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 **************************************************************************/
28 #ifndef LP_RAST_PRIV_H
29 #define LP_RAST_PRIV_H
31 #include "os/os_thread.h"
32 #include "util/u_format.h"
33 #include "gallivm/lp_bld_debug.h"
36 #include "lp_texture.h"
37 #include "lp_tile_soa.h"
40 #define MAX_THREADS 8 /* XXX probably temporary here */
47 * Per-thread rasterization state
49 struct lp_rasterizer_task
51 unsigned x
, y
; /**< Pos of this tile in framebuffer, in pixels */
53 uint8_t *color_tiles
[PIPE_MAX_COLOR_BUFS
];
56 const struct lp_rast_state
*current_state
;
59 struct lp_rasterizer
*rast
;
62 unsigned thread_index
;
64 pipe_semaphore work_ready
;
65 pipe_semaphore work_done
;
70 * This is the state required while rasterizing tiles.
71 * Note that this contains per-thread information too.
72 * The tile size is TILE_SIZE x TILE_SIZE pixels.
82 unsigned tiles_per_row
;
84 enum pipe_format format
;
85 } cbuf
[PIPE_MAX_COLOR_BUFS
];
100 /** The incoming queue of scenes ready to rasterize */
101 struct lp_scene_queue
*full_scenes
;
104 * The outgoing queue of processed scenes to return to setup module
106 * XXX: while scenes are per-context but the rasterizer is
107 * (potentially) shared, these empty scenes should be returned to
108 * the context which created them rather than retained here.
110 struct lp_scene_queue
*empty_scenes
;
112 /** The scene currently being rasterized by the threads */
113 struct lp_scene
*curr_scene
;
115 /** A task object for each rasterization thread */
116 struct lp_rasterizer_task tasks
[MAX_THREADS
];
118 unsigned num_threads
;
119 pipe_thread threads
[MAX_THREADS
];
121 /** For synchronizing the rasterization threads */
122 pipe_barrier barrier
;
126 void lp_rast_shade_quads( struct lp_rasterizer_task
*task
,
127 const struct lp_rast_shader_inputs
*inputs
,
128 unsigned x
, unsigned y
,
129 int32_t c1
, int32_t c2
, int32_t c3
);
133 * Get the pointer to a 4x4 depth/stencil block.
134 * We'll map the z/stencil buffer on demand here.
135 * Note that this may be called even when there's no z/stencil buffer - return
137 * \param x, y location of 4x4 block in window coords
140 lp_rast_get_depth_block_pointer(const struct lp_rasterizer
*rast
,
141 unsigned x
, unsigned y
)
145 assert((x
% TILE_VECTOR_WIDTH
) == 0);
146 assert((y
% TILE_VECTOR_HEIGHT
) == 0);
148 assert(rast
->zsbuf
.map
|| !rast
->curr_scene
->fb
.zsbuf
);
150 if (!rast
->zsbuf
.map
)
153 depth
= (rast
->zsbuf
.map
+
154 rast
->zsbuf
.stride
* y
+
155 rast
->zsbuf
.blocksize
* x
* TILE_VECTOR_HEIGHT
);
157 assert(lp_check_alignment(depth
, 16));
163 * Get the pointer to a 4x4 color block (within a 64x64 tile).
164 * We'll map the color buffer on demand here.
165 * Note that this may be called even when there's no color buffers - return
167 * \param x, y location of 4x4 block in window coords
169 static INLINE
uint8_t *
170 lp_rast_get_color_block_pointer(struct lp_rasterizer_task
*task
,
171 unsigned buf
, unsigned x
, unsigned y
)
173 unsigned px
, py
, pixel_offset
;
176 assert((x
% TILE_VECTOR_WIDTH
) == 0);
177 assert((y
% TILE_VECTOR_HEIGHT
) == 0);
179 color
= task
->color_tiles
[buf
];
184 pixel_offset
= tile_pixel_offset(px
, py
, 0);
186 color
= color
+ pixel_offset
;
188 assert(lp_check_alignment(color
, 16));
195 * Shade all pixels in a 4x4 block. The fragment code omits the
196 * triangle in/out tests.
197 * \param x, y location of 4x4 block in window coords
200 lp_rast_shade_quads_all( struct lp_rasterizer_task
*task
,
201 const struct lp_rast_shader_inputs
*inputs
,
202 unsigned x
, unsigned y
)
204 struct lp_rasterizer
*rast
= task
->rast
;
205 const struct lp_rast_state
*state
= task
->current_state
;
206 uint8_t *color
[PIPE_MAX_COLOR_BUFS
];
211 for (i
= 0; i
< rast
->state
.nr_cbufs
; i
++)
212 color
[i
] = lp_rast_get_color_block_pointer(task
, i
, x
, y
);
214 depth
= lp_rast_get_depth_block_pointer(rast
, x
, y
);
216 /* run shader on 4x4 block */
217 state
->jit_function
[RAST_WHOLE
]( &state
->jit_context
,
225 INT_MIN
, INT_MIN
, INT_MIN
,