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,
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 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 unsigned frontfacing
:1; /** True for front-facing */
82 unsigned disable
:1; /** Partially binned, disable this command */
83 unsigned opaque
:1; /** Is opaque */
84 unsigned pad0
:29; /* wasted space */
85 unsigned stride
; /* how much to advance data between a0, dadx, dady */
86 unsigned pad2
; /* wasted space */
87 unsigned pad3
; /* wasted space */
88 /* followed by a0, dadx, dady and planes[] */
91 /* Note: the order of these values is important as they are loaded by
92 * sse code in rasterization:
94 struct lp_rast_plane
{
95 /* edge function values at minx,miny ?? */
101 /* one-pixel sized trivial reject offsets for each plane */
106 * Rasterization information for a triangle known to be in this bin,
107 * plus inputs to run the shader:
108 * These fields are tile- and bin-independent.
109 * Objects of this type are put into the lp_setup_context::data buffer.
111 struct lp_rast_triangle
{
118 /* inputs for the shader */
119 struct lp_rast_shader_inputs inputs
;
120 /* planes are also allocated here */
124 #define GET_A0(inputs) ((float (*)[4])((inputs)+1))
125 #define GET_DADX(inputs) ((float (*)[4])((char *)((inputs) + 1) + (inputs)->stride))
126 #define GET_DADY(inputs) ((float (*)[4])((char *)((inputs) + 1) + 2 * (inputs)->stride))
127 #define GET_PLANES(tri) ((struct lp_rast_plane *)((char *)(&(tri)->inputs + 1) + 3 * (tri)->inputs.stride))
131 struct lp_rasterizer
*
132 lp_rast_create( unsigned num_threads
);
135 lp_rast_destroy( struct lp_rasterizer
* );
138 lp_rast_get_num_threads( struct lp_rasterizer
* );
141 lp_rast_queue_scene( struct lp_rasterizer
*rast
,
142 struct lp_scene
*scene
);
145 lp_rast_finish( struct lp_rasterizer
*rast
);
148 union lp_rast_cmd_arg
{
149 const struct lp_rast_shader_inputs
*shade_tile
;
151 const struct lp_rast_triangle
*tri
;
154 const struct lp_rast_state
*set_state
;
155 float clear_color
[4];
160 const struct lp_rast_state
*state
;
161 struct lp_fence
*fence
;
162 struct llvmpipe_query
*query_obj
;
166 /* Cast wrappers. Hopefully these compile to noops!
168 static INLINE
union lp_rast_cmd_arg
169 lp_rast_arg_inputs( const struct lp_rast_shader_inputs
*shade_tile
)
171 union lp_rast_cmd_arg arg
;
172 arg
.shade_tile
= shade_tile
;
176 static INLINE
union lp_rast_cmd_arg
177 lp_rast_arg_triangle( const struct lp_rast_triangle
*triangle
,
180 union lp_rast_cmd_arg arg
;
181 arg
.triangle
.tri
= triangle
;
182 arg
.triangle
.plane_mask
= plane_mask
;
187 * Build argument for a contained triangle.
189 * All planes are enabled, so instead of the plane mask we pass the upper
190 * left coordinates of the a block that fully encloses the triangle.
192 static INLINE
union lp_rast_cmd_arg
193 lp_rast_arg_triangle_contained( const struct lp_rast_triangle
*triangle
,
194 unsigned x
, unsigned y
)
196 union lp_rast_cmd_arg arg
;
197 arg
.triangle
.tri
= triangle
;
198 arg
.triangle
.plane_mask
= x
| (y
<< 8);
202 static INLINE
union lp_rast_cmd_arg
203 lp_rast_arg_state( const struct lp_rast_state
*state
)
205 union lp_rast_cmd_arg arg
;
206 arg
.set_state
= state
;
210 static INLINE
union lp_rast_cmd_arg
211 lp_rast_arg_fence( struct lp_fence
*fence
)
213 union lp_rast_cmd_arg arg
;
219 static INLINE
union lp_rast_cmd_arg
220 lp_rast_arg_clearzs( unsigned value
, unsigned mask
)
222 union lp_rast_cmd_arg arg
;
223 arg
.clear_zstencil
.value
= value
;
224 arg
.clear_zstencil
.mask
= mask
;
229 static INLINE
union lp_rast_cmd_arg
230 lp_rast_arg_query( struct llvmpipe_query
*pq
)
232 union lp_rast_cmd_arg arg
;
237 static INLINE
union lp_rast_cmd_arg
238 lp_rast_arg_null( void )
240 union lp_rast_cmd_arg arg
;
241 arg
.set_state
= NULL
;
248 * These get put into bins by the setup code and are called when
249 * the bins are executed.
251 #define LP_RAST_OP_CLEAR_COLOR 0x0
252 #define LP_RAST_OP_CLEAR_ZSTENCIL 0x1
253 #define LP_RAST_OP_TRIANGLE_1 0x2
254 #define LP_RAST_OP_TRIANGLE_2 0x3
255 #define LP_RAST_OP_TRIANGLE_3 0x4
256 #define LP_RAST_OP_TRIANGLE_4 0x5
257 #define LP_RAST_OP_TRIANGLE_5 0x6
258 #define LP_RAST_OP_TRIANGLE_6 0x7
259 #define LP_RAST_OP_TRIANGLE_7 0x8
260 #define LP_RAST_OP_TRIANGLE_8 0x9
261 #define LP_RAST_OP_TRIANGLE_3_4 0xa
262 #define LP_RAST_OP_TRIANGLE_3_16 0xb
263 #define LP_RAST_OP_TRIANGLE_4_16 0xc
264 #define LP_RAST_OP_SHADE_TILE 0xd
265 #define LP_RAST_OP_SHADE_TILE_OPAQUE 0xe
266 #define LP_RAST_OP_BEGIN_QUERY 0xf
267 #define LP_RAST_OP_END_QUERY 0x10
268 #define LP_RAST_OP_SET_STATE 0x11
270 #define LP_RAST_OP_MAX 0x12
271 #define LP_RAST_OP_MASK 0xff
274 lp_debug_bins( struct lp_scene
*scene
);
276 lp_debug_draw_bins_by_cmd_length( struct lp_scene
*scene
);
278 lp_debug_draw_bins_by_coverage( struct lp_scene
*scene
);