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
];
66 const GLuint
*inputMapping
;
67 const GLuint
*outputMapping
;
69 /* For every instruction that contains a label (eg CALL), keep
70 * details so that we can go back afterwards and emit the correct
71 * tgsi instruction number for each label.
75 unsigned labels_count
;
77 /* Keep a record of the tgsi instruction number that each mesa
78 * instruction starts at, will be used to fix up labels after
85 unsigned procType
; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */
91 static unsigned *get_label( struct st_translate
*t
,
92 unsigned branch_target
)
96 if (t
->labels_count
+ 1 >= t
->labels_size
) {
97 unsigned old_size
= t
->labels_size
;
98 t
->labels_size
= 1 << (util_logbase2(t
->labels_size
) + 1);
99 t
->labels
= REALLOC( t
->labels
,
100 old_size
* sizeof t
->labels
[0],
101 t
->labels_size
* sizeof t
->labels
[0] );
102 if (t
->labels
== NULL
) {
103 static unsigned dummy
;
109 i
= t
->labels_count
++;
110 t
->labels
[i
].branch_target
= branch_target
;
111 return &t
->labels
[i
].token
;
115 static void set_insn_start( struct st_translate
*t
,
118 if (t
->insn_count
+ 1 >= t
->insn_size
) {
119 unsigned old_size
= t
->insn_size
;
120 t
->insn_size
= 1 << (util_logbase2(t
->insn_size
) + 1);
121 t
->insn
= REALLOC( t
->insn
,
122 old_size
* sizeof t
->insn
[0],
123 t
->insn_size
* sizeof t
->insn
[0] );
124 if (t
->insn
== NULL
) {
130 t
->insn
[t
->insn_count
++] = start
;
135 * Map mesa register file to TGSI register file.
137 static struct ureg_dst
138 dst_register( struct st_translate
*t
,
139 gl_register_file file
,
143 case PROGRAM_UNDEFINED
:
144 return ureg_dst_undef();
146 case PROGRAM_TEMPORARY
:
147 if (ureg_dst_is_undef(t
->temps
[index
]))
148 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
150 return t
->temps
[index
];
153 return t
->outputs
[t
->outputMapping
[index
]];
155 case PROGRAM_ADDRESS
:
156 return t
->address
[index
];
160 return ureg_dst_undef();
165 static struct ureg_src
166 src_register( struct st_translate
*t
,
167 gl_register_file file
,
171 case PROGRAM_UNDEFINED
:
172 return ureg_src_undef();
174 case PROGRAM_TEMPORARY
:
176 if (ureg_dst_is_undef(t
->temps
[index
]))
177 t
->temps
[index
] = ureg_DECL_temporary( t
->ureg
);
178 return ureg_src(t
->temps
[index
]);
180 case PROGRAM_STATE_VAR
:
181 case PROGRAM_NAMED_PARAM
:
182 case PROGRAM_ENV_PARAM
:
183 case PROGRAM_LOCAL_PARAM
:
184 case PROGRAM_UNIFORM
:
186 return t
->constants
[index
];
187 case PROGRAM_CONSTANT
: /* ie, immediate */
189 return ureg_DECL_constant( t
->ureg
, 0 );
191 return t
->constants
[index
];
194 return t
->inputs
[t
->inputMapping
[index
]];
197 return ureg_src(t
->outputs
[t
->outputMapping
[index
]]); /* not needed? */
199 case PROGRAM_ADDRESS
:
200 return ureg_src(t
->address
[index
]);
204 return ureg_src_undef();
210 * Map mesa texture target to TGSI texture target.
213 translate_texture_target( GLuint textarget
,
217 switch( textarget
) {
218 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_SHADOW1D
;
219 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_SHADOW2D
;
220 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_SHADOWRECT
;
225 switch( textarget
) {
226 case TEXTURE_1D_INDEX
: return TGSI_TEXTURE_1D
;
227 case TEXTURE_2D_INDEX
: return TGSI_TEXTURE_2D
;
228 case TEXTURE_3D_INDEX
: return TGSI_TEXTURE_3D
;
229 case TEXTURE_CUBE_INDEX
: return TGSI_TEXTURE_CUBE
;
230 case TEXTURE_RECT_INDEX
: return TGSI_TEXTURE_RECT
;
233 return TGSI_TEXTURE_1D
;
238 static struct ureg_dst
239 translate_dst( struct st_translate
*t
,
240 const struct prog_dst_register
*DstReg
,
243 struct ureg_dst dst
= dst_register( t
,
247 dst
= ureg_writemask( dst
,
251 dst
= ureg_saturate( dst
);
254 dst
= ureg_dst_indirect( dst
, ureg_src(t
->address
[0]) );
260 static struct ureg_src
261 translate_src( struct st_translate
*t
,
262 const struct prog_src_register
*SrcReg
)
264 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
266 src
= ureg_swizzle( src
,
267 GET_SWZ( SrcReg
->Swizzle
, 0 ) & 0x3,
268 GET_SWZ( SrcReg
->Swizzle
, 1 ) & 0x3,
269 GET_SWZ( SrcReg
->Swizzle
, 2 ) & 0x3,
270 GET_SWZ( SrcReg
->Swizzle
, 3 ) & 0x3);
272 if (SrcReg
->Negate
== NEGATE_XYZW
)
273 src
= ureg_negate(src
);
278 if (SrcReg
->RelAddr
) {
279 src
= ureg_src_indirect( src
, ureg_src(t
->address
[0]));
280 /* If SrcReg->Index was negative, it was set to zero in
281 * src_register(). Reassign it now.
283 src
.Index
= SrcReg
->Index
;
290 static struct ureg_src
swizzle_4v( struct ureg_src src
,
291 const unsigned *swz
)
293 return ureg_swizzle( src
, swz
[0], swz
[1], swz
[2], swz
[3] );
298 * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG:
304 * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
306 static void emit_swz( struct st_translate
*t
,
308 const struct prog_src_register
*SrcReg
)
310 struct ureg_program
*ureg
= t
->ureg
;
311 struct ureg_src src
= src_register( t
, SrcReg
->File
, SrcReg
->Index
);
313 unsigned negate_mask
= SrcReg
->Negate
;
315 unsigned one_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ONE
) << 0 |
316 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ONE
) << 1 |
317 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ONE
) << 2 |
318 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ONE
) << 3);
320 unsigned zero_mask
= ((GET_SWZ(SrcReg
->Swizzle
, 0) == SWIZZLE_ZERO
) << 0 |
321 (GET_SWZ(SrcReg
->Swizzle
, 1) == SWIZZLE_ZERO
) << 1 |
322 (GET_SWZ(SrcReg
->Swizzle
, 2) == SWIZZLE_ZERO
) << 2 |
323 (GET_SWZ(SrcReg
->Swizzle
, 3) == SWIZZLE_ZERO
) << 3);
325 unsigned negative_one_mask
= one_mask
& negate_mask
;
326 unsigned positive_one_mask
= one_mask
& ~negate_mask
;
330 unsigned mul_swizzle
[4] = {0,0,0,0};
331 unsigned add_swizzle
[4] = {0,0,0,0};
332 unsigned src_swizzle
[4] = {0,0,0,0};
333 boolean need_add
= FALSE
;
334 boolean need_mul
= FALSE
;
336 if (dst
.WriteMask
== 0)
339 /* Is this just a MOV?
341 if (zero_mask
== 0 &&
343 (negate_mask
== 0 || negate_mask
== TGSI_WRITEMASK_XYZW
))
345 ureg_MOV( ureg
, dst
, translate_src( t
, SrcReg
));
351 #define IMM_NEG_ONE 2
353 imm
= ureg_imm3f( ureg
, 0, 1, -1 );
355 for (i
= 0; i
< 4; i
++) {
356 unsigned bit
= 1 << i
;
358 if (dst
.WriteMask
& bit
) {
359 if (positive_one_mask
& bit
) {
360 mul_swizzle
[i
] = IMM_ZERO
;
361 add_swizzle
[i
] = IMM_ONE
;
364 else if (negative_one_mask
& bit
) {
365 mul_swizzle
[i
] = IMM_ZERO
;
366 add_swizzle
[i
] = IMM_NEG_ONE
;
369 else if (zero_mask
& bit
) {
370 mul_swizzle
[i
] = IMM_ZERO
;
371 add_swizzle
[i
] = IMM_ZERO
;
375 add_swizzle
[i
] = IMM_ZERO
;
376 src_swizzle
[i
] = GET_SWZ(SrcReg
->Swizzle
, i
);
378 if (negate_mask
& bit
) {
379 mul_swizzle
[i
] = IMM_NEG_ONE
;
382 mul_swizzle
[i
] = IMM_ONE
;
388 if (need_mul
&& need_add
) {
391 swizzle_4v( src
, src_swizzle
),
392 swizzle_4v( imm
, mul_swizzle
),
393 swizzle_4v( imm
, add_swizzle
) );
398 swizzle_4v( src
, src_swizzle
),
399 swizzle_4v( imm
, mul_swizzle
) );
404 swizzle_4v( imm
, add_swizzle
) );
417 * Negate the value of DDY to match GL semantics where (0,0) is the
418 * lower-left corner of the window.
419 * Note that the GL_ARB_fragment_coord_conventions extension will
420 * effect this someday.
422 static void emit_ddy( struct st_translate
*t
,
424 const struct prog_src_register
*SrcReg
)
426 struct ureg_program
*ureg
= t
->ureg
;
427 struct ureg_src src
= translate_src( t
, SrcReg
);
428 src
= ureg_negate( src
);
429 ureg_DDY( ureg
, dst
, src
);
435 translate_opcode( unsigned op
)
439 return TGSI_OPCODE_ARL
;
441 return TGSI_OPCODE_ABS
;
443 return TGSI_OPCODE_ADD
;
445 return TGSI_OPCODE_BGNLOOP
;
447 return TGSI_OPCODE_BGNSUB
;
449 return TGSI_OPCODE_BRA
;
451 return TGSI_OPCODE_BRK
;
453 return TGSI_OPCODE_CAL
;
455 return TGSI_OPCODE_CMP
;
457 return TGSI_OPCODE_CONT
;
459 return TGSI_OPCODE_COS
;
461 return TGSI_OPCODE_DDX
;
463 return TGSI_OPCODE_DDY
;
465 return TGSI_OPCODE_DP2
;
467 return TGSI_OPCODE_DP2A
;
469 return TGSI_OPCODE_DP3
;
471 return TGSI_OPCODE_DP4
;
473 return TGSI_OPCODE_DPH
;
475 return TGSI_OPCODE_DST
;
477 return TGSI_OPCODE_ELSE
;
479 return TGSI_OPCODE_ENDIF
;
481 return TGSI_OPCODE_ENDLOOP
;
483 return TGSI_OPCODE_ENDSUB
;
485 return TGSI_OPCODE_EX2
;
487 return TGSI_OPCODE_EXP
;
489 return TGSI_OPCODE_FLR
;
491 return TGSI_OPCODE_FRC
;
493 return TGSI_OPCODE_IF
;
495 return TGSI_OPCODE_TRUNC
;
497 return TGSI_OPCODE_KIL
;
499 return TGSI_OPCODE_KILP
;
501 return TGSI_OPCODE_LG2
;
503 return TGSI_OPCODE_LOG
;
505 return TGSI_OPCODE_LIT
;
507 return TGSI_OPCODE_LRP
;
509 return TGSI_OPCODE_MAD
;
511 return TGSI_OPCODE_MAX
;
513 return TGSI_OPCODE_MIN
;
515 return TGSI_OPCODE_MOV
;
517 return TGSI_OPCODE_MUL
;
519 return TGSI_OPCODE_NOP
;
521 return TGSI_OPCODE_NRM
;
523 return TGSI_OPCODE_NRM4
;
525 return TGSI_OPCODE_POW
;
527 return TGSI_OPCODE_RCP
;
529 return TGSI_OPCODE_RET
;
531 return TGSI_OPCODE_RSQ
;
533 return TGSI_OPCODE_SCS
;
535 return TGSI_OPCODE_SEQ
;
537 return TGSI_OPCODE_SGE
;
539 return TGSI_OPCODE_SGT
;
541 return TGSI_OPCODE_SIN
;
543 return TGSI_OPCODE_SLE
;
545 return TGSI_OPCODE_SLT
;
547 return TGSI_OPCODE_SNE
;
549 return TGSI_OPCODE_SSG
;
551 return TGSI_OPCODE_SUB
;
553 return TGSI_OPCODE_TEX
;
555 return TGSI_OPCODE_TXB
;
557 return TGSI_OPCODE_TXD
;
559 return TGSI_OPCODE_TXL
;
561 return TGSI_OPCODE_TXP
;
563 return TGSI_OPCODE_XPD
;
565 return TGSI_OPCODE_END
;
568 return TGSI_OPCODE_NOP
;
575 struct st_translate
*t
,
576 const struct prog_instruction
*inst
)
578 struct ureg_program
*ureg
= t
->ureg
;
580 struct ureg_dst dst
[1];
581 struct ureg_src src
[4];
585 num_dst
= _mesa_num_inst_dst_regs( inst
->Opcode
);
586 num_src
= _mesa_num_inst_src_regs( inst
->Opcode
);
589 dst
[0] = translate_dst( t
,
591 inst
->SaturateMode
);
593 for (i
= 0; i
< num_src
; i
++)
594 src
[i
] = translate_src( t
, &inst
->SrcReg
[i
] );
596 switch( inst
->Opcode
) {
598 emit_swz( t
, dst
[0], &inst
->SrcReg
[0] );
606 debug_assert(num_dst
== 0);
607 ureg_label_insn( ureg
,
608 translate_opcode( inst
->Opcode
),
610 get_label( t
, inst
->BranchTarget
));
618 src
[num_src
++] = t
->samplers
[inst
->TexSrcUnit
];
620 translate_opcode( inst
->Opcode
),
622 translate_texture_target( inst
->TexSrcTarget
,
628 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XY
);
630 translate_opcode( inst
->Opcode
),
636 dst
[0] = ureg_writemask(dst
[0], TGSI_WRITEMASK_XYZ
);
638 translate_opcode( inst
->Opcode
),
647 /* At some point, a motivated person could add a better
648 * implementation of noise. Currently not even the nvidia
649 * binary drivers do anything more than this. In any case, the
650 * place to do this is in the GL state tracker, not the poor
653 ureg_MOV( ureg
, dst
[0], ureg_imm1f(ureg
, 0.5) );
657 emit_ddy( t
, dst
[0], &inst
->SrcReg
[0] );
662 translate_opcode( inst
->Opcode
),
670 * Emit the TGSI instructions to adjust the WPOS pixel center convention
673 emit_adjusted_wpos( struct st_translate
*t
,
674 const struct gl_program
*program
, GLfloat value
)
676 struct ureg_program
*ureg
= t
->ureg
;
677 struct ureg_dst wpos_temp
= ureg_DECL_temporary(ureg
);
678 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
680 ureg_ADD(ureg
, ureg_writemask(wpos_temp
, TGSI_WRITEMASK_X
| TGSI_WRITEMASK_Y
),
681 wpos_input
, ureg_imm1f(ureg
, value
));
683 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
687 * Emit the TGSI instructions for inverting the WPOS y coordinate.
690 emit_inverted_wpos( struct st_translate
*t
,
691 const struct gl_program
*program
)
693 struct ureg_program
*ureg
= t
->ureg
;
695 /* Fragment program uses fragment position input.
696 * Need to replace instances of INPUT[WPOS] with temp T
697 * where T = INPUT[WPOS] by y is inverted.
699 static const gl_state_index winSizeState
[STATE_LENGTH
]
700 = { STATE_INTERNAL
, STATE_FB_SIZE
, 0, 0, 0 };
702 /* XXX: note we are modifying the incoming shader here! Need to
703 * do this before emitting the constant decls below, or this
706 unsigned winHeightConst
= _mesa_add_state_reference(program
->Parameters
,
709 struct ureg_src winsize
= ureg_DECL_constant( ureg
, winHeightConst
);
710 struct ureg_dst wpos_temp
;
711 struct ureg_src wpos_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]];
713 /* MOV wpos_temp, input[wpos]
715 if (wpos_input
.File
== TGSI_FILE_TEMPORARY
)
716 wpos_temp
= ureg_dst(wpos_input
);
718 wpos_temp
= ureg_DECL_temporary( ureg
);
719 ureg_MOV( ureg
, wpos_temp
, wpos_input
);
722 /* SUB wpos_temp.y, winsize_const, wpos_input
725 ureg_writemask(wpos_temp
, TGSI_WRITEMASK_Y
),
729 /* Use wpos_temp as position input from here on:
731 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_WPOS
]] = ureg_src(wpos_temp
);
736 * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
737 * TGSI uses +1 for front, -1 for back.
738 * This function converts the TGSI value to the GL value. Simply clamping/
739 * saturating the value to [0,1] does the job.
742 emit_face_var( struct st_translate
*t
,
743 const struct gl_program
*program
)
745 struct ureg_program
*ureg
= t
->ureg
;
746 struct ureg_dst face_temp
= ureg_DECL_temporary( ureg
);
747 struct ureg_src face_input
= t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]];
749 /* MOV_SAT face_temp, input[face]
751 face_temp
= ureg_saturate( face_temp
);
752 ureg_MOV( ureg
, face_temp
, face_input
);
754 /* Use face_temp as face input from here on:
756 t
->inputs
[t
->inputMapping
[FRAG_ATTRIB_FACE
]] = ureg_src(face_temp
);
761 emit_edgeflags( struct st_translate
*t
,
762 const struct gl_program
*program
)
764 struct ureg_program
*ureg
= t
->ureg
;
765 struct ureg_dst edge_dst
= t
->outputs
[t
->outputMapping
[VERT_RESULT_EDGE
]];
766 struct ureg_src edge_src
= t
->inputs
[t
->inputMapping
[VERT_ATTRIB_EDGEFLAG
]];
768 ureg_MOV( ureg
, edge_dst
, edge_src
);
773 * Translate Mesa program to TGSI format.
774 * \param program the program to translate
775 * \param numInputs number of input registers used
776 * \param inputMapping maps Mesa fragment program inputs to TGSI generic
778 * \param inputSemanticName the TGSI_SEMANTIC flag for each input
779 * \param inputSemanticIndex the semantic index (ex: which texcoord) for
781 * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
782 * \param numOutputs number of output registers used
783 * \param outputMapping maps Mesa fragment program outputs to TGSI
785 * \param outputSemanticName the TGSI_SEMANTIC flag for each output
786 * \param outputSemanticIndex the semantic index (ex: which texcoord) for
789 * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
792 st_translate_mesa_program(
795 struct ureg_program
*ureg
,
796 const struct gl_program
*program
,
798 const GLuint inputMapping
[],
799 const ubyte inputSemanticName
[],
800 const ubyte inputSemanticIndex
[],
801 const GLuint interpMode
[],
803 const GLuint outputMapping
[],
804 const ubyte outputSemanticName
[],
805 const ubyte outputSemanticIndex
[],
806 boolean passthrough_edgeflags
)
808 struct st_translate translate
, *t
;
810 enum pipe_error ret
= PIPE_OK
;
813 memset(t
, 0, sizeof *t
);
815 t
->procType
= procType
;
816 t
->inputMapping
= inputMapping
;
817 t
->outputMapping
= outputMapping
;
820 /*_mesa_print_program(program);*/
823 * Declare input attributes.
825 if (procType
== TGSI_PROCESSOR_FRAGMENT
) {
826 struct gl_fragment_program
* fp
= (struct gl_fragment_program
*)program
;
827 for (i
= 0; i
< numInputs
; i
++) {
828 t
->inputs
[i
] = ureg_DECL_fs_input(ureg
,
829 inputSemanticName
[i
],
830 inputSemanticIndex
[i
],
834 if (program
->InputsRead
& FRAG_BIT_WPOS
) {
835 /* Must do this after setting up t->inputs, and before
836 * emitting constant references, below:
838 struct pipe_screen
* pscreen
= st_context(ctx
)->pipe
->screen
;
839 boolean invert
= FALSE
;
841 if (fp
->OriginUpperLeft
) {
842 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
)) {
844 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
)) {
845 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
852 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT
))
853 ureg_property_fs_coord_origin(ureg
, TGSI_FS_COORD_ORIGIN_LOWER_LEFT
);
854 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT
))
860 if (fp
->PixelCenterInteger
) {
861 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
))
862 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
863 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
))
864 emit_adjusted_wpos(t
, program
, invert
? 0.5f
: -0.5f
);
869 if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER
)) {
871 else if (pscreen
->get_param(pscreen
, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER
)) {
872 ureg_property_fs_coord_pixel_center(ureg
, TGSI_FS_COORD_PIXEL_CENTER_INTEGER
);
873 emit_adjusted_wpos(t
, program
, invert
? -0.5f
: 0.5f
);
879 /* we invert after adjustment so that we avoid the MOV to temporary,
880 * and reuse the adjustment ADD instead */
882 emit_inverted_wpos(t
, program
);
885 if (program
->InputsRead
& FRAG_BIT_FACE
) {
886 emit_face_var( t
, program
);
890 * Declare output attributes.
892 for (i
= 0; i
< numOutputs
; i
++) {
893 switch (outputSemanticName
[i
]) {
894 case TGSI_SEMANTIC_POSITION
:
895 t
->outputs
[i
] = ureg_DECL_output( ureg
,
896 TGSI_SEMANTIC_POSITION
, /* Z / Depth */
897 outputSemanticIndex
[i
] );
899 t
->outputs
[i
] = ureg_writemask( t
->outputs
[i
],
902 case TGSI_SEMANTIC_COLOR
:
903 t
->outputs
[i
] = ureg_DECL_output( ureg
,
905 outputSemanticIndex
[i
] );
914 for (i
= 0; i
< numInputs
; i
++) {
915 t
->inputs
[i
] = ureg_DECL_vs_input(ureg
, i
);
918 for (i
= 0; i
< numOutputs
; i
++) {
919 t
->outputs
[i
] = ureg_DECL_output( ureg
,
920 outputSemanticName
[i
],
921 outputSemanticIndex
[i
] );
923 if (passthrough_edgeflags
)
924 emit_edgeflags( t
, program
);
927 /* Declare address register.
929 if (program
->NumAddressRegs
> 0) {
930 debug_assert( program
->NumAddressRegs
== 1 );
931 t
->address
[0] = ureg_DECL_address( ureg
);
935 /* Emit constants and immediates. Mesa uses a single index space
936 * for these, so we put all the translated regs in t->constants.
938 if (program
->Parameters
) {
940 t
->constants
= CALLOC( program
->Parameters
->NumParameters
,
941 sizeof t
->constants
[0] );
942 if (t
->constants
== NULL
) {
943 ret
= PIPE_ERROR_OUT_OF_MEMORY
;
947 for (i
= 0; i
< program
->Parameters
->NumParameters
; i
++) {
948 switch (program
->Parameters
->Parameters
[i
].Type
) {
949 case PROGRAM_ENV_PARAM
:
950 case PROGRAM_LOCAL_PARAM
:
951 case PROGRAM_STATE_VAR
:
952 case PROGRAM_NAMED_PARAM
:
953 case PROGRAM_UNIFORM
:
954 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
957 /* Emit immediates only when there is no address register
958 * in use. FIXME: Be smarter and recognize param arrays:
959 * indirect addressing is only valid within the referenced
962 case PROGRAM_CONSTANT
:
963 if (program
->NumAddressRegs
> 0)
964 t
->constants
[i
] = ureg_DECL_constant( ureg
, i
);
967 ureg_DECL_immediate( ureg
,
968 program
->Parameters
->ParameterValues
[i
],
977 /* texture samplers */
978 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
979 if (program
->SamplersUsed
& (1 << i
)) {
980 t
->samplers
[i
] = ureg_DECL_sampler( ureg
, i
);
984 /* Emit each instruction in turn:
986 for (i
= 0; i
< program
->NumInstructions
; i
++) {
987 set_insn_start( t
, ureg_get_instruction_number( ureg
));
988 compile_instruction( t
, &program
->Instructions
[i
] );
991 /* Fix up all emitted labels:
993 for (i
= 0; i
< t
->labels_count
; i
++) {
994 ureg_fixup_label( ureg
,
996 t
->insn
[t
->labels
[i
].branch_target
] );
1005 debug_printf("%s: translate error flag set\n", __FUNCTION__
);
1013 * Tokens cannot be free with _mesa_free otherwise the builtin gallium
1014 * malloc debugging will get confused.
1017 st_free_tokens(const struct tgsi_token
*tokens
)
1019 FREE((void *)tokens
);