should never be used
221 * with geometry shaders abd their size is
223 case PIPE_PRIM_POLYGON
:
224 case PIPE_PRIM_QUADS
:
225 case PIPE_PRIM_QUAD_STRIP
:
227 debug_printf("Unrecognized geometry shader primitive");
232 const char *u_prim_name( unsigned pipe_prim
);