2 * Copyright 2003 Tungsten Graphics, inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keithw@tungstengraphics.com>
29 #include "pipe/p_config.h"
30 #include "pipe/p_compiler.h"
31 #include "util/u_memory.h"
32 #include "util/u_math.h"
34 #include "translate.h"
37 #if defined(PIPE_ARCH_X86)
39 #include "rtasm/rtasm_cpu.h"
40 #include "rtasm/rtasm_x86sse.h"
49 typedef void (PIPE_CDECL
*run_func
)( struct translate
*translate
,
53 void *output_buffer
);
55 typedef void (PIPE_CDECL
*run_elts_func
)( struct translate
*translate
,
59 void *output_buffer
);
61 struct translate_buffer
{
66 struct translate_buffer_varient
{
67 unsigned buffer_index
;
68 unsigned instance_divisor
;
69 void *ptr
; /* updated either per vertex or per instance */
73 struct translate_sse
{
74 struct translate translate
;
76 struct x86_function linear_func
;
77 struct x86_function elt_func
;
78 struct x86_function
*func
;
80 boolean loaded_identity
;
82 boolean loaded_inv_255
;
88 struct translate_buffer buffer
[PIPE_MAX_ATTRIBS
];
91 /* Multiple buffer varients can map to a single buffer. */
92 struct translate_buffer_varient buffer_varient
[PIPE_MAX_ATTRIBS
];
93 unsigned nr_buffer_varients
;
95 /* Multiple elements can map to a single buffer varient. */
96 unsigned element_to_buffer_varient
[PIPE_MAX_ATTRIBS
];
98 boolean use_instancing
;
102 run_elts_func gen_run_elts
;
104 /* these are actually known values, but putting them in a struct
105 * like this is helpful to keep them in sync across the file.
107 struct x86_reg tmp_EAX
;
108 struct x86_reg idx_EBX
; /* either start+i or &elt[i] */
109 struct x86_reg outbuf_ECX
;
110 struct x86_reg machine_EDX
;
111 struct x86_reg count_ESI
; /* decrements to zero */
114 static int get_offset( const void *a
, const void *b
)
116 return (const char *)b
- (const char *)a
;
121 static struct x86_reg
get_identity( struct translate_sse
*p
)
123 struct x86_reg reg
= x86_make_reg(file_XMM
, 6);
125 if (!p
->loaded_identity
) {
126 p
->loaded_identity
= TRUE
;
132 sse_movups(p
->func
, reg
,
133 x86_make_disp(p
->machine_EDX
,
134 get_offset(p
, &p
->identity
[0])));
140 static struct x86_reg
get_255( struct translate_sse
*p
)
142 struct x86_reg reg
= x86_make_reg(file_XMM
, 7);
144 if (!p
->loaded_255
) {
145 p
->loaded_255
= TRUE
;
149 p
->float_255
[3] = 255.0f
;
151 sse_movups(p
->func
, reg
,
152 x86_make_disp(p
->machine_EDX
,
153 get_offset(p
, &p
->float_255
[0])));
159 static struct x86_reg
get_inv_255( struct translate_sse
*p
)
161 struct x86_reg reg
= x86_make_reg(file_XMM
, 5);
163 if (!p
->loaded_inv_255
) {
164 p
->loaded_inv_255
= TRUE
;
168 p
->inv_255
[3] = 1.0f
/ 255.0f
;
170 sse_movups(p
->func
, reg
,
171 x86_make_disp(p
->machine_EDX
,
172 get_offset(p
, &p
->inv_255
[0])));
179 static void emit_load_R32G32B32A32( struct translate_sse
*p
,
181 struct x86_reg arg0
)
183 sse_movups(p
->func
, data
, arg0
);
186 static void emit_load_R32G32B32( struct translate_sse
*p
,
188 struct x86_reg arg0
)
190 /* Have to jump through some hoops:
197 sse_movss(p
->func
, data
, x86_make_disp(arg0
, 8));
198 sse_shufps(p
->func
, data
, get_identity(p
), SHUF(X
,Y
,Z
,W
) );
199 sse_shufps(p
->func
, data
, data
, SHUF(Y
,Z
,X
,W
) );
200 sse_movlps(p
->func
, data
, arg0
);
203 static void emit_load_R32G32( struct translate_sse
*p
,
205 struct x86_reg arg0
)
210 sse_movups(p
->func
, data
, get_identity(p
) );
211 sse_movlps(p
->func
, data
, arg0
);
215 static void emit_load_R32( struct translate_sse
*p
,
217 struct x86_reg arg0
)
222 sse_movss(p
->func
, data
, arg0
);
223 sse_orps(p
->func
, data
, get_identity(p
) );
227 static void emit_load_R8G8B8A8_UNORM( struct translate_sse
*p
,
232 /* Load and unpack twice:
234 sse_movss(p
->func
, data
, src
);
235 sse2_punpcklbw(p
->func
, data
, get_identity(p
));
236 sse2_punpcklbw(p
->func
, data
, get_identity(p
));
240 sse2_cvtdq2ps(p
->func
, data
, data
);
245 sse_mulps(p
->func
, data
, get_inv_255(p
));
251 static void emit_store_R32G32B32A32( struct translate_sse
*p
,
253 struct x86_reg dataXMM
)
255 sse_movups(p
->func
, dest
, dataXMM
);
258 static void emit_store_R32G32B32( struct translate_sse
*p
,
260 struct x86_reg dataXMM
)
262 /* Emit two, shuffle, emit one.
264 sse_movlps(p
->func
, dest
, dataXMM
);
265 sse_shufps(p
->func
, dataXMM
, dataXMM
, SHUF(Z
,Z
,Z
,Z
) ); /* NOTE! destructive */
266 sse_movss(p
->func
, x86_make_disp(dest
,8), dataXMM
);
269 static void emit_store_R32G32( struct translate_sse
*p
,
271 struct x86_reg dataXMM
)
273 sse_movlps(p
->func
, dest
, dataXMM
);
276 static void emit_store_R32( struct translate_sse
*p
,
278 struct x86_reg dataXMM
)
280 sse_movss(p
->func
, dest
, dataXMM
);
285 static void emit_store_R8G8B8A8_UNORM( struct translate_sse
*p
,
287 struct x86_reg dataXMM
)
291 sse_mulps(p
->func
, dataXMM
, get_255(p
));
295 sse2_cvtps2dq(p
->func
, dataXMM
, dataXMM
);
296 sse2_packssdw(p
->func
, dataXMM
, dataXMM
);
297 sse2_packuswb(p
->func
, dataXMM
, dataXMM
);
298 sse_movss(p
->func
, dest
, dataXMM
);
305 /* Extended swizzles? Maybe later.
307 static void emit_swizzle( struct translate_sse
*p
,
310 unsigned char shuffle
)
312 sse_shufps(p
->func
, dest
, src
, shuffle
);
316 static boolean
translate_attr( struct translate_sse
*p
,
317 const struct translate_element
*a
,
318 struct x86_reg srcECX
,
319 struct x86_reg dstEAX
)
321 struct x86_reg dataXMM
= x86_make_reg(file_XMM
, 0);
323 switch (a
->input_format
) {
324 case PIPE_FORMAT_R32_FLOAT
:
325 emit_load_R32(p
, dataXMM
, srcECX
);
327 case PIPE_FORMAT_R32G32_FLOAT
:
328 emit_load_R32G32(p
, dataXMM
, srcECX
);
330 case PIPE_FORMAT_R32G32B32_FLOAT
:
331 emit_load_R32G32B32(p
, dataXMM
, srcECX
);
333 case PIPE_FORMAT_R32G32B32A32_FLOAT
:
334 emit_load_R32G32B32A32(p
, dataXMM
, srcECX
);
336 case PIPE_FORMAT_B8G8R8A8_UNORM
:
337 emit_load_R8G8B8A8_UNORM(p
, dataXMM
, srcECX
);
338 emit_swizzle(p
, dataXMM
, dataXMM
, SHUF(Z
,Y
,X
,W
));
340 case PIPE_FORMAT_R8G8B8A8_UNORM
:
341 emit_load_R8G8B8A8_UNORM(p
, dataXMM
, srcECX
);
347 switch (a
->output_format
) {
348 case PIPE_FORMAT_R32_FLOAT
:
349 emit_store_R32(p
, dstEAX
, dataXMM
);
351 case PIPE_FORMAT_R32G32_FLOAT
:
352 emit_store_R32G32(p
, dstEAX
, dataXMM
);
354 case PIPE_FORMAT_R32G32B32_FLOAT
:
355 emit_store_R32G32B32(p
, dstEAX
, dataXMM
);
357 case PIPE_FORMAT_R32G32B32A32_FLOAT
:
358 emit_store_R32G32B32A32(p
, dstEAX
, dataXMM
);
360 case PIPE_FORMAT_B8G8R8A8_UNORM
:
361 emit_swizzle(p
, dataXMM
, dataXMM
, SHUF(Z
,Y
,X
,W
));
362 emit_store_R8G8B8A8_UNORM(p
, dstEAX
, dataXMM
);
364 case PIPE_FORMAT_R8G8B8A8_UNORM
:
365 emit_store_R8G8B8A8_UNORM(p
, dstEAX
, dataXMM
);
375 static boolean
init_inputs( struct translate_sse
*p
,
380 struct x86_reg instance_id
= x86_make_disp(p
->machine_EDX
,
381 get_offset(p
, &p
->instance_id
));
383 for (i
= 0; i
< p
->nr_buffer_varients
; i
++) {
384 struct translate_buffer_varient
*varient
= &p
->buffer_varient
[i
];
385 struct translate_buffer
*buffer
= &p
->buffer
[varient
->buffer_index
];
386 struct x86_reg buf_stride
= x86_make_disp(p
->machine_EDX
,
387 get_offset(p
, &buffer
->stride
));
388 struct x86_reg buf_ptr
= x86_make_disp(p
->machine_EDX
,
389 get_offset(p
, &varient
->ptr
));
390 struct x86_reg buf_base_ptr
= x86_make_disp(p
->machine_EDX
,
391 get_offset(p
, &buffer
->base_ptr
));
392 struct x86_reg elt
= p
->idx_EBX
;
393 struct x86_reg tmp_EAX
= p
->tmp_EAX
;
395 /* Calculate pointer to first attrib:
396 * base_ptr + stride * index, where index depends on instance divisor
398 if (varient
->instance_divisor
) {
399 /* Our index is instance ID divided by instance divisor.
401 x86_mov(p
->func
, tmp_EAX
, instance_id
);
403 if (varient
->instance_divisor
!= 1) {
404 struct x86_reg tmp_EDX
= p
->machine_EDX
;
405 struct x86_reg tmp_ECX
= p
->outbuf_ECX
;
407 /* TODO: Add x86_shr() to rtasm and use it whenever
408 * instance divisor is power of two.
411 x86_push(p
->func
, tmp_EDX
);
412 x86_push(p
->func
, tmp_ECX
);
413 x86_xor(p
->func
, tmp_EDX
, tmp_EDX
);
414 x86_mov_reg_imm(p
->func
, tmp_ECX
, varient
->instance_divisor
);
415 x86_div(p
->func
, tmp_ECX
); /* EAX = EDX:EAX / ECX */
416 x86_pop(p
->func
, tmp_ECX
);
417 x86_pop(p
->func
, tmp_EDX
);
420 x86_mov(p
->func
, tmp_EAX
, elt
);
422 x86_imul(p
->func
, tmp_EAX
, buf_stride
);
423 x86_add(p
->func
, tmp_EAX
, buf_base_ptr
);
426 /* In the linear case, keep the buffer pointer instead of the
429 if (p
->nr_buffer_varients
== 1)
430 x86_mov(p
->func
, elt
, tmp_EAX
);
432 x86_mov(p
->func
, buf_ptr
, tmp_EAX
);
440 static struct x86_reg
get_buffer_ptr( struct translate_sse
*p
,
445 if (linear
&& p
->nr_buffer_varients
== 1) {
449 struct x86_reg ptr
= p
->tmp_EAX
;
450 struct x86_reg buf_ptr
=
451 x86_make_disp(p
->machine_EDX
,
452 get_offset(p
, &p
->buffer_varient
[var_idx
].ptr
));
454 x86_mov(p
->func
, ptr
, buf_ptr
);
458 struct x86_reg ptr
= p
->tmp_EAX
;
459 const struct translate_buffer_varient
*varient
= &p
->buffer_varient
[var_idx
];
461 struct x86_reg buf_stride
=
462 x86_make_disp(p
->machine_EDX
,
463 get_offset(p
, &p
->buffer
[varient
->buffer_index
].stride
));
465 struct x86_reg buf_base_ptr
=
466 x86_make_disp(p
->machine_EDX
,
467 get_offset(p
, &p
->buffer
[varient
->buffer_index
].base_ptr
));
471 /* Calculate pointer to current attrib:
473 x86_mov(p
->func
, ptr
, buf_stride
);
474 x86_imul(p
->func
, ptr
, elt
);
475 x86_add(p
->func
, ptr
, buf_base_ptr
);
482 static boolean
incr_inputs( struct translate_sse
*p
,
485 if (linear
&& p
->nr_buffer_varients
== 1) {
486 struct x86_reg stride
= x86_make_disp(p
->machine_EDX
,
487 get_offset(p
, &p
->buffer
[0].stride
));
489 if (p
->buffer_varient
[0].instance_divisor
== 0) {
490 x86_add(p
->func
, p
->idx_EBX
, stride
);
491 sse_prefetchnta(p
->func
, x86_make_disp(p
->idx_EBX
, 192));
497 /* Is this worthwhile??
499 for (i
= 0; i
< p
->nr_buffer_varients
; i
++) {
500 struct translate_buffer_varient
*varient
= &p
->buffer_varient
[i
];
501 struct x86_reg buf_ptr
= x86_make_disp(p
->machine_EDX
,
502 get_offset(p
, &varient
->ptr
));
503 struct x86_reg buf_stride
= x86_make_disp(p
->machine_EDX
,
504 get_offset(p
, &p
->buffer
[varient
->buffer_index
].stride
));
506 if (varient
->instance_divisor
== 0) {
507 x86_mov(p
->func
, p
->tmp_EAX
, buf_ptr
);
508 x86_add(p
->func
, p
->tmp_EAX
, buf_stride
);
509 if (i
== 0) sse_prefetchnta(p
->func
, x86_make_disp(p
->tmp_EAX
, 192));
510 x86_mov(p
->func
, buf_ptr
, p
->tmp_EAX
);
515 x86_lea(p
->func
, p
->idx_EBX
, x86_make_disp(p
->idx_EBX
, 4));
522 /* Build run( struct translate *machine,
525 * void *output_buffer )
527 * run_elts( struct translate *machine,
530 * void *output_buffer )
534 * EAX -- pointer to current output vertex
535 * ECX -- pointer to current attribute
538 static boolean
build_vertex_emit( struct translate_sse
*p
,
539 struct x86_function
*func
,
545 p
->tmp_EAX
= x86_make_reg(file_REG32
, reg_AX
);
546 p
->idx_EBX
= x86_make_reg(file_REG32
, reg_BX
);
547 p
->outbuf_ECX
= x86_make_reg(file_REG32
, reg_CX
);
548 p
->machine_EDX
= x86_make_reg(file_REG32
, reg_DX
);
549 p
->count_ESI
= x86_make_reg(file_REG32
, reg_SI
);
552 p
->loaded_inv_255
= FALSE
;
553 p
->loaded_255
= FALSE
;
554 p
->loaded_identity
= FALSE
;
556 x86_init_func(p
->func
);
560 x86_push(p
->func
, p
->idx_EBX
);
561 x86_push(p
->func
, p
->count_ESI
);
563 /* Load arguments into regs:
565 x86_mov(p
->func
, p
->machine_EDX
, x86_fn_arg(p
->func
, 1));
566 x86_mov(p
->func
, p
->idx_EBX
, x86_fn_arg(p
->func
, 2));
567 x86_mov(p
->func
, p
->count_ESI
, x86_fn_arg(p
->func
, 3));
568 x86_mov(p
->func
, p
->outbuf_ECX
, x86_fn_arg(p
->func
, 5));
572 if (p
->use_instancing
) {
575 x86_fn_arg(p
->func
, 4));
577 x86_make_disp(p
->machine_EDX
, get_offset(p
, &p
->instance_id
)),
581 /* Get vertex count, compare to zero
583 x86_xor(p
->func
, p
->tmp_EAX
, p
->tmp_EAX
);
584 x86_cmp(p
->func
, p
->count_ESI
, p
->tmp_EAX
);
585 fixup
= x86_jcc_forward(p
->func
, cc_E
);
587 /* always load, needed or not:
589 init_inputs(p
, linear
);
591 /* Note address for loop jump
593 label
= x86_get_label(p
->func
);
595 struct x86_reg elt
= linear
? p
->idx_EBX
: x86_deref(p
->idx_EBX
);
596 int last_varient
= -1;
599 for (j
= 0; j
< p
->translate
.key
.nr_elements
; j
++) {
600 const struct translate_element
*a
= &p
->translate
.key
.element
[j
];
601 unsigned varient
= p
->element_to_buffer_varient
[j
];
603 /* Figure out source pointer address:
605 if (varient
!= last_varient
) {
606 last_varient
= varient
;
607 vb
= get_buffer_ptr(p
, linear
, varient
, elt
);
610 if (!translate_attr( p
, a
,
611 x86_make_disp(vb
, a
->input_offset
),
612 x86_make_disp(p
->outbuf_ECX
, a
->output_offset
)))
616 /* Next output vertex:
620 x86_make_disp(p
->outbuf_ECX
,
621 p
->translate
.key
.output_stride
));
625 incr_inputs( p
, linear
);
628 /* decr count, loop if not zero
630 x86_dec(p
->func
, p
->count_ESI
);
631 x86_jcc(p
->func
, cc_NZ
, label
);
635 if (p
->func
->need_emms
)
638 /* Land forward jump here:
640 x86_fixup_fwd_jump(p
->func
, fixup
);
642 /* Pop regs and return
645 x86_pop(p
->func
, p
->count_ESI
);
646 x86_pop(p
->func
, p
->idx_EBX
);
658 static void translate_sse_set_buffer( struct translate
*translate
,
663 struct translate_sse
*p
= (struct translate_sse
*)translate
;
665 if (buf
< p
->nr_buffers
) {
666 p
->buffer
[buf
].base_ptr
= (char *)ptr
;
667 p
->buffer
[buf
].stride
= stride
;
670 if (0) debug_printf("%s %d/%d: %p %d\n",
677 static void translate_sse_release( struct translate
*translate
)
679 struct translate_sse
*p
= (struct translate_sse
*)translate
;
681 x86_release_func( &p
->linear_func
);
682 x86_release_func( &p
->elt_func
);
687 static void PIPE_CDECL
translate_sse_run_elts( struct translate
*translate
,
688 const unsigned *elts
,
690 void *output_buffer
)
692 struct translate_sse
*p
= (struct translate_sse
*)translate
;
694 p
->gen_run_elts( translate
,
701 static void PIPE_CDECL
translate_sse_run( struct translate
*translate
,
704 unsigned instance_id
,
705 void *output_buffer
)
707 struct translate_sse
*p
= (struct translate_sse
*)translate
;
709 p
->gen_run( translate
,
717 struct translate
*translate_sse2_create( const struct translate_key
*key
)
719 struct translate_sse
*p
= NULL
;
722 if (!rtasm_cpu_has_sse() || !rtasm_cpu_has_sse2())
725 p
= CALLOC_STRUCT( translate_sse
);
729 p
->translate
.key
= *key
;
730 p
->translate
.release
= translate_sse_release
;
731 p
->translate
.set_buffer
= translate_sse_set_buffer
;
732 p
->translate
.run_elts
= translate_sse_run_elts
;
733 p
->translate
.run
= translate_sse_run
;
735 for (i
= 0; i
< key
->nr_elements
; i
++) {
738 p
->nr_buffers
= MAX2( p
->nr_buffers
, key
->element
[i
].input_buffer
+ 1 );
740 if (key
->element
[i
].instance_divisor
) {
741 p
->use_instancing
= TRUE
;
745 * Map vertex element to vertex buffer varient.
747 for (j
= 0; j
< p
->nr_buffer_varients
; j
++) {
748 if (p
->buffer_varient
[j
].buffer_index
== key
->element
[i
].input_buffer
&&
749 p
->buffer_varient
[j
].instance_divisor
== key
->element
[i
].instance_divisor
) {
753 if (j
== p
->nr_buffer_varients
) {
754 p
->buffer_varient
[j
].buffer_index
= key
->element
[i
].input_buffer
;
755 p
->buffer_varient
[j
].instance_divisor
= key
->element
[i
].instance_divisor
;
756 p
->nr_buffer_varients
++;
758 p
->element_to_buffer_varient
[i
] = j
;
761 if (0) debug_printf("nr_buffers: %d\n", p
->nr_buffers
);
763 if (!build_vertex_emit(p
, &p
->linear_func
, TRUE
))
766 if (!build_vertex_emit(p
, &p
->elt_func
, FALSE
))
769 p
->gen_run
= (run_func
)x86_get_func(&p
->linear_func
);
770 if (p
->gen_run
== NULL
)
773 p
->gen_run_elts
= (run_elts_func
)x86_get_func(&p
->elt_func
);
774 if (p
->gen_run_elts
== NULL
)
777 return &p
->translate
;
781 translate_sse_release( &p
->translate
);
790 struct translate
*translate_sse2_create( const struct translate_key
*key
)