1 /**************************************************************************
3 * Copyright 2007-2008 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 **************************************************************************/
34 #include "pipe/p_compiler.h"
35 #include "pipe/p_shader_tokens.h"
36 #include "pipe/p_state.h"
37 #include "tgsi/tgsi_ureg.h"
38 #include "st_mesa_to_tgsi.h"
39 #include "shader/prog_instruction.h"
40 #include "shader/prog_parameter.h"
41 #include "shader/prog_print.h"
42 #include "util/u_debug.h"
43 #include "util/u_math.h"
44 #include "util/u_memory.h"
47 unsigned branch_target
;
52 struct ureg_program
*ureg
;
54 struct ureg_dst temps
[MAX_PROGRAM_TEMPS
];
55 struct ureg_src
*constants
;
56 struct ureg_dst outputs
[PIPE_MAX_SHADER_OUTPUTS
];
57 struct ureg_src inputs
[PIPE_MAX_SHADER_INPUTS
];
58 struct ureg_dst address
[1];
59 struct ureg_src samplers
[PIPE_MAX_SAMPLERS
];
61 const GLuint
*inputMapping
;
62 const GLuint
*outputMapping
;
64 /* For every instruction that contains a label (eg CALL), keep
65 * details so that we can go back afterwards and emit the correct
66 * tgsi instruction number for each label.
70 unsigned labels_count
;
72 /* Keep a record of the tgsi instruction number that each mesa
73 * instruction starts at, will be used to fix up labels after
80 unsigned procType
; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */
86 static unsigned *get_label( struct st_translate
*t
,
87 unsigned branch_target
)
91 if (t
->labels_count
+ 1 >= t
->labels_size
) {
92 unsigned old_size
= t
->labels_size
;
93 t
->labels_size
= 1 << (util_logbase2(t
->labels_size
) + 1);
94 t
->labels
= REALLOC( t
->labels
,
95 old_size
* sizeof t
->labels
[0],
96 t
->labels_size
* sizeof t
->labels
[0] );
97 if (t
->labels
== NULL
) {
98 static unsigned dummy
;
104 i
= t
->labels_count
++;
105 t
->labels
[i
].branch_target
= branch_target
;
106 return &t
->labels
[i
].token
;
110 static void set_insn_start( struct st_translate
*t
,
113 if (t
->insn_count
+ 1 >= t
->insn_size
) {
114 unsigned old_size
= t
->insn_size
;
115 t
->insn_size
= 1 << (util_logbase2(t
->insn_size
) + 1);
116 t
->insn
= REALLOC( t
->insn
,
117 old_size
* sizeof t
->insn
[0],
118 t
->insn_size
* sizeof t
->insn
[0] );
119 if (t
->insn
== NULL
) {
125 t
->insn
[t
->insn_count
++] = start
;
130 * Map mesa register file to TGSI register file.
132 static struct ureg_dst
133 dst_register( struct st_translate
*t
,
134 gl_register_file file
,
138 case PROGRAM_UNDEFINED
:
139 return ureg_dst_undef();
141 case PROGRAM_TEMPORARY
:
142 if (ureg_dst_is_undef(t
->temps
[index
]))
143 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
145 return t
->temps
[index
];
148 return t
->outputs
[t
->outputMapping
[index
]];
150 case PROGRAM_ADDRESS
:
151 return t
->address
[index
];
155 return ureg_dst_undef();
160 static struct ureg_src
161 src_register( struct st_translate
*t
,
162 gl_register_file file
,
166 case PROGRAM_UNDEFINED
:
167 return ureg_src_undef();
169 case PROGRAM_TEMPORARY
:
170 if (ureg_dst_is_undef(t
->temps
[index
]))
171 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
172 return ureg_src(t
->temps
[index
]);
174 case PROGRAM_STATE_VAR
:
175 case PROGRAM_NAMED_PARAM
:
176 case PROGRAM_UNIFORM
:
177 case PROGRAM_CONSTANT
:
178 return t
->constants
[index
];
181 return t
->inputs
[t
->inputMapping
[index
]];
184 return ureg_src(t
->outputs
[t
->outputMapping
[index
]]); /* not needed? */
186 case PROGRAM_ADDRESS
:
187 return ureg_src(t
->address
[index
]);
191 return ureg_src_undef();
197 * Map mesa texture target to TGSI texture target.
200 translate_texture_target( GLuint textarget
,
204 switch( textarget
) {
205 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_SHADOW1D
;
206 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_SHADOW2D
;
207 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_SHADOWRECT
;
212 switch( textarget
) {
213 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_1D
;
214 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_2D
;
215 case TEXTURE_3D_INDEX
: return TGSI_TEXTURE_3D
;
216 case TEXTURE_CUBE_INDEX
: return TGSI_TEXTURE_CUBE
;
217 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_RECT
;
220 return TGSI_TEXTURE_1D
;
225 static struct ureg_dst
226 translate_dst( struct st_translate
*t
,
227 const struct prog_dst_register
*DstReg
,
230 struct ureg_dst dst
= dst_register( t
,
234 dst
= ureg_writemask( dst
,
238 dst
= ureg_saturate( dst
);
241 dst
= ureg_dst_indirect( dst
, ureg_src(t
->address
[0]) );
247 static struct ureg_src
248 translate_src( struct st_translate
*t
,
249 const struct prog_src_register
*SrcReg
)
251 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
253 src
= ureg_swizzle( src
,
254 GET_SWZ( SrcReg
->Swizzle
, 0 ) & 0x3,
255 GET_SWZ( SrcReg
->Swizzle
, 1 ) & 0x3,
256 GET_SWZ( SrcReg
->Swizzle
, 2 ) & 0x3,
257 GET_SWZ( SrcReg
->Swizzle
, 3 ) & 0x3);
259 if (SrcReg
->Negate
== NEGATE_XYZW
)
260 src
= ureg_negate(src
);
266 src
= ureg_src_indirect( src
, ureg_src(t
->address
[0]));
272 static struct ureg_src
swizzle_4v( struct ureg_src src
,
273 const unsigned *swz
)
275 return ureg_swizzle( src
, swz
[0], swz
[1], swz
[2], swz
[3] );
280 * Translate SWZ instructions into a single MAD. EG:
286 * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
288 static void emit_swz( struct st_translate
*t
,
290 const struct prog_src_register
*SrcReg
)
292 struct ureg_program
*ureg
= t
->ureg
;
293 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
295 unsigned negate_mask
= SrcReg
->Negate
;
297 unsigned one_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ONE
) << 0 |
298 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ONE
) << 1 |
299 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ONE
) << 2 |
300 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ONE
) << 3);
302 unsigned zero_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ZERO
) << 0 |
303 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ZERO
) << 1 |
304 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ZERO
) << 2 |
305 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ZERO
) << 3);
307 unsigned negative_one_mask
= one_mask
& negate_mask
;
308 unsigned positive_one_mask
= one_mask
& ~negate_mask
;
312 unsigned mul_swizzle
[4] = {0,0,0,0};
313 unsigned add_swizzle
[4] = {0,0,0,0};
314 unsigned src_swizzle
[4] = {0,0,0,0};
315 boolean need_add
= FALSE
;
316 boolean need_mul
= FALSE
;
318 if (dst
.WriteMask
== 0)
321 /* Is this just a MOV?
323 if (zero_mask
== 0 &&
325 (negate_mask
== 0 || negate_mask
== TGSI_WRITEMASK_XYZW
))
327 ureg_MOV( ureg
, dst
, translate_src( t
, SrcReg
));
333 #define IMM_NEG_ONE 2
335 imm
= ureg_imm3f( ureg
, 0, 1, -1 );
337 for (i
= 0; i
< 4; i
++) {
338 unsigned bit
= 1 << i
;
340 if (dst
.WriteMask
& bit
) {
341 if (positive_one_mask
& bit
) {
342 mul_swizzle
[i
] = IMM_ZERO
;
343 add_swizzle
[i
] = IMM_ONE
;
346 else if (negative_one_mask
& bit
) {
347 mul_swizzle
[i
] = IMM_ZERO
;
348 add_swizzle
[i
] = IMM_NEG_ONE
;
351 else if (zero_mask
& bit
) {
352 mul_swizzle
[i
] = IMM_ZERO
;
353 add_swizzle
[i
] = IMM_ZERO
;
357 add_swizzle
[i
] = IMM_ZERO
;
358 src_swizzle
[i
] = GET_SWZ(SrcReg
->Swizzle
, i
);
360 if (negate_mask
& bit
) {
361 mul_swizzle
[i
] = IMM_NEG_ONE
;
364 mul_swizzle
[i
] = IMM_ONE
;
370 if (need_mul
&& need_add
) {
373 swizzle_4v( src
, src_swizzle
),
374 swizzle_4v( imm
, mul_swizzle
),
375 swizzle_4v( imm
, add_swizzle
) );
380 swizzle_4v( src
, src_swizzle
),
381 swizzle_4v( imm
, mul_swizzle
) );
386 swizzle_4v( imm
, add_swizzle
) );
400 translate_opcode( unsigned op
)
404 return TGSI_OPCODE_ARL
;
406 return TGSI_OPCODE_ABS
;
408 return TGSI_OPCODE_ADD
;
410 return TGSI_OPCODE_BGNLOOP
;
412 return TGSI_OPCODE_BGNSUB
;
414 return TGSI_OPCODE_BRA
;
416 return TGSI_OPCODE_BRK
;
418 return TGSI_OPCODE_CAL
;
420 return TGSI_OPCODE_CMP
;
422 return TGSI_OPCODE_CONT
;
424 return TGSI_OPCODE_COS
;
426 return TGSI_OPCODE_DDX
;
428 return TGSI_OPCODE_DDY
;
430 return TGSI_OPCODE_DP2
;
432 return TGSI_OPCODE_DP2A
;
434 return TGSI_OPCODE_DP3
;
436 return TGSI_OPCODE_DP4
;
438 return TGSI_OPCODE_DPH
;
440 return TGSI_OPCODE_DST
;
442 return TGSI_OPCODE_ELSE
;
444 return TGSI_OPCODE_ENDIF
;
446 return TGSI_OPCODE_ENDLOOP
;
448 return TGSI_OPCODE_ENDSUB
;
450 return TGSI_OPCODE_EX2
;
452 return TGSI_OPCODE_EXP
;
454 return TGSI_OPCODE_FLR
;
456 return TGSI_OPCODE_FRC
;
458 return TGSI_OPCODE_IF
;
460 return TGSI_OPCODE_TRUNC
;
462 return TGSI_OPCODE_KIL
;
464 return TGSI_OPCODE_KILP
;
466 return TGSI_OPCODE_LG2
;
468 return TGSI_OPCODE_LOG
;
470 return TGSI_OPCODE_LIT
;
472 return TGSI_OPCODE_LRP
;
474 return TGSI_OPCODE_MAD
;
476 return TGSI_OPCODE_MAX
;
478 return TGSI_OPCODE_MIN
;
480 return TGSI_OPCODE_MOV
;
482 return TGSI_OPCODE_MUL
;
484 return TGSI_OPCODE_NOISE1
;
486 return TGSI_OPCODE_NOISE2
;
488 return TGSI_OPCODE_NOISE3
;
490 return TGSI_OPCODE_NOISE4
;
492 return TGSI_OPCODE_NOP
;
494 return TGSI_OPCODE_NRM
;
496 return TGSI_OPCODE_NRM4
;
498 return TGSI_OPCODE_POW
;
500 return TGSI_OPCODE_RCP
;
502 return TGSI_OPCODE_RET
;
504 return TGSI_OPCODE_RSQ
;
506 return TGSI_OPCODE_SCS
;
508 return TGSI_OPCODE_SEQ
;
510 return TGSI_OPCODE_SGE
;
512 return TGSI_OPCODE_SGT
;
514 return TGSI_OPCODE_SIN
;
516 return TGSI_OPCODE_SLE
;
518 return TGSI_OPCODE_SLT
;
520 return TGSI_OPCODE_SNE
;
522 return TGSI_OPCODE_SSG
;
524 return TGSI_OPCODE_SUB
;
526 return TGSI_OPCODE_SWZ
;
528 return TGSI_OPCODE_TEX
;
530 return TGSI_OPCODE_TXB
;
532 return TGSI_OPCODE_TXD
;
534 return TGSI_OPCODE_TXL
;
536 return TGSI_OPCODE_TXP
;
538 return TGSI_OPCODE_XPD
;
540 return TGSI_OPCODE_END
;
543 return TGSI_OPCODE_NOP
;
550 struct st_translate
*t
,
551 const struct prog_instruction
*inst
)
553 struct ureg_program
*ureg
= t
->ureg
;
555 struct ureg_dst dst
[1];
556 struct ureg_src src
[4];
560 num_dst
= _mesa_num_inst_dst_regs( inst
->Opcode
);
561 num_src
= _mesa_num_inst_src_regs( inst
->Opcode
);
564 dst
[0] = translate_dst( t
,
566 inst
->SaturateMode
);
568 for (i
= 0; i
< num_src
; i
++)
569 src
[i
] = translate_src( t
, &inst
->SrcReg
[i
] );
571 switch( inst
->Opcode
) {
573 emit_swz( t
, dst
[0], &inst
->SrcReg
[0] );
581 assert(num_dst
== 0);
582 ureg_label_insn( ureg
,
583 translate_opcode( inst
->Opcode
),
585 get_label( t
, inst
->BranchTarget
));
593 src
[num_src
++] = t
->samplers
[inst
->TexSrcUnit
];
595 translate_opcode( inst
->Opcode
),
597 translate_texture_target( inst
->TexSrcTarget
,
603 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XY
);
605 translate_opcode( inst
->Opcode
),
611 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XYZ
);
613 translate_opcode( inst
->Opcode
),
620 translate_opcode( inst
->Opcode
),
629 * Emit the TGSI instructions for inverting the WPOS y coordinate.
632 emit_inverted_wpos( struct st_translate
*t
,
633 const struct gl_program
*program
)
635 struct ureg_program
*ureg
= t
->ureg
;
637 /* Fragment program uses fragment position input.
638 * Need to replace instances of INPUT[WPOS] with temp T
639 * where T = INPUT[WPOS] by y is inverted.
641 static const gl_state_index winSizeState
[STATE_LENGTH
]
642 = { STATE_INTERNAL
, STATE_FB_SIZE
, 0, 0, 0 };
644 /* XXX: note we are modifying the incoming shader here! Need to
645 * do this before emitting the constant decls below, or this
648 unsigned winHeightConst
= _mesa_add_state_reference(program
->Parameters
,
651 struct ureg_src winsize
= ureg_DECL_constant( ureg
, winHeightConst
);
652 struct ureg_dst wpos_temp
= ureg_DECL_temporary( ureg
);
653 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
655 /* MOV wpos_temp, input[wpos]
657 ureg_MOV( ureg
, wpos_temp
, wpos_input
);
659 /* SUB wpos_temp.y, winsize_const, wpos_input
662 ureg_writemask(wpos_temp
, TGSI_WRITEMASK_Y
),
666 /* Use wpos_temp as position input from here on:
668 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
673 * Translate Mesa program to TGSI format.
674 * \param program the program to translate
675 * \param numInputs number of input registers used
676 * \param inputMapping maps Mesa fragment program inputs to TGSI generic
678 * \param inputSemanticName the TGSI_SEMANTIC flag for each input
679 * \param inputSemanticIndex the semantic index (ex: which texcoord) for
681 * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
682 * \param numOutputs number of output registers used
683 * \param outputMapping maps Mesa fragment program outputs to TGSI
685 * \param outputSemanticName the TGSI_SEMANTIC flag for each output
686 * \param outputSemanticIndex the semantic index (ex: which texcoord) for
689 * \return array of translated tokens, caller's responsibility to free
691 const struct tgsi_token
*
692 st_translate_mesa_program(
695 const struct gl_program
*program
,
697 const GLuint inputMapping
[],
698 const ubyte inputSemanticName
[],
699 const ubyte inputSemanticIndex
[],
700 const GLuint interpMode
[],
701 const GLbitfield inputFlags
[],
703 const GLuint outputMapping
[],
704 const ubyte outputSemanticName
[],
705 const ubyte outputSemanticIndex
[],
706 const GLbitfield outputFlags
[] )
708 struct st_translate translate
, *t
;
709 struct ureg_program
*ureg
;
710 const struct tgsi_token
*tokens
= NULL
;
714 memset(t
, 0, sizeof *t
);
716 t
->procType
= procType
;
717 t
->inputMapping
= inputMapping
;
718 t
->outputMapping
= outputMapping
;
719 t
->ureg
= ureg_create( procType
);
725 /*_mesa_print_program(program);*/
728 * Declare input attributes.
730 if (procType
== TGSI_PROCESSOR_FRAGMENT
) {
731 for (i
= 0; i
< numInputs
; i
++) {
732 t
->inputs
[i
] = ureg_DECL_fs_input(ureg
,
733 inputSemanticName
[i
],
734 inputSemanticIndex
[i
],
738 if (program
->InputsRead
& FRAG_BIT_WPOS
) {
739 /* Must do this after setting up t->inputs, and before
740 * emitting constant references, below:
742 emit_inverted_wpos( t
, program
);
746 * Declare output attributes.
748 for (i
= 0; i
< numOutputs
; i
++) {
749 switch (outputSemanticName
[i
]) {
750 case TGSI_SEMANTIC_POSITION
:
751 t
->outputs
[i
] = ureg_DECL_output( ureg
,
752 TGSI_SEMANTIC_POSITION
, /* Z / Depth */
753 outputSemanticIndex
[i
] );
755 t
->outputs
[i
] = ureg_writemask( t
->outputs
[i
],
758 case TGSI_SEMANTIC_COLOR
:
759 t
->outputs
[i
] = ureg_DECL_output( ureg
,
761 outputSemanticIndex
[i
] );
770 for (i
= 0; i
< numInputs
; i
++) {
771 t
->inputs
[i
] = ureg_DECL_vs_input(ureg
, i
);
774 for (i
= 0; i
< numOutputs
; i
++) {
775 t
->outputs
[i
] = ureg_DECL_output( ureg
,
776 outputSemanticName
[i
],
777 outputSemanticIndex
[i
] );
781 /* Declare address register.
783 if (program
->NumAddressRegs
> 0) {
784 assert( program
->NumAddressRegs
== 1 );
785 t
->address
[0] = ureg_DECL_address( ureg
);
789 /* Emit constants and immediates. Mesa uses a single index space
790 * for these, so we put all the translated regs in t->constants.
792 if (program
->Parameters
) {
794 t
->constants
= CALLOC( program
->Parameters
->NumParameters
,
795 sizeof t
->constants
[0] );
796 if (t
->constants
== NULL
)
799 for (i
= 0; i
< program
->Parameters
->NumParameters
; i
++) {
800 switch (program
->Parameters
->Parameters
[i
].Type
) {
801 case PROGRAM_ENV_PARAM
:
802 case PROGRAM_STATE_VAR
:
803 case PROGRAM_NAMED_PARAM
:
804 case PROGRAM_UNIFORM
:
805 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
808 /* Emit immediates only when there is no address register
809 * in use. FIXME: Be smarter and recognize param arrays:
810 * indirect addressing is only valid within the referenced
813 case PROGRAM_CONSTANT
:
814 if (program
->NumAddressRegs
> 0)
815 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
818 ureg_DECL_immediate( ureg
,
819 program
->Parameters
->ParameterValues
[i
],
828 /* texture samplers */
829 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
830 if (program
->SamplersUsed
& (1 << i
)) {
831 t
->samplers
[i
] = ureg_DECL_sampler( ureg
, i
);
835 /* Emit each instruction in turn:
837 for (i
= 0; i
< program
->NumInstructions
; i
++) {
838 set_insn_start( t
, ureg_get_instruction_number( ureg
));
839 compile_instruction( t
, &program
->Instructions
[i
] );
842 /* Fix up all emitted labels:
844 for (i
= 0; i
< t
->labels_count
; i
++) {
845 ureg_fixup_label( ureg
,
847 t
->insn
[t
->labels
[i
].branch_target
] );
850 tokens
= ureg_get_tokens( ureg
, NULL
);
851 ureg_destroy( ureg
);
859 debug_printf("%s: translate error flag set\n", __FUNCTION__
);
860 FREE((void *)tokens
);
865 debug_printf("%s: failed to translate Mesa program:\n", __FUNCTION__
);
866 _mesa_print_program(program
);
875 * Tokens cannot be free with _mesa_free otherwise the builtin gallium
876 * malloc debugging will get confused.
879 st_free_tokens(const struct tgsi_token
*tokens
)
881 FREE((void *)tokens
);