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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"
44 /* Initially create and program a single rasterizer directly. Later
45 * will want multiple of these, one or two per core. At that stage
46 * will probably pass command buffers into the rasterizers rather than
47 * individual function calls like this.
55 #define FIXED_ONE (1<<FIXED_ORDER)
59 * Rasterization state.
60 * Objects of this type are put into the shared data bin and pointed
61 * to by commands in the per-tile bins.
63 struct lp_rast_state
{
64 /* State for the shader:
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 lp_jit_frag_func jit_function
;
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
{
88 * Rasterization information for a triangle known to be in this bin,
89 * plus inputs to run the shader:
90 * These fields are tile- and bin-independent.
91 * Objects of this type are put into the setup_context::data buffer.
93 struct lp_rast_triangle
{
94 /* bounding box of tri (in pixels) */
100 /* one-pixel sized trivial accept offsets for each plane */
105 /* one-pixel sized trivial reject offsets for each plane */
110 /* y deltas for vertex pairs (in fixed pt) */
115 /* x deltas for vertex pairs (in fixed pt) */
120 /* edge function values at minx,miny ?? */
127 /* inputs for the shader */
128 struct lp_rast_shader_inputs inputs
;
133 struct lp_rasterizer
*lp_rast_create( struct pipe_screen
*screen
);
135 void lp_rast_destroy( struct lp_rasterizer
* );
137 void lp_rasterize_bins( struct lp_rasterizer
*rast
,
138 struct lp_bins
*bins
,
139 unsigned tiles_x
, unsigned tiles_y
,
140 const struct pipe_framebuffer_state
*fb
,
145 union lp_rast_cmd_arg
{
146 const struct lp_rast_shader_inputs
*shade_tile
;
147 const struct lp_rast_triangle
*triangle
;
148 const struct lp_rast_state
*set_state
;
149 uint8_t clear_color
[4];
150 unsigned clear_zstencil
;
154 /* Cast wrappers. Hopefully these compile to noops!
156 static INLINE
const union lp_rast_cmd_arg
157 lp_rast_arg_inputs( const struct lp_rast_shader_inputs
*shade_tile
)
159 union lp_rast_cmd_arg arg
;
160 arg
.shade_tile
= shade_tile
;
164 static INLINE
const union lp_rast_cmd_arg
165 lp_rast_arg_triangle( const struct lp_rast_triangle
*triangle
)
167 union lp_rast_cmd_arg arg
;
168 arg
.triangle
= triangle
;
172 static INLINE
const union lp_rast_cmd_arg
173 lp_rast_arg_state( const struct lp_rast_state
*state
)
175 union lp_rast_cmd_arg arg
;
176 arg
.set_state
= state
;
180 static INLINE
const union lp_rast_cmd_arg
181 lp_rast_arg_null( void )
183 union lp_rast_cmd_arg arg
;
184 arg
.set_state
= NULL
;
192 * These get put into bins by the setup code and are called when
193 * the bins are executed.
196 void lp_rast_clear_color( struct lp_rasterizer
*,
197 const union lp_rast_cmd_arg
);
199 void lp_rast_clear_zstencil( struct lp_rasterizer
*,
200 const union lp_rast_cmd_arg
);
202 void lp_rast_load_color( struct lp_rasterizer
*,
203 const union lp_rast_cmd_arg
);
205 void lp_rast_load_zstencil( struct lp_rasterizer
*,
206 const union lp_rast_cmd_arg
);
208 void lp_rast_set_state( struct lp_rasterizer
*,
209 const union lp_rast_cmd_arg
);
211 void lp_rast_triangle( struct lp_rasterizer
*,
212 const union lp_rast_cmd_arg
);
214 void lp_rast_shade_tile( struct lp_rasterizer
*,
215 const union lp_rast_cmd_arg
);