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3 * Copyright 2009 VMware, Inc.
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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"
49 /** For sub-pixel positioning */
51 #define FIXED_ONE (1<<FIXED_ORDER)
54 struct lp_rasterizer_task;
58 * Rasterization state.
59 * Objects of this type are put into the shared data bin and pointed
60 * to by commands in the per-tile bins.
62 struct lp_rast_state {
63 /* State for the shader. This also contains state which feeds into
64 * the fragment shader, such as blend color and alpha ref value.
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 struct lp_fragment_shader_variant *variant;
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 {
81 unsigned frontfacing:1; /** True for front-facing */
82 unsigned disable:1; /** Partially binned, disable this command */
83 unsigned opaque:1; /** Is opaque */
84 unsigned pad0:29; /* wasted space */
85 unsigned stride; /* how much to advance data between a0, dadx, dady */
86 unsigned pad2; /* wasted space */
87 unsigned pad3; /* wasted space */
88 /* followed by a0, dadx, dady and planes[] */
91 /* Note: the order of these values is important as they are loaded by
92 * sse code in rasterization:
94 struct lp_rast_plane {
95 /* edge function values at minx,miny ?? */
101 /* one-pixel sized trivial reject offsets for each plane */
106 * Rasterization information for a triangle known to be in this bin,
107 * plus inputs to run the shader:
108 * These fields are tile- and bin-independent.
109 * Objects of this type are put into the lp_setup_context::data buffer.
111 struct lp_rast_triangle {
118 /* inputs for the shader */
119 struct lp_rast_shader_inputs inputs;
120 /* planes are also allocated here */
124 #define GET_A0(inputs) ((float (*)[4])((inputs)+1))
125 #define GET_DADX(inputs) ((float (*)[4])((char *)((inputs) + 1) + (inputs)->stride))
126 #define GET_DADY(inputs) ((float (*)[4])((char *)((inputs) + 1) + 2 * (inputs)->stride))
127 #define GET_PLANES(tri) ((struct lp_rast_plane *)((char *)(&(tri)->inputs + 1) + 3 * (tri)->inputs.stride))
131 struct lp_rasterizer *
132 lp_rast_create( unsigned num_threads );
135 lp_rast_destroy( struct lp_rasterizer * );
138 lp_rast_get_num_threads( struct lp_rasterizer * );
141 lp_rast_queue_scene( struct lp_rasterizer *rast,
142 struct lp_scene *scene );
145 lp_rast_finish( struct lp_rasterizer *rast );
148 union lp_rast_cmd_arg {
149 const struct lp_rast_shader_inputs *shade_tile;
151 const struct lp_rast_triangle *tri;
154 const struct lp_rast_state *set_state;
155 uint8_t clear_color[4];
160 const struct lp_rast_state *state;
161 struct lp_fence *fence;
162 struct llvmpipe_query *query_obj;
166 /* Cast wrappers. Hopefully these compile to noops!
168 static INLINE union lp_rast_cmd_arg
169 lp_rast_arg_inputs( const struct lp_rast_shader_inputs *shade_tile )
171 union lp_rast_cmd_arg arg;
172 arg.shade_tile = shade_tile;
176 static INLINE union lp_rast_cmd_arg
177 lp_rast_arg_triangle( const struct lp_rast_triangle *triangle,
180 union lp_rast_cmd_arg arg;
181 arg.triangle.tri = triangle;
182 arg.triangle.plane_mask = plane_mask;
186 static INLINE union lp_rast_cmd_arg
187 lp_rast_arg_state( const struct lp_rast_state *state )
189 union lp_rast_cmd_arg arg;
190 arg.set_state = state;
194 static INLINE union lp_rast_cmd_arg
195 lp_rast_arg_fence( struct lp_fence *fence )
197 union lp_rast_cmd_arg arg;
203 static INLINE union lp_rast_cmd_arg
204 lp_rast_arg_clearzs( unsigned value, unsigned mask )
206 union lp_rast_cmd_arg arg;
207 arg.clear_zstencil.value = value;
208 arg.clear_zstencil.mask = mask;
213 static INLINE union lp_rast_cmd_arg
214 lp_rast_arg_query( struct llvmpipe_query *pq )
216 union lp_rast_cmd_arg arg;
221 static INLINE union lp_rast_cmd_arg
222 lp_rast_arg_null( void )
224 union lp_rast_cmd_arg arg;
225 arg.set_state = NULL;
232 * These get put into bins by the setup code and are called when
233 * the bins are executed.
235 #define LP_RAST_OP_CLEAR_COLOR 0x0
236 #define LP_RAST_OP_CLEAR_ZSTENCIL 0x1
237 #define LP_RAST_OP_TRIANGLE_1 0x2
238 #define LP_RAST_OP_TRIANGLE_2 0x3
239 #define LP_RAST_OP_TRIANGLE_3 0x4
240 #define LP_RAST_OP_TRIANGLE_4 0x5
241 #define LP_RAST_OP_TRIANGLE_5 0x6
242 #define LP_RAST_OP_TRIANGLE_6 0x7
243 #define LP_RAST_OP_TRIANGLE_7 0x8
244 #define LP_RAST_OP_TRIANGLE_8 0x9
245 #define LP_RAST_OP_TRIANGLE_3_4 0xa
246 #define LP_RAST_OP_TRIANGLE_3_16 0xb
247 #define LP_RAST_OP_TRIANGLE_4_16 0xc
248 #define LP_RAST_OP_SHADE_TILE 0xd
249 #define LP_RAST_OP_SHADE_TILE_OPAQUE 0xe
250 #define LP_RAST_OP_BEGIN_QUERY 0xf
251 #define LP_RAST_OP_END_QUERY 0x10
252 #define LP_RAST_OP_SET_STATE 0x11
254 #define LP_RAST_OP_MAX 0x12
255 #define LP_RAST_OP_MASK 0xff
258 lp_debug_bins( struct lp_scene *scene );
260 lp_debug_draw_bins_by_cmd_length( struct lp_scene *scene );
262 lp_debug_draw_bins_by_coverage( struct lp_scene *scene );