1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
34 #include "util/u_math.h"
35 #include "util/u_memory.h"
37 #include "pipe/p_shader_tokens.h"
39 #include "draw_private.h"
40 #include "draw_context.h"
43 #include "translate/translate.h"
44 #include "translate/translate_cache.h"
46 #include "tgsi/tgsi_dump.h"
47 #include "tgsi/tgsi_exec.h"
49 DEBUG_GET_ONCE_BOOL_OPTION(gallium_dump_vs
, "GALLIUM_DUMP_VS", FALSE
)
52 void draw_vs_set_viewport( struct draw_context
*draw
,
53 const struct pipe_viewport_state
*viewport
)
59 struct draw_vertex_shader
*
60 draw_create_vertex_shader(struct draw_context
*draw
,
61 const struct pipe_shader_state
*shader
)
63 struct draw_vertex_shader
*vs
= NULL
;
66 tgsi_dump(shader
->tokens
, 0);
70 if (draw
->pt
.middle
.llvm
) {
71 vs
= draw_create_vs_llvm(draw
, shader
);
76 vs
= draw_create_vs_exec( draw
, shader
);
82 bool found_clipvertex
= FALSE
;
83 vs
->position_output
= -1;
84 for (i
= 0; i
< vs
->info
.num_outputs
; i
++) {
85 if (vs
->info
.output_semantic_name
[i
] == TGSI_SEMANTIC_POSITION
&&
86 vs
->info
.output_semantic_index
[i
] == 0)
87 vs
->position_output
= i
;
88 else if (vs
->info
.output_semantic_name
[i
] == TGSI_SEMANTIC_EDGEFLAG
&&
89 vs
->info
.output_semantic_index
[i
] == 0)
90 vs
->edgeflag_output
= i
;
91 else if (vs
->info
.output_semantic_name
[i
] == TGSI_SEMANTIC_CLIPVERTEX
&&
92 vs
->info
.output_semantic_index
[i
] == 0) {
93 found_clipvertex
= TRUE
;
94 vs
->clipvertex_output
= i
;
95 } else if (vs
->info
.output_semantic_name
[i
] == TGSI_SEMANTIC_CLIPDIST
) {
96 if (vs
->info
.output_semantic_index
[i
] == 0)
97 vs
->clipdistance_output
[0] = i
;
99 vs
->clipdistance_output
[1] = i
;
102 if (!found_clipvertex
)
103 vs
->clipvertex_output
= vs
->position_output
;
112 draw_bind_vertex_shader(struct draw_context
*draw
,
113 struct draw_vertex_shader
*dvs
)
115 draw_do_flush( draw
, DRAW_FLUSH_STATE_CHANGE
);
119 draw
->vs
.vertex_shader
= dvs
;
120 draw
->vs
.num_vs_outputs
= dvs
->info
.num_outputs
;
121 draw
->vs
.position_output
= dvs
->position_output
;
122 draw
->vs
.edgeflag_output
= dvs
->edgeflag_output
;
123 draw
->vs
.clipvertex_output
= dvs
->clipvertex_output
;
124 draw
->vs
.clipdistance_output
[0] = dvs
->clipdistance_output
[0];
125 draw
->vs
.clipdistance_output
[1] = dvs
->clipdistance_output
[1];
126 dvs
->prepare( dvs
, draw
);
129 draw
->vs
.vertex_shader
= NULL
;
130 draw
->vs
.num_vs_outputs
= 0;
136 draw_delete_vertex_shader(struct draw_context
*draw
,
137 struct draw_vertex_shader
*dvs
)
141 for (i
= 0; i
< dvs
->nr_variants
; i
++)
142 dvs
->variant
[i
]->destroy( dvs
->variant
[i
] );
144 dvs
->nr_variants
= 0;
152 draw_vs_init( struct draw_context
*draw
)
154 draw
->dump_vs
= debug_get_option_gallium_dump_vs();
156 draw
->vs
.tgsi
.machine
= tgsi_exec_machine_create();
157 if (!draw
->vs
.tgsi
.machine
)
160 draw
->vs
.emit_cache
= translate_cache_create();
161 if (!draw
->vs
.emit_cache
)
164 draw
->vs
.fetch_cache
= translate_cache_create();
165 if (!draw
->vs
.fetch_cache
)
172 draw_vs_destroy( struct draw_context
*draw
)
174 if (draw
->vs
.fetch_cache
)
175 translate_cache_destroy(draw
->vs
.fetch_cache
);
177 if (draw
->vs
.emit_cache
)
178 translate_cache_destroy(draw
->vs
.emit_cache
);
180 tgsi_exec_machine_destroy(draw
->vs
.tgsi
.machine
);
184 struct draw_vs_variant
*
185 draw_vs_lookup_variant( struct draw_vertex_shader
*vs
,
186 const struct draw_vs_variant_key
*key
)
188 struct draw_vs_variant
*variant
;
191 /* Lookup existing variant:
193 for (i
= 0; i
< vs
->nr_variants
; i
++)
194 if (draw_vs_variant_key_compare(key
, &vs
->variant
[i
]->key
) == 0)
195 return vs
->variant
[i
];
197 /* Else have to create a new one:
199 variant
= vs
->create_variant( vs
, key
);
203 /* Add it to our list, could be smarter:
205 if (vs
->nr_variants
< Elements(vs
->variant
)) {
206 vs
->variant
[vs
->nr_variants
++] = variant
;
210 vs
->last_variant
%= Elements(vs
->variant
);
211 vs
->variant
[vs
->last_variant
]->destroy(vs
->variant
[vs
->last_variant
]);
212 vs
->variant
[vs
->last_variant
] = variant
;
222 draw_vs_get_fetch( struct draw_context
*draw
,
223 struct translate_key
*key
)
225 if (!draw
->vs
.fetch
||
226 translate_key_compare(&draw
->vs
.fetch
->key
, key
) != 0)
228 translate_key_sanitize(key
);
229 draw
->vs
.fetch
= translate_cache_find(draw
->vs
.fetch_cache
, key
);
232 return draw
->vs
.fetch
;
236 draw_vs_get_emit( struct draw_context
*draw
,
237 struct translate_key
*key
)
239 if (!draw
->vs
.emit
||
240 translate_key_compare(&draw
->vs
.emit
->key
, key
) != 0)
242 translate_key_sanitize(key
);
243 draw
->vs
.emit
= translate_cache_find(draw
->vs
.emit_cache
, key
);
246 return draw
->vs
.emit
;
250 draw_vs_attach_so(struct draw_vertex_shader
*dvs
,
251 const struct pipe_stream_output_info
*info
)
253 dvs
->state
.stream_output
= *info
;
257 draw_vs_reset_so(struct draw_vertex_shader
*dvs
)
259 memset(&dvs
->state
.stream_output
, 0, sizeof(dvs
->state
.stream_output
));