1 /**************************************************************************
3 * Copyright 2009 VMware, Inc.
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,
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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 VMWARE 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 **************************************************************************/
29 * The rast code is concerned with rasterization of command bins.
30 * Each screen tile has a bin associated with it. To render the
31 * scene we iterate over the tile bins and execute the commands
33 * We'll do that with multiple threads...
40 #include "pipe/p_compiler.h"
49 /** For sub-pixel positioning */
51 #define FIXED_ONE (1<<FIXED_ORDER)
54 struct lp_rasterizer_task
;
58 * Rasterization state.
59 * Objects of this type are put into the shared data bin and pointed
60 * to by commands in the per-tile bins.
62 struct lp_rast_state
{
63 /* State for the shader. This also contains state which feeds into
64 * the fragment shader, such as blend color and alpha ref value.
66 struct lp_jit_context jit_context
;
68 /* The shader itself. Probably we also need to pass a pointer to
69 * the tile color/z/stencil data somehow
71 struct lp_fragment_shader_variant
*variant
;
76 * Coefficients necessary to run the shader at a given location.
77 * First coefficient is position.
78 * These pointers point into the bin data buffer.
80 struct lp_rast_shader_inputs
{
81 float facing
; /** Positive for front-facing, negative for back-facing */
82 boolean opaque
:1; /** Is opaque */
88 const struct lp_rast_state
*state
;
91 struct lp_rast_clearzs
{
92 unsigned clearzs_value
;
93 unsigned clearzs_mask
;
96 struct lp_rast_plane
{
97 /* one-pixel sized trivial accept offsets for each plane */
100 /* one-pixel sized trivial reject offsets for each plane */
103 /* edge function values at minx,miny ?? */
111 * Rasterization information for a triangle known to be in this bin,
112 * plus inputs to run the shader:
113 * These fields are tile- and bin-independent.
114 * Objects of this type are put into the lp_setup_context::data buffer.
116 struct lp_rast_triangle
{
117 /* inputs for the shader */
118 struct lp_rast_shader_inputs inputs
;
124 struct lp_rast_plane plane
[8]; /* NOTE: may allocate fewer planes */
129 struct lp_rasterizer
*
130 lp_rast_create( unsigned num_threads
);
133 lp_rast_destroy( struct lp_rasterizer
* );
136 lp_rast_get_num_threads( struct lp_rasterizer
* );
139 lp_rast_queue_scene( struct lp_rasterizer
*rast
,
140 struct lp_scene
*scene
);
143 lp_rast_finish( struct lp_rasterizer
*rast
);
146 union lp_rast_cmd_arg
{
147 const struct lp_rast_shader_inputs
*shade_tile
;
149 const struct lp_rast_triangle
*tri
;
152 const struct lp_rast_state
*set_state
;
153 uint8_t clear_color
[4];
154 const struct lp_rast_clearzs
*clear_zstencil
;
155 struct lp_fence
*fence
;
156 struct llvmpipe_query
*query_obj
;
160 /* Cast wrappers. Hopefully these compile to noops!
162 static INLINE
union lp_rast_cmd_arg
163 lp_rast_arg_inputs( const struct lp_rast_shader_inputs
*shade_tile
)
165 union lp_rast_cmd_arg arg
;
166 arg
.shade_tile
= shade_tile
;
170 static INLINE
union lp_rast_cmd_arg
171 lp_rast_arg_triangle( const struct lp_rast_triangle
*triangle
,
174 union lp_rast_cmd_arg arg
;
175 arg
.triangle
.tri
= triangle
;
176 arg
.triangle
.plane_mask
= plane_mask
;
180 static INLINE
union lp_rast_cmd_arg
181 lp_rast_arg_state( const struct lp_rast_state
*state
)
183 union lp_rast_cmd_arg arg
;
184 arg
.set_state
= state
;
188 static INLINE
union lp_rast_cmd_arg
189 lp_rast_arg_fence( struct lp_fence
*fence
)
191 union lp_rast_cmd_arg arg
;
197 static INLINE
union lp_rast_cmd_arg
198 lp_rast_arg_clearzs( const struct lp_rast_clearzs
*clearzs
)
200 union lp_rast_cmd_arg arg
;
201 arg
.clear_zstencil
= clearzs
;
205 static INLINE
union lp_rast_cmd_arg
206 lp_rast_arg_null( void )
208 union lp_rast_cmd_arg arg
;
209 arg
.set_state
= NULL
;
213 static INLINE
union lp_rast_cmd_arg
214 lp_rast_arg_query( struct llvmpipe_query
*pq
)
216 union lp_rast_cmd_arg arg
;
224 * These get put into bins by the setup code and are called when
225 * the bins are executed.
228 void lp_rast_clear_color( struct lp_rasterizer_task
*,
229 const union lp_rast_cmd_arg
);
231 void lp_rast_clear_zstencil( struct lp_rasterizer_task
*,
232 const union lp_rast_cmd_arg
);
234 void lp_rast_triangle_1( struct lp_rasterizer_task
*,
235 const union lp_rast_cmd_arg
);
236 void lp_rast_triangle_2( struct lp_rasterizer_task
*,
237 const union lp_rast_cmd_arg
);
238 void lp_rast_triangle_3( struct lp_rasterizer_task
*,
239 const union lp_rast_cmd_arg
);
240 void lp_rast_triangle_4( struct lp_rasterizer_task
*,
241 const union lp_rast_cmd_arg
);
242 void lp_rast_triangle_5( struct lp_rasterizer_task
*,
243 const union lp_rast_cmd_arg
);
244 void lp_rast_triangle_6( struct lp_rasterizer_task
*,
245 const union lp_rast_cmd_arg
);
246 void lp_rast_triangle_7( struct lp_rasterizer_task
*,
247 const union lp_rast_cmd_arg
);
248 void lp_rast_triangle_8( struct lp_rasterizer_task
*,
249 const union lp_rast_cmd_arg
);
251 void lp_rast_shade_tile( struct lp_rasterizer_task
*,
252 const union lp_rast_cmd_arg
);
254 void lp_rast_shade_tile_opaque( struct lp_rasterizer_task
*,
255 const union lp_rast_cmd_arg
);
257 void lp_rast_fence( struct lp_rasterizer_task
*,
258 const union lp_rast_cmd_arg
);
260 void lp_rast_store_linear_color( struct lp_rasterizer_task
*,
261 const union lp_rast_cmd_arg
);
264 void lp_rast_begin_query(struct lp_rasterizer_task
*,
265 const union lp_rast_cmd_arg
);
267 void lp_rast_restart_query(struct lp_rasterizer_task
*,
268 const union lp_rast_cmd_arg
);
270 void lp_rast_end_query(struct lp_rasterizer_task
*,
271 const union lp_rast_cmd_arg
);
274 lp_rast_triangle_3_16(struct lp_rasterizer_task
*task
,
275 const union lp_rast_cmd_arg arg
);