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 "pipe/p_context.h"
38 #include "tgsi/tgsi_ureg.h"
39 #include "st_mesa_to_tgsi.h"
40 #include "st_context.h"
41 #include "shader/prog_instruction.h"
42 #include "shader/prog_parameter.h"
43 #include "util/u_debug.h"
44 #include "util/u_math.h"
45 #include "util/u_memory.h"
48 unsigned branch_target
;
54 * Intermediate state used during shader translation.
57 struct ureg_program
*ureg
;
59 struct ureg_dst temps
[MAX_PROGRAM_TEMPS
];
60 struct ureg_src
*constants
;
61 struct ureg_dst outputs
[PIPE_MAX_SHADER_OUTPUTS
];
62 struct ureg_src inputs
[PIPE_MAX_SHADER_INPUTS
];
63 struct ureg_dst address
[1];
64 struct ureg_src samplers
[PIPE_MAX_SAMPLERS
];
65 struct ureg_dst psizregreal
;
66 struct ureg_src pointSizeConst
;
68 GLboolean prevInstWrotePsiz
;
70 const GLuint
*inputMapping
;
71 const GLuint
*outputMapping
;
73 /* For every instruction that contains a label (eg CALL), keep
74 * details so that we can go back afterwards and emit the correct
75 * tgsi instruction number for each label.
79 unsigned labels_count
;
81 /* Keep a record of the tgsi instruction number that each mesa
82 * instruction starts at, will be used to fix up labels after
89 unsigned procType
; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */
95 static unsigned *get_label( struct st_translate
*t
,
96 unsigned branch_target
)
100 if (t
->labels_count
+ 1 >= t
->labels_size
) {
101 unsigned old_size
= t
->labels_size
;
102 t
->labels_size
= 1 << (util_logbase2(t
->labels_size
) + 1);
103 t
->labels
= REALLOC( t
->labels
,
104 old_size
* sizeof t
->labels
[0],
105 t
->labels_size
* sizeof t
->labels
[0] );
106 if (t
->labels
== NULL
) {
107 static unsigned dummy
;
113 i
= t
->labels_count
++;
114 t
->labels
[i
].branch_target
= branch_target
;
115 return &t
->labels
[i
].token
;
119 static void set_insn_start( struct st_translate
*t
,
122 if (t
->insn_count
+ 1 >= t
->insn_size
) {
123 unsigned old_size
= t
->insn_size
;
124 t
->insn_size
= 1 << (util_logbase2(t
->insn_size
) + 1);
125 t
->insn
= REALLOC( t
->insn
,
126 old_size
* sizeof t
->insn
[0],
127 t
->insn_size
* sizeof t
->insn
[0] );
128 if (t
->insn
== NULL
) {
134 t
->insn
[t
->insn_count
++] = start
;
139 * Map mesa register file to TGSI register file.
141 static struct ureg_dst
142 dst_register( struct st_translate
*t
,
143 gl_register_file file
,
147 case PROGRAM_UNDEFINED
:
148 return ureg_dst_undef();
150 case PROGRAM_TEMPORARY
:
151 if (ureg_dst_is_undef(t
->temps
[index
]))
152 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
154 return t
->temps
[index
];
157 if (index
== t
->psizoutindex
)
158 t
->prevInstWrotePsiz
= GL_TRUE
;
159 return t
->outputs
[t
->outputMapping
[index
]];
161 case PROGRAM_ADDRESS
:
162 return t
->address
[index
];
166 return ureg_dst_undef();
171 static struct ureg_src
172 src_register( struct st_translate
*t
,
173 gl_register_file file
,
177 case PROGRAM_UNDEFINED
:
178 return ureg_src_undef();
180 case PROGRAM_TEMPORARY
:
182 if (ureg_dst_is_undef(t
->temps
[index
]))
183 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
184 assert(index
< Elements(t
->temps
));
185 return ureg_src(t
->temps
[index
]);
187 case PROGRAM_NAMED_PARAM
:
188 case PROGRAM_ENV_PARAM
:
189 case PROGRAM_LOCAL_PARAM
:
190 case PROGRAM_UNIFORM
:
192 return t
->constants
[index
];
193 case PROGRAM_STATE_VAR
:
194 case PROGRAM_CONSTANT
: /* ie, immediate */
196 return ureg_DECL_constant( t
->ureg
, 0 );
198 return t
->constants
[index
];
201 assert(t
->inputMapping
[index
] < Elements(t
->inputs
));
202 return t
->inputs
[t
->inputMapping
[index
]];
205 assert(t
->outputMapping
[index
] < Elements(t
->outputs
));
206 return ureg_src(t
->outputs
[t
->outputMapping
[index
]]); /* not needed? */
208 case PROGRAM_ADDRESS
:
209 return ureg_src(t
->address
[index
]);
213 return ureg_src_undef();
219 * Map mesa texture target to TGSI texture target.
222 translate_texture_target( GLuint textarget
,
226 switch( textarget
) {
227 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_SHADOW1D
;
228 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_SHADOW2D
;
229 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_SHADOWRECT
;
234 switch( textarget
) {
235 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_1D
;
236 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_2D
;
237 case TEXTURE_3D_INDEX
: return TGSI_TEXTURE_3D
;
238 case TEXTURE_CUBE_INDEX
: return TGSI_TEXTURE_CUBE
;
239 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_RECT
;
242 return TGSI_TEXTURE_1D
;
247 static struct ureg_dst
248 translate_dst( struct st_translate
*t
,
249 const struct prog_dst_register
*DstReg
,
252 struct ureg_dst dst
= dst_register( t
,
256 dst
= ureg_writemask( dst
,
260 dst
= ureg_saturate( dst
);
263 dst
= ureg_dst_indirect( dst
, ureg_src(t
->address
[0]) );
269 static struct ureg_src
270 translate_src( struct st_translate
*t
,
271 const struct prog_src_register
*SrcReg
)
273 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
275 src
= ureg_swizzle( src
,
276 GET_SWZ( SrcReg
->Swizzle
, 0 ) & 0x3,
277 GET_SWZ( SrcReg
->Swizzle
, 1 ) & 0x3,
278 GET_SWZ( SrcReg
->Swizzle
, 2 ) & 0x3,
279 GET_SWZ( SrcReg
->Swizzle
, 3 ) & 0x3);
281 if (SrcReg
->Negate
== NEGATE_XYZW
)
282 src
= ureg_negate(src
);
287 if (SrcReg
->RelAddr
) {
288 src
= ureg_src_indirect( src
, ureg_src(t
->address
[0]));
289 /* If SrcReg->Index was negative, it was set to zero in
290 * src_register(). Reassign it now.
292 src
.Index
= SrcReg
->Index
;
299 static struct ureg_src
swizzle_4v( struct ureg_src src
,
300 const unsigned *swz
)
302 return ureg_swizzle( src
, swz
[0], swz
[1], swz
[2], swz
[3] );
307 * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG:
313 * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
315 static void emit_swz( struct st_translate
*t
,
317 const struct prog_src_register
*SrcReg
)
319 struct ureg_program
*ureg
= t
->ureg
;
320 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
322 unsigned negate_mask
= SrcReg
->Negate
;
324 unsigned one_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ONE
) << 0 |
325 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ONE
) << 1 |
326 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ONE
) << 2 |
327 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ONE
) << 3);
329 unsigned zero_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ZERO
) << 0 |
330 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ZERO
) << 1 |
331 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ZERO
) << 2 |
332 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ZERO
) << 3);
334 unsigned negative_one_mask
= one_mask
& negate_mask
;
335 unsigned positive_one_mask
= one_mask
& ~negate_mask
;
339 unsigned mul_swizzle
[4] = {0,0,0,0};
340 unsigned add_swizzle
[4] = {0,0,0,0};
341 unsigned src_swizzle
[4] = {0,0,0,0};
342 boolean need_add
= FALSE
;
343 boolean need_mul
= FALSE
;
345 if (dst
.WriteMask
== 0)
348 /* Is this just a MOV?
350 if (zero_mask
== 0 &&
352 (negate_mask
== 0 || negate_mask
== TGSI_WRITEMASK_XYZW
))
354 ureg_MOV( ureg
, dst
, translate_src( t
, SrcReg
));
360 #define IMM_NEG_ONE 2
362 imm
= ureg_imm3f( ureg
, 0, 1, -1 );
364 for (i
= 0; i
< 4; i
++) {
365 unsigned bit
= 1 << i
;
367 if (dst
.WriteMask
& bit
) {
368 if (positive_one_mask
& bit
) {
369 mul_swizzle
[i
] = IMM_ZERO
;
370 add_swizzle
[i
] = IMM_ONE
;
373 else if (negative_one_mask
& bit
) {
374 mul_swizzle
[i
] = IMM_ZERO
;
375 add_swizzle
[i
] = IMM_NEG_ONE
;
378 else if (zero_mask
& bit
) {
379 mul_swizzle
[i
] = IMM_ZERO
;
380 add_swizzle
[i
] = IMM_ZERO
;
384 add_swizzle
[i
] = IMM_ZERO
;
385 src_swizzle
[i
] = GET_SWZ(SrcReg
->Swizzle
, i
);
387 if (negate_mask
& bit
) {
388 mul_swizzle
[i
] = IMM_NEG_ONE
;
391 mul_swizzle
[i
] = IMM_ONE
;
397 if (need_mul
&& need_add
) {
400 swizzle_4v( src
, src_swizzle
),
401 swizzle_4v( imm
, mul_swizzle
),
402 swizzle_4v( imm
, add_swizzle
) );
407 swizzle_4v( src
, src_swizzle
),
408 swizzle_4v( imm
, mul_swizzle
) );
413 swizzle_4v( imm
, add_swizzle
) );
426 * Negate the value of DDY to match GL semantics where (0,0) is the
427 * lower-left corner of the window.
428 * Note that the GL_ARB_fragment_coord_conventions extension will
429 * effect this someday.
431 static void emit_ddy( struct st_translate
*t
,
433 const struct prog_src_register
*SrcReg
)
435 struct ureg_program
*ureg
= t
->ureg
;
436 struct ureg_src src
= translate_src( t
, SrcReg
);
437 src
= ureg_negate( src
);
438 ureg_DDY( ureg
, dst
, src
);
444 translate_opcode( unsigned op
)
448 return TGSI_OPCODE_ARL
;
450 return TGSI_OPCODE_ABS
;
452 return TGSI_OPCODE_ADD
;
454 return TGSI_OPCODE_BGNLOOP
;
456 return TGSI_OPCODE_BGNSUB
;
458 return TGSI_OPCODE_BRA
;
460 return TGSI_OPCODE_BRK
;
462 return TGSI_OPCODE_CAL
;
464 return TGSI_OPCODE_CMP
;
466 return TGSI_OPCODE_CONT
;
468 return TGSI_OPCODE_COS
;
470 return TGSI_OPCODE_DDX
;
472 return TGSI_OPCODE_DDY
;
474 return TGSI_OPCODE_DP2
;
476 return TGSI_OPCODE_DP2A
;
478 return TGSI_OPCODE_DP3
;
480 return TGSI_OPCODE_DP4
;
482 return TGSI_OPCODE_DPH
;
484 return TGSI_OPCODE_DST
;
486 return TGSI_OPCODE_ELSE
;
488 return TGSI_OPCODE_ENDIF
;
490 return TGSI_OPCODE_ENDLOOP
;
492 return TGSI_OPCODE_ENDSUB
;
494 return TGSI_OPCODE_EX2
;
496 return TGSI_OPCODE_EXP
;
498 return TGSI_OPCODE_FLR
;
500 return TGSI_OPCODE_FRC
;
502 return TGSI_OPCODE_IF
;
504 return TGSI_OPCODE_TRUNC
;
506 return TGSI_OPCODE_KIL
;
508 return TGSI_OPCODE_KILP
;
510 return TGSI_OPCODE_LG2
;
512 return TGSI_OPCODE_LOG
;
514 return TGSI_OPCODE_LIT
;
516 return TGSI_OPCODE_LRP
;
518 return TGSI_OPCODE_MAD
;
520 return TGSI_OPCODE_MAX
;
522 return TGSI_OPCODE_MIN
;
524 return TGSI_OPCODE_MOV
;
526 return TGSI_OPCODE_MUL
;
528 return TGSI_OPCODE_NOP
;
530 return TGSI_OPCODE_NRM
;
532 return TGSI_OPCODE_NRM4
;
534 return TGSI_OPCODE_POW
;
536 return TGSI_OPCODE_RCP
;
538 return TGSI_OPCODE_RET
;
540 return TGSI_OPCODE_RSQ
;
542 return TGSI_OPCODE_SCS
;
544 return TGSI_OPCODE_SEQ
;
546 return TGSI_OPCODE_SGE
;
548 return TGSI_OPCODE_SGT
;
550 return TGSI_OPCODE_SIN
;
552 return TGSI_OPCODE_SLE
;
554 return TGSI_OPCODE_SLT
;
556 return TGSI_OPCODE_SNE
;
558 return TGSI_OPCODE_SSG
;
560 return TGSI_OPCODE_SUB
;
562 return TGSI_OPCODE_TEX
;
564 return TGSI_OPCODE_TXB
;
566 return TGSI_OPCODE_TXD
;
568 return TGSI_OPCODE_TXL
;
570 return TGSI_OPCODE_TXP
;
572 return TGSI_OPCODE_XPD
;
574 return TGSI_OPCODE_END
;
577 return TGSI_OPCODE_NOP
;
584 struct st_translate
*t
,
585 const struct prog_instruction
*inst
)
587 struct ureg_program
*ureg
= t
->ureg
;
589 struct ureg_dst dst
[1];
590 struct ureg_src src
[4];
594 num_dst
= _mesa_num_inst_dst_regs( inst
->Opcode
);
595 num_src
= _mesa_num_inst_src_regs( inst
->Opcode
);
598 dst
[0] = translate_dst( t
,
600 inst
->SaturateMode
);
602 for (i
= 0; i
< num_src
; i
++)
603 src
[i
] = translate_src( t
, &inst
->SrcReg
[i
] );
605 switch( inst
->Opcode
) {
607 emit_swz( t
, dst
[0], &inst
->SrcReg
[0] );
615 debug_assert(num_dst
== 0);
616 ureg_label_insn( ureg
,
617 translate_opcode( inst
->Opcode
),
619 get_label( t
, inst
->BranchTarget
));
627 src
[num_src
++] = t
->samplers
[inst
->TexSrcUnit
];
629 translate_opcode( inst
->Opcode
),
631 translate_texture_target( inst
->TexSrcTarget
,
637 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XY
);
639 translate_opcode( inst
->Opcode
),
645 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XYZ
);
647 translate_opcode( inst
->Opcode
),
656 /* At some point, a motivated person could add a better
657 * implementation of noise. Currently not even the nvidia
658 * binary drivers do anything more than this. In any case, the
659 * place to do this is in the GL state tracker, not the poor
662 ureg_MOV( ureg
, dst
[0], ureg_imm1f(ureg
, 0.5) );
666 emit_ddy( t
, dst
[0], &inst
->SrcReg
[0] );
671 translate_opcode( inst
->Opcode
),
679 * Emit the TGSI instructions to adjust the WPOS pixel center convention
682 emit_adjusted_wpos( struct st_translate
*t
,
683 const struct gl_program
*program
, GLfloat value
)
685 struct ureg_program
*ureg
= t
->ureg
;
686 struct ureg_dst wpos_temp
= ureg_DECL_temporary(ureg
);
687 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
689 ureg_ADD(ureg
, ureg_writemask(wpos_temp
, TGSI_WRITEMASK_X
| TGSI_WRITEMASK_Y
),
690 wpos_input
, ureg_imm1f(ureg
, value
));
692 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
696 * Emit the TGSI instructions for inverting the WPOS y coordinate.
699 emit_inverted_wpos( struct st_translate
*t
,
700 const struct gl_program
*program
)
702 struct ureg_program
*ureg
= t
->ureg
;
704 /* Fragment program uses fragment position input.
705 * Need to replace instances of INPUT[WPOS] with temp T
706 * where T = INPUT[WPOS] by y is inverted.
708 static const gl_state_index winSizeState
[STATE_LENGTH
]
709 = { STATE_INTERNAL
, STATE_FB_SIZE
, 0, 0, 0 };
711 /* XXX: note we are modifying the incoming shader here! Need to
712 * do this before emitting the constant decls below, or this
715 unsigned winHeightConst
= _mesa_add_state_reference(program
->Parameters
,
718 struct ureg_src winsize
= ureg_DECL_constant( ureg
, winHeightConst
);
719 struct ureg_dst wpos_temp
;
720 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
722 /* MOV wpos_temp, input[wpos]
724 if (wpos_input
.File
== TGSI_FILE_TEMPORARY
)
725 wpos_temp
= ureg_dst(wpos_input
);
727 wpos_temp
= ureg_DECL_temporary( ureg
);
728 ureg_MOV( ureg
, wpos_temp
, wpos_input
);
731 /* SUB wpos_temp.y, winsize_const, wpos_input
734 ureg_writemask(wpos_temp
, TGSI_WRITEMASK_Y
),
738 /* Use wpos_temp as position input from here on:
740 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
745 * Emit fragment position/ooordinate code.
748 emit_wpos(struct st_context
*st
,
749 struct st_translate
*t
,
750 const struct gl_program
*program
,
751 struct ureg_program
*ureg
)
753 const struct gl_fragment_program
*fp
=
754 (const struct gl_fragment_program
*) program
;
755 struct pipe_screen
*pscreen
= st
->pipe
->screen
;
756 boolean invert
= FALSE
;
758 if (fp
->OriginUpperLeft
) {
759 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
)) {
761 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
)) {
762 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
769 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
))
770 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
771 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
))
777 if (fp
->PixelCenterInteger
) {
778 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
))
779 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
780 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
))
781 emit_adjusted_wpos(t
, program
, invert
? 0.5f
: -0.5f
);
786 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
)) {
788 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
)) {
789 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
790 emit_adjusted_wpos(t
, program
, invert
? -0.5f
: 0.5f
);
796 /* we invert after adjustment so that we avoid the MOV to temporary,
797 * and reuse the adjustment ADD instead */
799 emit_inverted_wpos(t
, program
);
804 * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
805 * TGSI uses +1 for front, -1 for back.
806 * This function converts the TGSI value to the GL value. Simply clamping/
807 * saturating the value to [0,1] does the job.
810 emit_face_var( struct st_translate
*t
,
811 const struct gl_program
*program
)
813 struct ureg_program
*ureg
= t
->ureg
;
814 struct ureg_dst face_temp
= ureg_DECL_temporary( ureg
);
815 struct ureg_src face_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]];
817 /* MOV_SAT face_temp, input[face]
819 face_temp
= ureg_saturate( face_temp
);
820 ureg_MOV( ureg
, face_temp
, face_input
);
822 /* Use face_temp as face input from here on:
824 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]] = ureg_src(face_temp
);
829 emit_edgeflags( struct st_translate
*t
,
830 const struct gl_program
*program
)
832 struct ureg_program
*ureg
= t
->ureg
;
833 struct ureg_dst edge_dst
= t
->outputs
[t
->outputMapping
[VERT_RESULT_EDGE
]];
834 struct ureg_src edge_src
= t
->inputs
[t
->inputMapping
[VERT_ATTRIB_EDGEFLAG
]];
836 ureg_MOV( ureg
, edge_dst
, edge_src
);
841 * Translate Mesa program to TGSI format.
842 * \param program the program to translate
843 * \param numInputs number of input registers used
844 * \param inputMapping maps Mesa fragment program inputs to TGSI generic
846 * \param inputSemanticName the TGSI_SEMANTIC flag for each input
847 * \param inputSemanticIndex the semantic index (ex: which texcoord) for
849 * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
850 * \param numOutputs number of output registers used
851 * \param outputMapping maps Mesa fragment program outputs to TGSI
853 * \param outputSemanticName the TGSI_SEMANTIC flag for each output
854 * \param outputSemanticIndex the semantic index (ex: which texcoord) for
857 * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
860 st_translate_mesa_program(
863 struct ureg_program
*ureg
,
864 const struct gl_program
*program
,
866 const GLuint inputMapping
[],
867 const ubyte inputSemanticName
[],
868 const ubyte inputSemanticIndex
[],
869 const GLuint interpMode
[],
871 const GLuint outputMapping
[],
872 const ubyte outputSemanticName
[],
873 const ubyte outputSemanticIndex
[],
874 boolean passthrough_edgeflags
)
876 struct st_translate translate
, *t
;
878 enum pipe_error ret
= PIPE_OK
;
881 memset(t
, 0, sizeof *t
);
883 t
->procType
= procType
;
884 t
->inputMapping
= inputMapping
;
885 t
->outputMapping
= outputMapping
;
887 t
->psizoutindex
= -1;
888 t
->prevInstWrotePsiz
= GL_FALSE
;
890 /*_mesa_print_program(program);*/
893 * Declare input attributes.
895 if (procType
== TGSI_PROCESSOR_FRAGMENT
) {
896 for (i
= 0; i
< numInputs
; i
++) {
897 if (program
->InputFlags
[0] & PROG_PARAM_BIT_CYL_WRAP
) {
898 t
->inputs
[i
] = ureg_DECL_fs_input_cyl(ureg
,
899 inputSemanticName
[i
],
900 inputSemanticIndex
[i
],
902 TGSI_CYLINDRICAL_WRAP_X
);
905 t
->inputs
[i
] = ureg_DECL_fs_input(ureg
,
906 inputSemanticName
[i
],
907 inputSemanticIndex
[i
],
912 if (program
->InputsRead
& FRAG_BIT_WPOS
) {
913 /* Must do this after setting up t->inputs, and before
914 * emitting constant references, below:
916 emit_wpos(st_context(ctx
), t
, program
, ureg
);
919 if (program
->InputsRead
& FRAG_BIT_FACE
) {
920 emit_face_var( t
, program
);
924 * Declare output attributes.
926 for (i
= 0; i
< numOutputs
; i
++) {
927 switch (outputSemanticName
[i
]) {
928 case TGSI_SEMANTIC_POSITION
:
929 t
->outputs
[i
] = ureg_DECL_output( ureg
,
930 TGSI_SEMANTIC_POSITION
, /* Z / Depth */
931 outputSemanticIndex
[i
] );
933 t
->outputs
[i
] = ureg_writemask( t
->outputs
[i
],
936 case TGSI_SEMANTIC_COLOR
:
937 t
->outputs
[i
] = ureg_DECL_output( ureg
,
939 outputSemanticIndex
[i
] );
948 for (i
= 0; i
< numInputs
; i
++) {
949 t
->inputs
[i
] = ureg_DECL_vs_input(ureg
, i
);
952 for (i
= 0; i
< numOutputs
; i
++) {
953 t
->outputs
[i
] = ureg_DECL_output( ureg
,
954 outputSemanticName
[i
],
955 outputSemanticIndex
[i
] );
956 if ((outputSemanticName
[i
] == TGSI_SEMANTIC_PSIZE
) && program
->Id
) {
957 static const gl_state_index pointSizeClampState
[STATE_LENGTH
]
958 = { STATE_INTERNAL
, STATE_POINT_SIZE_IMPL_CLAMP
, 0, 0, 0 };
959 /* XXX: note we are modifying the incoming shader here! Need to
960 * do this before emitting the constant decls below, or this
963 unsigned pointSizeClampConst
=
964 _mesa_add_state_reference(program
->Parameters
,
965 pointSizeClampState
);
966 struct ureg_dst psizregtemp
= ureg_DECL_temporary( ureg
);
967 t
->pointSizeConst
= ureg_DECL_constant( ureg
, pointSizeClampConst
);
968 t
->psizregreal
= t
->outputs
[i
];
970 t
->outputs
[i
] = psizregtemp
;
973 if (passthrough_edgeflags
)
974 emit_edgeflags( t
, program
);
977 /* Declare address register.
979 if (program
->NumAddressRegs
> 0) {
980 debug_assert( program
->NumAddressRegs
== 1 );
981 t
->address
[0] = ureg_DECL_address( ureg
);
984 /* Emit constants and immediates. Mesa uses a single index space
985 * for these, so we put all the translated regs in t->constants.
987 if (program
->Parameters
) {
988 t
->constants
= CALLOC( program
->Parameters
->NumParameters
,
989 sizeof t
->constants
[0] );
990 if (t
->constants
== NULL
) {
991 ret
= PIPE_ERROR_OUT_OF_MEMORY
;
995 for (i
= 0; i
< program
->Parameters
->NumParameters
; i
++) {
996 switch (program
->Parameters
->Parameters
[i
].Type
) {
997 case PROGRAM_ENV_PARAM
:
998 case PROGRAM_LOCAL_PARAM
:
999 case PROGRAM_STATE_VAR
:
1000 case PROGRAM_NAMED_PARAM
:
1001 case PROGRAM_UNIFORM
:
1002 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
1005 /* Emit immediates only when there is no address register
1006 * in use. FIXME: Be smarter and recognize param arrays:
1007 * indirect addressing is only valid within the referenced
1010 case PROGRAM_CONSTANT
:
1011 if (program
->NumAddressRegs
> 0)
1012 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
1015 ureg_DECL_immediate( ureg
,
1016 program
->Parameters
->ParameterValues
[i
],
1025 /* texture samplers */
1026 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
1027 if (program
->SamplersUsed
& (1 << i
)) {
1028 t
->samplers
[i
] = ureg_DECL_sampler( ureg
, i
);
1032 /* Emit each instruction in turn:
1034 for (i
= 0; i
< program
->NumInstructions
; i
++) {
1035 set_insn_start( t
, ureg_get_instruction_number( ureg
));
1036 compile_instruction( t
, &program
->Instructions
[i
] );
1038 /* note can't do that easily at the end of prog due to
1039 possible early return */
1040 if (t
->prevInstWrotePsiz
&& program
->Id
) {
1041 set_insn_start( t
, ureg_get_instruction_number( ureg
));
1043 ureg_writemask(t
->outputs
[t
->psizoutindex
], WRITEMASK_X
),
1044 ureg_src(t
->outputs
[t
->psizoutindex
]),
1045 ureg_swizzle(t
->pointSizeConst
, 1,1,1,1));
1046 ureg_MIN( t
->ureg
, ureg_writemask(t
->psizregreal
, WRITEMASK_X
),
1047 ureg_src(t
->outputs
[t
->psizoutindex
]),
1048 ureg_swizzle(t
->pointSizeConst
, 2,2,2,2));
1050 t
->prevInstWrotePsiz
= GL_FALSE
;
1053 /* Fix up all emitted labels:
1055 for (i
= 0; i
< t
->labels_count
; i
++) {
1056 ureg_fixup_label( ureg
,
1058 t
->insn
[t
->labels
[i
].branch_target
] );
1067 debug_printf("%s: translate error flag set\n", __FUNCTION__
);
1075 * Tokens cannot be free with free otherwise the builtin gallium
1076 * malloc debugging will get confused.
1079 st_free_tokens(const struct tgsi_token
*tokens
)
1081 FREE((void *)tokens
);