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: FIXME: reduce memory waste!
66 float a0
[PIPE_MAX_ATTRIBS
][4];
67 float dadx
[PIPE_MAX_ATTRIBS
][4];
68 float dady
[PIPE_MAX_ATTRIBS
][4];
72 /* Rasterization information for a triangle known to be in this bin,
73 * plus inputs to run the shader:
75 struct lp_rast_triangle
{
76 /* one-pixel sized trivial accept offsets for each plane */
81 /* one-pixel sized trivial reject offsets for each plane */
86 /* y deltas for vertex pairs */
91 /* x deltas for vertex pairs */
96 /* inputs for the shader */
97 struct lp_rast_shader_inputs
*inputs
;
102 boolean do_depth_stencil
;
104 unsigned depth_stencil
;
109 boolean do_depth_stencil
;
113 struct lp_rasterizer
*lp_rast_create( void );
115 void lp_rast_bind_surfaces( struct lp_rasterizer
*,
116 struct pipe_surface
*cbuf
,
117 struct pipe_surface
*zsbuf
,
118 const float *clear_color
,
120 unsigned clear_stencil
);
122 /* Begining of each tile:
124 void lp_rast_start_tile( struct lp_rasterizer
*,
130 union lp_rast_cmd_arg
{
131 const struct lp_rast_shader_inputs
*shade_tile
;
132 const struct lp_rast_triangle
*triangle
;
133 const struct lp_rast_state
*set_state
;
134 const uint8_t clear_color
[4];
135 unsigned clear_zstencil
;
139 /* Binnable Commands:
141 void lp_rast_clear_color( struct lp_rasterizer
*,
142 const union lp_rast_cmd_arg
*);
144 void lp_rast_clear_zstencil( struct lp_rasterizer
*,
145 const union lp_rast_cmd_arg
*);
147 void lp_rast_load_color( struct lp_rasterizer
*,
148 const union lp_rast_cmd_arg
*);
150 void lp_rast_load_zstencil( struct lp_rasterizer
*,
151 const union lp_rast_cmd_arg
*);
153 void lp_rast_set_state( struct lp_rasterizer
*,
154 const union lp_rast_cmd_arg
* );
156 void lp_rast_triangle( struct lp_rasterizer
*,
157 const union lp_rast_cmd_arg
* );
159 void lp_rast_shade_tile( struct lp_rasterizer
*,
160 const union lp_rast_cmd_arg
*,
161 const struct lp_rast_shader_inputs
*);
163 void lp_rast_store_color( struct lp_rasterizer
*,
164 const union lp_rast_cmd_arg
*);
166 void lp_rast_store_zstencil( struct lp_rasterizer
*,
167 const union lp_rast_cmd_arg
*);
173 void lp_rast_end_tile( struct lp_rasterizer
*rast
,
174 boolean write_depth
);
178 void lp_rast_destroy( struct lp_rasterizer
* );