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
];
60 struct ureg_dst psizregreal
;
61 struct ureg_src pointSizeConst
;
63 GLboolean prevInstWrotePsiz
;
65 const GLuint
*inputMapping
;
66 const GLuint
*outputMapping
;
68 /* For every instruction that contains a label (eg CALL), keep
69 * details so that we can go back afterwards and emit the correct
70 * tgsi instruction number for each label.
74 unsigned labels_count
;
76 /* Keep a record of the tgsi instruction number that each mesa
77 * instruction starts at, will be used to fix up labels after
84 unsigned procType
; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */
90 static unsigned *get_label( struct st_translate
*t
,
91 unsigned branch_target
)
95 if (t
->labels_count
+ 1 >= t
->labels_size
) {
96 unsigned old_size
= t
->labels_size
;
97 t
->labels_size
= 1 << (util_logbase2(t
->labels_size
) + 1);
98 t
->labels
= REALLOC( t
->labels
,
99 old_size
* sizeof t
->labels
[0],
100 t
->labels_size
* sizeof t
->labels
[0] );
101 if (t
->labels
== NULL
) {
102 static unsigned dummy
;
108 i
= t
->labels_count
++;
109 t
->labels
[i
].branch_target
= branch_target
;
110 return &t
->labels
[i
].token
;
114 static void set_insn_start( struct st_translate
*t
,
117 if (t
->insn_count
+ 1 >= t
->insn_size
) {
118 unsigned old_size
= t
->insn_size
;
119 t
->insn_size
= 1 << (util_logbase2(t
->insn_size
) + 1);
120 t
->insn
= REALLOC( t
->insn
,
121 old_size
* sizeof t
->insn
[0],
122 t
->insn_size
* sizeof t
->insn
[0] );
123 if (t
->insn
== NULL
) {
129 t
->insn
[t
->insn_count
++] = start
;
134 * Map mesa register file to TGSI register file.
136 static struct ureg_dst
137 dst_register( struct st_translate
*t
,
138 gl_register_file file
,
142 case PROGRAM_UNDEFINED
:
143 return ureg_dst_undef();
145 case PROGRAM_TEMPORARY
:
146 if (ureg_dst_is_undef(t
->temps
[index
]))
147 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
149 return t
->temps
[index
];
152 if (index
== t
->psizoutindex
)
153 t
->prevInstWrotePsiz
= GL_TRUE
;
154 return t
->outputs
[t
->outputMapping
[index
]];
156 case PROGRAM_ADDRESS
:
157 return t
->address
[index
];
161 return ureg_dst_undef();
166 static struct ureg_src
167 src_register( struct st_translate
*t
,
168 gl_register_file file
,
172 case PROGRAM_UNDEFINED
:
173 return ureg_src_undef();
175 case PROGRAM_TEMPORARY
:
177 if (ureg_dst_is_undef(t
->temps
[index
]))
178 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
179 return ureg_src(t
->temps
[index
]);
181 case PROGRAM_STATE_VAR
:
182 case PROGRAM_NAMED_PARAM
:
183 case PROGRAM_ENV_PARAM
:
184 case PROGRAM_LOCAL_PARAM
:
185 case PROGRAM_UNIFORM
:
187 return t
->constants
[index
];
188 case PROGRAM_CONSTANT
: /* ie, immediate */
190 return ureg_DECL_constant( t
->ureg
, 0 );
192 return t
->constants
[index
];
195 return t
->inputs
[t
->inputMapping
[index
]];
198 return ureg_src(t
->outputs
[t
->outputMapping
[index
]]); /* not needed? */
200 case PROGRAM_ADDRESS
:
201 return ureg_src(t
->address
[index
]);
205 return ureg_src_undef();
211 * Map mesa texture target to TGSI texture target.
214 translate_texture_target( GLuint textarget
,
218 switch( textarget
) {
219 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_SHADOW1D
;
220 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_SHADOW2D
;
221 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_SHADOWRECT
;
226 switch( textarget
) {
227 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_1D
;
228 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_2D
;
229 case TEXTURE_3D_INDEX
: return TGSI_TEXTURE_3D
;
230 case TEXTURE_CUBE_INDEX
: return TGSI_TEXTURE_CUBE
;
231 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_RECT
;
234 return TGSI_TEXTURE_1D
;
239 static struct ureg_dst
240 translate_dst( struct st_translate
*t
,
241 const struct prog_dst_register
*DstReg
,
244 struct ureg_dst dst
= dst_register( t
,
248 dst
= ureg_writemask( dst
,
252 dst
= ureg_saturate( dst
);
255 dst
= ureg_dst_indirect( dst
, ureg_src(t
->address
[0]) );
261 static struct ureg_src
262 translate_src( struct st_translate
*t
,
263 const struct prog_src_register
*SrcReg
)
265 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
267 src
= ureg_swizzle( src
,
268 GET_SWZ( SrcReg
->Swizzle
, 0 ) & 0x3,
269 GET_SWZ( SrcReg
->Swizzle
, 1 ) & 0x3,
270 GET_SWZ( SrcReg
->Swizzle
, 2 ) & 0x3,
271 GET_SWZ( SrcReg
->Swizzle
, 3 ) & 0x3);
273 if (SrcReg
->Negate
== NEGATE_XYZW
)
274 src
= ureg_negate(src
);
279 if (SrcReg
->RelAddr
) {
280 src
= ureg_src_indirect( src
, ureg_src(t
->address
[0]));
281 /* If SrcReg->Index was negative, it was set to zero in
282 * src_register(). Reassign it now.
284 src
.Index
= SrcReg
->Index
;
291 static struct ureg_src
swizzle_4v( struct ureg_src src
,
292 const unsigned *swz
)
294 return ureg_swizzle( src
, swz
[0], swz
[1], swz
[2], swz
[3] );
299 * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG:
305 * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
307 static void emit_swz( struct st_translate
*t
,
309 const struct prog_src_register
*SrcReg
)
311 struct ureg_program
*ureg
= t
->ureg
;
312 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
314 unsigned negate_mask
= SrcReg
->Negate
;
316 unsigned one_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ONE
) << 0 |
317 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ONE
) << 1 |
318 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ONE
) << 2 |
319 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ONE
) << 3);
321 unsigned zero_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ZERO
) << 0 |
322 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ZERO
) << 1 |
323 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ZERO
) << 2 |
324 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ZERO
) << 3);
326 unsigned negative_one_mask
= one_mask
& negate_mask
;
327 unsigned positive_one_mask
= one_mask
& ~negate_mask
;
331 unsigned mul_swizzle
[4] = {0,0,0,0};
332 unsigned add_swizzle
[4] = {0,0,0,0};
333 unsigned src_swizzle
[4] = {0,0,0,0};
334 boolean need_add
= FALSE
;
335 boolean need_mul
= FALSE
;
337 if (dst
.WriteMask
== 0)
340 /* Is this just a MOV?
342 if (zero_mask
== 0 &&
344 (negate_mask
== 0 || negate_mask
== TGSI_WRITEMASK_XYZW
))
346 ureg_MOV( ureg
, dst
, translate_src( t
, SrcReg
));
352 #define IMM_NEG_ONE 2
354 imm
= ureg_imm3f( ureg
, 0, 1, -1 );
356 for (i
= 0; i
< 4; i
++) {
357 unsigned bit
= 1 << i
;
359 if (dst
.WriteMask
& bit
) {
360 if (positive_one_mask
& bit
) {
361 mul_swizzle
[i
] = IMM_ZERO
;
362 add_swizzle
[i
] = IMM_ONE
;
365 else if (negative_one_mask
& bit
) {
366 mul_swizzle
[i
] = IMM_ZERO
;
367 add_swizzle
[i
] = IMM_NEG_ONE
;
370 else if (zero_mask
& bit
) {
371 mul_swizzle
[i
] = IMM_ZERO
;
372 add_swizzle
[i
] = IMM_ZERO
;
376 add_swizzle
[i
] = IMM_ZERO
;
377 src_swizzle
[i
] = GET_SWZ(SrcReg
->Swizzle
, i
);
379 if (negate_mask
& bit
) {
380 mul_swizzle
[i
] = IMM_NEG_ONE
;
383 mul_swizzle
[i
] = IMM_ONE
;
389 if (need_mul
&& need_add
) {
392 swizzle_4v( src
, src_swizzle
),
393 swizzle_4v( imm
, mul_swizzle
),
394 swizzle_4v( imm
, add_swizzle
) );
399 swizzle_4v( src
, src_swizzle
),
400 swizzle_4v( imm
, mul_swizzle
) );
405 swizzle_4v( imm
, add_swizzle
) );
418 * Negate the value of DDY to match GL semantics where (0,0) is the
419 * lower-left corner of the window.
420 * Note that the GL_ARB_fragment_coord_conventions extension will
421 * effect this someday.
423 static void emit_ddy( struct st_translate
*t
,
425 const struct prog_src_register
*SrcReg
)
427 struct ureg_program
*ureg
= t
->ureg
;
428 struct ureg_src src
= translate_src( t
, SrcReg
);
429 src
= ureg_negate( src
);
430 ureg_DDY( ureg
, dst
, src
);
436 translate_opcode( unsigned op
)
440 return TGSI_OPCODE_ARL
;
442 return TGSI_OPCODE_ABS
;
444 return TGSI_OPCODE_ADD
;
446 return TGSI_OPCODE_BGNLOOP
;
448 return TGSI_OPCODE_BGNSUB
;
450 return TGSI_OPCODE_BRA
;
452 return TGSI_OPCODE_BRK
;
454 return TGSI_OPCODE_CAL
;
456 return TGSI_OPCODE_CMP
;
458 return TGSI_OPCODE_CONT
;
460 return TGSI_OPCODE_COS
;
462 return TGSI_OPCODE_DDX
;
464 return TGSI_OPCODE_DDY
;
466 return TGSI_OPCODE_DP2
;
468 return TGSI_OPCODE_DP2A
;
470 return TGSI_OPCODE_DP3
;
472 return TGSI_OPCODE_DP4
;
474 return TGSI_OPCODE_DPH
;
476 return TGSI_OPCODE_DST
;
478 return TGSI_OPCODE_ELSE
;
480 return TGSI_OPCODE_ENDIF
;
482 return TGSI_OPCODE_ENDLOOP
;
484 return TGSI_OPCODE_ENDSUB
;
486 return TGSI_OPCODE_EX2
;
488 return TGSI_OPCODE_EXP
;
490 return TGSI_OPCODE_FLR
;
492 return TGSI_OPCODE_FRC
;
494 return TGSI_OPCODE_IF
;
496 return TGSI_OPCODE_TRUNC
;
498 return TGSI_OPCODE_KIL
;
500 return TGSI_OPCODE_KILP
;
502 return TGSI_OPCODE_LG2
;
504 return TGSI_OPCODE_LOG
;
506 return TGSI_OPCODE_LIT
;
508 return TGSI_OPCODE_LRP
;
510 return TGSI_OPCODE_MAD
;
512 return TGSI_OPCODE_MAX
;
514 return TGSI_OPCODE_MIN
;
516 return TGSI_OPCODE_MOV
;
518 return TGSI_OPCODE_MUL
;
520 return TGSI_OPCODE_NOP
;
522 return TGSI_OPCODE_NRM
;
524 return TGSI_OPCODE_NRM4
;
526 return TGSI_OPCODE_POW
;
528 return TGSI_OPCODE_RCP
;
530 return TGSI_OPCODE_RET
;
532 return TGSI_OPCODE_RSQ
;
534 return TGSI_OPCODE_SCS
;
536 return TGSI_OPCODE_SEQ
;
538 return TGSI_OPCODE_SGE
;
540 return TGSI_OPCODE_SGT
;
542 return TGSI_OPCODE_SIN
;
544 return TGSI_OPCODE_SLE
;
546 return TGSI_OPCODE_SLT
;
548 return TGSI_OPCODE_SNE
;
550 return TGSI_OPCODE_SSG
;
552 return TGSI_OPCODE_SUB
;
554 return TGSI_OPCODE_TEX
;
556 return TGSI_OPCODE_TXB
;
558 return TGSI_OPCODE_TXD
;
560 return TGSI_OPCODE_TXL
;
562 return TGSI_OPCODE_TXP
;
564 return TGSI_OPCODE_XPD
;
566 return TGSI_OPCODE_END
;
569 return TGSI_OPCODE_NOP
;
576 struct st_translate
*t
,
577 const struct prog_instruction
*inst
)
579 struct ureg_program
*ureg
= t
->ureg
;
581 struct ureg_dst dst
[1];
582 struct ureg_src src
[4];
586 num_dst
= _mesa_num_inst_dst_regs( inst
->Opcode
);
587 num_src
= _mesa_num_inst_src_regs( inst
->Opcode
);
590 dst
[0] = translate_dst( t
,
592 inst
->SaturateMode
);
594 for (i
= 0; i
< num_src
; i
++)
595 src
[i
] = translate_src( t
, &inst
->SrcReg
[i
] );
597 switch( inst
->Opcode
) {
599 emit_swz( t
, dst
[0], &inst
->SrcReg
[0] );
607 debug_assert(num_dst
== 0);
608 ureg_label_insn( ureg
,
609 translate_opcode( inst
->Opcode
),
611 get_label( t
, inst
->BranchTarget
));
619 src
[num_src
++] = t
->samplers
[inst
->TexSrcUnit
];
621 translate_opcode( inst
->Opcode
),
623 translate_texture_target( inst
->TexSrcTarget
,
629 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XY
);
631 translate_opcode( inst
->Opcode
),
637 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XYZ
);
639 translate_opcode( inst
->Opcode
),
648 /* At some point, a motivated person could add a better
649 * implementation of noise. Currently not even the nvidia
650 * binary drivers do anything more than this. In any case, the
651 * place to do this is in the GL state tracker, not the poor
654 ureg_MOV( ureg
, dst
[0], ureg_imm1f(ureg
, 0.5) );
658 emit_ddy( t
, dst
[0], &inst
->SrcReg
[0] );
663 translate_opcode( inst
->Opcode
),
672 * Emit the TGSI instructions for inverting the WPOS y coordinate.
675 emit_inverted_wpos( struct st_translate
*t
,
676 const struct gl_program
*program
)
678 struct ureg_program
*ureg
= t
->ureg
;
680 /* Fragment program uses fragment position input.
681 * Need to replace instances of INPUT[WPOS] with temp T
682 * where T = INPUT[WPOS] by y is inverted.
684 static const gl_state_index winSizeState
[STATE_LENGTH
]
685 = { STATE_INTERNAL
, STATE_FB_SIZE
, 0, 0, 0 };
687 /* XXX: note we are modifying the incoming shader here! Need to
688 * do this before emitting the constant decls below, or this
691 unsigned winHeightConst
= _mesa_add_state_reference(program
->Parameters
,
694 struct ureg_src winsize
= ureg_DECL_constant( ureg
, winHeightConst
);
695 struct ureg_dst wpos_temp
= ureg_DECL_temporary( ureg
);
696 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
698 /* MOV wpos_temp, input[wpos]
700 ureg_MOV( ureg
, wpos_temp
, wpos_input
);
702 /* SUB wpos_temp.y, winsize_const, wpos_input
705 ureg_writemask(wpos_temp
, TGSI_WRITEMASK_Y
),
709 /* Use wpos_temp as position input from here on:
711 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
716 * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
717 * TGSI uses +1 for front, -1 for back.
718 * This function converts the TGSI value to the GL value. Simply clamping/
719 * saturating the value to [0,1] does the job.
722 emit_face_var( struct st_translate
*t
,
723 const struct gl_program
*program
)
725 struct ureg_program
*ureg
= t
->ureg
;
726 struct ureg_dst face_temp
= ureg_DECL_temporary( ureg
);
727 struct ureg_src face_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]];
729 /* MOV_SAT face_temp, input[face]
731 face_temp
= ureg_saturate( face_temp
);
732 ureg_MOV( ureg
, face_temp
, face_input
);
734 /* Use face_temp as face input from here on:
736 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]] = ureg_src(face_temp
);
740 emit_edgeflags( struct st_translate
*t
,
741 const struct gl_program
*program
)
743 struct ureg_program
*ureg
= t
->ureg
;
744 struct ureg_dst edge_dst
= t
->outputs
[t
->outputMapping
[VERT_RESULT_EDGE
]];
745 struct ureg_src edge_src
= t
->inputs
[t
->inputMapping
[VERT_ATTRIB_EDGEFLAG
]];
747 ureg_MOV( ureg
, edge_dst
, edge_src
);
751 * Translate Mesa program to TGSI format.
752 * \param program the program to translate
753 * \param numInputs number of input registers used
754 * \param inputMapping maps Mesa fragment program inputs to TGSI generic
756 * \param inputSemanticName the TGSI_SEMANTIC flag for each input
757 * \param inputSemanticIndex the semantic index (ex: which texcoord) for
759 * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
760 * \param numOutputs number of output registers used
761 * \param outputMapping maps Mesa fragment program outputs to TGSI
763 * \param outputSemanticName the TGSI_SEMANTIC flag for each output
764 * \param outputSemanticIndex the semantic index (ex: which texcoord) for
767 * \return array of translated tokens, caller's responsibility to free
770 st_translate_mesa_program(
773 struct ureg_program
*ureg
,
774 const struct gl_program
*program
,
776 const GLuint inputMapping
[],
777 const ubyte inputSemanticName
[],
778 const ubyte inputSemanticIndex
[],
779 const GLuint interpMode
[],
781 const GLuint outputMapping
[],
782 const ubyte outputSemanticName
[],
783 const ubyte outputSemanticIndex
[],
784 boolean passthrough_edgeflags
)
786 struct st_translate translate
, *t
;
790 memset(t
, 0, sizeof *t
);
792 t
->procType
= procType
;
793 t
->inputMapping
= inputMapping
;
794 t
->outputMapping
= outputMapping
;
796 t
->psizoutindex
= -1;
797 t
->prevInstWrotePsiz
= GL_FALSE
;
799 /*_mesa_print_program(program);*/
802 * Declare input attributes.
804 if (procType
== TGSI_PROCESSOR_FRAGMENT
) {
805 for (i
= 0; i
< numInputs
; i
++) {
806 t
->inputs
[i
] = ureg_DECL_fs_input(ureg
,
807 inputSemanticName
[i
],
808 inputSemanticIndex
[i
],
812 if (program
->InputsRead
& FRAG_BIT_WPOS
) {
813 /* Must do this after setting up t->inputs, and before
814 * emitting constant references, below:
816 emit_inverted_wpos( t
, program
);
819 if (program
->InputsRead
& FRAG_BIT_FACE
) {
820 emit_face_var( t
, program
);
824 * Declare output attributes.
826 for (i
= 0; i
< numOutputs
; i
++) {
827 switch (outputSemanticName
[i
]) {
828 case TGSI_SEMANTIC_POSITION
:
829 t
->outputs
[i
] = ureg_DECL_output( ureg
,
830 TGSI_SEMANTIC_POSITION
, /* Z / Depth */
831 outputSemanticIndex
[i
] );
833 t
->outputs
[i
] = ureg_writemask( t
->outputs
[i
],
836 case TGSI_SEMANTIC_COLOR
:
837 t
->outputs
[i
] = ureg_DECL_output( ureg
,
839 outputSemanticIndex
[i
] );
848 for (i
= 0; i
< numInputs
; i
++) {
849 t
->inputs
[i
] = ureg_DECL_vs_input(ureg
, i
);
852 for (i
= 0; i
< numOutputs
; i
++) {
853 t
->outputs
[i
] = ureg_DECL_output( ureg
,
854 outputSemanticName
[i
],
855 outputSemanticIndex
[i
] );
856 if ((outputSemanticName
[i
] == TGSI_SEMANTIC_PSIZE
) && program
->Id
) {
857 static const gl_state_index pointSizeClampState
[STATE_LENGTH
]
858 = { STATE_INTERNAL
, STATE_POINT_SIZE_IMPL_CLAMP
, 0, 0, 0 };
859 /* XXX: note we are modifying the incoming shader here! Need to
860 * do this before emitting the constant decls below, or this
863 unsigned pointSizeClampConst
= _mesa_add_state_reference(program
->Parameters
,
864 pointSizeClampState
);
865 struct ureg_dst psizregtemp
= ureg_DECL_temporary( ureg
);
866 t
->pointSizeConst
= ureg_DECL_constant( ureg
, pointSizeClampConst
);
867 t
->psizregreal
= t
->outputs
[i
];
869 t
->outputs
[i
] = psizregtemp
;
872 if (passthrough_edgeflags
)
873 emit_edgeflags( t
, program
);
876 /* Declare address register.
878 if (program
->NumAddressRegs
> 0) {
879 debug_assert( program
->NumAddressRegs
== 1 );
880 t
->address
[0] = ureg_DECL_address( ureg
);
884 /* Emit constants and immediates. Mesa uses a single index space
885 * for these, so we put all the translated regs in t->constants.
887 if (program
->Parameters
) {
889 t
->constants
= CALLOC( program
->Parameters
->NumParameters
,
890 sizeof t
->constants
[0] );
891 if (t
->constants
== NULL
)
894 for (i
= 0; i
< program
->Parameters
->NumParameters
; i
++) {
895 switch (program
->Parameters
->Parameters
[i
].Type
) {
896 case PROGRAM_ENV_PARAM
:
897 case PROGRAM_LOCAL_PARAM
:
898 case PROGRAM_STATE_VAR
:
899 case PROGRAM_NAMED_PARAM
:
900 case PROGRAM_UNIFORM
:
901 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
904 /* Emit immediates only when there is no address register
905 * in use. FIXME: Be smarter and recognize param arrays:
906 * indirect addressing is only valid within the referenced
909 case PROGRAM_CONSTANT
:
910 if (program
->NumAddressRegs
> 0)
911 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
914 ureg_DECL_immediate( ureg
,
915 program
->Parameters
->ParameterValues
[i
],
924 /* texture samplers */
925 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
926 if (program
->SamplersUsed
& (1 << i
)) {
927 t
->samplers
[i
] = ureg_DECL_sampler( ureg
, i
);
931 /* Emit each instruction in turn:
933 for (i
= 0; i
< program
->NumInstructions
; i
++) {
934 set_insn_start( t
, ureg_get_instruction_number( ureg
));
935 compile_instruction( t
, &program
->Instructions
[i
] );
937 /* note can't do that easily at the end of prog due to
938 possible early return */
939 if (t
->prevInstWrotePsiz
&& program
->Id
) {
940 set_insn_start( t
, ureg_get_instruction_number( ureg
));
941 ureg_MAX( t
->ureg
, ureg_writemask(t
->outputs
[t
->psizoutindex
], WRITEMASK_X
),
942 ureg_src(t
->outputs
[t
->psizoutindex
]),
943 ureg_swizzle(t
->pointSizeConst
, 1,1,1,1));
944 ureg_MIN( t
->ureg
, ureg_writemask(t
->psizregreal
, WRITEMASK_X
),
945 ureg_src(t
->outputs
[t
->psizoutindex
]),
946 ureg_swizzle(t
->pointSizeConst
, 2,2,2,2));
948 t
->prevInstWrotePsiz
= GL_FALSE
;
951 /* Fix up all emitted labels:
953 for (i
= 0; i
< t
->labels_count
; i
++) {
954 ureg_fixup_label( ureg
,
956 t
->insn
[t
->labels
[i
].branch_target
] );
967 debug_printf("%s: translate error flag set\n", __FUNCTION__
);
970 return PIPE_ERROR_OUT_OF_MEMORY
;
975 * Tokens cannot be free with _mesa_free otherwise the builtin gallium
976 * malloc debugging will get confused.
979 st_free_tokens(const struct tgsi_token
*tokens
)
981 FREE((void *)tokens
);