2 * Copyright (C) 2005-2007 Brian Paul All Rights Reserved.
3 * Copyright (C) 2008 VMware, Inc. All Rights Reserved.
4 * Copyright © 2010 Intel Corporation
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
27 * \file ir_to_mesa.cpp
29 * Translates the IR to ARB_fragment_program text if possible,
35 #include "ir_visitor.h"
36 #include "ir_print_visitor.h"
37 #include "ir_expression_flattening.h"
38 #include "glsl_types.h"
39 #include "glsl_parser_extras.h"
40 #include "../glsl/program.h"
41 #include "ir_optimization.h"
45 #include "main/mtypes.h"
46 #include "main/shaderapi.h"
47 #include "main/shaderobj.h"
48 #include "main/uniforms.h"
49 #include "program/hash_table.h"
50 #include "program/prog_instruction.h"
51 #include "program/prog_optimize.h"
52 #include "program/prog_print.h"
53 #include "program/program.h"
54 #include "program/prog_uniform.h"
55 #include "program/prog_parameter.h"
58 static int swizzle_for_size(int size
);
61 * This struct is a corresponding struct to Mesa prog_src_register, with
64 typedef struct ir_to_mesa_src_reg
{
65 ir_to_mesa_src_reg(int file
, int index
, const glsl_type
*type
)
69 if (type
&& (type
->is_scalar() || type
->is_vector() || type
->is_matrix()))
70 this->swizzle
= swizzle_for_size(type
->vector_elements
);
72 this->swizzle
= SWIZZLE_XYZW
;
79 this->file
= PROGRAM_UNDEFINED
;
82 int file
; /**< PROGRAM_* from Mesa */
83 int index
; /**< temporary index, VERT_ATTRIB_*, FRAG_ATTRIB_*, etc. */
84 GLuint swizzle
; /**< SWIZZLE_XYZWONEZERO swizzles from Mesa. */
85 int negate
; /**< NEGATE_XYZW mask from mesa */
86 /** Register index should be offset by the integer in this reg. */
87 ir_to_mesa_src_reg
*reladdr
;
90 typedef struct ir_to_mesa_dst_reg
{
91 int file
; /**< PROGRAM_* from Mesa */
92 int index
; /**< temporary index, VERT_ATTRIB_*, FRAG_ATTRIB_*, etc. */
93 int writemask
; /**< Bitfield of WRITEMASK_[XYZW] */
95 /** Register index should be offset by the integer in this reg. */
96 ir_to_mesa_src_reg
*reladdr
;
99 extern ir_to_mesa_src_reg ir_to_mesa_undef
;
101 class ir_to_mesa_instruction
: public exec_node
{
104 ir_to_mesa_dst_reg dst_reg
;
105 ir_to_mesa_src_reg src_reg
[3];
106 /** Pointer to the ir source this tree came from for debugging */
108 GLboolean cond_update
;
109 int sampler
; /**< sampler index */
110 int tex_target
; /**< One of TEXTURE_*_INDEX */
111 GLboolean tex_shadow
;
113 class function_entry
*function
; /* Set on OPCODE_CAL or OPCODE_BGNSUB */
116 class variable_storage
: public exec_node
{
118 variable_storage(ir_variable
*var
, int file
, int index
)
119 : file(file
), index(index
), var(var
)
126 ir_variable
*var
; /* variable that maps to this, if any */
129 class function_entry
: public exec_node
{
131 ir_function_signature
*sig
;
134 * identifier of this function signature used by the program.
136 * At the point that Mesa instructions for function calls are
137 * generated, we don't know the address of the first instruction of
138 * the function body. So we make the BranchTarget that is called a
139 * small integer and rewrite them during set_branchtargets().
144 * Pointer to first instruction of the function body.
146 * Set during function body emits after main() is processed.
148 ir_to_mesa_instruction
*bgn_inst
;
151 * Index of the first instruction of the function body in actual
154 * Set after convertion from ir_to_mesa_instruction to prog_instruction.
158 /** Storage for the return value. */
159 ir_to_mesa_src_reg return_reg
;
162 class ir_to_mesa_visitor
: public ir_visitor
{
164 ir_to_mesa_visitor();
165 ~ir_to_mesa_visitor();
167 function_entry
*current_function
;
170 struct gl_program
*prog
;
174 variable_storage
*find_variable_storage(ir_variable
*var
);
176 function_entry
*get_function_signature(ir_function_signature
*sig
);
178 ir_to_mesa_src_reg
get_temp(const glsl_type
*type
);
179 void reladdr_to_temp(ir_instruction
*ir
,
180 ir_to_mesa_src_reg
*reg
, int *num_reladdr
);
182 struct ir_to_mesa_src_reg
src_reg_for_float(float val
);
185 * \name Visit methods
187 * As typical for the visitor pattern, there must be one \c visit method for
188 * each concrete subclass of \c ir_instruction. Virtual base classes within
189 * the hierarchy should not have \c visit methods.
192 virtual void visit(ir_variable
*);
193 virtual void visit(ir_loop
*);
194 virtual void visit(ir_loop_jump
*);
195 virtual void visit(ir_function_signature
*);
196 virtual void visit(ir_function
*);
197 virtual void visit(ir_expression
*);
198 virtual void visit(ir_swizzle
*);
199 virtual void visit(ir_dereference_variable
*);
200 virtual void visit(ir_dereference_array
*);
201 virtual void visit(ir_dereference_record
*);
202 virtual void visit(ir_assignment
*);
203 virtual void visit(ir_constant
*);
204 virtual void visit(ir_call
*);
205 virtual void visit(ir_return
*);
206 virtual void visit(ir_discard
*);
207 virtual void visit(ir_texture
*);
208 virtual void visit(ir_if
*);
211 struct ir_to_mesa_src_reg result
;
213 /** List of variable_storage */
216 /** List of function_entry */
217 exec_list function_signatures
;
218 int next_signature_id
;
220 /** List of ir_to_mesa_instruction */
221 exec_list instructions
;
223 ir_to_mesa_instruction
*ir_to_mesa_emit_op0(ir_instruction
*ir
,
224 enum prog_opcode op
);
226 ir_to_mesa_instruction
*ir_to_mesa_emit_op1(ir_instruction
*ir
,
228 ir_to_mesa_dst_reg dst
,
229 ir_to_mesa_src_reg src0
);
231 ir_to_mesa_instruction
*ir_to_mesa_emit_op2(ir_instruction
*ir
,
233 ir_to_mesa_dst_reg dst
,
234 ir_to_mesa_src_reg src0
,
235 ir_to_mesa_src_reg src1
);
237 ir_to_mesa_instruction
*ir_to_mesa_emit_op3(ir_instruction
*ir
,
239 ir_to_mesa_dst_reg dst
,
240 ir_to_mesa_src_reg src0
,
241 ir_to_mesa_src_reg src1
,
242 ir_to_mesa_src_reg src2
);
244 void ir_to_mesa_emit_scalar_op1(ir_instruction
*ir
,
246 ir_to_mesa_dst_reg dst
,
247 ir_to_mesa_src_reg src0
);
249 void ir_to_mesa_emit_scalar_op2(ir_instruction
*ir
,
251 ir_to_mesa_dst_reg dst
,
252 ir_to_mesa_src_reg src0
,
253 ir_to_mesa_src_reg src1
);
255 GLboolean
try_emit_mad(ir_expression
*ir
,
258 int add_uniform(const char *name
,
259 const glsl_type
*type
,
260 ir_constant
*constant
);
261 void add_aggregate_uniform(ir_instruction
*ir
,
263 const struct glsl_type
*type
,
264 ir_constant
*constant
,
265 struct ir_to_mesa_dst_reg temp
);
267 struct hash_table
*sampler_map
;
269 void set_sampler_location(ir_variable
*sampler
, int location
);
270 int get_sampler_location(ir_variable
*sampler
);
275 ir_to_mesa_src_reg ir_to_mesa_undef
= ir_to_mesa_src_reg(PROGRAM_UNDEFINED
, 0, NULL
);
277 ir_to_mesa_dst_reg ir_to_mesa_undef_dst
= {
278 PROGRAM_UNDEFINED
, 0, SWIZZLE_NOOP
, COND_TR
, NULL
,
281 ir_to_mesa_dst_reg ir_to_mesa_address_reg
= {
282 PROGRAM_ADDRESS
, 0, WRITEMASK_X
, COND_TR
, NULL
285 static int swizzle_for_size(int size
)
287 int size_swizzles
[4] = {
288 MAKE_SWIZZLE4(SWIZZLE_X
, SWIZZLE_X
, SWIZZLE_X
, SWIZZLE_X
),
289 MAKE_SWIZZLE4(SWIZZLE_X
, SWIZZLE_Y
, SWIZZLE_Y
, SWIZZLE_Y
),
290 MAKE_SWIZZLE4(SWIZZLE_X
, SWIZZLE_Y
, SWIZZLE_Z
, SWIZZLE_Z
),
291 MAKE_SWIZZLE4(SWIZZLE_X
, SWIZZLE_Y
, SWIZZLE_Z
, SWIZZLE_W
),
294 return size_swizzles
[size
- 1];
297 ir_to_mesa_instruction
*
298 ir_to_mesa_visitor::ir_to_mesa_emit_op3(ir_instruction
*ir
,
300 ir_to_mesa_dst_reg dst
,
301 ir_to_mesa_src_reg src0
,
302 ir_to_mesa_src_reg src1
,
303 ir_to_mesa_src_reg src2
)
305 ir_to_mesa_instruction
*inst
= new(mem_ctx
) ir_to_mesa_instruction();
308 /* If we have to do relative addressing, we want to load the ARL
309 * reg directly for one of the regs, and preload the other reladdr
310 * sources into temps.
312 num_reladdr
+= dst
.reladdr
!= NULL
;
313 num_reladdr
+= src0
.reladdr
!= NULL
;
314 num_reladdr
+= src1
.reladdr
!= NULL
;
315 num_reladdr
+= src2
.reladdr
!= NULL
;
317 reladdr_to_temp(ir
, &src2
, &num_reladdr
);
318 reladdr_to_temp(ir
, &src1
, &num_reladdr
);
319 reladdr_to_temp(ir
, &src0
, &num_reladdr
);
322 ir_to_mesa_emit_op1(ir
, OPCODE_ARL
, ir_to_mesa_address_reg
,
327 assert(num_reladdr
== 0);
331 inst
->src_reg
[0] = src0
;
332 inst
->src_reg
[1] = src1
;
333 inst
->src_reg
[2] = src2
;
336 inst
->function
= NULL
;
338 this->instructions
.push_tail(inst
);
344 ir_to_mesa_instruction
*
345 ir_to_mesa_visitor::ir_to_mesa_emit_op2(ir_instruction
*ir
,
347 ir_to_mesa_dst_reg dst
,
348 ir_to_mesa_src_reg src0
,
349 ir_to_mesa_src_reg src1
)
351 return ir_to_mesa_emit_op3(ir
, op
, dst
, src0
, src1
, ir_to_mesa_undef
);
354 ir_to_mesa_instruction
*
355 ir_to_mesa_visitor::ir_to_mesa_emit_op1(ir_instruction
*ir
,
357 ir_to_mesa_dst_reg dst
,
358 ir_to_mesa_src_reg src0
)
360 assert(dst
.writemask
!= 0);
361 return ir_to_mesa_emit_op3(ir
, op
, dst
,
362 src0
, ir_to_mesa_undef
, ir_to_mesa_undef
);
365 ir_to_mesa_instruction
*
366 ir_to_mesa_visitor::ir_to_mesa_emit_op0(ir_instruction
*ir
,
369 return ir_to_mesa_emit_op3(ir
, op
, ir_to_mesa_undef_dst
,
376 ir_to_mesa_visitor::set_sampler_location(ir_variable
*sampler
, int location
)
378 if (this->sampler_map
== NULL
) {
379 this->sampler_map
= hash_table_ctor(0, hash_table_pointer_hash
,
380 hash_table_pointer_compare
);
383 hash_table_insert(this->sampler_map
, (void *)(uintptr_t)location
, sampler
);
387 ir_to_mesa_visitor::get_sampler_location(ir_variable
*sampler
)
389 void *result
= hash_table_find(this->sampler_map
, sampler
);
391 return (int)(uintptr_t)result
;
394 inline ir_to_mesa_dst_reg
395 ir_to_mesa_dst_reg_from_src(ir_to_mesa_src_reg reg
)
397 ir_to_mesa_dst_reg dst_reg
;
399 dst_reg
.file
= reg
.file
;
400 dst_reg
.index
= reg
.index
;
401 dst_reg
.writemask
= WRITEMASK_XYZW
;
402 dst_reg
.cond_mask
= COND_TR
;
403 dst_reg
.reladdr
= reg
.reladdr
;
408 inline ir_to_mesa_src_reg
409 ir_to_mesa_src_reg_from_dst(ir_to_mesa_dst_reg reg
)
411 return ir_to_mesa_src_reg(reg
.file
, reg
.index
, NULL
);
415 * Emits Mesa scalar opcodes to produce unique answers across channels.
417 * Some Mesa opcodes are scalar-only, like ARB_fp/vp. The src X
418 * channel determines the result across all channels. So to do a vec4
419 * of this operation, we want to emit a scalar per source channel used
420 * to produce dest channels.
423 ir_to_mesa_visitor::ir_to_mesa_emit_scalar_op2(ir_instruction
*ir
,
425 ir_to_mesa_dst_reg dst
,
426 ir_to_mesa_src_reg orig_src0
,
427 ir_to_mesa_src_reg orig_src1
)
430 int done_mask
= ~dst
.writemask
;
432 /* Mesa RCP is a scalar operation splatting results to all channels,
433 * like ARB_fp/vp. So emit as many RCPs as necessary to cover our
436 for (i
= 0; i
< 4; i
++) {
437 GLuint this_mask
= (1 << i
);
438 ir_to_mesa_instruction
*inst
;
439 ir_to_mesa_src_reg src0
= orig_src0
;
440 ir_to_mesa_src_reg src1
= orig_src1
;
442 if (done_mask
& this_mask
)
445 GLuint src0_swiz
= GET_SWZ(src0
.swizzle
, i
);
446 GLuint src1_swiz
= GET_SWZ(src1
.swizzle
, i
);
447 for (j
= i
+ 1; j
< 4; j
++) {
448 if (!(done_mask
& (1 << j
)) &&
449 GET_SWZ(src0
.swizzle
, j
) == src0_swiz
&&
450 GET_SWZ(src1
.swizzle
, j
) == src1_swiz
) {
451 this_mask
|= (1 << j
);
454 src0
.swizzle
= MAKE_SWIZZLE4(src0_swiz
, src0_swiz
,
455 src0_swiz
, src0_swiz
);
456 src1
.swizzle
= MAKE_SWIZZLE4(src1_swiz
, src1_swiz
,
457 src1_swiz
, src1_swiz
);
459 inst
= ir_to_mesa_emit_op2(ir
, op
,
463 inst
->dst_reg
.writemask
= this_mask
;
464 done_mask
|= this_mask
;
469 ir_to_mesa_visitor::ir_to_mesa_emit_scalar_op1(ir_instruction
*ir
,
471 ir_to_mesa_dst_reg dst
,
472 ir_to_mesa_src_reg src0
)
474 ir_to_mesa_src_reg undef
= ir_to_mesa_undef
;
476 undef
.swizzle
= SWIZZLE_XXXX
;
478 ir_to_mesa_emit_scalar_op2(ir
, op
, dst
, src0
, undef
);
481 struct ir_to_mesa_src_reg
482 ir_to_mesa_visitor::src_reg_for_float(float val
)
484 ir_to_mesa_src_reg
src_reg(PROGRAM_CONSTANT
, -1, NULL
);
486 src_reg
.index
= _mesa_add_unnamed_constant(this->prog
->Parameters
,
487 &val
, 1, &src_reg
.swizzle
);
493 type_size(const struct glsl_type
*type
)
498 switch (type
->base_type
) {
501 case GLSL_TYPE_FLOAT
:
503 if (type
->is_matrix()) {
504 return type
->matrix_columns
;
506 /* Regardless of size of vector, it gets a vec4. This is bad
507 * packing for things like floats, but otherwise arrays become a
508 * mess. Hopefully a later pass over the code can pack scalars
509 * down if appropriate.
513 case GLSL_TYPE_ARRAY
:
514 return type_size(type
->fields
.array
) * type
->length
;
515 case GLSL_TYPE_STRUCT
:
517 for (i
= 0; i
< type
->length
; i
++) {
518 size
+= type_size(type
->fields
.structure
[i
].type
);
521 case GLSL_TYPE_SAMPLER
:
522 /* Samplers take up no register space, since they're baked in at
532 * In the initial pass of codegen, we assign temporary numbers to
533 * intermediate results. (not SSA -- variable assignments will reuse
534 * storage). Actual register allocation for the Mesa VM occurs in a
535 * pass over the Mesa IR later.
538 ir_to_mesa_visitor::get_temp(const glsl_type
*type
)
540 ir_to_mesa_src_reg src_reg
;
544 src_reg
.file
= PROGRAM_TEMPORARY
;
545 src_reg
.index
= next_temp
;
546 src_reg
.reladdr
= NULL
;
547 next_temp
+= type_size(type
);
549 if (type
->is_array() || type
->is_record()) {
550 src_reg
.swizzle
= SWIZZLE_NOOP
;
552 for (i
= 0; i
< type
->vector_elements
; i
++)
555 swizzle
[i
] = type
->vector_elements
- 1;
556 src_reg
.swizzle
= MAKE_SWIZZLE4(swizzle
[0], swizzle
[1],
557 swizzle
[2], swizzle
[3]);
565 ir_to_mesa_visitor::find_variable_storage(ir_variable
*var
)
568 variable_storage
*entry
;
570 foreach_iter(exec_list_iterator
, iter
, this->variables
) {
571 entry
= (variable_storage
*)iter
.get();
573 if (entry
->var
== var
)
581 ir_to_mesa_visitor::visit(ir_variable
*ir
)
583 if (strcmp(ir
->name
, "gl_FragCoord") == 0) {
584 struct gl_fragment_program
*fp
= (struct gl_fragment_program
*)this->prog
;
586 fp
->OriginUpperLeft
= ir
->origin_upper_left
;
587 fp
->PixelCenterInteger
= ir
->pixel_center_integer
;
592 ir_to_mesa_visitor::visit(ir_loop
*ir
)
596 assert(!ir
->increment
);
597 assert(!ir
->counter
);
599 ir_to_mesa_emit_op0(NULL
, OPCODE_BGNLOOP
);
600 visit_exec_list(&ir
->body_instructions
, this);
601 ir_to_mesa_emit_op0(NULL
, OPCODE_ENDLOOP
);
605 ir_to_mesa_visitor::visit(ir_loop_jump
*ir
)
608 case ir_loop_jump::jump_break
:
609 ir_to_mesa_emit_op0(NULL
, OPCODE_BRK
);
611 case ir_loop_jump::jump_continue
:
612 ir_to_mesa_emit_op0(NULL
, OPCODE_CONT
);
619 ir_to_mesa_visitor::visit(ir_function_signature
*ir
)
626 ir_to_mesa_visitor::visit(ir_function
*ir
)
628 /* Ignore function bodies other than main() -- we shouldn't see calls to
629 * them since they should all be inlined before we get to ir_to_mesa.
631 if (strcmp(ir
->name
, "main") == 0) {
632 const ir_function_signature
*sig
;
635 sig
= ir
->matching_signature(&empty
);
639 foreach_iter(exec_list_iterator
, iter
, sig
->body
) {
640 ir_instruction
*ir
= (ir_instruction
*)iter
.get();
648 ir_to_mesa_visitor::try_emit_mad(ir_expression
*ir
, int mul_operand
)
650 int nonmul_operand
= 1 - mul_operand
;
651 ir_to_mesa_src_reg a
, b
, c
;
653 ir_expression
*expr
= ir
->operands
[mul_operand
]->as_expression();
654 if (!expr
|| expr
->operation
!= ir_binop_mul
)
657 expr
->operands
[0]->accept(this);
659 expr
->operands
[1]->accept(this);
661 ir
->operands
[nonmul_operand
]->accept(this);
664 this->result
= get_temp(ir
->type
);
665 ir_to_mesa_emit_op3(ir
, OPCODE_MAD
,
666 ir_to_mesa_dst_reg_from_src(this->result
), a
, b
, c
);
672 ir_to_mesa_visitor::reladdr_to_temp(ir_instruction
*ir
,
673 ir_to_mesa_src_reg
*reg
, int *num_reladdr
)
678 ir_to_mesa_emit_op1(ir
, OPCODE_ARL
, ir_to_mesa_address_reg
, *reg
->reladdr
);
680 if (*num_reladdr
!= 1) {
681 ir_to_mesa_src_reg temp
= get_temp(glsl_type::vec4_type
);
683 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
,
684 ir_to_mesa_dst_reg_from_src(temp
), *reg
);
692 ir_to_mesa_visitor::visit(ir_expression
*ir
)
694 unsigned int operand
;
695 struct ir_to_mesa_src_reg op
[2];
696 struct ir_to_mesa_src_reg result_src
;
697 struct ir_to_mesa_dst_reg result_dst
;
698 const glsl_type
*vec4_type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, 4, 1);
699 const glsl_type
*vec3_type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, 3, 1);
700 const glsl_type
*vec2_type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, 2, 1);
702 /* Quick peephole: Emit OPCODE_MAD(a, b, c) instead of ADD(MUL(a, b), c)
704 if (ir
->operation
== ir_binop_add
) {
705 if (try_emit_mad(ir
, 1))
707 if (try_emit_mad(ir
, 0))
711 for (operand
= 0; operand
< ir
->get_num_operands(); operand
++) {
712 this->result
.file
= PROGRAM_UNDEFINED
;
713 ir
->operands
[operand
]->accept(this);
714 if (this->result
.file
== PROGRAM_UNDEFINED
) {
716 printf("Failed to get tree for expression operand:\n");
717 ir
->operands
[operand
]->accept(&v
);
720 op
[operand
] = this->result
;
722 /* Matrix expression operands should have been broken down to vector
723 * operations already.
725 assert(!ir
->operands
[operand
]->type
->is_matrix());
728 this->result
.file
= PROGRAM_UNDEFINED
;
730 /* Storage for our result. Ideally for an assignment we'd be using
731 * the actual storage for the result here, instead.
733 result_src
= get_temp(ir
->type
);
734 /* convenience for the emit functions below. */
735 result_dst
= ir_to_mesa_dst_reg_from_src(result_src
);
736 /* Limit writes to the channels that will be used by result_src later.
737 * This does limit this temp's use as a temporary for multi-instruction
740 result_dst
.writemask
= (1 << ir
->type
->vector_elements
) - 1;
742 switch (ir
->operation
) {
743 case ir_unop_logic_not
:
744 ir_to_mesa_emit_op2(ir
, OPCODE_SEQ
, result_dst
,
745 op
[0], src_reg_for_float(0.0));
748 op
[0].negate
= ~op
[0].negate
;
752 ir_to_mesa_emit_op1(ir
, OPCODE_ABS
, result_dst
, op
[0]);
755 ir_to_mesa_emit_op1(ir
, OPCODE_SSG
, result_dst
, op
[0]);
758 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_RCP
, result_dst
, op
[0]);
762 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_EX2
, result_dst
, op
[0]);
766 assert(!"not reached: should be handled by ir_explog_to_explog2");
769 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_LG2
, result_dst
, op
[0]);
772 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_SIN
, result_dst
, op
[0]);
775 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_COS
, result_dst
, op
[0]);
779 ir_to_mesa_emit_op1(ir
, OPCODE_DDX
, result_dst
, op
[0]);
782 ir_to_mesa_emit_op1(ir
, OPCODE_DDY
, result_dst
, op
[0]);
786 ir_to_mesa_emit_op2(ir
, OPCODE_ADD
, result_dst
, op
[0], op
[1]);
789 ir_to_mesa_emit_op2(ir
, OPCODE_SUB
, result_dst
, op
[0], op
[1]);
793 ir_to_mesa_emit_op2(ir
, OPCODE_MUL
, result_dst
, op
[0], op
[1]);
796 assert(!"not reached: should be handled by ir_div_to_mul_rcp");
798 assert(!"ir_binop_mod should have been converted to b * fract(a/b)");
802 ir_to_mesa_emit_op2(ir
, OPCODE_SLT
, result_dst
, op
[0], op
[1]);
804 case ir_binop_greater
:
805 ir_to_mesa_emit_op2(ir
, OPCODE_SGT
, result_dst
, op
[0], op
[1]);
807 case ir_binop_lequal
:
808 ir_to_mesa_emit_op2(ir
, OPCODE_SLE
, result_dst
, op
[0], op
[1]);
810 case ir_binop_gequal
:
811 ir_to_mesa_emit_op2(ir
, OPCODE_SGE
, result_dst
, op
[0], op
[1]);
814 ir_to_mesa_emit_op2(ir
, OPCODE_SEQ
, result_dst
, op
[0], op
[1]);
816 case ir_binop_logic_xor
:
817 case ir_binop_nequal
:
818 ir_to_mesa_emit_op2(ir
, OPCODE_SNE
, result_dst
, op
[0], op
[1]);
821 case ir_binop_logic_or
:
822 /* This could be a saturated add and skip the SNE. */
823 ir_to_mesa_emit_op2(ir
, OPCODE_ADD
,
827 ir_to_mesa_emit_op2(ir
, OPCODE_SNE
,
829 result_src
, src_reg_for_float(0.0));
832 case ir_binop_logic_and
:
833 /* the bool args are stored as float 0.0 or 1.0, so "mul" gives us "and". */
834 ir_to_mesa_emit_op2(ir
, OPCODE_MUL
,
840 if (ir
->operands
[0]->type
== vec4_type
) {
841 assert(ir
->operands
[1]->type
== vec4_type
);
842 ir_to_mesa_emit_op2(ir
, OPCODE_DP4
,
845 } else if (ir
->operands
[0]->type
== vec3_type
) {
846 assert(ir
->operands
[1]->type
== vec3_type
);
847 ir_to_mesa_emit_op2(ir
, OPCODE_DP3
,
850 } else if (ir
->operands
[0]->type
== vec2_type
) {
851 assert(ir
->operands
[1]->type
== vec2_type
);
852 ir_to_mesa_emit_op2(ir
, OPCODE_DP2
,
859 ir_to_mesa_emit_op2(ir
, OPCODE_XPD
, result_dst
, op
[0], op
[1]);
863 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_RSQ
, result_dst
, op
[0]);
864 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_RCP
, result_dst
, result_src
);
865 /* For incoming channels < 0, set the result to 0. */
866 ir_to_mesa_emit_op3(ir
, OPCODE_CMP
, result_dst
,
867 op
[0], src_reg_for_float(0.0), result_src
);
870 ir_to_mesa_emit_scalar_op1(ir
, OPCODE_RSQ
, result_dst
, op
[0]);
875 /* Mesa IR lacks types, ints are stored as truncated floats. */
879 ir_to_mesa_emit_op1(ir
, OPCODE_TRUNC
, result_dst
, op
[0]);
883 ir_to_mesa_emit_op2(ir
, OPCODE_SNE
, result_dst
,
884 result_src
, src_reg_for_float(0.0));
887 ir_to_mesa_emit_op1(ir
, OPCODE_TRUNC
, result_dst
, op
[0]);
890 op
[0].negate
= ~op
[0].negate
;
891 ir_to_mesa_emit_op1(ir
, OPCODE_FLR
, result_dst
, op
[0]);
892 result_src
.negate
= ~result_src
.negate
;
895 ir_to_mesa_emit_op1(ir
, OPCODE_FLR
, result_dst
, op
[0]);
898 ir_to_mesa_emit_op1(ir
, OPCODE_FRC
, result_dst
, op
[0]);
902 ir_to_mesa_emit_op2(ir
, OPCODE_MIN
, result_dst
, op
[0], op
[1]);
905 ir_to_mesa_emit_op2(ir
, OPCODE_MAX
, result_dst
, op
[0], op
[1]);
908 ir_to_mesa_emit_scalar_op2(ir
, OPCODE_POW
, result_dst
, op
[0], op
[1]);
911 case ir_unop_bit_not
:
913 case ir_binop_lshift
:
914 case ir_binop_rshift
:
915 case ir_binop_bit_and
:
916 case ir_binop_bit_xor
:
917 case ir_binop_bit_or
:
918 assert(!"GLSL 1.30 features unsupported");
922 this->result
= result_src
;
927 ir_to_mesa_visitor::visit(ir_swizzle
*ir
)
929 ir_to_mesa_src_reg src_reg
;
933 /* Note that this is only swizzles in expressions, not those on the left
934 * hand side of an assignment, which do write masking. See ir_assignment
938 ir
->val
->accept(this);
939 src_reg
= this->result
;
940 assert(src_reg
.file
!= PROGRAM_UNDEFINED
);
942 for (i
= 0; i
< 4; i
++) {
943 if (i
< ir
->type
->vector_elements
) {
946 swizzle
[i
] = GET_SWZ(src_reg
.swizzle
, ir
->mask
.x
);
949 swizzle
[i
] = GET_SWZ(src_reg
.swizzle
, ir
->mask
.y
);
952 swizzle
[i
] = GET_SWZ(src_reg
.swizzle
, ir
->mask
.z
);
955 swizzle
[i
] = GET_SWZ(src_reg
.swizzle
, ir
->mask
.w
);
959 /* If the type is smaller than a vec4, replicate the last
962 swizzle
[i
] = swizzle
[ir
->type
->vector_elements
- 1];
966 src_reg
.swizzle
= MAKE_SWIZZLE4(swizzle
[0],
971 this->result
= src_reg
;
974 static const struct {
977 int tokens
[STATE_LENGTH
];
981 {"gl_DepthRange", "near",
982 {STATE_DEPTH_RANGE
, 0, 0}, SWIZZLE_XXXX
},
983 {"gl_DepthRange", "far",
984 {STATE_DEPTH_RANGE
, 0, 0}, SWIZZLE_YYYY
},
985 {"gl_DepthRange", "diff",
986 {STATE_DEPTH_RANGE
, 0, 0}, SWIZZLE_ZZZZ
},
988 {"gl_ClipPlane", NULL
,
989 {STATE_CLIPPLANE
, 0, 0}, SWIZZLE_XYZW
, true}
992 {STATE_POINT_SIZE
}, SWIZZLE_XXXX
},
993 {"gl_Point", "sizeMin",
994 {STATE_POINT_SIZE
}, SWIZZLE_YYYY
},
995 {"gl_Point", "sizeMax",
996 {STATE_POINT_SIZE
}, SWIZZLE_ZZZZ
},
997 {"gl_Point", "fadeThresholdSize",
998 {STATE_POINT_SIZE
}, SWIZZLE_WWWW
},
999 {"gl_Point", "distanceConstantAttenuation",
1000 {STATE_POINT_ATTENUATION
}, SWIZZLE_XXXX
},
1001 {"gl_Point", "distanceLinearAttenuation",
1002 {STATE_POINT_ATTENUATION
}, SWIZZLE_YYYY
},
1003 {"gl_Point", "distanceQuadraticAttenuation",
1004 {STATE_POINT_ATTENUATION
}, SWIZZLE_ZZZZ
},
1006 {"gl_FrontMaterial", "emission",
1007 {STATE_MATERIAL
, 0, STATE_EMISSION
}, SWIZZLE_XYZW
},
1008 {"gl_FrontMaterial", "ambient",
1009 {STATE_MATERIAL
, 0, STATE_AMBIENT
}, SWIZZLE_XYZW
},
1010 {"gl_FrontMaterial", "diffuse",
1011 {STATE_MATERIAL
, 0, STATE_DIFFUSE
}, SWIZZLE_XYZW
},
1012 {"gl_FrontMaterial", "specular",
1013 {STATE_MATERIAL
, 0, STATE_SPECULAR
}, SWIZZLE_XYZW
},
1014 {"gl_FrontMaterial", "shininess",
1015 {STATE_MATERIAL
, 0, STATE_SHININESS
}, SWIZZLE_XXXX
},
1017 {"gl_BackMaterial", "emission",
1018 {STATE_MATERIAL
, 1, STATE_EMISSION
}, SWIZZLE_XYZW
},
1019 {"gl_BackMaterial", "ambient",
1020 {STATE_MATERIAL
, 1, STATE_AMBIENT
}, SWIZZLE_XYZW
},
1021 {"gl_BackMaterial", "diffuse",
1022 {STATE_MATERIAL
, 1, STATE_DIFFUSE
}, SWIZZLE_XYZW
},
1023 {"gl_BackMaterial", "specular",
1024 {STATE_MATERIAL
, 1, STATE_SPECULAR
}, SWIZZLE_XYZW
},
1025 {"gl_BackMaterial", "shininess",
1026 {STATE_MATERIAL
, 1, STATE_SHININESS
}, SWIZZLE_XXXX
},
1028 {"gl_LightSource", "ambient",
1029 {STATE_LIGHT
, 0, STATE_AMBIENT
}, SWIZZLE_XYZW
, true},
1030 {"gl_LightSource", "diffuse",
1031 {STATE_LIGHT
, 0, STATE_DIFFUSE
}, SWIZZLE_XYZW
, true},
1032 {"gl_LightSource", "specular",
1033 {STATE_LIGHT
, 0, STATE_SPECULAR
}, SWIZZLE_XYZW
, true},
1034 {"gl_LightSource", "position",
1035 {STATE_LIGHT
, 0, STATE_POSITION
}, SWIZZLE_XYZW
, true},
1036 {"gl_LightSource", "halfVector",
1037 {STATE_LIGHT
, 0, STATE_HALF_VECTOR
}, SWIZZLE_XYZW
, true},
1038 {"gl_LightSource", "spotDirection",
1039 {STATE_LIGHT
, 0, STATE_SPOT_DIRECTION
}, SWIZZLE_XYZW
, true},
1040 {"gl_LightSource", "spotCosCutoff",
1041 {STATE_LIGHT
, 0, STATE_SPOT_DIRECTION
}, SWIZZLE_WWWW
, true},
1042 {"gl_LightSource", "spotCutoff",
1043 {STATE_LIGHT
, 0, STATE_SPOT_CUTOFF
}, SWIZZLE_XXXX
, true},
1044 {"gl_LightSource", "spotExponent",
1045 {STATE_LIGHT
, 0, STATE_ATTENUATION
}, SWIZZLE_WWWW
, true},
1046 {"gl_LightSource", "constantAttenuation",
1047 {STATE_LIGHT
, 0, STATE_ATTENUATION
}, SWIZZLE_XXXX
, true},
1048 {"gl_LightSource", "linearAttenuation",
1049 {STATE_LIGHT
, 0, STATE_ATTENUATION
}, SWIZZLE_YYYY
, true},
1050 {"gl_LightSource", "quadraticAttenuation",
1051 {STATE_LIGHT
, 0, STATE_ATTENUATION
}, SWIZZLE_ZZZZ
, true},
1053 {"gl_LightModel", NULL
,
1054 {STATE_LIGHTMODEL_AMBIENT
, 0}, SWIZZLE_XYZW
},
1056 {"gl_FrontLightModelProduct", NULL
,
1057 {STATE_LIGHTMODEL_SCENECOLOR
, 0}, SWIZZLE_XYZW
},
1058 {"gl_BackLightModelProduct", NULL
,
1059 {STATE_LIGHTMODEL_SCENECOLOR
, 1}, SWIZZLE_XYZW
},
1061 {"gl_FrontLightProduct", "ambient",
1062 {STATE_LIGHTPROD
, 0, 0, STATE_AMBIENT
}, SWIZZLE_XYZW
, true},
1063 {"gl_FrontLightProduct", "diffuse",
1064 {STATE_LIGHTPROD
, 0, 0, STATE_DIFFUSE
}, SWIZZLE_XYZW
, true},
1065 {"gl_FrontLightProduct", "specular",
1066 {STATE_LIGHTPROD
, 0, 0, STATE_SPECULAR
}, SWIZZLE_XYZW
, true},
1068 {"gl_BackLightProduct", "ambient",
1069 {STATE_LIGHTPROD
, 0, 1, STATE_AMBIENT
}, SWIZZLE_XYZW
, true},
1070 {"gl_BackLightProduct", "diffuse",
1071 {STATE_LIGHTPROD
, 0, 1, STATE_DIFFUSE
}, SWIZZLE_XYZW
, true},
1072 {"gl_BackLightProduct", "specular",
1073 {STATE_LIGHTPROD
, 0, 1, STATE_SPECULAR
}, SWIZZLE_XYZW
, true},
1075 {"gl_TextureEnvColor", "ambient",
1076 {STATE_TEXENV_COLOR
, 0}, SWIZZLE_XYZW
, true},
1078 {"gl_EyePlaneS", NULL
,
1079 {STATE_TEXGEN
, 0, STATE_TEXGEN_EYE_S
}, SWIZZLE_XYZW
, true},
1080 {"gl_EyePlaneT", NULL
,
1081 {STATE_TEXGEN
, 0, STATE_TEXGEN_EYE_T
}, SWIZZLE_XYZW
, true},
1082 {"gl_EyePlaneR", NULL
,
1083 {STATE_TEXGEN
, 0, STATE_TEXGEN_EYE_R
}, SWIZZLE_XYZW
, true},
1084 {"gl_EyePlaneQ", NULL
,
1085 {STATE_TEXGEN
, 0, STATE_TEXGEN_EYE_Q
}, SWIZZLE_XYZW
, true},
1087 {"gl_ObjectPlaneS", NULL
,
1088 {STATE_TEXGEN
, 0, STATE_TEXGEN_OBJECT_S
}, SWIZZLE_XYZW
, true},
1089 {"gl_ObjectPlaneT", NULL
,
1090 {STATE_TEXGEN
, 0, STATE_TEXGEN_OBJECT_T
}, SWIZZLE_XYZW
, true},
1091 {"gl_ObjectPlaneR", NULL
,
1092 {STATE_TEXGEN
, 0, STATE_TEXGEN_OBJECT_R
}, SWIZZLE_XYZW
, true},
1093 {"gl_ObjectPlaneQ", NULL
,
1094 {STATE_TEXGEN
, 0, STATE_TEXGEN_OBJECT_Q
}, SWIZZLE_XYZW
, true},
1097 {STATE_FOG_COLOR
}, SWIZZLE_XYZW
},
1098 {"gl_Fog", "density",
1099 {STATE_FOG_PARAMS
}, SWIZZLE_XXXX
},
1101 {STATE_FOG_PARAMS
}, SWIZZLE_YYYY
},
1103 {STATE_FOG_PARAMS
}, SWIZZLE_ZZZZ
},
1105 {STATE_FOG_PARAMS
}, SWIZZLE_WWWW
},
1108 static ir_to_mesa_src_reg
1109 get_builtin_uniform_reg(struct gl_program
*prog
,
1110 const char *name
, int array_index
, const char *field
)
1113 ir_to_mesa_src_reg src_reg
;
1114 int tokens
[STATE_LENGTH
];
1116 for (i
= 0; i
< Elements(statevars
); i
++) {
1117 if (strcmp(statevars
[i
].name
, name
) != 0)
1119 if (!field
&& statevars
[i
].field
) {
1120 assert(!"FINISHME: whole-structure state var dereference");
1122 if (field
&& strcmp(statevars
[i
].field
, field
) != 0)
1127 if (i
== Elements(statevars
)) {
1128 printf("builtin uniform %s%s%s not found\n",
1131 field
? field
: "");
1135 memcpy(&tokens
, statevars
[i
].tokens
, sizeof(tokens
));
1136 if (statevars
[i
].array_indexed
)
1137 tokens
[1] = array_index
;
1139 src_reg
.file
= PROGRAM_STATE_VAR
;
1140 src_reg
.index
= _mesa_add_state_reference(prog
->Parameters
,
1141 (gl_state_index
*)tokens
);
1142 src_reg
.swizzle
= statevars
[i
].swizzle
;
1144 src_reg
.reladdr
= false;
1150 add_matrix_ref(struct gl_program
*prog
, int *tokens
)
1155 /* Add a ref for each column. It looks like the reason we do
1156 * it this way is that _mesa_add_state_reference doesn't work
1157 * for things that aren't vec4s, so the tokens[2]/tokens[3]
1158 * range has to be equal.
1160 for (i
= 0; i
< 4; i
++) {
1163 int pos
= _mesa_add_state_reference(prog
->Parameters
,
1164 (gl_state_index
*)tokens
);
1168 assert(base_pos
+ i
== pos
);
1174 static variable_storage
*
1175 get_builtin_matrix_ref(void *mem_ctx
, struct gl_program
*prog
, ir_variable
*var
,
1176 ir_rvalue
*array_index
)
1179 * NOTE: The ARB_vertex_program extension specified that matrices get
1180 * loaded in registers in row-major order. With GLSL, we want column-
1181 * major order. So, we need to transpose all matrices here...
1183 static const struct {
1188 { "gl_ModelViewMatrix", STATE_MODELVIEW_MATRIX
, STATE_MATRIX_TRANSPOSE
},
1189 { "gl_ModelViewMatrixInverse", STATE_MODELVIEW_MATRIX
, STATE_MATRIX_INVTRANS
},
1190 { "gl_ModelViewMatrixTranspose", STATE_MODELVIEW_MATRIX
, 0 },
1191 { "gl_ModelViewMatrixInverseTranspose", STATE_MODELVIEW_MATRIX
, STATE_MATRIX_INVERSE
},
1193 { "gl_ProjectionMatrix", STATE_PROJECTION_MATRIX
, STATE_MATRIX_TRANSPOSE
},
1194 { "gl_ProjectionMatrixInverse", STATE_PROJECTION_MATRIX
, STATE_MATRIX_INVTRANS
},
1195 { "gl_ProjectionMatrixTranspose", STATE_PROJECTION_MATRIX
, 0 },
1196 { "gl_ProjectionMatrixInverseTranspose", STATE_PROJECTION_MATRIX
, STATE_MATRIX_INVERSE
},
1198 { "gl_ModelViewProjectionMatrix", STATE_MVP_MATRIX
, STATE_MATRIX_TRANSPOSE
},
1199 { "gl_ModelViewProjectionMatrixInverse", STATE_MVP_MATRIX
, STATE_MATRIX_INVTRANS
},
1200 { "gl_ModelViewProjectionMatrixTranspose", STATE_MVP_MATRIX
, 0 },
1201 { "gl_ModelViewProjectionMatrixInverseTranspose", STATE_MVP_MATRIX
, STATE_MATRIX_INVERSE
},
1203 { "gl_TextureMatrix", STATE_TEXTURE_MATRIX
, STATE_MATRIX_TRANSPOSE
},
1204 { "gl_TextureMatrixInverse", STATE_TEXTURE_MATRIX
, STATE_MATRIX_INVTRANS
},
1205 { "gl_TextureMatrixTranspose", STATE_TEXTURE_MATRIX
, 0 },
1206 { "gl_TextureMatrixInverseTranspose", STATE_TEXTURE_MATRIX
, STATE_MATRIX_INVERSE
},
1208 { "gl_NormalMatrix", STATE_MODELVIEW_MATRIX
, STATE_MATRIX_INVERSE
},
1212 variable_storage
*entry
;
1214 /* C++ gets angry when we try to use an int as a gl_state_index, so we use
1215 * ints for gl_state_index. Make sure they're compatible.
1217 assert(sizeof(gl_state_index
) == sizeof(int));
1219 for (i
= 0; i
< Elements(matrices
); i
++) {
1220 if (strcmp(var
->name
, matrices
[i
].name
) == 0) {
1221 int tokens
[STATE_LENGTH
];
1224 tokens
[0] = matrices
[i
].matrix
;
1225 tokens
[4] = matrices
[i
].modifier
;
1226 if (matrices
[i
].matrix
== STATE_TEXTURE_MATRIX
) {
1227 ir_constant
*index
= array_index
->constant_expression_value();
1229 tokens
[1] = index
->value
.i
[0];
1230 base_pos
= add_matrix_ref(prog
, tokens
);
1232 for (i
= 0; i
< var
->type
->length
; i
++) {
1234 int pos
= add_matrix_ref(prog
, tokens
);
1238 assert(base_pos
+ (int)i
* 4 == pos
);
1242 tokens
[1] = 0; /* unused array index */
1243 base_pos
= add_matrix_ref(prog
, tokens
);
1245 tokens
[4] = matrices
[i
].modifier
;
1247 entry
= new(mem_ctx
) variable_storage(var
,
1259 ir_to_mesa_visitor::add_uniform(const char *name
,
1260 const glsl_type
*type
,
1261 ir_constant
*constant
)
1265 if (type
->is_vector() ||
1266 type
->is_scalar()) {
1267 len
= type
->vector_elements
;
1269 len
= type_size(type
) * 4;
1272 float *values
= NULL
;
1273 if (constant
&& type
->is_array()) {
1274 values
= (float *)malloc(type
->length
* 4 * sizeof(float));
1276 assert(type
->fields
.array
->is_scalar() ||
1277 type
->fields
.array
->is_vector() ||
1278 !"FINISHME: uniform array initializers for non-vector");
1280 for (unsigned int i
= 0; i
< type
->length
; i
++) {
1281 ir_constant
*element
= constant
->array_elements
[i
];
1284 for (c
= 0; c
< type
->fields
.array
->vector_elements
; c
++) {
1285 switch (type
->fields
.array
->base_type
) {
1286 case GLSL_TYPE_FLOAT
:
1287 values
[4 * i
+ c
] = element
->value
.f
[c
];
1290 values
[4 * i
+ c
] = element
->value
.i
[c
];
1292 case GLSL_TYPE_UINT
:
1293 values
[4 * i
+ c
] = element
->value
.u
[c
];
1295 case GLSL_TYPE_BOOL
:
1296 values
[4 * i
+ c
] = element
->value
.b
[c
];
1299 assert(!"not reached");
1303 } else if (constant
) {
1304 values
= (float *)malloc(16 * sizeof(float));
1305 for (unsigned int i
= 0; i
< type
->components(); i
++) {
1306 switch (type
->base_type
) {
1307 case GLSL_TYPE_FLOAT
:
1308 values
[i
] = constant
->value
.f
[i
];
1311 values
[i
] = constant
->value
.i
[i
];
1313 case GLSL_TYPE_UINT
:
1314 values
[i
] = constant
->value
.u
[i
];
1316 case GLSL_TYPE_BOOL
:
1317 values
[i
] = constant
->value
.b
[i
];
1320 assert(!"not reached");
1325 int loc
= _mesa_add_uniform(this->prog
->Parameters
,
1335 /* Recursively add all the members of the aggregate uniform as uniform names
1336 * to Mesa, moving those uniforms to our structured temporary.
1339 ir_to_mesa_visitor::add_aggregate_uniform(ir_instruction
*ir
,
1341 const struct glsl_type
*type
,
1342 ir_constant
*constant
,
1343 struct ir_to_mesa_dst_reg temp
)
1347 if (type
->is_record()) {
1348 void *mem_ctx
= talloc_new(NULL
);
1349 ir_constant
*field_constant
= NULL
;
1352 field_constant
= (ir_constant
*)constant
->components
.get_head();
1354 for (unsigned int i
= 0; i
< type
->length
; i
++) {
1355 const glsl_type
*field_type
= type
->fields
.structure
[i
].type
;
1357 add_aggregate_uniform(ir
,
1358 talloc_asprintf(mem_ctx
, "%s.%s", name
,
1359 type
->fields
.structure
[i
].name
),
1360 field_type
, field_constant
, temp
);
1361 temp
.index
+= type_size(field_type
);
1364 field_constant
= (ir_constant
*)field_constant
->next
;
1367 talloc_free(mem_ctx
);
1372 assert(type
->is_vector() || type
->is_scalar() || !"FINISHME: other types");
1374 loc
= add_uniform(name
, type
, constant
);
1376 ir_to_mesa_src_reg
uniform(PROGRAM_UNIFORM
, loc
, type
);
1378 for (int i
= 0; i
< type_size(type
); i
++) {
1379 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, temp
, uniform
);
1387 ir_to_mesa_visitor::visit(ir_dereference_variable
*ir
)
1389 variable_storage
*entry
= find_variable_storage(ir
->var
);
1393 switch (ir
->var
->mode
) {
1394 case ir_var_uniform
:
1395 entry
= get_builtin_matrix_ref(this->mem_ctx
, this->prog
, ir
->var
,
1400 /* FINISHME: Fix up uniform name for arrays and things */
1401 if (ir
->var
->type
->base_type
== GLSL_TYPE_SAMPLER
||
1402 (ir
->var
->type
->base_type
== GLSL_TYPE_ARRAY
&&
1403 ir
->var
->type
->fields
.array
->base_type
== GLSL_TYPE_SAMPLER
)) {
1406 if (ir
->var
->type
->base_type
== GLSL_TYPE_ARRAY
)
1407 array_length
= ir
->var
->type
->length
;
1410 int sampler
= _mesa_add_sampler(this->prog
->Parameters
,
1412 ir
->var
->type
->gl_type
,
1414 set_sampler_location(ir
->var
, sampler
);
1416 entry
= new(mem_ctx
) variable_storage(ir
->var
, PROGRAM_SAMPLER
,
1418 this->variables
.push_tail(entry
);
1422 assert(ir
->var
->type
->gl_type
!= 0 &&
1423 ir
->var
->type
->gl_type
!= GL_INVALID_ENUM
);
1425 /* Oh, the joy of aggregate types in Mesa. Like constants,
1426 * we can only really do vec4s. So, make a temp, chop the
1427 * aggregate up into vec4s, and move those vec4s to the temp.
1429 if (ir
->var
->type
->is_record()) {
1430 ir_to_mesa_src_reg temp
= get_temp(ir
->var
->type
);
1432 entry
= new(mem_ctx
) variable_storage(ir
->var
,
1435 this->variables
.push_tail(entry
);
1437 add_aggregate_uniform(ir
->var
, ir
->var
->name
, ir
->var
->type
,
1438 ir
->var
->constant_value
,
1439 ir_to_mesa_dst_reg_from_src(temp
));
1443 loc
= add_uniform(ir
->var
->name
,
1445 ir
->var
->constant_value
);
1447 /* Always mark the uniform used at this point. If it isn't
1448 * used, dead code elimination should have nuked the decl already.
1450 this->prog
->Parameters
->Parameters
[loc
].Used
= GL_TRUE
;
1452 entry
= new(mem_ctx
) variable_storage(ir
->var
, PROGRAM_UNIFORM
, loc
);
1453 this->variables
.push_tail(entry
);
1458 /* The linker assigns locations for varyings and attributes,
1459 * including deprecated builtins (like gl_Color), user-assign
1460 * generic attributes (glBindVertexLocation), and
1461 * user-defined varyings.
1463 * FINISHME: We would hit this path for function arguments. Fix!
1465 assert(ir
->var
->location
!= -1);
1466 if (ir
->var
->mode
== ir_var_in
||
1467 ir
->var
->mode
== ir_var_inout
) {
1468 entry
= new(mem_ctx
) variable_storage(ir
->var
,
1472 if (this->prog
->Target
== GL_VERTEX_PROGRAM_ARB
&&
1473 ir
->var
->location
>= VERT_ATTRIB_GENERIC0
) {
1474 _mesa_add_attribute(prog
->Attributes
,
1476 _mesa_sizeof_glsl_type(ir
->var
->type
->gl_type
),
1477 ir
->var
->type
->gl_type
,
1478 ir
->var
->location
- VERT_ATTRIB_GENERIC0
);
1481 entry
= new(mem_ctx
) variable_storage(ir
->var
,
1488 case ir_var_temporary
:
1489 entry
= new(mem_ctx
) variable_storage(ir
->var
, PROGRAM_TEMPORARY
,
1491 this->variables
.push_tail(entry
);
1493 next_temp
+= type_size(ir
->var
->type
);
1498 printf("Failed to make storage for %s\n", ir
->var
->name
);
1503 this->result
= ir_to_mesa_src_reg(entry
->file
, entry
->index
, ir
->var
->type
);
1507 ir_to_mesa_visitor::visit(ir_dereference_array
*ir
)
1509 ir_variable
*var
= ir
->variable_referenced();
1511 ir_to_mesa_src_reg src_reg
;
1512 ir_dereference_variable
*deref_var
= ir
->array
->as_dereference_variable();
1513 int element_size
= type_size(ir
->type
);
1515 index
= ir
->array_index
->constant_expression_value();
1517 if (deref_var
&& strncmp(deref_var
->var
->name
,
1519 strlen("gl_TextureMatrix")) == 0) {
1520 struct variable_storage
*entry
;
1522 entry
= get_builtin_matrix_ref(this->mem_ctx
, this->prog
, deref_var
->var
,
1526 ir_to_mesa_src_reg
src_reg(entry
->file
, entry
->index
, ir
->type
);
1529 src_reg
.reladdr
= NULL
;
1531 ir_to_mesa_src_reg index_reg
= get_temp(glsl_type::float_type
);
1533 ir
->array_index
->accept(this);
1534 ir_to_mesa_emit_op2(ir
, OPCODE_MUL
,
1535 ir_to_mesa_dst_reg_from_src(index_reg
),
1536 this->result
, src_reg_for_float(element_size
));
1538 src_reg
.reladdr
= talloc(mem_ctx
, ir_to_mesa_src_reg
);
1539 memcpy(src_reg
.reladdr
, &index_reg
, sizeof(index_reg
));
1542 this->result
= src_reg
;
1546 if (strncmp(var
->name
, "gl_", 3) == 0 && var
->mode
== ir_var_uniform
&&
1547 !var
->type
->is_matrix()) {
1548 ir_dereference_record
*record
= NULL
;
1549 if (ir
->array
->ir_type
== ir_type_dereference_record
)
1550 record
= (ir_dereference_record
*)ir
->array
;
1552 assert(index
|| !"FINISHME: variable-indexed builtin uniform access");
1554 this->result
= get_builtin_uniform_reg(prog
,
1557 record
? record
->field
: NULL
);
1560 ir
->array
->accept(this);
1561 src_reg
= this->result
;
1564 src_reg
.index
+= index
->value
.i
[0] * element_size
;
1566 ir_to_mesa_src_reg array_base
= this->result
;
1567 /* Variable index array dereference. It eats the "vec4" of the
1568 * base of the array and an index that offsets the Mesa register
1571 ir
->array_index
->accept(this);
1573 ir_to_mesa_src_reg index_reg
;
1575 if (element_size
== 1) {
1576 index_reg
= this->result
;
1578 index_reg
= get_temp(glsl_type::float_type
);
1580 ir_to_mesa_emit_op2(ir
, OPCODE_MUL
,
1581 ir_to_mesa_dst_reg_from_src(index_reg
),
1582 this->result
, src_reg_for_float(element_size
));
1585 src_reg
.reladdr
= talloc(mem_ctx
, ir_to_mesa_src_reg
);
1586 memcpy(src_reg
.reladdr
, &index_reg
, sizeof(index_reg
));
1589 /* If the type is smaller than a vec4, replicate the last channel out. */
1590 if (ir
->type
->is_scalar() || ir
->type
->is_vector())
1591 src_reg
.swizzle
= swizzle_for_size(ir
->type
->vector_elements
);
1593 src_reg
.swizzle
= SWIZZLE_NOOP
;
1595 this->result
= src_reg
;
1599 ir_to_mesa_visitor::visit(ir_dereference_record
*ir
)
1602 const glsl_type
*struct_type
= ir
->record
->type
;
1604 ir_variable
*var
= ir
->record
->variable_referenced();
1606 if (strncmp(var
->name
, "gl_", 3) == 0 && var
->mode
== ir_var_uniform
) {
1609 this->result
= get_builtin_uniform_reg(prog
,
1616 ir
->record
->accept(this);
1618 for (i
= 0; i
< struct_type
->length
; i
++) {
1619 if (strcmp(struct_type
->fields
.structure
[i
].name
, ir
->field
) == 0)
1621 offset
+= type_size(struct_type
->fields
.structure
[i
].type
);
1623 this->result
.swizzle
= swizzle_for_size(ir
->type
->vector_elements
);
1624 this->result
.index
+= offset
;
1628 * We want to be careful in assignment setup to hit the actual storage
1629 * instead of potentially using a temporary like we might with the
1630 * ir_dereference handler.
1632 static struct ir_to_mesa_dst_reg
1633 get_assignment_lhs(ir_dereference
*ir
, ir_to_mesa_visitor
*v
,
1634 ir_to_mesa_src_reg
*r
)
1636 /* The LHS must be a dereference. If the LHS is a variable indexed array
1637 * access of a vector, it must be separated into a series conditional moves
1638 * before reaching this point (see ir_vec_index_to_cond_assign).
1640 assert(ir
->as_dereference());
1641 ir_dereference_array
*deref_array
= ir
->as_dereference_array();
1643 assert(!deref_array
->array
->type
->is_vector());
1646 /* Use the rvalue deref handler for the most part. We'll ignore
1647 * swizzles in it and write swizzles using writemask, though.
1650 return ir_to_mesa_dst_reg_from_src(v
->result
);
1654 ir_to_mesa_visitor::visit(ir_assignment
*ir
)
1656 struct ir_to_mesa_dst_reg l
;
1657 struct ir_to_mesa_src_reg r
;
1660 ir
->rhs
->accept(this);
1663 l
= get_assignment_lhs(ir
->lhs
, this, &r
);
1665 /* FINISHME: This should really set to the correct maximal writemask for each
1666 * FINISHME: component written (in the loops below). This case can only
1667 * FINISHME: occur for matrices, arrays, and structures.
1669 if (ir
->write_mask
== 0) {
1670 assert(!ir
->lhs
->type
->is_scalar() && !ir
->lhs
->type
->is_vector());
1671 l
.writemask
= WRITEMASK_XYZW
;
1672 } else if (ir
->lhs
->type
->is_scalar()) {
1673 /* FINISHME: This hack makes writing to gl_FragData, which lives in the
1674 * FINISHME: W component of fragment shader output zero, work correctly.
1676 l
.writemask
= WRITEMASK_XYZW
;
1678 assert(ir
->lhs
->type
->is_vector());
1679 l
.writemask
= ir
->write_mask
;
1682 assert(l
.file
!= PROGRAM_UNDEFINED
);
1683 assert(r
.file
!= PROGRAM_UNDEFINED
);
1685 if (ir
->condition
) {
1686 ir_to_mesa_src_reg condition
;
1688 ir
->condition
->accept(this);
1689 condition
= this->result
;
1691 /* We use the OPCODE_CMP (a < 0 ? b : c) for conditional moves,
1692 * and the condition we produced is 0.0 or 1.0. By flipping the
1693 * sign, we can choose which value OPCODE_CMP produces without
1694 * an extra computing the condition.
1696 condition
.negate
= ~condition
.negate
;
1697 for (i
= 0; i
< type_size(ir
->lhs
->type
); i
++) {
1698 ir_to_mesa_emit_op3(ir
, OPCODE_CMP
, l
,
1699 condition
, r
, ir_to_mesa_src_reg_from_dst(l
));
1704 for (i
= 0; i
< type_size(ir
->lhs
->type
); i
++) {
1705 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, l
, r
);
1714 ir_to_mesa_visitor::visit(ir_constant
*ir
)
1716 ir_to_mesa_src_reg src_reg
;
1717 GLfloat stack_vals
[4];
1718 GLfloat
*values
= stack_vals
;
1721 /* Unfortunately, 4 floats is all we can get into
1722 * _mesa_add_unnamed_constant. So, make a temp to store an
1723 * aggregate constant and move each constant value into it. If we
1724 * get lucky, copy propagation will eliminate the extra moves.
1727 if (ir
->type
->base_type
== GLSL_TYPE_STRUCT
) {
1728 ir_to_mesa_src_reg temp_base
= get_temp(ir
->type
);
1729 ir_to_mesa_dst_reg temp
= ir_to_mesa_dst_reg_from_src(temp_base
);
1731 foreach_iter(exec_list_iterator
, iter
, ir
->components
) {
1732 ir_constant
*field_value
= (ir_constant
*)iter
.get();
1733 int size
= type_size(field_value
->type
);
1737 field_value
->accept(this);
1738 src_reg
= this->result
;
1740 for (i
= 0; i
< (unsigned int)size
; i
++) {
1741 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, temp
, src_reg
);
1747 this->result
= temp_base
;
1751 if (ir
->type
->is_array()) {
1752 ir_to_mesa_src_reg temp_base
= get_temp(ir
->type
);
1753 ir_to_mesa_dst_reg temp
= ir_to_mesa_dst_reg_from_src(temp_base
);
1754 int size
= type_size(ir
->type
->fields
.array
);
1758 for (i
= 0; i
< ir
->type
->length
; i
++) {
1759 ir
->array_elements
[i
]->accept(this);
1760 src_reg
= this->result
;
1761 for (int j
= 0; j
< size
; j
++) {
1762 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, temp
, src_reg
);
1768 this->result
= temp_base
;
1772 if (ir
->type
->is_matrix()) {
1773 ir_to_mesa_src_reg mat
= get_temp(ir
->type
);
1774 ir_to_mesa_dst_reg mat_column
= ir_to_mesa_dst_reg_from_src(mat
);
1776 for (i
= 0; i
< ir
->type
->matrix_columns
; i
++) {
1777 assert(ir
->type
->base_type
== GLSL_TYPE_FLOAT
);
1778 values
= &ir
->value
.f
[i
* ir
->type
->vector_elements
];
1780 src_reg
= ir_to_mesa_src_reg(PROGRAM_CONSTANT
, -1, NULL
);
1781 src_reg
.index
= _mesa_add_unnamed_constant(this->prog
->Parameters
,
1783 ir
->type
->vector_elements
,
1785 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, mat_column
, src_reg
);
1793 src_reg
.file
= PROGRAM_CONSTANT
;
1794 switch (ir
->type
->base_type
) {
1795 case GLSL_TYPE_FLOAT
:
1796 values
= &ir
->value
.f
[0];
1798 case GLSL_TYPE_UINT
:
1799 for (i
= 0; i
< ir
->type
->vector_elements
; i
++) {
1800 values
[i
] = ir
->value
.u
[i
];
1804 for (i
= 0; i
< ir
->type
->vector_elements
; i
++) {
1805 values
[i
] = ir
->value
.i
[i
];
1808 case GLSL_TYPE_BOOL
:
1809 for (i
= 0; i
< ir
->type
->vector_elements
; i
++) {
1810 values
[i
] = ir
->value
.b
[i
];
1814 assert(!"Non-float/uint/int/bool constant");
1817 this->result
= ir_to_mesa_src_reg(PROGRAM_CONSTANT
, -1, ir
->type
);
1818 this->result
.index
= _mesa_add_unnamed_constant(this->prog
->Parameters
,
1820 ir
->type
->vector_elements
,
1821 &this->result
.swizzle
);
1825 ir_to_mesa_visitor::get_function_signature(ir_function_signature
*sig
)
1827 function_entry
*entry
;
1829 foreach_iter(exec_list_iterator
, iter
, this->function_signatures
) {
1830 entry
= (function_entry
*)iter
.get();
1832 if (entry
->sig
== sig
)
1836 entry
= talloc(mem_ctx
, function_entry
);
1838 entry
->sig_id
= this->next_signature_id
++;
1839 entry
->bgn_inst
= NULL
;
1841 /* Allocate storage for all the parameters. */
1842 foreach_iter(exec_list_iterator
, iter
, sig
->parameters
) {
1843 ir_variable
*param
= (ir_variable
*)iter
.get();
1844 variable_storage
*storage
;
1846 storage
= find_variable_storage(param
);
1849 storage
= new(mem_ctx
) variable_storage(param
, PROGRAM_TEMPORARY
,
1851 this->variables
.push_tail(storage
);
1853 this->next_temp
+= type_size(param
->type
);
1856 if (!sig
->return_type
->is_void()) {
1857 entry
->return_reg
= get_temp(sig
->return_type
);
1859 entry
->return_reg
= ir_to_mesa_undef
;
1862 this->function_signatures
.push_tail(entry
);
1867 ir_to_mesa_visitor::visit(ir_call
*ir
)
1869 ir_to_mesa_instruction
*call_inst
;
1870 ir_function_signature
*sig
= ir
->get_callee();
1871 function_entry
*entry
= get_function_signature(sig
);
1874 /* Process in parameters. */
1875 exec_list_iterator sig_iter
= sig
->parameters
.iterator();
1876 foreach_iter(exec_list_iterator
, iter
, *ir
) {
1877 ir_rvalue
*param_rval
= (ir_rvalue
*)iter
.get();
1878 ir_variable
*param
= (ir_variable
*)sig_iter
.get();
1880 if (param
->mode
== ir_var_in
||
1881 param
->mode
== ir_var_inout
) {
1882 variable_storage
*storage
= find_variable_storage(param
);
1885 param_rval
->accept(this);
1886 ir_to_mesa_src_reg r
= this->result
;
1888 ir_to_mesa_dst_reg l
;
1889 l
.file
= storage
->file
;
1890 l
.index
= storage
->index
;
1892 l
.writemask
= WRITEMASK_XYZW
;
1893 l
.cond_mask
= COND_TR
;
1895 for (i
= 0; i
< type_size(param
->type
); i
++) {
1896 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, l
, r
);
1904 assert(!sig_iter
.has_next());
1906 /* Emit call instruction */
1907 call_inst
= ir_to_mesa_emit_op1(ir
, OPCODE_CAL
,
1908 ir_to_mesa_undef_dst
, ir_to_mesa_undef
);
1909 call_inst
->function
= entry
;
1911 /* Process out parameters. */
1912 sig_iter
= sig
->parameters
.iterator();
1913 foreach_iter(exec_list_iterator
, iter
, *ir
) {
1914 ir_rvalue
*param_rval
= (ir_rvalue
*)iter
.get();
1915 ir_variable
*param
= (ir_variable
*)sig_iter
.get();
1917 if (param
->mode
== ir_var_out
||
1918 param
->mode
== ir_var_inout
) {
1919 variable_storage
*storage
= find_variable_storage(param
);
1922 ir_to_mesa_src_reg r
;
1923 r
.file
= storage
->file
;
1924 r
.index
= storage
->index
;
1926 r
.swizzle
= SWIZZLE_NOOP
;
1929 param_rval
->accept(this);
1930 ir_to_mesa_dst_reg l
= ir_to_mesa_dst_reg_from_src(this->result
);
1932 for (i
= 0; i
< type_size(param
->type
); i
++) {
1933 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, l
, r
);
1941 assert(!sig_iter
.has_next());
1943 /* Process return value. */
1944 this->result
= entry
->return_reg
;
1949 ir_to_mesa_visitor::visit(ir_texture
*ir
)
1951 ir_to_mesa_src_reg result_src
, coord
, lod_info
, projector
;
1952 ir_to_mesa_dst_reg result_dst
, coord_dst
;
1953 ir_to_mesa_instruction
*inst
= NULL
;
1954 prog_opcode opcode
= OPCODE_NOP
;
1956 ir
->coordinate
->accept(this);
1958 /* Put our coords in a temp. We'll need to modify them for shadow,
1959 * projection, or LOD, so the only case we'd use it as is is if
1960 * we're doing plain old texturing. Mesa IR optimization should
1961 * handle cleaning up our mess in that case.
1963 coord
= get_temp(glsl_type::vec4_type
);
1964 coord_dst
= ir_to_mesa_dst_reg_from_src(coord
);
1965 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, coord_dst
,
1968 if (ir
->projector
) {
1969 ir
->projector
->accept(this);
1970 projector
= this->result
;
1973 /* Storage for our result. Ideally for an assignment we'd be using
1974 * the actual storage for the result here, instead.
1976 result_src
= get_temp(glsl_type::vec4_type
);
1977 result_dst
= ir_to_mesa_dst_reg_from_src(result_src
);
1981 opcode
= OPCODE_TEX
;
1984 opcode
= OPCODE_TXB
;
1985 ir
->lod_info
.bias
->accept(this);
1986 lod_info
= this->result
;
1989 opcode
= OPCODE_TXL
;
1990 ir
->lod_info
.lod
->accept(this);
1991 lod_info
= this->result
;
1995 assert(!"GLSL 1.30 features unsupported");
1999 if (ir
->projector
) {
2000 if (opcode
== OPCODE_TEX
) {
2001 /* Slot the projector in as the last component of the coord. */
2002 coord_dst
.writemask
= WRITEMASK_W
;
2003 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, coord_dst
, projector
);
2004 coord_dst
.writemask
= WRITEMASK_XYZW
;
2005 opcode
= OPCODE_TXP
;
2007 ir_to_mesa_src_reg coord_w
= coord
;
2008 coord_w
.swizzle
= SWIZZLE_WWWW
;
2010 /* For the other TEX opcodes there's no projective version
2011 * since the last slot is taken up by lod info. Do the
2012 * projective divide now.
2014 coord_dst
.writemask
= WRITEMASK_W
;
2015 ir_to_mesa_emit_op1(ir
, OPCODE_RCP
, coord_dst
, projector
);
2017 coord_dst
.writemask
= WRITEMASK_XYZ
;
2018 ir_to_mesa_emit_op2(ir
, OPCODE_MUL
, coord_dst
, coord
, coord_w
);
2020 coord_dst
.writemask
= WRITEMASK_XYZW
;
2021 coord
.swizzle
= SWIZZLE_XYZW
;
2025 if (ir
->shadow_comparitor
) {
2026 /* Slot the shadow value in as the second to last component of the
2029 ir
->shadow_comparitor
->accept(this);
2030 coord_dst
.writemask
= WRITEMASK_Z
;
2031 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, coord_dst
, this->result
);
2032 coord_dst
.writemask
= WRITEMASK_XYZW
;
2035 if (opcode
== OPCODE_TXL
|| opcode
== OPCODE_TXB
) {
2036 /* Mesa IR stores lod or lod bias in the last channel of the coords. */
2037 coord_dst
.writemask
= WRITEMASK_W
;
2038 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, coord_dst
, lod_info
);
2039 coord_dst
.writemask
= WRITEMASK_XYZW
;
2042 inst
= ir_to_mesa_emit_op1(ir
, opcode
, result_dst
, coord
);
2044 if (ir
->shadow_comparitor
)
2045 inst
->tex_shadow
= GL_TRUE
;
2047 ir_variable
*sampler
= ir
->sampler
->variable_referenced();
2049 /* generate the mapping, remove when we generate storage at
2052 ir
->sampler
->accept(this);
2054 inst
->sampler
= get_sampler_location(sampler
);
2056 ir_dereference_array
*sampler_array
= ir
->sampler
->as_dereference_array();
2057 if (sampler_array
) {
2058 ir_constant
*array_index
=
2059 sampler_array
->array_index
->constant_expression_value();
2061 /* GLSL 1.10 and 1.20 allowed variable sampler array indices,
2062 * while GLSL 1.30 requires that the array indices be constant
2063 * integer expressions. We don't expect any driver to actually
2064 * work with a really variable array index, and in 1.20 all that
2065 * would work would be an unrolled loop counter, so assert that
2066 * we ended up with a constant at least..
2068 assert(array_index
);
2069 inst
->sampler
+= array_index
->value
.i
[0];
2072 const glsl_type
*sampler_type
= sampler
->type
;
2073 while (sampler_type
->base_type
== GLSL_TYPE_ARRAY
)
2074 sampler_type
= sampler_type
->fields
.array
;
2076 switch (sampler_type
->sampler_dimensionality
) {
2077 case GLSL_SAMPLER_DIM_1D
:
2078 inst
->tex_target
= (sampler_type
->sampler_array
)
2079 ? TEXTURE_1D_ARRAY_INDEX
: TEXTURE_1D_INDEX
;
2081 case GLSL_SAMPLER_DIM_2D
:
2082 inst
->tex_target
= (sampler_type
->sampler_array
)
2083 ? TEXTURE_2D_ARRAY_INDEX
: TEXTURE_2D_INDEX
;
2085 case GLSL_SAMPLER_DIM_3D
:
2086 inst
->tex_target
= TEXTURE_3D_INDEX
;
2088 case GLSL_SAMPLER_DIM_CUBE
:
2089 inst
->tex_target
= TEXTURE_CUBE_INDEX
;
2092 assert(!"FINISHME: other texture targets");
2095 this->result
= result_src
;
2099 ir_to_mesa_visitor::visit(ir_return
*ir
)
2101 assert(current_function
);
2103 if (ir
->get_value()) {
2104 ir_to_mesa_dst_reg l
;
2107 ir
->get_value()->accept(this);
2108 ir_to_mesa_src_reg r
= this->result
;
2110 l
= ir_to_mesa_dst_reg_from_src(current_function
->return_reg
);
2112 for (i
= 0; i
< type_size(current_function
->sig
->return_type
); i
++) {
2113 ir_to_mesa_emit_op1(ir
, OPCODE_MOV
, l
, r
);
2119 ir_to_mesa_emit_op0(ir
, OPCODE_RET
);
2123 ir_to_mesa_visitor::visit(ir_discard
*ir
)
2125 assert(ir
->condition
== NULL
); /* FINISHME */
2127 ir_to_mesa_emit_op0(ir
, OPCODE_KIL_NV
);
2131 ir_to_mesa_visitor::visit(ir_if
*ir
)
2133 ir_to_mesa_instruction
*cond_inst
, *if_inst
, *else_inst
= NULL
;
2134 ir_to_mesa_instruction
*prev_inst
;
2136 prev_inst
= (ir_to_mesa_instruction
*)this->instructions
.get_tail();
2138 ir
->condition
->accept(this);
2139 assert(this->result
.file
!= PROGRAM_UNDEFINED
);
2141 if (ctx
->Shader
.EmitCondCodes
) {
2142 cond_inst
= (ir_to_mesa_instruction
*)this->instructions
.get_tail();
2144 /* See if we actually generated any instruction for generating
2145 * the condition. If not, then cook up a move to a temp so we
2146 * have something to set cond_update on.
2148 if (cond_inst
== prev_inst
) {
2149 ir_to_mesa_src_reg temp
= get_temp(glsl_type::bool_type
);
2150 cond_inst
= ir_to_mesa_emit_op1(ir
->condition
, OPCODE_MOV
,
2151 ir_to_mesa_dst_reg_from_src(temp
),
2154 cond_inst
->cond_update
= GL_TRUE
;
2156 if_inst
= ir_to_mesa_emit_op0(ir
->condition
, OPCODE_IF
);
2157 if_inst
->dst_reg
.cond_mask
= COND_NE
;
2159 if_inst
= ir_to_mesa_emit_op1(ir
->condition
,
2160 OPCODE_IF
, ir_to_mesa_undef_dst
,
2164 this->instructions
.push_tail(if_inst
);
2166 visit_exec_list(&ir
->then_instructions
, this);
2168 if (!ir
->else_instructions
.is_empty()) {
2169 else_inst
= ir_to_mesa_emit_op0(ir
->condition
, OPCODE_ELSE
);
2170 visit_exec_list(&ir
->else_instructions
, this);
2173 if_inst
= ir_to_mesa_emit_op1(ir
->condition
, OPCODE_ENDIF
,
2174 ir_to_mesa_undef_dst
, ir_to_mesa_undef
);
2177 ir_to_mesa_visitor::ir_to_mesa_visitor()
2179 result
.file
= PROGRAM_UNDEFINED
;
2181 next_signature_id
= 1;
2183 current_function
= NULL
;
2186 ir_to_mesa_visitor::~ir_to_mesa_visitor()
2188 if (this->sampler_map
)
2189 hash_table_dtor(this->sampler_map
);
2192 static struct prog_src_register
2193 mesa_src_reg_from_ir_src_reg(ir_to_mesa_src_reg reg
)
2195 struct prog_src_register mesa_reg
;
2197 mesa_reg
.File
= reg
.file
;
2198 assert(reg
.index
< (1 << INST_INDEX_BITS
) - 1);
2199 mesa_reg
.Index
= reg
.index
;
2200 mesa_reg
.Swizzle
= reg
.swizzle
;
2201 mesa_reg
.RelAddr
= reg
.reladdr
!= NULL
;
2202 mesa_reg
.Negate
= reg
.negate
;
2204 mesa_reg
.HasIndex2
= GL_FALSE
;
2210 set_branchtargets(ir_to_mesa_visitor
*v
,
2211 struct prog_instruction
*mesa_instructions
,
2212 int num_instructions
)
2214 int if_count
= 0, loop_count
= 0;
2215 int *if_stack
, *loop_stack
;
2216 int if_stack_pos
= 0, loop_stack_pos
= 0;
2219 for (i
= 0; i
< num_instructions
; i
++) {
2220 switch (mesa_instructions
[i
].Opcode
) {
2224 case OPCODE_BGNLOOP
:
2229 mesa_instructions
[i
].BranchTarget
= -1;
2236 if_stack
= (int *)calloc(if_count
, sizeof(*if_stack
));
2237 loop_stack
= (int *)calloc(loop_count
, sizeof(*loop_stack
));
2239 for (i
= 0; i
< num_instructions
; i
++) {
2240 switch (mesa_instructions
[i
].Opcode
) {
2242 if_stack
[if_stack_pos
] = i
;
2246 mesa_instructions
[if_stack
[if_stack_pos
- 1]].BranchTarget
= i
;
2247 if_stack
[if_stack_pos
- 1] = i
;
2250 mesa_instructions
[if_stack
[if_stack_pos
- 1]].BranchTarget
= i
;
2253 case OPCODE_BGNLOOP
:
2254 loop_stack
[loop_stack_pos
] = i
;
2257 case OPCODE_ENDLOOP
:
2259 /* Rewrite any breaks/conts at this nesting level (haven't
2260 * already had a BranchTarget assigned) to point to the end
2263 for (j
= loop_stack
[loop_stack_pos
]; j
< i
; j
++) {
2264 if (mesa_instructions
[j
].Opcode
== OPCODE_BRK
||
2265 mesa_instructions
[j
].Opcode
== OPCODE_CONT
) {
2266 if (mesa_instructions
[j
].BranchTarget
== -1) {
2267 mesa_instructions
[j
].BranchTarget
= i
;
2271 /* The loop ends point at each other. */
2272 mesa_instructions
[i
].BranchTarget
= loop_stack
[loop_stack_pos
];
2273 mesa_instructions
[loop_stack
[loop_stack_pos
]].BranchTarget
= i
;
2276 foreach_iter(exec_list_iterator
, iter
, v
->function_signatures
) {
2277 function_entry
*entry
= (function_entry
*)iter
.get();
2279 if (entry
->sig_id
== mesa_instructions
[i
].BranchTarget
) {
2280 mesa_instructions
[i
].BranchTarget
= entry
->inst
;
2294 print_program(struct prog_instruction
*mesa_instructions
,
2295 ir_instruction
**mesa_instruction_annotation
,
2296 int num_instructions
)
2298 ir_instruction
*last_ir
= NULL
;
2302 for (i
= 0; i
< num_instructions
; i
++) {
2303 struct prog_instruction
*mesa_inst
= mesa_instructions
+ i
;
2304 ir_instruction
*ir
= mesa_instruction_annotation
[i
];
2306 fprintf(stdout
, "%3d: ", i
);
2308 if (last_ir
!= ir
&& ir
) {
2311 for (j
= 0; j
< indent
; j
++) {
2312 fprintf(stdout
, " ");
2318 fprintf(stdout
, " "); /* line number spacing. */
2321 indent
= _mesa_fprint_instruction_opt(stdout
, mesa_inst
, indent
,
2322 PROG_PRINT_DEBUG
, NULL
);
2327 count_resources(struct gl_program
*prog
)
2331 prog
->SamplersUsed
= 0;
2333 for (i
= 0; i
< prog
->NumInstructions
; i
++) {
2334 struct prog_instruction
*inst
= &prog
->Instructions
[i
];
2336 /* Instead of just using the uniform's value to map to a
2337 * sampler, Mesa first allocates a separate number for the
2338 * sampler (_mesa_add_sampler), then we reindex it down to a
2339 * small integer (sampler_map[], SamplersUsed), then that gets
2340 * mapped to the uniform's value, and we get an actual sampler.
2342 if (_mesa_is_tex_instruction(inst
->Opcode
)) {
2343 prog
->SamplerTargets
[inst
->TexSrcUnit
] =
2344 (gl_texture_index
)inst
->TexSrcTarget
;
2345 prog
->SamplersUsed
|= 1 << inst
->TexSrcUnit
;
2346 if (inst
->TexShadow
) {
2347 prog
->ShadowSamplers
|= 1 << inst
->TexSrcUnit
;
2352 _mesa_update_shader_textures_used(prog
);
2355 /* Each stage has some uniforms in its Parameters list. The Uniforms
2356 * list for the linked shader program has a pointer to these uniforms
2357 * in each of the stage's Parameters list, so that their values can be
2358 * updated when a uniform is set.
2361 link_uniforms_to_shared_uniform_list(struct gl_uniform_list
*uniforms
,
2362 struct gl_program
*prog
)
2366 for (i
= 0; i
< prog
->Parameters
->NumParameters
; i
++) {
2367 const struct gl_program_parameter
*p
= prog
->Parameters
->Parameters
+ i
;
2369 if (p
->Type
== PROGRAM_UNIFORM
|| p
->Type
== PROGRAM_SAMPLER
) {
2370 struct gl_uniform
*uniform
=
2371 _mesa_append_uniform(uniforms
, p
->Name
, prog
->Target
, i
);
2373 uniform
->Initialized
= p
->Initialized
;
2379 get_mesa_program(GLcontext
*ctx
, struct gl_shader_program
*shader_program
,
2380 struct gl_shader
*shader
)
2382 void *mem_ctx
= shader_program
;
2383 ir_to_mesa_visitor v
;
2384 struct prog_instruction
*mesa_instructions
, *mesa_inst
;
2385 ir_instruction
**mesa_instruction_annotation
;
2387 struct gl_program
*prog
;
2389 const char *target_string
;
2392 switch (shader
->Type
) {
2393 case GL_VERTEX_SHADER
:
2394 target
= GL_VERTEX_PROGRAM_ARB
;
2395 target_string
= "vertex";
2397 case GL_FRAGMENT_SHADER
:
2398 target
= GL_FRAGMENT_PROGRAM_ARB
;
2399 target_string
= "fragment";
2402 assert(!"should not be reached");
2406 validate_ir_tree(shader
->ir
);
2408 prog
= ctx
->Driver
.NewProgram(ctx
, target
, shader_program
->Name
);
2411 prog
->Parameters
= _mesa_new_parameter_list();
2412 prog
->Varying
= _mesa_new_parameter_list();
2413 prog
->Attributes
= _mesa_new_parameter_list();
2417 v
.mem_ctx
= talloc_new(NULL
);
2419 /* Emit Mesa IR for main(). */
2420 visit_exec_list(shader
->ir
, &v
);
2421 v
.ir_to_mesa_emit_op0(NULL
, OPCODE_END
);
2423 /* Now emit bodies for any functions that were used. */
2425 progress
= GL_FALSE
;
2427 foreach_iter(exec_list_iterator
, iter
, v
.function_signatures
) {
2428 function_entry
*entry
= (function_entry
*)iter
.get();
2430 if (!entry
->bgn_inst
) {
2431 v
.current_function
= entry
;
2433 entry
->bgn_inst
= v
.ir_to_mesa_emit_op0(NULL
, OPCODE_BGNSUB
);
2434 entry
->bgn_inst
->function
= entry
;
2436 visit_exec_list(&entry
->sig
->body
, &v
);
2438 ir_to_mesa_instruction
*last
;
2439 last
= (ir_to_mesa_instruction
*)v
.instructions
.get_tail();
2440 if (last
->op
!= OPCODE_RET
)
2441 v
.ir_to_mesa_emit_op0(NULL
, OPCODE_RET
);
2443 ir_to_mesa_instruction
*end
;
2444 end
= v
.ir_to_mesa_emit_op0(NULL
, OPCODE_ENDSUB
);
2445 end
->function
= entry
;
2452 prog
->NumTemporaries
= v
.next_temp
;
2454 int num_instructions
= 0;
2455 foreach_iter(exec_list_iterator
, iter
, v
.instructions
) {
2460 (struct prog_instruction
*)calloc(num_instructions
,
2461 sizeof(*mesa_instructions
));
2462 mesa_instruction_annotation
= talloc_array(mem_ctx
, ir_instruction
*,
2465 mesa_inst
= mesa_instructions
;
2467 foreach_iter(exec_list_iterator
, iter
, v
.instructions
) {
2468 ir_to_mesa_instruction
*inst
= (ir_to_mesa_instruction
*)iter
.get();
2470 mesa_inst
->Opcode
= inst
->op
;
2471 mesa_inst
->CondUpdate
= inst
->cond_update
;
2472 mesa_inst
->DstReg
.File
= inst
->dst_reg
.file
;
2473 mesa_inst
->DstReg
.Index
= inst
->dst_reg
.index
;
2474 mesa_inst
->DstReg
.CondMask
= inst
->dst_reg
.cond_mask
;
2475 mesa_inst
->DstReg
.WriteMask
= inst
->dst_reg
.writemask
;
2476 mesa_inst
->DstReg
.RelAddr
= inst
->dst_reg
.reladdr
!= NULL
;
2477 mesa_inst
->SrcReg
[0] = mesa_src_reg_from_ir_src_reg(inst
->src_reg
[0]);
2478 mesa_inst
->SrcReg
[1] = mesa_src_reg_from_ir_src_reg(inst
->src_reg
[1]);
2479 mesa_inst
->SrcReg
[2] = mesa_src_reg_from_ir_src_reg(inst
->src_reg
[2]);
2480 mesa_inst
->TexSrcUnit
= inst
->sampler
;
2481 mesa_inst
->TexSrcTarget
= inst
->tex_target
;
2482 mesa_inst
->TexShadow
= inst
->tex_shadow
;
2483 mesa_instruction_annotation
[i
] = inst
->ir
;
2485 if (ctx
->Shader
.EmitNoIfs
&& mesa_inst
->Opcode
== OPCODE_IF
) {
2486 shader_program
->InfoLog
=
2487 talloc_asprintf_append(shader_program
->InfoLog
,
2488 "Couldn't flatten if statement\n");
2489 shader_program
->LinkStatus
= false;
2492 switch (mesa_inst
->Opcode
) {
2494 inst
->function
->inst
= i
;
2495 mesa_inst
->Comment
= strdup(inst
->function
->sig
->function_name());
2498 mesa_inst
->Comment
= strdup(inst
->function
->sig
->function_name());
2501 mesa_inst
->BranchTarget
= inst
->function
->sig_id
; /* rewritten later */
2504 prog
->NumAddressRegs
= 1;
2514 set_branchtargets(&v
, mesa_instructions
, num_instructions
);
2516 if (ctx
->Shader
.Flags
& GLSL_DUMP
) {
2518 printf("GLSL IR for linked %s program %d:\n", target_string
,
2519 shader_program
->Name
);
2520 _mesa_print_ir(shader
->ir
, NULL
);
2523 printf("Mesa IR for linked %s program %d:\n", target_string
,
2524 shader_program
->Name
);
2525 print_program(mesa_instructions
, mesa_instruction_annotation
,
2529 prog
->Instructions
= mesa_instructions
;
2530 prog
->NumInstructions
= num_instructions
;
2532 do_set_program_inouts(shader
->ir
, prog
);
2533 count_resources(prog
);
2535 _mesa_reference_program(ctx
, &shader
->Program
, prog
);
2537 if ((ctx
->Shader
.Flags
& GLSL_NO_OPT
) == 0) {
2538 _mesa_optimize_program(ctx
, prog
);
2547 _mesa_glsl_compile_shader(GLcontext
*ctx
, struct gl_shader
*shader
)
2549 struct _mesa_glsl_parse_state
*state
=
2550 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Type
, shader
);
2552 const char *source
= shader
->Source
;
2553 state
->error
= preprocess(state
, &source
, &state
->info_log
,
2556 if (!state
->error
) {
2557 _mesa_glsl_lexer_ctor(state
, source
);
2558 _mesa_glsl_parse(state
);
2559 _mesa_glsl_lexer_dtor(state
);
2562 shader
->ir
= new(shader
) exec_list
;
2563 if (!state
->error
&& !state
->translation_unit
.is_empty())
2564 _mesa_ast_to_hir(shader
->ir
, state
);
2566 if (!state
->error
&& !shader
->ir
->is_empty()) {
2567 validate_ir_tree(shader
->ir
);
2570 do_mat_op_to_vec(shader
->ir
);
2571 do_mod_to_fract(shader
->ir
);
2572 do_div_to_mul_rcp(shader
->ir
);
2574 /* Optimization passes */
2579 progress
= do_if_simplification(shader
->ir
) || progress
;
2580 progress
= do_copy_propagation(shader
->ir
) || progress
;
2581 progress
= do_dead_code_local(shader
->ir
) || progress
;
2582 progress
= do_dead_code_unlinked(shader
->ir
) || progress
;
2583 progress
= do_tree_grafting(shader
->ir
) || progress
;
2584 progress
= do_constant_variable_unlinked(shader
->ir
) || progress
;
2585 progress
= do_constant_folding(shader
->ir
) || progress
;
2586 progress
= do_algebraic(shader
->ir
) || progress
;
2587 progress
= do_if_return(shader
->ir
) || progress
;
2588 if (ctx
->Shader
.EmitNoIfs
)
2589 progress
= do_if_to_cond_assign(shader
->ir
) || progress
;
2591 progress
= do_vec_index_to_swizzle(shader
->ir
) || progress
;
2592 /* Do this one after the previous to let the easier pass handle
2593 * constant vector indexing.
2595 progress
= do_vec_index_to_cond_assign(shader
->ir
) || progress
;
2597 progress
= do_swizzle_swizzle(shader
->ir
) || progress
;
2600 validate_ir_tree(shader
->ir
);
2603 shader
->symbols
= state
->symbols
;
2605 shader
->CompileStatus
= !state
->error
;
2606 shader
->InfoLog
= state
->info_log
;
2607 shader
->Version
= state
->language_version
;
2608 memcpy(shader
->builtins_to_link
, state
->builtins_to_link
,
2609 sizeof(shader
->builtins_to_link
[0]) * state
->num_builtins_to_link
);
2610 shader
->num_builtins_to_link
= state
->num_builtins_to_link
;
2612 if (ctx
->Shader
.Flags
& GLSL_LOG
) {
2613 _mesa_write_shader_to_file(shader
);
2616 if (ctx
->Shader
.Flags
& GLSL_DUMP
) {
2617 printf("GLSL source for shader %d:\n", shader
->Name
);
2618 printf("%s\n", shader
->Source
);
2620 if (shader
->CompileStatus
) {
2621 printf("GLSL IR for shader %d:\n", shader
->Name
);
2622 _mesa_print_ir(shader
->ir
, NULL
);
2627 /* Retain any live IR, but trash the rest. */
2628 reparent_ir(shader
->ir
, shader
);
2634 _mesa_glsl_link_shader(GLcontext
*ctx
, struct gl_shader_program
*prog
)
2638 _mesa_clear_shader_program_data(ctx
, prog
);
2640 prog
->LinkStatus
= GL_TRUE
;
2642 for (i
= 0; i
< prog
->NumShaders
; i
++) {
2643 if (!prog
->Shaders
[i
]->CompileStatus
) {
2645 talloc_asprintf_append(prog
->InfoLog
,
2646 "linking with uncompiled shader");
2647 prog
->LinkStatus
= GL_FALSE
;
2651 prog
->Varying
= _mesa_new_parameter_list();
2652 _mesa_reference_vertprog(ctx
, &prog
->VertexProgram
, NULL
);
2653 _mesa_reference_fragprog(ctx
, &prog
->FragmentProgram
, NULL
);
2655 if (prog
->LinkStatus
) {
2658 /* We don't use the linker's uniforms list, and cook up our own at
2661 free(prog
->Uniforms
);
2662 prog
->Uniforms
= _mesa_new_uniform_list();
2665 if (prog
->LinkStatus
) {
2666 for (i
= 0; i
< prog
->_NumLinkedShaders
; i
++) {
2667 struct gl_program
*linked_prog
;
2670 linked_prog
= get_mesa_program(ctx
, prog
,
2671 prog
->_LinkedShaders
[i
]);
2673 link_uniforms_to_shared_uniform_list(prog
->Uniforms
, linked_prog
);
2675 switch (prog
->_LinkedShaders
[i
]->Type
) {
2676 case GL_VERTEX_SHADER
:
2677 _mesa_reference_vertprog(ctx
, &prog
->VertexProgram
,
2678 (struct gl_vertex_program
*)linked_prog
);
2679 ok
= ctx
->Driver
.ProgramStringNotify(ctx
, GL_VERTEX_PROGRAM_ARB
,
2682 case GL_FRAGMENT_SHADER
:
2683 _mesa_reference_fragprog(ctx
, &prog
->FragmentProgram
,
2684 (struct gl_fragment_program
*)linked_prog
);
2685 ok
= ctx
->Driver
.ProgramStringNotify(ctx
, GL_FRAGMENT_PROGRAM_ARB
,
2690 prog
->LinkStatus
= GL_FALSE
;