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3 * Copyright 2009 VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
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11 * permit persons to whom the Software is furnished to do so, subject to
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14 * The above copyright notice and this permission notice (including the
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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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 unsigned disable
:1; /** Partially binned, disable this command */
83 unsigned opaque
:1; /** Is opaque */
89 const struct lp_rast_state
*state
;
93 struct lp_rast_plane
{
94 /* one-pixel sized trivial accept offsets for each plane */
97 /* one-pixel sized trivial reject offsets for each plane */
100 /* edge function values at minx,miny ?? */
108 * Rasterization information for a triangle known to be in this bin,
109 * plus inputs to run the shader:
110 * These fields are tile- and bin-independent.
111 * Objects of this type are put into the lp_setup_context::data buffer.
113 struct lp_rast_triangle
{
114 /* inputs for the shader */
115 struct lp_rast_shader_inputs inputs
;
121 struct lp_rast_plane plane
[8]; /* NOTE: may allocate fewer planes */
126 struct lp_rasterizer
*
127 lp_rast_create( unsigned num_threads
);
130 lp_rast_destroy( struct lp_rasterizer
* );
133 lp_rast_get_num_threads( struct lp_rasterizer
* );
136 lp_rast_queue_scene( struct lp_rasterizer
*rast
,
137 struct lp_scene
*scene
);
140 lp_rast_finish( struct lp_rasterizer
*rast
);
143 union lp_rast_cmd_arg
{
144 const struct lp_rast_shader_inputs
*shade_tile
;
146 const struct lp_rast_triangle
*tri
;
149 const struct lp_rast_state
*set_state
;
150 uint8_t clear_color
[4];
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( unsigned value
, unsigned mask
)
200 union lp_rast_cmd_arg arg
;
201 arg
.clear_zstencil
.value
= value
;
202 arg
.clear_zstencil
.mask
= mask
;
207 static INLINE
union lp_rast_cmd_arg
208 lp_rast_arg_query( struct llvmpipe_query
*pq
)
210 union lp_rast_cmd_arg arg
;
215 static INLINE
union lp_rast_cmd_arg
216 lp_rast_arg_null( void )
218 union lp_rast_cmd_arg arg
;
219 arg
.set_state
= NULL
;
226 * These get put into bins by the setup code and are called when
227 * the bins are executed.
229 #define LP_RAST_OP_CLEAR_COLOR 0x0
230 #define LP_RAST_OP_CLEAR_ZSTENCIL 0x1
231 #define LP_RAST_OP_TRIANGLE_1 0x2
232 #define LP_RAST_OP_TRIANGLE_2 0x3
233 #define LP_RAST_OP_TRIANGLE_3 0x4
234 #define LP_RAST_OP_TRIANGLE_4 0x5
235 #define LP_RAST_OP_TRIANGLE_5 0x6
236 #define LP_RAST_OP_TRIANGLE_6 0x7
237 #define LP_RAST_OP_TRIANGLE_7 0x8
238 #define LP_RAST_OP_TRIANGLE_8 0x9
239 #define LP_RAST_OP_TRIANGLE_3_4 0xa
240 #define LP_RAST_OP_TRIANGLE_3_16 0xb
241 #define LP_RAST_OP_TRIANGLE_4_16 0xc
242 #define LP_RAST_OP_SHADE_TILE 0xd
243 #define LP_RAST_OP_SHADE_TILE_OPAQUE 0xe
244 #define LP_RAST_OP_BEGIN_QUERY 0xf
245 #define LP_RAST_OP_END_QUERY 0x10
247 #define LP_RAST_OP_MAX 0x11
248 #define LP_RAST_OP_MASK 0xff
251 lp_debug_bins( struct lp_scene
*scene
);
253 lp_debug_draw_bins_by_cmd_length( struct lp_scene
*scene
);
255 lp_debug_draw_bins_by_coverage( struct lp_scene
*scene
);