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 (t
->procType
== TGSI_PROCESSOR_VERTEX
&& index
== VERT_RESULT_PSIZ
)
158 t
->prevInstWrotePsiz
= GL_TRUE
;
160 if (t
->procType
== TGSI_PROCESSOR_VERTEX
)
161 assert(index
< VERT_RESULT_MAX
);
162 else if (t
->procType
== TGSI_PROCESSOR_FRAGMENT
)
163 assert(index
< FRAG_RESULT_MAX
);
165 assert(0 && "geom shaders not handled in dst_register() yet");
167 assert(t
->outputMapping
[index
] < Elements(t
->outputs
));
169 return t
->outputs
[t
->outputMapping
[index
]];
171 case PROGRAM_ADDRESS
:
172 return t
->address
[index
];
176 return ureg_dst_undef();
181 static struct ureg_src
182 src_register( struct st_translate
*t
,
183 gl_register_file file
,
187 case PROGRAM_UNDEFINED
:
188 return ureg_src_undef();
190 case PROGRAM_TEMPORARY
:
192 if (ureg_dst_is_undef(t
->temps
[index
]))
193 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
194 assert(index
< Elements(t
->temps
));
195 return ureg_src(t
->temps
[index
]);
197 case PROGRAM_NAMED_PARAM
:
198 case PROGRAM_ENV_PARAM
:
199 case PROGRAM_LOCAL_PARAM
:
200 case PROGRAM_UNIFORM
:
202 return t
->constants
[index
];
203 case PROGRAM_STATE_VAR
:
204 case PROGRAM_CONSTANT
: /* ie, immediate */
206 return ureg_DECL_constant( t
->ureg
, 0 );
208 return t
->constants
[index
];
211 assert(t
->inputMapping
[index
] < Elements(t
->inputs
));
212 return t
->inputs
[t
->inputMapping
[index
]];
215 assert(t
->outputMapping
[index
] < Elements(t
->outputs
));
216 return ureg_src(t
->outputs
[t
->outputMapping
[index
]]); /* not needed? */
218 case PROGRAM_ADDRESS
:
219 return ureg_src(t
->address
[index
]);
223 return ureg_src_undef();
229 * Map mesa texture target to TGSI texture target.
232 translate_texture_target( GLuint textarget
,
236 switch( textarget
) {
237 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_SHADOW1D
;
238 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_SHADOW2D
;
239 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_SHADOWRECT
;
244 switch( textarget
) {
245 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_1D
;
246 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_2D
;
247 case TEXTURE_3D_INDEX
: return TGSI_TEXTURE_3D
;
248 case TEXTURE_CUBE_INDEX
: return TGSI_TEXTURE_CUBE
;
249 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_RECT
;
252 return TGSI_TEXTURE_1D
;
257 static struct ureg_dst
258 translate_dst( struct st_translate
*t
,
259 const struct prog_dst_register
*DstReg
,
262 struct ureg_dst dst
= dst_register( t
,
266 dst
= ureg_writemask( dst
,
270 dst
= ureg_saturate( dst
);
273 dst
= ureg_dst_indirect( dst
, ureg_src(t
->address
[0]) );
279 static struct ureg_src
280 translate_src( struct st_translate
*t
,
281 const struct prog_src_register
*SrcReg
)
283 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
285 src
= ureg_swizzle( src
,
286 GET_SWZ( SrcReg
->Swizzle
, 0 ) & 0x3,
287 GET_SWZ( SrcReg
->Swizzle
, 1 ) & 0x3,
288 GET_SWZ( SrcReg
->Swizzle
, 2 ) & 0x3,
289 GET_SWZ( SrcReg
->Swizzle
, 3 ) & 0x3);
291 if (SrcReg
->Negate
== NEGATE_XYZW
)
292 src
= ureg_negate(src
);
297 if (SrcReg
->RelAddr
) {
298 src
= ureg_src_indirect( src
, ureg_src(t
->address
[0]));
299 /* If SrcReg->Index was negative, it was set to zero in
300 * src_register(). Reassign it now.
302 src
.Index
= SrcReg
->Index
;
309 static struct ureg_src
swizzle_4v( struct ureg_src src
,
310 const unsigned *swz
)
312 return ureg_swizzle( src
, swz
[0], swz
[1], swz
[2], swz
[3] );
317 * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG:
323 * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
325 static void emit_swz( struct st_translate
*t
,
327 const struct prog_src_register
*SrcReg
)
329 struct ureg_program
*ureg
= t
->ureg
;
330 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
332 unsigned negate_mask
= SrcReg
->Negate
;
334 unsigned one_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ONE
) << 0 |
335 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ONE
) << 1 |
336 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ONE
) << 2 |
337 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ONE
) << 3);
339 unsigned zero_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ZERO
) << 0 |
340 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ZERO
) << 1 |
341 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ZERO
) << 2 |
342 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ZERO
) << 3);
344 unsigned negative_one_mask
= one_mask
& negate_mask
;
345 unsigned positive_one_mask
= one_mask
& ~negate_mask
;
349 unsigned mul_swizzle
[4] = {0,0,0,0};
350 unsigned add_swizzle
[4] = {0,0,0,0};
351 unsigned src_swizzle
[4] = {0,0,0,0};
352 boolean need_add
= FALSE
;
353 boolean need_mul
= FALSE
;
355 if (dst
.WriteMask
== 0)
358 /* Is this just a MOV?
360 if (zero_mask
== 0 &&
362 (negate_mask
== 0 || negate_mask
== TGSI_WRITEMASK_XYZW
))
364 ureg_MOV( ureg
, dst
, translate_src( t
, SrcReg
));
370 #define IMM_NEG_ONE 2
372 imm
= ureg_imm3f( ureg
, 0, 1, -1 );
374 for (i
= 0; i
< 4; i
++) {
375 unsigned bit
= 1 << i
;
377 if (dst
.WriteMask
& bit
) {
378 if (positive_one_mask
& bit
) {
379 mul_swizzle
[i
] = IMM_ZERO
;
380 add_swizzle
[i
] = IMM_ONE
;
383 else if (negative_one_mask
& bit
) {
384 mul_swizzle
[i
] = IMM_ZERO
;
385 add_swizzle
[i
] = IMM_NEG_ONE
;
388 else if (zero_mask
& bit
) {
389 mul_swizzle
[i
] = IMM_ZERO
;
390 add_swizzle
[i
] = IMM_ZERO
;
394 add_swizzle
[i
] = IMM_ZERO
;
395 src_swizzle
[i
] = GET_SWZ(SrcReg
->Swizzle
, i
);
397 if (negate_mask
& bit
) {
398 mul_swizzle
[i
] = IMM_NEG_ONE
;
401 mul_swizzle
[i
] = IMM_ONE
;
407 if (need_mul
&& need_add
) {
410 swizzle_4v( src
, src_swizzle
),
411 swizzle_4v( imm
, mul_swizzle
),
412 swizzle_4v( imm
, add_swizzle
) );
417 swizzle_4v( src
, src_swizzle
),
418 swizzle_4v( imm
, mul_swizzle
) );
423 swizzle_4v( imm
, add_swizzle
) );
436 * Negate the value of DDY to match GL semantics where (0,0) is the
437 * lower-left corner of the window.
438 * Note that the GL_ARB_fragment_coord_conventions extension will
439 * effect this someday.
441 static void emit_ddy( struct st_translate
*t
,
443 const struct prog_src_register
*SrcReg
)
445 struct ureg_program
*ureg
= t
->ureg
;
446 struct ureg_src src
= translate_src( t
, SrcReg
);
447 src
= ureg_negate( src
);
448 ureg_DDY( ureg
, dst
, src
);
454 translate_opcode( unsigned op
)
458 return TGSI_OPCODE_ARL
;
460 return TGSI_OPCODE_ABS
;
462 return TGSI_OPCODE_ADD
;
464 return TGSI_OPCODE_BGNLOOP
;
466 return TGSI_OPCODE_BGNSUB
;
468 return TGSI_OPCODE_BRA
;
470 return TGSI_OPCODE_BRK
;
472 return TGSI_OPCODE_CAL
;
474 return TGSI_OPCODE_CMP
;
476 return TGSI_OPCODE_CONT
;
478 return TGSI_OPCODE_COS
;
480 return TGSI_OPCODE_DDX
;
482 return TGSI_OPCODE_DDY
;
484 return TGSI_OPCODE_DP2
;
486 return TGSI_OPCODE_DP2A
;
488 return TGSI_OPCODE_DP3
;
490 return TGSI_OPCODE_DP4
;
492 return TGSI_OPCODE_DPH
;
494 return TGSI_OPCODE_DST
;
496 return TGSI_OPCODE_ELSE
;
498 return TGSI_OPCODE_ENDIF
;
500 return TGSI_OPCODE_ENDLOOP
;
502 return TGSI_OPCODE_ENDSUB
;
504 return TGSI_OPCODE_EX2
;
506 return TGSI_OPCODE_EXP
;
508 return TGSI_OPCODE_FLR
;
510 return TGSI_OPCODE_FRC
;
512 return TGSI_OPCODE_IF
;
514 return TGSI_OPCODE_TRUNC
;
516 return TGSI_OPCODE_KIL
;
518 return TGSI_OPCODE_KILP
;
520 return TGSI_OPCODE_LG2
;
522 return TGSI_OPCODE_LOG
;
524 return TGSI_OPCODE_LIT
;
526 return TGSI_OPCODE_LRP
;
528 return TGSI_OPCODE_MAD
;
530 return TGSI_OPCODE_MAX
;
532 return TGSI_OPCODE_MIN
;
534 return TGSI_OPCODE_MOV
;
536 return TGSI_OPCODE_MUL
;
538 return TGSI_OPCODE_NOP
;
540 return TGSI_OPCODE_NRM
;
542 return TGSI_OPCODE_NRM4
;
544 return TGSI_OPCODE_POW
;
546 return TGSI_OPCODE_RCP
;
548 return TGSI_OPCODE_RET
;
550 return TGSI_OPCODE_RSQ
;
552 return TGSI_OPCODE_SCS
;
554 return TGSI_OPCODE_SEQ
;
556 return TGSI_OPCODE_SGE
;
558 return TGSI_OPCODE_SGT
;
560 return TGSI_OPCODE_SIN
;
562 return TGSI_OPCODE_SLE
;
564 return TGSI_OPCODE_SLT
;
566 return TGSI_OPCODE_SNE
;
568 return TGSI_OPCODE_SSG
;
570 return TGSI_OPCODE_SUB
;
572 return TGSI_OPCODE_TEX
;
574 return TGSI_OPCODE_TXB
;
576 return TGSI_OPCODE_TXD
;
578 return TGSI_OPCODE_TXL
;
580 return TGSI_OPCODE_TXP
;
582 return TGSI_OPCODE_XPD
;
584 return TGSI_OPCODE_END
;
587 return TGSI_OPCODE_NOP
;
594 struct st_translate
*t
,
595 const struct prog_instruction
*inst
)
597 struct ureg_program
*ureg
= t
->ureg
;
599 struct ureg_dst dst
[1];
600 struct ureg_src src
[4];
604 num_dst
= _mesa_num_inst_dst_regs( inst
->Opcode
);
605 num_src
= _mesa_num_inst_src_regs( inst
->Opcode
);
608 dst
[0] = translate_dst( t
,
610 inst
->SaturateMode
);
612 for (i
= 0; i
< num_src
; i
++)
613 src
[i
] = translate_src( t
, &inst
->SrcReg
[i
] );
615 switch( inst
->Opcode
) {
617 emit_swz( t
, dst
[0], &inst
->SrcReg
[0] );
625 debug_assert(num_dst
== 0);
626 ureg_label_insn( ureg
,
627 translate_opcode( inst
->Opcode
),
629 get_label( t
, inst
->BranchTarget
));
637 src
[num_src
++] = t
->samplers
[inst
->TexSrcUnit
];
639 translate_opcode( inst
->Opcode
),
641 translate_texture_target( inst
->TexSrcTarget
,
647 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XY
);
649 translate_opcode( inst
->Opcode
),
655 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XYZ
);
657 translate_opcode( inst
->Opcode
),
666 /* At some point, a motivated person could add a better
667 * implementation of noise. Currently not even the nvidia
668 * binary drivers do anything more than this. In any case, the
669 * place to do this is in the GL state tracker, not the poor
672 ureg_MOV( ureg
, dst
[0], ureg_imm1f(ureg
, 0.5) );
676 emit_ddy( t
, dst
[0], &inst
->SrcReg
[0] );
681 translate_opcode( inst
->Opcode
),
689 * Emit the TGSI instructions to adjust the WPOS pixel center convention
692 emit_adjusted_wpos( struct st_translate
*t
,
693 const struct gl_program
*program
, GLfloat value
)
695 struct ureg_program
*ureg
= t
->ureg
;
696 struct ureg_dst wpos_temp
= ureg_DECL_temporary(ureg
);
697 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
699 ureg_ADD(ureg
, ureg_writemask(wpos_temp
, TGSI_WRITEMASK_X
| TGSI_WRITEMASK_Y
),
700 wpos_input
, ureg_imm1f(ureg
, value
));
702 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
706 * Emit the TGSI instructions for inverting the WPOS y coordinate.
709 emit_inverted_wpos( struct st_translate
*t
,
710 const struct gl_program
*program
)
712 struct ureg_program
*ureg
= t
->ureg
;
714 /* Fragment program uses fragment position input.
715 * Need to replace instances of INPUT[WPOS] with temp T
716 * where T = INPUT[WPOS] by y is inverted.
718 static const gl_state_index winSizeState
[STATE_LENGTH
]
719 = { STATE_INTERNAL
, STATE_FB_SIZE
, 0, 0, 0 };
721 /* XXX: note we are modifying the incoming shader here! Need to
722 * do this before emitting the constant decls below, or this
725 unsigned winHeightConst
= _mesa_add_state_reference(program
->Parameters
,
728 struct ureg_src winsize
= ureg_DECL_constant( ureg
, winHeightConst
);
729 struct ureg_dst wpos_temp
;
730 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
732 /* MOV wpos_temp, input[wpos]
734 if (wpos_input
.File
== TGSI_FILE_TEMPORARY
)
735 wpos_temp
= ureg_dst(wpos_input
);
737 wpos_temp
= ureg_DECL_temporary( ureg
);
738 ureg_MOV( ureg
, wpos_temp
, wpos_input
);
741 /* SUB wpos_temp.y, winsize_const, wpos_input
744 ureg_writemask(wpos_temp
, TGSI_WRITEMASK_Y
),
748 /* Use wpos_temp as position input from here on:
750 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
755 * Emit fragment position/ooordinate code.
758 emit_wpos(struct st_context
*st
,
759 struct st_translate
*t
,
760 const struct gl_program
*program
,
761 struct ureg_program
*ureg
)
763 const struct gl_fragment_program
*fp
=
764 (const struct gl_fragment_program
*) program
;
765 struct pipe_screen
*pscreen
= st
->pipe
->screen
;
766 boolean invert
= FALSE
;
768 if (fp
->OriginUpperLeft
) {
769 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
)) {
771 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
)) {
772 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
779 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
))
780 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
781 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
))
787 if (fp
->PixelCenterInteger
) {
788 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 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
))
791 emit_adjusted_wpos(t
, program
, invert
? 0.5f
: -0.5f
);
796 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
)) {
798 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
)) {
799 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
800 emit_adjusted_wpos(t
, program
, invert
? -0.5f
: 0.5f
);
806 /* we invert after adjustment so that we avoid the MOV to temporary,
807 * and reuse the adjustment ADD instead */
809 emit_inverted_wpos(t
, program
);
814 * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
815 * TGSI uses +1 for front, -1 for back.
816 * This function converts the TGSI value to the GL value. Simply clamping/
817 * saturating the value to [0,1] does the job.
820 emit_face_var( struct st_translate
*t
,
821 const struct gl_program
*program
)
823 struct ureg_program
*ureg
= t
->ureg
;
824 struct ureg_dst face_temp
= ureg_DECL_temporary( ureg
);
825 struct ureg_src face_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]];
827 /* MOV_SAT face_temp, input[face]
829 face_temp
= ureg_saturate( face_temp
);
830 ureg_MOV( ureg
, face_temp
, face_input
);
832 /* Use face_temp as face input from here on:
834 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]] = ureg_src(face_temp
);
839 emit_edgeflags( struct st_translate
*t
,
840 const struct gl_program
*program
)
842 struct ureg_program
*ureg
= t
->ureg
;
843 struct ureg_dst edge_dst
= t
->outputs
[t
->outputMapping
[VERT_RESULT_EDGE
]];
844 struct ureg_src edge_src
= t
->inputs
[t
->inputMapping
[VERT_ATTRIB_EDGEFLAG
]];
846 ureg_MOV( ureg
, edge_dst
, edge_src
);
851 * Translate Mesa program to TGSI format.
852 * \param program the program to translate
853 * \param numInputs number of input registers used
854 * \param inputMapping maps Mesa fragment program inputs to TGSI generic
856 * \param inputSemanticName the TGSI_SEMANTIC flag for each input
857 * \param inputSemanticIndex the semantic index (ex: which texcoord) for
859 * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
860 * \param numOutputs number of output registers used
861 * \param outputMapping maps Mesa fragment program outputs to TGSI
863 * \param outputSemanticName the TGSI_SEMANTIC flag for each output
864 * \param outputSemanticIndex the semantic index (ex: which texcoord) for
867 * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
870 st_translate_mesa_program(
873 struct ureg_program
*ureg
,
874 const struct gl_program
*program
,
876 const GLuint inputMapping
[],
877 const ubyte inputSemanticName
[],
878 const ubyte inputSemanticIndex
[],
879 const GLuint interpMode
[],
881 const GLuint outputMapping
[],
882 const ubyte outputSemanticName
[],
883 const ubyte outputSemanticIndex
[],
884 boolean passthrough_edgeflags
)
886 struct st_translate translate
, *t
;
888 enum pipe_error ret
= PIPE_OK
;
891 memset(t
, 0, sizeof *t
);
893 t
->procType
= procType
;
894 t
->inputMapping
= inputMapping
;
895 t
->outputMapping
= outputMapping
;
897 t
->psizoutindex
= -1;
898 t
->prevInstWrotePsiz
= GL_FALSE
;
900 /*_mesa_print_program(program);*/
903 * Declare input attributes.
905 if (procType
== TGSI_PROCESSOR_FRAGMENT
) {
906 for (i
= 0; i
< numInputs
; i
++) {
907 if (program
->InputFlags
[0] & PROG_PARAM_BIT_CYL_WRAP
) {
908 t
->inputs
[i
] = ureg_DECL_fs_input_cyl(ureg
,
909 inputSemanticName
[i
],
910 inputSemanticIndex
[i
],
912 TGSI_CYLINDRICAL_WRAP_X
);
915 t
->inputs
[i
] = ureg_DECL_fs_input(ureg
,
916 inputSemanticName
[i
],
917 inputSemanticIndex
[i
],
922 if (program
->InputsRead
& FRAG_BIT_WPOS
) {
923 /* Must do this after setting up t->inputs, and before
924 * emitting constant references, below:
926 emit_wpos(st_context(ctx
), t
, program
, ureg
);
929 if (program
->InputsRead
& FRAG_BIT_FACE
) {
930 emit_face_var( t
, program
);
934 * Declare output attributes.
936 for (i
= 0; i
< numOutputs
; i
++) {
937 switch (outputSemanticName
[i
]) {
938 case TGSI_SEMANTIC_POSITION
:
939 t
->outputs
[i
] = ureg_DECL_output( ureg
,
940 TGSI_SEMANTIC_POSITION
, /* Z / Depth */
941 outputSemanticIndex
[i
] );
943 t
->outputs
[i
] = ureg_writemask( t
->outputs
[i
],
946 case TGSI_SEMANTIC_COLOR
:
947 t
->outputs
[i
] = ureg_DECL_output( ureg
,
949 outputSemanticIndex
[i
] );
958 for (i
= 0; i
< numInputs
; i
++) {
959 t
->inputs
[i
] = ureg_DECL_vs_input(ureg
, i
);
962 for (i
= 0; i
< numOutputs
; i
++) {
963 t
->outputs
[i
] = ureg_DECL_output( ureg
,
964 outputSemanticName
[i
],
965 outputSemanticIndex
[i
] );
966 if ((outputSemanticName
[i
] == TGSI_SEMANTIC_PSIZE
) && program
->Id
) {
967 static const gl_state_index pointSizeClampState
[STATE_LENGTH
]
968 = { STATE_INTERNAL
, STATE_POINT_SIZE_IMPL_CLAMP
, 0, 0, 0 };
969 /* XXX: note we are modifying the incoming shader here! Need to
970 * do this before emitting the constant decls below, or this
973 unsigned pointSizeClampConst
=
974 _mesa_add_state_reference(program
->Parameters
,
975 pointSizeClampState
);
976 struct ureg_dst psizregtemp
= ureg_DECL_temporary( ureg
);
977 t
->pointSizeConst
= ureg_DECL_constant( ureg
, pointSizeClampConst
);
978 t
->psizregreal
= t
->outputs
[i
];
980 t
->outputs
[i
] = psizregtemp
;
983 if (passthrough_edgeflags
)
984 emit_edgeflags( t
, program
);
987 /* Declare address register.
989 if (program
->NumAddressRegs
> 0) {
990 debug_assert( program
->NumAddressRegs
== 1 );
991 t
->address
[0] = ureg_DECL_address( ureg
);
994 /* Emit constants and immediates. Mesa uses a single index space
995 * for these, so we put all the translated regs in t->constants.
997 if (program
->Parameters
) {
998 t
->constants
= CALLOC( program
->Parameters
->NumParameters
,
999 sizeof t
->constants
[0] );
1000 if (t
->constants
== NULL
) {
1001 ret
= PIPE_ERROR_OUT_OF_MEMORY
;
1005 for (i
= 0; i
< program
->Parameters
->NumParameters
; i
++) {
1006 switch (program
->Parameters
->Parameters
[i
].Type
) {
1007 case PROGRAM_ENV_PARAM
:
1008 case PROGRAM_LOCAL_PARAM
:
1009 case PROGRAM_STATE_VAR
:
1010 case PROGRAM_NAMED_PARAM
:
1011 case PROGRAM_UNIFORM
:
1012 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
1015 /* Emit immediates only when there is no address register
1016 * in use. FIXME: Be smarter and recognize param arrays:
1017 * indirect addressing is only valid within the referenced
1020 case PROGRAM_CONSTANT
:
1021 if (program
->NumAddressRegs
> 0)
1022 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
1025 ureg_DECL_immediate( ureg
,
1026 program
->Parameters
->ParameterValues
[i
],
1035 /* texture samplers */
1036 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
1037 if (program
->SamplersUsed
& (1 << i
)) {
1038 t
->samplers
[i
] = ureg_DECL_sampler( ureg
, i
);
1042 /* Emit each instruction in turn:
1044 for (i
= 0; i
< program
->NumInstructions
; i
++) {
1045 set_insn_start( t
, ureg_get_instruction_number( ureg
));
1046 compile_instruction( t
, &program
->Instructions
[i
] );
1048 /* note can't do that easily at the end of prog due to
1049 possible early return */
1050 if (t
->prevInstWrotePsiz
&& program
->Id
) {
1051 set_insn_start( t
, ureg_get_instruction_number( ureg
));
1053 ureg_writemask(t
->outputs
[t
->psizoutindex
], WRITEMASK_X
),
1054 ureg_src(t
->outputs
[t
->psizoutindex
]),
1055 ureg_swizzle(t
->pointSizeConst
, 1,1,1,1));
1056 ureg_MIN( t
->ureg
, ureg_writemask(t
->psizregreal
, WRITEMASK_X
),
1057 ureg_src(t
->outputs
[t
->psizoutindex
]),
1058 ureg_swizzle(t
->pointSizeConst
, 2,2,2,2));
1060 t
->prevInstWrotePsiz
= GL_FALSE
;
1063 /* Fix up all emitted labels:
1065 for (i
= 0; i
< t
->labels_count
; i
++) {
1066 ureg_fixup_label( ureg
,
1068 t
->insn
[t
->labels
[i
].branch_target
] );
1077 debug_printf("%s: translate error flag set\n", __FUNCTION__
);
1085 * Tokens cannot be free with free otherwise the builtin gallium
1086 * malloc debugging will get confused.
1089 st_free_tokens(const struct tgsi_token
*tokens
)
1091 FREE((void *)tokens
);