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 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 #include "draw_private.h"
31 #include "draw_context.h"
33 #include "tgsi/tgsi_parse.h"
34 #include "tgsi/tgsi_exec.h"
36 #include "pipe/p_shader_tokens.h"
38 #include "util/u_math.h"
39 #include "util/u_memory.h"
40 #include "util/u_prim.h"
42 #define MAX_PRIM_VERTICES 6
43 /* fixme: move it from here */
44 #define MAX_PRIMITIVES 64
47 draw_gs_init( struct draw_context
*draw
)
49 draw
->gs
.machine
= tgsi_exec_machine_create();
50 if (!draw
->gs
.machine
)
53 draw
->gs
.machine
->Primitives
= align_malloc(
54 MAX_PRIMITIVES
* sizeof(struct tgsi_exec_vector
), 16);
55 if (!draw
->gs
.machine
->Primitives
)
57 memset(draw
->gs
.machine
->Primitives
, 0,
58 MAX_PRIMITIVES
* sizeof(struct tgsi_exec_vector
));
63 void draw_gs_destroy( struct draw_context
*draw
)
65 if (!draw
->gs
.machine
)
68 align_free(draw
->gs
.machine
->Primitives
);
70 tgsi_exec_machine_destroy(draw
->gs
.machine
);
74 draw_gs_set_constants(struct draw_context
*draw
,
76 const void *constants
,
82 struct draw_geometry_shader
*
83 draw_create_geometry_shader(struct draw_context
*draw
,
84 const struct pipe_shader_state
*state
)
86 struct draw_geometry_shader
*gs
;
89 gs
= CALLOC_STRUCT(draw_geometry_shader
);
96 gs
->state
.tokens
= tgsi_dup_tokens(state
->tokens
);
97 if (!gs
->state
.tokens
) {
102 tgsi_scan_shader(state
->tokens
, &gs
->info
);
104 /* setup the defaults */
105 gs
->input_primitive
= PIPE_PRIM_TRIANGLES
;
106 gs
->output_primitive
= PIPE_PRIM_TRIANGLE_STRIP
;
107 gs
->max_output_vertices
= 32;
109 for (i
= 0; i
< gs
->info
.num_properties
; ++i
) {
110 if (gs
->info
.properties
[i
].name
==
111 TGSI_PROPERTY_GS_INPUT_PRIM
)
112 gs
->input_primitive
= gs
->info
.properties
[i
].data
[0];
113 else if (gs
->info
.properties
[i
].name
==
114 TGSI_PROPERTY_GS_OUTPUT_PRIM
)
115 gs
->output_primitive
= gs
->info
.properties
[i
].data
[0];
116 else if (gs
->info
.properties
[i
].name
==
117 TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES
)
118 gs
->max_output_vertices
= gs
->info
.properties
[i
].data
[0];
121 gs
->machine
= draw
->gs
.machine
;
126 for (i
= 0; i
< gs
->info
.num_outputs
; i
++) {
127 if (gs
->info
.output_semantic_name
[i
] == TGSI_SEMANTIC_POSITION
&&
128 gs
->info
.output_semantic_index
[i
] == 0)
129 gs
->position_output
= i
;
136 void draw_bind_geometry_shader(struct draw_context
*draw
,
137 struct draw_geometry_shader
*dgs
)
139 draw_do_flush(draw
, DRAW_FLUSH_STATE_CHANGE
);
142 draw
->gs
.geometry_shader
= dgs
;
143 draw
->gs
.num_gs_outputs
= dgs
->info
.num_outputs
;
144 draw
->gs
.position_output
= dgs
->position_output
;
145 draw_geometry_shader_prepare(dgs
, draw
);
148 draw
->gs
.geometry_shader
= NULL
;
149 draw
->gs
.num_gs_outputs
= 0;
153 void draw_delete_geometry_shader(struct draw_context
*draw
,
154 struct draw_geometry_shader
*dgs
)
159 /*#define DEBUG_OUTPUTS 1*/
161 draw_geometry_fetch_outputs(struct draw_geometry_shader
*shader
,
163 float (**p_output
)[4])
165 struct tgsi_exec_machine
*machine
= shader
->machine
;
166 unsigned prim_idx
, j
, slot
;
171 /* Unswizzle all output results.
174 for (prim_idx
= 0; prim_idx
< num_primitives
; ++prim_idx
) {
175 unsigned num_verts_per_prim
= machine
->Primitives
[prim_idx
];
176 shader
->primitive_lengths
[prim_idx
+ shader
->emitted_primitives
] =
177 machine
->Primitives
[prim_idx
];
178 shader
->emitted_vertices
+= num_verts_per_prim
;
179 for (j
= 0; j
< num_verts_per_prim
; j
++) {
180 int idx
= (prim_idx
* num_verts_per_prim
+ j
) *
181 shader
->info
.num_outputs
;
183 debug_printf("%d) Output vert:\n", idx
/ shader
->info
.num_outputs
);
185 for (slot
= 0; slot
< shader
->info
.num_outputs
; slot
++) {
186 output
[slot
][0] = machine
->Outputs
[idx
+ slot
].xyzw
[0].f
[0];
187 output
[slot
][1] = machine
->Outputs
[idx
+ slot
].xyzw
[1].f
[0];
188 output
[slot
][2] = machine
->Outputs
[idx
+ slot
].xyzw
[2].f
[0];
189 output
[slot
][3] = machine
->Outputs
[idx
+ slot
].xyzw
[3].f
[0];
191 debug_printf("\t%d: %f %f %f %f\n", slot
,
197 debug_assert(!util_is_inf_or_nan(output
[slot
][0]));
199 output
= (float (*)[4])((char *)output
+ shader
->vertex_size
);
203 shader
->emitted_primitives
+= num_primitives
;
206 /*#define DEBUG_INPUTS 1*/
207 static void draw_fetch_gs_input(struct draw_geometry_shader
*shader
,
209 unsigned num_vertices
,
212 struct tgsi_exec_machine
*machine
= shader
->machine
;
213 unsigned slot
, vs_slot
, i
;
214 unsigned input_vertex_stride
= shader
->input_vertex_stride
;
215 const float (*input_ptr
)[4];
217 input_ptr
= shader
->input
;
219 for (i
= 0; i
< num_vertices
; ++i
) {
220 const float (*input
)[4];
222 debug_printf("%d) vertex index = %d (prim idx = %d)\n",
223 i
, indices
[i
], prim_idx
);
225 input
= (const float (*)[4])(
226 (const char *)input_ptr
+ (indices
[i
] * input_vertex_stride
));
227 for (slot
= 0, vs_slot
= 0; slot
< shader
->info
.num_inputs
; ++slot
) {
228 unsigned idx
= i
* TGSI_EXEC_MAX_INPUT_ATTRIBS
+ slot
;
229 if (shader
->info
.input_semantic_name
[slot
] == TGSI_SEMANTIC_PRIMID
) {
230 machine
->Inputs
[idx
].xyzw
[0].f
[prim_idx
] =
231 (float)shader
->in_prim_idx
;
232 machine
->Inputs
[idx
].xyzw
[1].f
[prim_idx
] =
233 (float)shader
->in_prim_idx
;
234 machine
->Inputs
[idx
].xyzw
[2].f
[prim_idx
] =
235 (float)shader
->in_prim_idx
;
236 machine
->Inputs
[idx
].xyzw
[3].f
[prim_idx
] =
237 (float)shader
->in_prim_idx
;
240 debug_printf("\tSlot = %d, vs_slot = %d, idx = %d:\n",
244 assert(!util_is_inf_or_nan(input
[vs_slot
][0]));
245 assert(!util_is_inf_or_nan(input
[vs_slot
][1]));
246 assert(!util_is_inf_or_nan(input
[vs_slot
][2]));
247 assert(!util_is_inf_or_nan(input
[vs_slot
][3]));
249 machine
->Inputs
[idx
].xyzw
[0].f
[prim_idx
] = input
[vs_slot
][0];
250 machine
->Inputs
[idx
].xyzw
[1].f
[prim_idx
] = input
[vs_slot
][1];
251 machine
->Inputs
[idx
].xyzw
[2].f
[prim_idx
] = input
[vs_slot
][2];
252 machine
->Inputs
[idx
].xyzw
[3].f
[prim_idx
] = input
[vs_slot
][3];
254 debug_printf("\t\t%f %f %f %f\n",
255 machine
->Inputs
[idx
].xyzw
[0].f
[prim_idx
],
256 machine
->Inputs
[idx
].xyzw
[1].f
[prim_idx
],
257 machine
->Inputs
[idx
].xyzw
[2].f
[prim_idx
],
258 machine
->Inputs
[idx
].xyzw
[3].f
[prim_idx
]);
266 static void gs_flush(struct draw_geometry_shader
*shader
,
267 unsigned input_primitives
)
269 unsigned out_prim_count
;
270 struct tgsi_exec_machine
*machine
= shader
->machine
;
272 debug_assert(input_primitives
> 0 &&
273 input_primitives
< 4);
275 tgsi_set_exec_mask(machine
,
277 input_primitives
> 1,
278 input_primitives
> 2,
279 input_primitives
> 3);
281 /* run interpreter */
282 tgsi_exec_machine_run(machine
);
285 machine
->Temps
[TGSI_EXEC_TEMP_PRIMITIVE_I
].xyzw
[TGSI_EXEC_TEMP_PRIMITIVE_C
].u
[0];
288 debug_printf("PRIM emitted prims = %d (verts=%d), cur prim count = %d\n",
289 shader
->emitted_primitives
, shader
->emitted_vertices
,
292 draw_geometry_fetch_outputs(shader
, out_prim_count
,
293 &shader
->tmp_output
);
296 static void gs_point(struct draw_geometry_shader
*shader
,
303 draw_fetch_gs_input(shader
, indices
, 1, 0);
304 ++shader
->in_prim_idx
;
309 static void gs_line(struct draw_geometry_shader
*shader
,
317 draw_fetch_gs_input(shader
, indices
, 2, 0);
318 ++shader
->in_prim_idx
;
323 static void gs_line_adj(struct draw_geometry_shader
*shader
,
324 int i0
, int i1
, int i2
, int i3
)
333 draw_fetch_gs_input(shader
, indices
, 4, 0);
334 ++shader
->in_prim_idx
;
340 static void gs_tri(struct draw_geometry_shader
*shader
,
341 int i0
, int i1
, int i2
)
349 draw_fetch_gs_input(shader
, indices
, 3, 0);
350 ++shader
->in_prim_idx
;
355 #define TRIANGLE(gs,i0,i1,i2) gs_tri(gs,i0,i1,i2)
356 #define LINE(gs,i0,i1) gs_line(gs,i0,i1)
357 #define LINE_ADJ(gs,i0,i1,i2,i3) gs_line_adj(gs,i0,i1,i2,i3)
358 #define POINT(gs,i0) gs_point(gs,i0)
361 #include "draw_gs_tmp.h"
364 #define TRIANGLE(gs,i0,i1,i2) gs_tri(gs,elts[i0],elts[i1],elts[i2])
365 #define LINE(gs,i0,i1) gs_line(gs,elts[i0],elts[i1])
366 #define LINE_ADJ(gs,i0,i1,i2,i3) gs_line_adj(gs,elts[i0], \
369 #define POINT(gs,i0) gs_point(gs,elts[i0])
370 #define FUNC gs_run_elts
372 const ushort *elts = input_prims->elts;
373 #include "draw_gs_tmp.h"
375 int draw_geometry_shader_run(struct draw_geometry_shader
*shader
,
376 const void *constants
[PIPE_MAX_CONSTANT_BUFFERS
],
377 const struct draw_vertex_info
*input_verts
,
378 const struct draw_prim_info
*input_prim
,
379 struct draw_vertex_info
*output_verts
,
380 struct draw_prim_info
*output_prims
)
382 const float (*input
)[4] = (const float (*)[4])input_verts
->verts
->data
;
383 unsigned input_stride
= input_verts
->vertex_size
;
384 unsigned vertex_size
= input_verts
->vertex_size
;
385 struct tgsi_exec_machine
*machine
= shader
->machine
;
387 unsigned num_input_verts
= input_prim
->linear
?
390 unsigned num_in_primitives
=
391 MAX2(u_gs_prims_for_vertices(input_prim
->prim
, num_input_verts
),
392 u_gs_prims_for_vertices(shader
->input_primitive
, num_input_verts
));
393 unsigned max_out_prims
= u_gs_prims_for_vertices(shader
->output_primitive
,
394 shader
->max_output_vertices
)
397 output_verts
->vertex_size
= input_verts
->vertex_size
;
398 output_verts
->stride
= input_verts
->vertex_size
;
399 output_verts
->verts
=
400 (struct vertex_header
*)MALLOC(input_verts
->vertex_size
*
402 shader
->max_output_vertices
);
406 debug_printf("%s count = %d (in prims # = %d)\n",
407 __FUNCTION__
, num_input_verts
, num_in_primitives
);
408 debug_printf("\tlinear = %d, prim_info->count = %d\n",
409 input_prim
->linear
, input_prim
->count
);
410 debug_printf("\tprimt pipe = %d, shader in = %d, shader out = %d, max out = %d\n",
411 input_prim
->prim
, shader
->input_primitive
,
412 shader
->output_primitive
,
413 shader
->max_output_vertices
);
416 shader
->emitted_vertices
= 0;
417 shader
->emitted_primitives
= 0;
418 shader
->vertex_size
= vertex_size
;
419 shader
->tmp_output
= (float (*)[4])output_verts
->verts
->data
;
420 shader
->in_prim_idx
= 0;
421 shader
->input_vertex_stride
= input_stride
;
422 shader
->input
= input
;
423 if (shader
->primitive_lengths
) {
424 FREE(shader
->primitive_lengths
);
426 shader
->primitive_lengths
= MALLOC(max_out_prims
* sizeof(unsigned));
428 for (i
= 0; i
< PIPE_MAX_CONSTANT_BUFFERS
; i
++) {
429 machine
->Consts
[i
] = constants
[i
];
432 if (input_prim
->linear
)
433 gs_run(shader
, input_prim
, input_verts
,
434 output_prims
, output_verts
);
436 gs_run_elts(shader
, input_prim
, input_verts
,
437 output_prims
, output_verts
);
441 output_prims
->linear
= TRUE
;
442 output_prims
->elts
= NULL
;
443 output_prims
->start
= 0;
444 output_prims
->count
= shader
->emitted_vertices
;
445 output_prims
->prim
= shader
->output_primitive
;
446 output_prims
->primitive_lengths
= shader
->primitive_lengths
;
447 output_prims
->primitive_count
= shader
->emitted_primitives
;
448 output_verts
->count
= shader
->emitted_vertices
;
451 debug_printf("GS finished, prims = %d, verts = %d\n",
452 output_prims
->primitive_count
,
453 output_verts
->count
);
456 return shader
->emitted_vertices
;
459 void draw_geometry_shader_delete(struct draw_geometry_shader
*shader
)
461 FREE((void*) shader
->state
.tokens
);
465 void draw_geometry_shader_prepare(struct draw_geometry_shader
*shader
,
466 struct draw_context
*draw
)
468 if (shader
&& shader
->machine
->Tokens
!= shader
->state
.tokens
) {
469 tgsi_exec_machine_bind_shader(shader
->machine
,
470 shader
->state
.tokens
,
471 draw
->gs
.num_samplers
,