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 return ureg_src(t
->temps
[index
]);
186 case PROGRAM_NAMED_PARAM
:
187 case PROGRAM_ENV_PARAM
:
188 case PROGRAM_LOCAL_PARAM
:
189 case PROGRAM_UNIFORM
:
191 return t
->constants
[index
];
192 case PROGRAM_STATE_VAR
:
193 case PROGRAM_CONSTANT
: /* ie, immediate */
195 return ureg_DECL_constant( t
->ureg
, 0 );
197 return t
->constants
[index
];
200 return t
->inputs
[t
->inputMapping
[index
]];
203 return ureg_src(t
->outputs
[t
->outputMapping
[index
]]); /* not needed? */
205 case PROGRAM_ADDRESS
:
206 return ureg_src(t
->address
[index
]);
210 return ureg_src_undef();
216 * Map mesa texture target to TGSI texture target.
219 translate_texture_target( GLuint textarget
,
223 switch( textarget
) {
224 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_SHADOW1D
;
225 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_SHADOW2D
;
226 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_SHADOWRECT
;
231 switch( textarget
) {
232 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_1D
;
233 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_2D
;
234 case TEXTURE_3D_INDEX
: return TGSI_TEXTURE_3D
;
235 case TEXTURE_CUBE_INDEX
: return TGSI_TEXTURE_CUBE
;
236 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_RECT
;
239 return TGSI_TEXTURE_1D
;
244 static struct ureg_dst
245 translate_dst( struct st_translate
*t
,
246 const struct prog_dst_register
*DstReg
,
249 struct ureg_dst dst
= dst_register( t
,
253 dst
= ureg_writemask( dst
,
257 dst
= ureg_saturate( dst
);
260 dst
= ureg_dst_indirect( dst
, ureg_src(t
->address
[0]) );
266 static struct ureg_src
267 translate_src( struct st_translate
*t
,
268 const struct prog_src_register
*SrcReg
)
270 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
272 src
= ureg_swizzle( src
,
273 GET_SWZ( SrcReg
->Swizzle
, 0 ) & 0x3,
274 GET_SWZ( SrcReg
->Swizzle
, 1 ) & 0x3,
275 GET_SWZ( SrcReg
->Swizzle
, 2 ) & 0x3,
276 GET_SWZ( SrcReg
->Swizzle
, 3 ) & 0x3);
278 if (SrcReg
->Negate
== NEGATE_XYZW
)
279 src
= ureg_negate(src
);
284 if (SrcReg
->RelAddr
) {
285 src
= ureg_src_indirect( src
, ureg_src(t
->address
[0]));
286 /* If SrcReg->Index was negative, it was set to zero in
287 * src_register(). Reassign it now.
289 src
.Index
= SrcReg
->Index
;
296 static struct ureg_src
swizzle_4v( struct ureg_src src
,
297 const unsigned *swz
)
299 return ureg_swizzle( src
, swz
[0], swz
[1], swz
[2], swz
[3] );
304 * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG:
310 * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
312 static void emit_swz( struct st_translate
*t
,
314 const struct prog_src_register
*SrcReg
)
316 struct ureg_program
*ureg
= t
->ureg
;
317 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
319 unsigned negate_mask
= SrcReg
->Negate
;
321 unsigned one_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ONE
) << 0 |
322 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ONE
) << 1 |
323 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ONE
) << 2 |
324 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ONE
) << 3);
326 unsigned zero_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ZERO
) << 0 |
327 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ZERO
) << 1 |
328 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ZERO
) << 2 |
329 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ZERO
) << 3);
331 unsigned negative_one_mask
= one_mask
& negate_mask
;
332 unsigned positive_one_mask
= one_mask
& ~negate_mask
;
336 unsigned mul_swizzle
[4] = {0,0,0,0};
337 unsigned add_swizzle
[4] = {0,0,0,0};
338 unsigned src_swizzle
[4] = {0,0,0,0};
339 boolean need_add
= FALSE
;
340 boolean need_mul
= FALSE
;
342 if (dst
.WriteMask
== 0)
345 /* Is this just a MOV?
347 if (zero_mask
== 0 &&
349 (negate_mask
== 0 || negate_mask
== TGSI_WRITEMASK_XYZW
))
351 ureg_MOV( ureg
, dst
, translate_src( t
, SrcReg
));
357 #define IMM_NEG_ONE 2
359 imm
= ureg_imm3f( ureg
, 0, 1, -1 );
361 for (i
= 0; i
< 4; i
++) {
362 unsigned bit
= 1 << i
;
364 if (dst
.WriteMask
& bit
) {
365 if (positive_one_mask
& bit
) {
366 mul_swizzle
[i
] = IMM_ZERO
;
367 add_swizzle
[i
] = IMM_ONE
;
370 else if (negative_one_mask
& bit
) {
371 mul_swizzle
[i
] = IMM_ZERO
;
372 add_swizzle
[i
] = IMM_NEG_ONE
;
375 else if (zero_mask
& bit
) {
376 mul_swizzle
[i
] = IMM_ZERO
;
377 add_swizzle
[i
] = IMM_ZERO
;
381 add_swizzle
[i
] = IMM_ZERO
;
382 src_swizzle
[i
] = GET_SWZ(SrcReg
->Swizzle
, i
);
384 if (negate_mask
& bit
) {
385 mul_swizzle
[i
] = IMM_NEG_ONE
;
388 mul_swizzle
[i
] = IMM_ONE
;
394 if (need_mul
&& need_add
) {
397 swizzle_4v( src
, src_swizzle
),
398 swizzle_4v( imm
, mul_swizzle
),
399 swizzle_4v( imm
, add_swizzle
) );
404 swizzle_4v( src
, src_swizzle
),
405 swizzle_4v( imm
, mul_swizzle
) );
410 swizzle_4v( imm
, add_swizzle
) );
423 * Negate the value of DDY to match GL semantics where (0,0) is the
424 * lower-left corner of the window.
425 * Note that the GL_ARB_fragment_coord_conventions extension will
426 * effect this someday.
428 static void emit_ddy( struct st_translate
*t
,
430 const struct prog_src_register
*SrcReg
)
432 struct ureg_program
*ureg
= t
->ureg
;
433 struct ureg_src src
= translate_src( t
, SrcReg
);
434 src
= ureg_negate( src
);
435 ureg_DDY( ureg
, dst
, src
);
441 translate_opcode( unsigned op
)
445 return TGSI_OPCODE_ARL
;
447 return TGSI_OPCODE_ABS
;
449 return TGSI_OPCODE_ADD
;
451 return TGSI_OPCODE_BGNLOOP
;
453 return TGSI_OPCODE_BGNSUB
;
455 return TGSI_OPCODE_BRA
;
457 return TGSI_OPCODE_BRK
;
459 return TGSI_OPCODE_CAL
;
461 return TGSI_OPCODE_CMP
;
463 return TGSI_OPCODE_CONT
;
465 return TGSI_OPCODE_COS
;
467 return TGSI_OPCODE_DDX
;
469 return TGSI_OPCODE_DDY
;
471 return TGSI_OPCODE_DP2
;
473 return TGSI_OPCODE_DP2A
;
475 return TGSI_OPCODE_DP3
;
477 return TGSI_OPCODE_DP4
;
479 return TGSI_OPCODE_DPH
;
481 return TGSI_OPCODE_DST
;
483 return TGSI_OPCODE_ELSE
;
485 return TGSI_OPCODE_ENDIF
;
487 return TGSI_OPCODE_ENDLOOP
;
489 return TGSI_OPCODE_ENDSUB
;
491 return TGSI_OPCODE_EX2
;
493 return TGSI_OPCODE_EXP
;
495 return TGSI_OPCODE_FLR
;
497 return TGSI_OPCODE_FRC
;
499 return TGSI_OPCODE_IF
;
501 return TGSI_OPCODE_TRUNC
;
503 return TGSI_OPCODE_KIL
;
505 return TGSI_OPCODE_KILP
;
507 return TGSI_OPCODE_LG2
;
509 return TGSI_OPCODE_LOG
;
511 return TGSI_OPCODE_LIT
;
513 return TGSI_OPCODE_LRP
;
515 return TGSI_OPCODE_MAD
;
517 return TGSI_OPCODE_MAX
;
519 return TGSI_OPCODE_MIN
;
521 return TGSI_OPCODE_MOV
;
523 return TGSI_OPCODE_MUL
;
525 return TGSI_OPCODE_NOP
;
527 return TGSI_OPCODE_NRM
;
529 return TGSI_OPCODE_NRM4
;
531 return TGSI_OPCODE_POW
;
533 return TGSI_OPCODE_RCP
;
535 return TGSI_OPCODE_RET
;
537 return TGSI_OPCODE_RSQ
;
539 return TGSI_OPCODE_SCS
;
541 return TGSI_OPCODE_SEQ
;
543 return TGSI_OPCODE_SGE
;
545 return TGSI_OPCODE_SGT
;
547 return TGSI_OPCODE_SIN
;
549 return TGSI_OPCODE_SLE
;
551 return TGSI_OPCODE_SLT
;
553 return TGSI_OPCODE_SNE
;
555 return TGSI_OPCODE_SSG
;
557 return TGSI_OPCODE_SUB
;
559 return TGSI_OPCODE_TEX
;
561 return TGSI_OPCODE_TXB
;
563 return TGSI_OPCODE_TXD
;
565 return TGSI_OPCODE_TXL
;
567 return TGSI_OPCODE_TXP
;
569 return TGSI_OPCODE_XPD
;
571 return TGSI_OPCODE_END
;
574 return TGSI_OPCODE_NOP
;
581 struct st_translate
*t
,
582 const struct prog_instruction
*inst
)
584 struct ureg_program
*ureg
= t
->ureg
;
586 struct ureg_dst dst
[1];
587 struct ureg_src src
[4];
591 num_dst
= _mesa_num_inst_dst_regs( inst
->Opcode
);
592 num_src
= _mesa_num_inst_src_regs( inst
->Opcode
);
595 dst
[0] = translate_dst( t
,
597 inst
->SaturateMode
);
599 for (i
= 0; i
< num_src
; i
++)
600 src
[i
] = translate_src( t
, &inst
->SrcReg
[i
] );
602 switch( inst
->Opcode
) {
604 emit_swz( t
, dst
[0], &inst
->SrcReg
[0] );
612 debug_assert(num_dst
== 0);
613 ureg_label_insn( ureg
,
614 translate_opcode( inst
->Opcode
),
616 get_label( t
, inst
->BranchTarget
));
624 src
[num_src
++] = t
->samplers
[inst
->TexSrcUnit
];
626 translate_opcode( inst
->Opcode
),
628 translate_texture_target( inst
->TexSrcTarget
,
634 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XY
);
636 translate_opcode( inst
->Opcode
),
642 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XYZ
);
644 translate_opcode( inst
->Opcode
),
653 /* At some point, a motivated person could add a better
654 * implementation of noise. Currently not even the nvidia
655 * binary drivers do anything more than this. In any case, the
656 * place to do this is in the GL state tracker, not the poor
659 ureg_MOV( ureg
, dst
[0], ureg_imm1f(ureg
, 0.5) );
663 emit_ddy( t
, dst
[0], &inst
->SrcReg
[0] );
668 translate_opcode( inst
->Opcode
),
676 * Emit the TGSI instructions to adjust the WPOS pixel center convention
679 emit_adjusted_wpos( struct st_translate
*t
,
680 const struct gl_program
*program
, GLfloat value
)
682 struct ureg_program
*ureg
= t
->ureg
;
683 struct ureg_dst wpos_temp
= ureg_DECL_temporary(ureg
);
684 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
686 ureg_ADD(ureg
, ureg_writemask(wpos_temp
, TGSI_WRITEMASK_X
| TGSI_WRITEMASK_Y
),
687 wpos_input
, ureg_imm1f(ureg
, value
));
689 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
693 * Emit the TGSI instructions for inverting the WPOS y coordinate.
696 emit_inverted_wpos( struct st_translate
*t
,
697 const struct gl_program
*program
)
699 struct ureg_program
*ureg
= t
->ureg
;
701 /* Fragment program uses fragment position input.
702 * Need to replace instances of INPUT[WPOS] with temp T
703 * where T = INPUT[WPOS] by y is inverted.
705 static const gl_state_index winSizeState
[STATE_LENGTH
]
706 = { STATE_INTERNAL
, STATE_FB_SIZE
, 0, 0, 0 };
708 /* XXX: note we are modifying the incoming shader here! Need to
709 * do this before emitting the constant decls below, or this
712 unsigned winHeightConst
= _mesa_add_state_reference(program
->Parameters
,
715 struct ureg_src winsize
= ureg_DECL_constant( ureg
, winHeightConst
);
716 struct ureg_dst wpos_temp
;
717 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
719 /* MOV wpos_temp, input[wpos]
721 if (wpos_input
.File
== TGSI_FILE_TEMPORARY
)
722 wpos_temp
= ureg_dst(wpos_input
);
724 wpos_temp
= ureg_DECL_temporary( ureg
);
725 ureg_MOV( ureg
, wpos_temp
, wpos_input
);
728 /* SUB wpos_temp.y, winsize_const, wpos_input
731 ureg_writemask(wpos_temp
, TGSI_WRITEMASK_Y
),
735 /* Use wpos_temp as position input from here on:
737 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
742 * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
743 * TGSI uses +1 for front, -1 for back.
744 * This function converts the TGSI value to the GL value. Simply clamping/
745 * saturating the value to [0,1] does the job.
748 emit_face_var( struct st_translate
*t
,
749 const struct gl_program
*program
)
751 struct ureg_program
*ureg
= t
->ureg
;
752 struct ureg_dst face_temp
= ureg_DECL_temporary( ureg
);
753 struct ureg_src face_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]];
755 /* MOV_SAT face_temp, input[face]
757 face_temp
= ureg_saturate( face_temp
);
758 ureg_MOV( ureg
, face_temp
, face_input
);
760 /* Use face_temp as face input from here on:
762 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]] = ureg_src(face_temp
);
767 emit_edgeflags( struct st_translate
*t
,
768 const struct gl_program
*program
)
770 struct ureg_program
*ureg
= t
->ureg
;
771 struct ureg_dst edge_dst
= t
->outputs
[t
->outputMapping
[VERT_RESULT_EDGE
]];
772 struct ureg_src edge_src
= t
->inputs
[t
->inputMapping
[VERT_ATTRIB_EDGEFLAG
]];
774 ureg_MOV( ureg
, edge_dst
, edge_src
);
779 * Translate Mesa program to TGSI format.
780 * \param program the program to translate
781 * \param numInputs number of input registers used
782 * \param inputMapping maps Mesa fragment program inputs to TGSI generic
784 * \param inputSemanticName the TGSI_SEMANTIC flag for each input
785 * \param inputSemanticIndex the semantic index (ex: which texcoord) for
787 * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
788 * \param numOutputs number of output registers used
789 * \param outputMapping maps Mesa fragment program outputs to TGSI
791 * \param outputSemanticName the TGSI_SEMANTIC flag for each output
792 * \param outputSemanticIndex the semantic index (ex: which texcoord) for
795 * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
798 st_translate_mesa_program(
801 struct ureg_program
*ureg
,
802 const struct gl_program
*program
,
804 const GLuint inputMapping
[],
805 const ubyte inputSemanticName
[],
806 const ubyte inputSemanticIndex
[],
807 const GLuint interpMode
[],
809 const GLuint outputMapping
[],
810 const ubyte outputSemanticName
[],
811 const ubyte outputSemanticIndex
[],
812 boolean passthrough_edgeflags
)
814 struct st_translate translate
, *t
;
816 enum pipe_error ret
= PIPE_OK
;
819 memset(t
, 0, sizeof *t
);
821 t
->procType
= procType
;
822 t
->inputMapping
= inputMapping
;
823 t
->outputMapping
= outputMapping
;
825 t
->psizoutindex
= -1;
826 t
->prevInstWrotePsiz
= GL_FALSE
;
828 /*_mesa_print_program(program);*/
831 * Declare input attributes.
833 if (procType
== TGSI_PROCESSOR_FRAGMENT
) {
834 struct gl_fragment_program
* fp
= (struct gl_fragment_program
*)program
;
835 for (i
= 0; i
< numInputs
; i
++) {
836 if (program
->InputFlags
[0] & PROG_PARAM_BIT_CYL_WRAP
) {
837 t
->inputs
[i
] = ureg_DECL_fs_input_cyl(ureg
,
838 inputSemanticName
[i
],
839 inputSemanticIndex
[i
],
841 TGSI_CYLINDRICAL_WRAP_X
);
844 t
->inputs
[i
] = ureg_DECL_fs_input(ureg
,
845 inputSemanticName
[i
],
846 inputSemanticIndex
[i
],
851 if (program
->InputsRead
& FRAG_BIT_WPOS
) {
852 /* Must do this after setting up t->inputs, and before
853 * emitting constant references, below:
855 struct pipe_screen
* pscreen
= st_context(ctx
)->pipe
->screen
;
856 boolean invert
= FALSE
;
858 if (fp
->OriginUpperLeft
) {
859 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
)) {
861 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
)) {
862 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
869 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
))
870 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
871 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
))
877 if (fp
->PixelCenterInteger
) {
878 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
))
879 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
880 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
))
881 emit_adjusted_wpos(t
, program
, invert
? 0.5f
: -0.5f
);
886 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
)) {
888 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
)) {
889 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
890 emit_adjusted_wpos(t
, program
, invert
? -0.5f
: 0.5f
);
896 /* we invert after adjustment so that we avoid the MOV to temporary,
897 * and reuse the adjustment ADD instead */
899 emit_inverted_wpos(t
, program
);
902 if (program
->InputsRead
& FRAG_BIT_FACE
) {
903 emit_face_var( t
, program
);
907 * Declare output attributes.
909 for (i
= 0; i
< numOutputs
; i
++) {
910 switch (outputSemanticName
[i
]) {
911 case TGSI_SEMANTIC_POSITION
:
912 t
->outputs
[i
] = ureg_DECL_output( ureg
,
913 TGSI_SEMANTIC_POSITION
, /* Z / Depth */
914 outputSemanticIndex
[i
] );
916 t
->outputs
[i
] = ureg_writemask( t
->outputs
[i
],
919 case TGSI_SEMANTIC_COLOR
:
920 t
->outputs
[i
] = ureg_DECL_output( ureg
,
922 outputSemanticIndex
[i
] );
931 for (i
= 0; i
< numInputs
; i
++) {
932 t
->inputs
[i
] = ureg_DECL_vs_input(ureg
, i
);
935 for (i
= 0; i
< numOutputs
; i
++) {
936 t
->outputs
[i
] = ureg_DECL_output( ureg
,
937 outputSemanticName
[i
],
938 outputSemanticIndex
[i
] );
939 if ((outputSemanticName
[i
] == TGSI_SEMANTIC_PSIZE
) && program
->Id
) {
940 static const gl_state_index pointSizeClampState
[STATE_LENGTH
]
941 = { STATE_INTERNAL
, STATE_POINT_SIZE_IMPL_CLAMP
, 0, 0, 0 };
942 /* XXX: note we are modifying the incoming shader here! Need to
943 * do this before emitting the constant decls below, or this
946 unsigned pointSizeClampConst
= _mesa_add_state_reference(program
->Parameters
,
947 pointSizeClampState
);
948 struct ureg_dst psizregtemp
= ureg_DECL_temporary( ureg
);
949 t
->pointSizeConst
= ureg_DECL_constant( ureg
, pointSizeClampConst
);
950 t
->psizregreal
= t
->outputs
[i
];
952 t
->outputs
[i
] = psizregtemp
;
955 if (passthrough_edgeflags
)
956 emit_edgeflags( t
, program
);
959 /* Declare address register.
961 if (program
->NumAddressRegs
> 0) {
962 debug_assert( program
->NumAddressRegs
== 1 );
963 t
->address
[0] = ureg_DECL_address( ureg
);
967 /* Emit constants and immediates. Mesa uses a single index space
968 * for these, so we put all the translated regs in t->constants.
970 if (program
->Parameters
) {
972 t
->constants
= CALLOC( program
->Parameters
->NumParameters
,
973 sizeof t
->constants
[0] );
974 if (t
->constants
== NULL
) {
975 ret
= PIPE_ERROR_OUT_OF_MEMORY
;
979 for (i
= 0; i
< program
->Parameters
->NumParameters
; i
++) {
980 switch (program
->Parameters
->Parameters
[i
].Type
) {
981 case PROGRAM_ENV_PARAM
:
982 case PROGRAM_LOCAL_PARAM
:
983 case PROGRAM_STATE_VAR
:
984 case PROGRAM_NAMED_PARAM
:
985 case PROGRAM_UNIFORM
:
986 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
989 /* Emit immediates only when there is no address register
990 * in use. FIXME: Be smarter and recognize param arrays:
991 * indirect addressing is only valid within the referenced
994 case PROGRAM_CONSTANT
:
995 if (program
->NumAddressRegs
> 0)
996 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
999 ureg_DECL_immediate( ureg
,
1000 program
->Parameters
->ParameterValues
[i
],
1009 /* texture samplers */
1010 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
1011 if (program
->SamplersUsed
& (1 << i
)) {
1012 t
->samplers
[i
] = ureg_DECL_sampler( ureg
, i
);
1016 /* Emit each instruction in turn:
1018 for (i
= 0; i
< program
->NumInstructions
; i
++) {
1019 set_insn_start( t
, ureg_get_instruction_number( ureg
));
1020 compile_instruction( t
, &program
->Instructions
[i
] );
1022 /* note can't do that easily at the end of prog due to
1023 possible early return */
1024 if (t
->prevInstWrotePsiz
&& program
->Id
) {
1025 set_insn_start( t
, ureg_get_instruction_number( ureg
));
1026 ureg_MAX( t
->ureg
, ureg_writemask(t
->outputs
[t
->psizoutindex
], WRITEMASK_X
),
1027 ureg_src(t
->outputs
[t
->psizoutindex
]),
1028 ureg_swizzle(t
->pointSizeConst
, 1,1,1,1));
1029 ureg_MIN( t
->ureg
, ureg_writemask(t
->psizregreal
, WRITEMASK_X
),
1030 ureg_src(t
->outputs
[t
->psizoutindex
]),
1031 ureg_swizzle(t
->pointSizeConst
, 2,2,2,2));
1033 t
->prevInstWrotePsiz
= GL_FALSE
;
1036 /* Fix up all emitted labels:
1038 for (i
= 0; i
< t
->labels_count
; i
++) {
1039 ureg_fixup_label( ureg
,
1041 t
->insn
[t
->labels
[i
].branch_target
] );
1050 debug_printf("%s: translate error flag set\n", __FUNCTION__
);
1058 * Tokens cannot be free with _mesa_free otherwise the builtin gallium
1059 * malloc debugging will get confused.
1062 st_free_tokens(const struct tgsi_token
*tokens
)
1064 FREE((void *)tokens
);