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 "shader/prog_print.h"
44 #include "util/u_debug.h"
45 #include "util/u_math.h"
46 #include "util/u_memory.h"
49 unsigned branch_target
;
55 * Intermediate state used during shader translation.
58 struct ureg_program
*ureg
;
60 struct ureg_dst temps
[MAX_PROGRAM_TEMPS
];
61 struct ureg_src
*constants
;
62 struct ureg_dst outputs
[PIPE_MAX_SHADER_OUTPUTS
];
63 struct ureg_src inputs
[PIPE_MAX_SHADER_INPUTS
];
64 struct ureg_dst address
[1];
65 struct ureg_src samplers
[PIPE_MAX_SAMPLERS
];
67 const GLuint
*inputMapping
;
68 const GLuint
*outputMapping
;
70 /* For every instruction that contains a label (eg CALL), keep
71 * details so that we can go back afterwards and emit the correct
72 * tgsi instruction number for each label.
76 unsigned labels_count
;
78 /* Keep a record of the tgsi instruction number that each mesa
79 * instruction starts at, will be used to fix up labels after
86 unsigned procType
; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */
92 static unsigned *get_label( struct st_translate
*t
,
93 unsigned branch_target
)
97 if (t
->labels_count
+ 1 >= t
->labels_size
) {
98 unsigned old_size
= t
->labels_size
;
99 t
->labels_size
= 1 << (util_logbase2(t
->labels_size
) + 1);
100 t
->labels
= REALLOC( t
->labels
,
101 old_size
* sizeof t
->labels
[0],
102 t
->labels_size
* sizeof t
->labels
[0] );
103 if (t
->labels
== NULL
) {
104 static unsigned dummy
;
110 i
= t
->labels_count
++;
111 t
->labels
[i
].branch_target
= branch_target
;
112 return &t
->labels
[i
].token
;
116 static void set_insn_start( struct st_translate
*t
,
119 if (t
->insn_count
+ 1 >= t
->insn_size
) {
120 unsigned old_size
= t
->insn_size
;
121 t
->insn_size
= 1 << (util_logbase2(t
->insn_size
) + 1);
122 t
->insn
= REALLOC( t
->insn
,
123 old_size
* sizeof t
->insn
[0],
124 t
->insn_size
* sizeof t
->insn
[0] );
125 if (t
->insn
== NULL
) {
131 t
->insn
[t
->insn_count
++] = start
;
136 * Map mesa register file to TGSI register file.
138 static struct ureg_dst
139 dst_register( struct st_translate
*t
,
140 gl_register_file file
,
144 case PROGRAM_UNDEFINED
:
145 return ureg_dst_undef();
147 case PROGRAM_TEMPORARY
:
148 if (ureg_dst_is_undef(t
->temps
[index
]))
149 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
151 return t
->temps
[index
];
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
),
671 * Emit the TGSI instructions to adjust the WPOS pixel center convention
674 emit_adjusted_wpos( struct st_translate
*t
,
675 const struct gl_program
*program
, GLfloat value
)
677 struct ureg_program
*ureg
= t
->ureg
;
678 struct ureg_dst wpos_temp
= ureg_DECL_temporary(ureg
);
679 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
681 ureg_ADD(ureg
, ureg_writemask(wpos_temp
, TGSI_WRITEMASK_X
| TGSI_WRITEMASK_Y
),
682 wpos_input
, ureg_imm1f(ureg
, value
));
684 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
688 * Emit the TGSI instructions for inverting the WPOS y coordinate.
691 emit_inverted_wpos( struct st_translate
*t
,
692 const struct gl_program
*program
)
694 struct ureg_program
*ureg
= t
->ureg
;
696 /* Fragment program uses fragment position input.
697 * Need to replace instances of INPUT[WPOS] with temp T
698 * where T = INPUT[WPOS] by y is inverted.
700 static const gl_state_index winSizeState
[STATE_LENGTH
]
701 = { STATE_INTERNAL
, STATE_FB_SIZE
, 0, 0, 0 };
703 /* XXX: note we are modifying the incoming shader here! Need to
704 * do this before emitting the constant decls below, or this
707 unsigned winHeightConst
= _mesa_add_state_reference(program
->Parameters
,
710 struct ureg_src winsize
= ureg_DECL_constant( ureg
, winHeightConst
);
711 struct ureg_dst wpos_temp
;
712 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
714 /* MOV wpos_temp, input[wpos]
716 if (wpos_input
.File
== TGSI_FILE_TEMPORARY
)
717 wpos_temp
= ureg_dst(wpos_input
);
719 wpos_temp
= ureg_DECL_temporary( ureg
);
720 ureg_MOV( ureg
, wpos_temp
, wpos_input
);
723 /* SUB wpos_temp.y, winsize_const, wpos_input
726 ureg_writemask(wpos_temp
, TGSI_WRITEMASK_Y
),
730 /* Use wpos_temp as position input from here on:
732 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
737 * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
738 * TGSI uses +1 for front, -1 for back.
739 * This function converts the TGSI value to the GL value. Simply clamping/
740 * saturating the value to [0,1] does the job.
743 emit_face_var( struct st_translate
*t
,
744 const struct gl_program
*program
)
746 struct ureg_program
*ureg
= t
->ureg
;
747 struct ureg_dst face_temp
= ureg_DECL_temporary( ureg
);
748 struct ureg_src face_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]];
750 /* MOV_SAT face_temp, input[face]
752 face_temp
= ureg_saturate( face_temp
);
753 ureg_MOV( ureg
, face_temp
, face_input
);
755 /* Use face_temp as face input from here on:
757 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]] = ureg_src(face_temp
);
762 emit_edgeflags( struct st_translate
*t
,
763 const struct gl_program
*program
)
765 struct ureg_program
*ureg
= t
->ureg
;
766 struct ureg_dst edge_dst
= t
->outputs
[t
->outputMapping
[VERT_RESULT_EDGE
]];
767 struct ureg_src edge_src
= t
->inputs
[t
->inputMapping
[VERT_ATTRIB_EDGEFLAG
]];
769 ureg_MOV( ureg
, edge_dst
, edge_src
);
774 * Translate Mesa program to TGSI format.
775 * \param program the program to translate
776 * \param numInputs number of input registers used
777 * \param inputMapping maps Mesa fragment program inputs to TGSI generic
779 * \param inputSemanticName the TGSI_SEMANTIC flag for each input
780 * \param inputSemanticIndex the semantic index (ex: which texcoord) for
782 * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
783 * \param numOutputs number of output registers used
784 * \param outputMapping maps Mesa fragment program outputs to TGSI
786 * \param outputSemanticName the TGSI_SEMANTIC flag for each output
787 * \param outputSemanticIndex the semantic index (ex: which texcoord) for
790 * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
793 st_translate_mesa_program(
796 struct ureg_program
*ureg
,
797 const struct gl_program
*program
,
799 const GLuint inputMapping
[],
800 const ubyte inputSemanticName
[],
801 const ubyte inputSemanticIndex
[],
802 const GLuint interpMode
[],
804 const GLuint outputMapping
[],
805 const ubyte outputSemanticName
[],
806 const ubyte outputSemanticIndex
[],
807 boolean passthrough_edgeflags
)
809 struct st_translate translate
, *t
;
811 enum pipe_error ret
= PIPE_OK
;
814 memset(t
, 0, sizeof *t
);
816 t
->procType
= procType
;
817 t
->inputMapping
= inputMapping
;
818 t
->outputMapping
= outputMapping
;
821 /*_mesa_print_program(program);*/
824 * Declare input attributes.
826 if (procType
== TGSI_PROCESSOR_FRAGMENT
) {
827 struct gl_fragment_program
* fp
= (struct gl_fragment_program
*)program
;
828 for (i
= 0; i
< numInputs
; i
++) {
829 t
->inputs
[i
] = ureg_DECL_fs_input(ureg
,
830 inputSemanticName
[i
],
831 inputSemanticIndex
[i
],
835 if (program
->InputsRead
& FRAG_BIT_WPOS
) {
836 /* Must do this after setting up t->inputs, and before
837 * emitting constant references, below:
839 struct pipe_screen
* pscreen
= st_context(ctx
)->pipe
->screen
;
840 boolean invert
= FALSE
;
842 if (fp
->OriginUpperLeft
) {
843 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
)) {
845 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
)) {
846 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
853 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
))
854 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
855 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
))
861 if (fp
->PixelCenterInteger
) {
862 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
))
863 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
864 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
))
865 emit_adjusted_wpos(t
, program
, invert
? 0.5f
: -0.5f
);
870 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
)) {
872 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
)) {
873 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
874 emit_adjusted_wpos(t
, program
, invert
? -0.5f
: 0.5f
);
880 /* we invert after adjustment so that we avoid the MOV to temporary,
881 * and reuse the adjustment ADD instead */
883 emit_inverted_wpos(t
, program
);
886 if (program
->InputsRead
& FRAG_BIT_FACE
) {
887 emit_face_var( t
, program
);
891 * Declare output attributes.
893 for (i
= 0; i
< numOutputs
; i
++) {
894 switch (outputSemanticName
[i
]) {
895 case TGSI_SEMANTIC_POSITION
:
896 t
->outputs
[i
] = ureg_DECL_output( ureg
,
897 TGSI_SEMANTIC_POSITION
, /* Z / Depth */
898 outputSemanticIndex
[i
] );
900 t
->outputs
[i
] = ureg_writemask( t
->outputs
[i
],
903 case TGSI_SEMANTIC_COLOR
:
904 t
->outputs
[i
] = ureg_DECL_output( ureg
,
906 outputSemanticIndex
[i
] );
915 for (i
= 0; i
< numInputs
; i
++) {
916 t
->inputs
[i
] = ureg_DECL_vs_input(ureg
, i
);
919 for (i
= 0; i
< numOutputs
; i
++) {
920 t
->outputs
[i
] = ureg_DECL_output( ureg
,
921 outputSemanticName
[i
],
922 outputSemanticIndex
[i
] );
924 if (passthrough_edgeflags
)
925 emit_edgeflags( t
, program
);
928 /* Declare address register.
930 if (program
->NumAddressRegs
> 0) {
931 debug_assert( program
->NumAddressRegs
== 1 );
932 t
->address
[0] = ureg_DECL_address( ureg
);
936 /* Emit constants and immediates. Mesa uses a single index space
937 * for these, so we put all the translated regs in t->constants.
939 if (program
->Parameters
) {
941 t
->constants
= CALLOC( program
->Parameters
->NumParameters
,
942 sizeof t
->constants
[0] );
943 if (t
->constants
== NULL
) {
944 ret
= PIPE_ERROR_OUT_OF_MEMORY
;
948 for (i
= 0; i
< program
->Parameters
->NumParameters
; i
++) {
949 switch (program
->Parameters
->Parameters
[i
].Type
) {
950 case PROGRAM_ENV_PARAM
:
951 case PROGRAM_LOCAL_PARAM
:
952 case PROGRAM_STATE_VAR
:
953 case PROGRAM_NAMED_PARAM
:
954 case PROGRAM_UNIFORM
:
955 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
958 /* Emit immediates only when there is no address register
959 * in use. FIXME: Be smarter and recognize param arrays:
960 * indirect addressing is only valid within the referenced
963 case PROGRAM_CONSTANT
:
964 if (program
->NumAddressRegs
> 0)
965 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
968 ureg_DECL_immediate( ureg
,
969 program
->Parameters
->ParameterValues
[i
],
978 /* texture samplers */
979 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
980 if (program
->SamplersUsed
& (1 << i
)) {
981 t
->samplers
[i
] = ureg_DECL_sampler( ureg
, i
);
985 /* Emit each instruction in turn:
987 for (i
= 0; i
< program
->NumInstructions
; i
++) {
988 set_insn_start( t
, ureg_get_instruction_number( ureg
));
989 compile_instruction( t
, &program
->Instructions
[i
] );
992 /* Fix up all emitted labels:
994 for (i
= 0; i
< t
->labels_count
; i
++) {
995 ureg_fixup_label( ureg
,
997 t
->insn
[t
->labels
[i
].branch_target
] );
1006 debug_printf("%s: translate error flag set\n", __FUNCTION__
);
1014 * Tokens cannot be free with _mesa_free otherwise the builtin gallium
1015 * malloc debugging will get confused.
1018 st_free_tokens(const struct tgsi_token
*tokens
)
1020 FREE((void *)tokens
);