1 /**************************************************************************
3 * Copyright 2007 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 #include "pipe/p_defines.h"
29 #include "util/u_memory.h"
30 #include "lp_context.h"
33 #include "draw/draw_context.h"
35 struct lp_rast_state
{
36 struct pipe_rasterizer_state lp_state
;
37 struct pipe_rasterizer_state draw_state
;
40 /* State which might be handled in either the draw module or locally.
41 * This function is used to turn that state off in one of the two
45 clear_flags(struct pipe_rasterizer_state
*rast
)
47 rast
->light_twoside
= 0;
49 rast
->offset_line
= 0;
50 rast
->offset_point
= 0;
51 rast
->offset_units
= 0.0f
;
52 rast
->offset_scale
= 0.0f
;
58 llvmpipe_create_rasterizer_state(struct pipe_context
*pipe
,
59 const struct pipe_rasterizer_state
*rast
)
61 boolean need_pipeline
;
63 /* Partition rasterizer state into what we want the draw module to
64 * handle, and what we'll look after ourselves.
66 struct lp_rast_state
*state
= MALLOC_STRUCT(lp_rast_state
);
70 memcpy(&state
->draw_state
, rast
, sizeof *rast
);
71 memcpy(&state
->lp_state
, rast
, sizeof *rast
);
73 /* We rely on draw module to do unfilled polyons, AA lines and
76 * Over time, reduce this list of conditions, and expand the list
77 * of flags which get cleared in clear_flags().
79 need_pipeline
= (rast
->fill_front
!= PIPE_POLYGON_MODE_FILL
||
80 rast
->fill_back
!= PIPE_POLYGON_MODE_FILL
||
83 rast
->line_stipple_enable
||
84 rast
->poly_stipple_enable
);
86 /* If not using the pipeline, clear out the flags which we can
87 * handle ourselves. If we *are* using the pipeline, do everything
88 * on the pipeline and clear those flags on our internal copy of
92 clear_flags(&state
->lp_state
);
94 clear_flags(&state
->draw_state
);
102 llvmpipe_bind_rasterizer_state(struct pipe_context
*pipe
, void *handle
)
104 struct llvmpipe_context
*llvmpipe
= llvmpipe_context(pipe
);
105 const struct lp_rast_state
*state
=
106 (const struct lp_rast_state
*) handle
;
109 llvmpipe
->rasterizer
= &state
->lp_state
;
110 draw_set_rasterizer_state(llvmpipe
->draw
, &state
->draw_state
, handle
);
112 /* XXX: just pass lp_state directly to setup.
114 lp_setup_set_triangle_state( llvmpipe
->setup
,
115 state
->lp_state
.cull_face
,
116 state
->lp_state
.front_ccw
,
117 state
->lp_state
.scissor
,
118 state
->lp_state
.half_pixel_center
,
119 state
->lp_state
.bottom_edge_rule
,
120 state
->lp_state
.multisample
);
121 lp_setup_set_flatshade_first( llvmpipe
->setup
,
122 state
->lp_state
.flatshade_first
);
123 lp_setup_set_line_state( llvmpipe
->setup
,
124 state
->lp_state
.line_width
);
125 lp_setup_set_point_state( llvmpipe
->setup
,
126 state
->lp_state
.point_size
,
127 state
->lp_state
.point_size_per_vertex
,
128 state
->lp_state
.sprite_coord_enable
,
129 state
->lp_state
.sprite_coord_mode
);
132 llvmpipe
->rasterizer
= NULL
;
133 draw_set_rasterizer_state(llvmpipe
->draw
, NULL
, handle
);
136 llvmpipe
->dirty
|= LP_NEW_RASTERIZER
;
141 llvmpipe_delete_rasterizer_state(struct pipe_context
*pipe
,
150 llvmpipe_init_rasterizer_funcs(struct llvmpipe_context
*llvmpipe
)
152 llvmpipe
->pipe
.create_rasterizer_state
= llvmpipe_create_rasterizer_state
;
153 llvmpipe
->pipe
.bind_rasterizer_state
= llvmpipe_bind_rasterizer_state
;
154 llvmpipe
->pipe
.delete_rasterizer_state
= llvmpipe_delete_rasterizer_state
;