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 **************************************************************************/
31 #include "pipe/p_compiler.h"
34 /* Initially create and program a single rasterizer directly. Later
35 * will want multiple of these, one or two per core. At that stage
36 * will probably pass command buffers into the rasterizers rather than
37 * individual function calls like this.
44 struct lp_rast_state
{
45 /* State for the shader:
47 struct lp_jit_context jc
;
49 /* The shader itself. Probably we also need to pass a pointer to
50 * the tile color/z/stencil data somehow:
52 lp_jit_frag_func shader
;
56 /* Coefficients necessary to run the shader at a given location:
58 struct lp_rast_shader_inputs
{
60 /* Current rasterizer state:
62 const struct lp_rast_state
*state
;
64 /* Attribute interpolation:
66 * First coefficient is position.
68 * FIXME: reduce memory waste!
70 float a0
[1 + PIPE_MAX_SHADER_INPUTS
][4];
71 float dadx
[1 + PIPE_MAX_SHADER_INPUTS
][4];
72 float dady
[1 + PIPE_MAX_SHADER_INPUTS
][4];
76 /* Rasterization information for a triangle known to be in this bin,
77 * plus inputs to run the shader:
79 struct lp_rast_triangle
{
80 /* one-pixel sized trivial accept offsets for each plane */
85 /* one-pixel sized trivial reject offsets for each plane */
90 /* y deltas for vertex pairs */
95 /* x deltas for vertex pairs */
100 /* XXX: these are only used inside lp_setup_tri.c, don't really
105 /* inputs for the shader */
106 struct lp_rast_shader_inputs inputs
;
111 struct lp_rasterizer
*lp_rast_create( void );
113 void lp_rast_begin( struct lp_rasterizer
*,
117 void lp_rast_bind_color( struct lp_rasterizer
*,
118 struct pipe_surface
*cbuf
,
119 boolean write_when_done
);
121 void lp_rast_bind_zstencil( struct lp_rasterizer
*,
122 struct pipe_surface
*zsbuf
,
123 boolean write_when_done
);
125 /* Begining of each tile:
127 void lp_rast_start_tile( struct lp_rasterizer
*,
133 union lp_rast_cmd_arg
{
134 const struct lp_rast_shader_inputs
*shade_tile
;
135 const struct lp_rast_triangle
*triangle
;
136 const struct lp_rast_state
*set_state
;
137 uint8_t clear_color
[4];
138 unsigned clear_zstencil
;
141 /* Cast wrappers. Hopefully these compile to noops!
143 static INLINE
const union lp_rast_cmd_arg
144 lp_rast_arg_inputs( const struct lp_rast_shader_inputs
*shade_tile
)
146 union lp_rast_cmd_arg arg
;
147 arg
.shade_tile
= shade_tile
;
151 static INLINE
const union lp_rast_cmd_arg
152 lp_rast_arg_triangle( const struct lp_rast_triangle
*triangle
)
154 union lp_rast_cmd_arg arg
;
155 arg
.triangle
= triangle
;
159 static INLINE
const union lp_rast_cmd_arg
160 lp_rast_arg_state( const struct lp_rast_state
*state
)
162 union lp_rast_cmd_arg arg
;
163 arg
.set_state
= state
;
167 static INLINE
const union lp_rast_cmd_arg
168 lp_rast_arg_null( void )
170 union lp_rast_cmd_arg arg
;
171 arg
.set_state
= NULL
;
179 /* Binnable Commands:
181 void lp_rast_clear_color( struct lp_rasterizer
*,
182 const union lp_rast_cmd_arg
);
184 void lp_rast_clear_zstencil( struct lp_rasterizer
*,
185 const union lp_rast_cmd_arg
);
187 void lp_rast_load_color( struct lp_rasterizer
*,
188 const union lp_rast_cmd_arg
);
190 void lp_rast_load_zstencil( struct lp_rasterizer
*,
191 const union lp_rast_cmd_arg
);
193 void lp_rast_set_state( struct lp_rasterizer
*,
194 const union lp_rast_cmd_arg
);
196 void lp_rast_triangle( struct lp_rasterizer
*,
197 const union lp_rast_cmd_arg
);
199 void lp_rast_shade_tile( struct lp_rasterizer
*,
200 const union lp_rast_cmd_arg
);
206 void lp_rast_end_tile( struct lp_rasterizer
*rast
);
210 void lp_rast_destroy( struct lp_rasterizer
* );