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33 #include "glsl_types.h"
35 #include "ir_visitor.h"
36 #include "ir_hierarchical_visitor.h"
37 #include "main/mtypes.h"
42 * \defgroup IR Intermediate representation nodes
50 * Each concrete class derived from \c ir_instruction has a value in this
51 * enumerant. The value for the type is stored in \c ir_instruction::ir_type
52 * by the constructor. While using type tags is not very C++, it is extremely
53 * convenient. For example, during debugging you can simply inspect
54 * \c ir_instruction::ir_type to find out the actual type of the object.
56 * In addition, it is possible to use a switch-statement based on \c
57 * \c ir_instruction::ir_type to select different behavior for different object
58 * types. For functions that have only slight differences for several object
59 * types, this allows writing very straightforward, readable code.
63 * Zero is unused so that the IR validator can detect cases where
64 * \c ir_instruction::ir_type has not been initialized.
71 ir_type_dereference_array
,
72 ir_type_dereference_record
,
73 ir_type_dereference_variable
,
77 ir_type_function_signature
,
85 ir_type_end_primitive
,
86 ir_type_max
/**< maximum ir_type enum number, for validation */
90 * Base class of all IR instructions
92 class ir_instruction
: public exec_node
{
94 enum ir_node_type ir_type
;
97 * GCC 4.7+ and clang warn when deleting an ir_instruction unless
98 * there's a virtual destructor present. Because we almost
99 * universally use ralloc for our memory management of
100 * ir_instructions, the destructor doesn't need to do any work.
102 virtual ~ir_instruction()
106 /** ir_print_visitor helper for debugging. */
107 void print(void) const;
109 virtual void accept(ir_visitor
*) = 0;
110 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*) = 0;
111 virtual ir_instruction
*clone(void *mem_ctx
,
112 struct hash_table
*ht
) const = 0;
115 * \name IR instruction downcast functions
117 * These functions either cast the object to a derived class or return
118 * \c NULL if the object's type does not match the specified derived class.
119 * Additional downcast functions will be added as needed.
122 virtual class ir_variable
* as_variable() { return NULL
; }
123 virtual class ir_function
* as_function() { return NULL
; }
124 virtual class ir_dereference
* as_dereference() { return NULL
; }
125 virtual class ir_dereference_array
* as_dereference_array() { return NULL
; }
126 virtual class ir_dereference_variable
*as_dereference_variable() { return NULL
; }
127 virtual class ir_dereference_record
*as_dereference_record() { return NULL
; }
128 virtual class ir_expression
* as_expression() { return NULL
; }
129 virtual class ir_rvalue
* as_rvalue() { return NULL
; }
130 virtual class ir_loop
* as_loop() { return NULL
; }
131 virtual class ir_assignment
* as_assignment() { return NULL
; }
132 virtual class ir_call
* as_call() { return NULL
; }
133 virtual class ir_return
* as_return() { return NULL
; }
134 virtual class ir_if
* as_if() { return NULL
; }
135 virtual class ir_swizzle
* as_swizzle() { return NULL
; }
136 virtual class ir_constant
* as_constant() { return NULL
; }
137 virtual class ir_discard
* as_discard() { return NULL
; }
138 virtual class ir_jump
* as_jump() { return NULL
; }
144 ir_type
= ir_type_unset
;
150 * The base class for all "values"/expression trees.
152 class ir_rvalue
: public ir_instruction
{
154 const struct glsl_type
*type
;
156 virtual ir_rvalue
*clone(void *mem_ctx
, struct hash_table
*) const;
158 virtual void accept(ir_visitor
*v
)
163 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
165 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
167 virtual ir_rvalue
* as_rvalue()
172 ir_rvalue
*as_rvalue_to_saturate();
174 virtual bool is_lvalue() const
180 * Get the variable that is ultimately referenced by an r-value
182 virtual ir_variable
*variable_referenced() const
189 * If an r-value is a reference to a whole variable, get that variable
192 * Pointer to a variable that is completely dereferenced by the r-value. If
193 * the r-value is not a dereference or the dereference does not access the
194 * entire variable (i.e., it's just one array element, struct field), \c NULL
197 virtual ir_variable
*whole_variable_referenced()
203 * Determine if an r-value has the value zero
205 * The base implementation of this function always returns \c false. The
206 * \c ir_constant class over-rides this function to return \c true \b only
207 * for vector and scalar types that have all elements set to the value
208 * zero (or \c false for booleans).
210 * \sa ir_constant::has_value, ir_rvalue::is_one, ir_rvalue::is_negative_one,
211 * ir_constant::is_basis
213 virtual bool is_zero() const;
216 * Determine if an r-value has the value one
218 * The base implementation of this function always returns \c false. The
219 * \c ir_constant class over-rides this function to return \c true \b only
220 * for vector and scalar types that have all elements set to the value
221 * one (or \c true for booleans).
223 * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_negative_one,
224 * ir_constant::is_basis
226 virtual bool is_one() const;
229 * Determine if an r-value has the value negative one
231 * The base implementation of this function always returns \c false. The
232 * \c ir_constant class over-rides this function to return \c true \b only
233 * for vector and scalar types that have all elements set to the value
234 * negative one. For boolean types, the result is always \c false.
236 * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_one
237 * ir_constant::is_basis
239 virtual bool is_negative_one() const;
242 * Determine if an r-value is a basis vector
244 * The base implementation of this function always returns \c false. The
245 * \c ir_constant class over-rides this function to return \c true \b only
246 * for vector and scalar types that have one element set to the value one,
247 * and the other elements set to the value zero. For boolean types, the
248 * result is always \c false.
250 * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_one,
251 * is_constant::is_negative_one
253 virtual bool is_basis() const;
257 * Return a generic value of error_type.
259 * Allocation will be performed with 'mem_ctx' as ralloc owner.
261 static ir_rvalue
*error_value(void *mem_ctx
);
269 * Variable storage classes
271 enum ir_variable_mode
{
272 ir_var_auto
= 0, /**< Function local variables and globals. */
273 ir_var_uniform
, /**< Variable declared as a uniform. */
278 ir_var_function_inout
,
279 ir_var_const_in
, /**< "in" param that must be a constant expression */
280 ir_var_system_value
, /**< Ex: front-face, instance-id, etc. */
281 ir_var_temporary
, /**< Temporary variable generated during compilation. */
282 ir_var_mode_count
/**< Number of variable modes */
286 * \brief Layout qualifiers for gl_FragDepth.
288 * The AMD/ARB_conservative_depth extensions allow gl_FragDepth to be redeclared
289 * with a layout qualifier.
291 enum ir_depth_layout
{
292 ir_depth_layout_none
, /**< No depth layout is specified. */
294 ir_depth_layout_greater
,
295 ir_depth_layout_less
,
296 ir_depth_layout_unchanged
300 * \brief Convert depth layout qualifier to string.
303 depth_layout_string(ir_depth_layout layout
);
306 * Description of built-in state associated with a uniform
308 * \sa ir_variable::state_slots
310 struct ir_state_slot
{
315 class ir_variable
: public ir_instruction
{
317 ir_variable(const struct glsl_type
*, const char *, ir_variable_mode
);
319 virtual ir_variable
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
321 virtual ir_variable
*as_variable()
326 virtual void accept(ir_visitor
*v
)
331 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
335 * Get the string value for the interpolation qualifier
337 * \return The string that would be used in a shader to specify \c
338 * mode will be returned.
340 * This function is used to generate error messages of the form "shader
341 * uses %s interpolation qualifier", so in the case where there is no
342 * interpolation qualifier, it returns "no".
344 * This function should only be used on a shader input or output variable.
346 const char *interpolation_string() const;
349 * Determine how this variable should be interpolated based on its
350 * interpolation qualifier (if present), whether it is gl_Color or
351 * gl_SecondaryColor, and whether flatshading is enabled in the current GL
354 * The return value will always be either INTERP_QUALIFIER_SMOOTH,
355 * INTERP_QUALIFIER_NOPERSPECTIVE, or INTERP_QUALIFIER_FLAT.
357 glsl_interp_qualifier
determine_interpolation_mode(bool flat_shade
);
360 * Determine whether or not a variable is part of a uniform block.
362 inline bool is_in_uniform_block() const
364 return this->mode
== ir_var_uniform
&& this->interface_type
!= NULL
;
368 * Determine whether or not a variable is the declaration of an interface
371 * For the first declaration below, there will be an \c ir_variable named
372 * "instance" whose type and whose instance_type will be the same
373 * \cglsl_type. For the second declaration, there will be an \c ir_variable
374 * named "f" whose type is float and whose instance_type is B2.
376 * "instance" is an interface instance variable, but "f" is not.
386 inline bool is_interface_instance() const
388 const glsl_type
*const t
= this->type
;
390 return (t
== this->interface_type
)
391 || (t
->is_array() && t
->fields
.array
== this->interface_type
);
395 * Declared type of the variable
397 const struct glsl_type
*type
;
400 * Declared name of the variable
405 * Highest element accessed with a constant expression array index
407 * Not used for non-array variables.
409 unsigned max_array_access
;
412 * Is the variable read-only?
414 * This is set for variables declared as \c const, shader inputs,
417 unsigned read_only
:1;
419 unsigned invariant
:1;
422 * Has this variable been used for reading or writing?
424 * Several GLSL semantic checks require knowledge of whether or not a
425 * variable has been used. For example, it is an error to redeclare a
426 * variable as invariant after it has been used.
428 * This is only maintained in the ast_to_hir.cpp path, not in
429 * Mesa's fixed function or ARB program paths.
434 * Has this variable been statically assigned?
436 * This answers whether the variable was assigned in any path of
437 * the shader during ast_to_hir. This doesn't answer whether it is
438 * still written after dead code removal, nor is it maintained in
439 * non-ast_to_hir.cpp (GLSL parsing) paths.
444 * Storage class of the variable.
446 * \sa ir_variable_mode
451 * Interpolation mode for shader inputs / outputs
453 * \sa ir_variable_interpolation
455 unsigned interpolation
:2;
458 * \name ARB_fragment_coord_conventions
461 unsigned origin_upper_left
:1;
462 unsigned pixel_center_integer
:1;
466 * Was the location explicitly set in the shader?
468 * If the location is explicitly set in the shader, it \b cannot be changed
469 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
472 unsigned explicit_location
:1;
473 unsigned explicit_index
:1;
476 * Was an initial binding explicitly set in the shader?
478 * If so, constant_value contains an integer ir_constant representing the
479 * initial binding point.
481 unsigned explicit_binding
:1;
484 * Does this variable have an initializer?
486 * This is used by the linker to cross-validiate initializers of global
489 unsigned has_initializer
:1;
492 * Is this variable a generic output or input that has not yet been matched
493 * up to a variable in another stage of the pipeline?
495 * This is used by the linker as scratch storage while assigning locations
496 * to generic inputs and outputs.
498 unsigned is_unmatched_generic_inout
:1;
501 * If non-zero, then this variable may be packed along with other variables
502 * into a single varying slot, so this offset should be applied when
503 * accessing components. For example, an offset of 1 means that the x
504 * component of this variable is actually stored in component y of the
505 * location specified by \c location.
507 unsigned location_frac
:2;
510 * \brief Layout qualifier for gl_FragDepth.
512 * This is not equal to \c ir_depth_layout_none if and only if this
513 * variable is \c gl_FragDepth and a layout qualifier is specified.
515 ir_depth_layout depth_layout
;
518 * Storage location of the base of this variable
520 * The precise meaning of this field depends on the nature of the variable.
522 * - Vertex shader input: one of the values from \c gl_vert_attrib.
523 * - Vertex shader output: one of the values from \c gl_varying_slot.
524 * - Geometry shader input: one of the values from \c gl_varying_slot.
525 * - Geometry shader output: one of the values from \c gl_varying_slot.
526 * - Fragment shader input: one of the values from \c gl_varying_slot.
527 * - Fragment shader output: one of the values from \c gl_frag_result.
528 * - Uniforms: Per-stage uniform slot number for default uniform block.
529 * - Uniforms: Index within the uniform block definition for UBO members.
530 * - Other: This field is not currently used.
532 * If the variable is a uniform, shader input, or shader output, and the
533 * slot has not been assigned, the value will be -1.
538 * output index for dual source blending.
543 * Initial binding point for a sampler or UBO.
545 * For array types, this represents the binding point for the first element.
550 * Built-in state that backs this uniform
552 * Once set at variable creation, \c state_slots must remain invariant.
553 * This is because, ideally, this array would be shared by all clones of
554 * this variable in the IR tree. In other words, we'd really like for it
555 * to be a fly-weight.
557 * If the variable is not a uniform, \c num_state_slots will be zero and
558 * \c state_slots will be \c NULL.
561 unsigned num_state_slots
; /**< Number of state slots used */
562 ir_state_slot
*state_slots
; /**< State descriptors. */
566 * Emit a warning if this variable is accessed.
568 const char *warn_extension
;
571 * Value assigned in the initializer of a variable declared "const"
573 ir_constant
*constant_value
;
576 * Constant expression assigned in the initializer of the variable
579 * This field and \c ::constant_value are distinct. Even if the two fields
580 * refer to constants with the same value, they must point to separate
583 ir_constant
*constant_initializer
;
586 * For variables that are in an interface block or are an instance of an
587 * interface block, this is the \c GLSL_TYPE_INTERFACE type for that block.
589 * \sa ir_variable::location
591 const glsl_type
*interface_type
;
595 * A function that returns whether a built-in function is available in the
596 * current shading language (based on version, ES or desktop, and extensions).
598 typedef bool (*builtin_available_predicate
)(const _mesa_glsl_parse_state
*);
602 * The representation of a function instance; may be the full definition or
603 * simply a prototype.
605 class ir_function_signature
: public ir_instruction
{
606 /* An ir_function_signature will be part of the list of signatures in
610 ir_function_signature(const glsl_type
*return_type
,
611 builtin_available_predicate builtin_avail
= NULL
);
613 virtual ir_function_signature
*clone(void *mem_ctx
,
614 struct hash_table
*ht
) const;
615 ir_function_signature
*clone_prototype(void *mem_ctx
,
616 struct hash_table
*ht
) const;
618 virtual void accept(ir_visitor
*v
)
623 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
626 * Attempt to evaluate this function as a constant expression,
627 * given a list of the actual parameters and the variable context.
628 * Returns NULL for non-built-ins.
630 ir_constant
*constant_expression_value(exec_list
*actual_parameters
, struct hash_table
*variable_context
);
633 * Get the name of the function for which this is a signature
635 const char *function_name() const;
638 * Get a handle to the function for which this is a signature
640 * There is no setter function, this function returns a \c const pointer,
641 * and \c ir_function_signature::_function is private for a reason. The
642 * only way to make a connection between a function and function signature
643 * is via \c ir_function::add_signature. This helps ensure that certain
644 * invariants (i.e., a function signature is in the list of signatures for
645 * its \c _function) are met.
647 * \sa ir_function::add_signature
649 inline const class ir_function
*function() const
651 return this->_function
;
655 * Check whether the qualifiers match between this signature's parameters
656 * and the supplied parameter list. If not, returns the name of the first
657 * parameter with mismatched qualifiers (for use in error messages).
659 const char *qualifiers_match(exec_list
*params
);
662 * Replace the current parameter list with the given one. This is useful
663 * if the current information came from a prototype, and either has invalid
664 * or missing parameter names.
666 void replace_parameters(exec_list
*new_params
);
669 * Function return type.
671 * \note This discards the optional precision qualifier.
673 const struct glsl_type
*return_type
;
676 * List of ir_variable of function parameters.
678 * This represents the storage. The paramaters passed in a particular
679 * call will be in ir_call::actual_paramaters.
681 struct exec_list parameters
;
683 /** Whether or not this function has a body (which may be empty). */
684 unsigned is_defined
:1;
686 /** Whether or not this function signature is a built-in. */
687 bool is_builtin() const;
689 /** Whether or not a built-in is available for this shader. */
690 bool is_builtin_available(const _mesa_glsl_parse_state
*state
) const;
692 /** Body of instructions in the function. */
693 struct exec_list body
;
697 * A function pointer to a predicate that answers whether a built-in
698 * function is available in the current shader. NULL if not a built-in.
700 builtin_available_predicate builtin_avail
;
702 /** Function of which this signature is one overload. */
703 class ir_function
*_function
;
705 /** Function signature of which this one is a prototype clone */
706 const ir_function_signature
*origin
;
708 friend class ir_function
;
711 * Helper function to run a list of instructions for constant
712 * expression evaluation.
714 * The hash table represents the values of the visible variables.
715 * There are no scoping issues because the table is indexed on
716 * ir_variable pointers, not variable names.
718 * Returns false if the expression is not constant, true otherwise,
719 * and the value in *result if result is non-NULL.
721 bool constant_expression_evaluate_expression_list(const struct exec_list
&body
,
722 struct hash_table
*variable_context
,
723 ir_constant
**result
);
728 * Header for tracking multiple overloaded functions with the same name.
729 * Contains a list of ir_function_signatures representing each of the
732 class ir_function
: public ir_instruction
{
734 ir_function(const char *name
);
736 virtual ir_function
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
738 virtual ir_function
*as_function()
743 virtual void accept(ir_visitor
*v
)
748 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
750 void add_signature(ir_function_signature
*sig
)
752 sig
->_function
= this;
753 this->signatures
.push_tail(sig
);
757 * Get an iterator for the set of function signatures
759 exec_list_iterator
iterator()
761 return signatures
.iterator();
765 * Find a signature that matches a set of actual parameters, taking implicit
766 * conversions into account. Also flags whether the match was exact.
768 ir_function_signature
*matching_signature(_mesa_glsl_parse_state
*state
,
769 const exec_list
*actual_param
,
770 bool *match_is_exact
);
773 * Find a signature that matches a set of actual parameters, taking implicit
774 * conversions into account.
776 ir_function_signature
*matching_signature(_mesa_glsl_parse_state
*state
,
777 const exec_list
*actual_param
);
780 * Find a signature that exactly matches a set of actual parameters without
781 * any implicit type conversions.
783 ir_function_signature
*exact_matching_signature(_mesa_glsl_parse_state
*state
,
784 const exec_list
*actual_ps
);
787 * Name of the function.
791 /** Whether or not this function has a signature that isn't a built-in. */
792 bool has_user_signature();
795 * List of ir_function_signature for each overloaded function with this name.
797 struct exec_list signatures
;
800 inline const char *ir_function_signature::function_name() const
802 return this->_function
->name
;
808 * IR instruction representing high-level if-statements
810 class ir_if
: public ir_instruction
{
812 ir_if(ir_rvalue
*condition
)
813 : condition(condition
)
815 ir_type
= ir_type_if
;
818 virtual ir_if
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
820 virtual ir_if
*as_if()
825 virtual void accept(ir_visitor
*v
)
830 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
832 ir_rvalue
*condition
;
833 /** List of ir_instruction for the body of the then branch */
834 exec_list then_instructions
;
835 /** List of ir_instruction for the body of the else branch */
836 exec_list else_instructions
;
841 * IR instruction representing a high-level loop structure.
843 class ir_loop
: public ir_instruction
{
847 virtual ir_loop
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
849 virtual void accept(ir_visitor
*v
)
854 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
856 virtual ir_loop
*as_loop()
862 * Get an iterator for the instructions of the loop body
864 exec_list_iterator
iterator()
866 return body_instructions
.iterator();
869 /** List of ir_instruction that make up the body of the loop. */
870 exec_list body_instructions
;
873 * \name Loop counter and controls
875 * Represents a loop like a FORTRAN \c do-loop.
878 * If \c from and \c to are the same value, the loop will execute once.
881 ir_rvalue
*from
; /** Value of the loop counter on the first
882 * iteration of the loop.
884 ir_rvalue
*to
; /** Value of the loop counter on the last
885 * iteration of the loop.
887 ir_rvalue
*increment
;
888 ir_variable
*counter
;
891 * Comparison operation in the loop terminator.
893 * If any of the loop control fields are non-\c NULL, this field must be
894 * one of \c ir_binop_less, \c ir_binop_greater, \c ir_binop_lequal,
895 * \c ir_binop_gequal, \c ir_binop_equal, or \c ir_binop_nequal.
902 class ir_assignment
: public ir_instruction
{
904 ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
, ir_rvalue
*condition
= NULL
);
907 * Construct an assignment with an explicit write mask
910 * Since a write mask is supplied, the LHS must already be a bare
911 * \c ir_dereference. The cannot be any swizzles in the LHS.
913 ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
, ir_rvalue
*condition
,
914 unsigned write_mask
);
916 virtual ir_assignment
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
918 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
920 virtual void accept(ir_visitor
*v
)
925 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
927 virtual ir_assignment
* as_assignment()
933 * Get a whole variable written by an assignment
935 * If the LHS of the assignment writes a whole variable, the variable is
936 * returned. Otherwise \c NULL is returned. Examples of whole-variable
939 * - Assigning to a scalar
940 * - Assigning to all components of a vector
941 * - Whole array (or matrix) assignment
942 * - Whole structure assignment
944 ir_variable
*whole_variable_written();
947 * Set the LHS of an assignment
949 void set_lhs(ir_rvalue
*lhs
);
952 * Left-hand side of the assignment.
954 * This should be treated as read only. If you need to set the LHS of an
955 * assignment, use \c ir_assignment::set_lhs.
960 * Value being assigned
965 * Optional condition for the assignment.
967 ir_rvalue
*condition
;
971 * Component mask written
973 * For non-vector types in the LHS, this field will be zero. For vector
974 * types, a bit will be set for each component that is written. Note that
975 * for \c vec2 and \c vec3 types only the lower bits will ever be set.
977 * A partially-set write mask means that each enabled channel gets
978 * the value from a consecutive channel of the rhs. For example,
979 * to write just .xyw of gl_FrontColor with color:
981 * (assign (constant bool (1)) (xyw)
982 * (var_ref gl_FragColor)
983 * (swiz xyw (var_ref color)))
985 unsigned write_mask
:4;
988 /* Update ir_expression::get_num_operands() and operator_strs when
989 * updating this list.
991 enum ir_expression_operation
{
1000 ir_unop_exp
, /**< Log base e on gentype */
1001 ir_unop_log
, /**< Natural log on gentype */
1004 ir_unop_f2i
, /**< Float-to-integer conversion. */
1005 ir_unop_f2u
, /**< Float-to-unsigned conversion. */
1006 ir_unop_i2f
, /**< Integer-to-float conversion. */
1007 ir_unop_f2b
, /**< Float-to-boolean conversion */
1008 ir_unop_b2f
, /**< Boolean-to-float conversion */
1009 ir_unop_i2b
, /**< int-to-boolean conversion */
1010 ir_unop_b2i
, /**< Boolean-to-int conversion */
1011 ir_unop_u2f
, /**< Unsigned-to-float conversion. */
1012 ir_unop_i2u
, /**< Integer-to-unsigned conversion. */
1013 ir_unop_u2i
, /**< Unsigned-to-integer conversion. */
1014 ir_unop_bitcast_i2f
, /**< Bit-identical int-to-float "conversion" */
1015 ir_unop_bitcast_f2i
, /**< Bit-identical float-to-int "conversion" */
1016 ir_unop_bitcast_u2f
, /**< Bit-identical uint-to-float "conversion" */
1017 ir_unop_bitcast_f2u
, /**< Bit-identical float-to-uint "conversion" */
1021 * \name Unary floating-point rounding operations.
1032 * \name Trigonometric operations.
1037 ir_unop_sin_reduced
, /**< Reduced range sin. [-pi, pi] */
1038 ir_unop_cos_reduced
, /**< Reduced range cos. [-pi, pi] */
1042 * \name Partial derivatives.
1050 * \name Floating point pack and unpack operations.
1053 ir_unop_pack_snorm_2x16
,
1054 ir_unop_pack_snorm_4x8
,
1055 ir_unop_pack_unorm_2x16
,
1056 ir_unop_pack_unorm_4x8
,
1057 ir_unop_pack_half_2x16
,
1058 ir_unop_unpack_snorm_2x16
,
1059 ir_unop_unpack_snorm_4x8
,
1060 ir_unop_unpack_unorm_2x16
,
1061 ir_unop_unpack_unorm_4x8
,
1062 ir_unop_unpack_half_2x16
,
1066 * \name Lowered floating point unpacking operations.
1068 * \see lower_packing_builtins_visitor::split_unpack_half_2x16
1071 ir_unop_unpack_half_2x16_split_x
,
1072 ir_unop_unpack_half_2x16_split_y
,
1076 * \name Bit operations, part of ARB_gpu_shader5.
1079 ir_unop_bitfield_reverse
,
1088 * A sentinel marking the last of the unary operations.
1090 ir_last_unop
= ir_unop_noise
,
1098 * Takes one of two combinations of arguments:
1101 * - mod(vecN, float)
1103 * Does not take integer types.
1108 * \name Binary comparison operators which return a boolean vector.
1109 * The type of both operands must be equal.
1119 * Returns single boolean for whether all components of operands[0]
1120 * equal the components of operands[1].
1124 * Returns single boolean for whether any component of operands[0]
1125 * is not equal to the corresponding component of operands[1].
1127 ir_binop_any_nequal
,
1131 * \name Bit-wise binary operations.
1152 * \name Lowered floating point packing operations.
1154 * \see lower_packing_builtins_visitor::split_pack_half_2x16
1157 ir_binop_pack_half_2x16_split
,
1161 * \name First half of a lowered bitfieldInsert() operation.
1163 * \see lower_instructions::bitfield_insert_to_bfm_bfi
1170 * Load a value the size of a given GLSL type from a uniform block.
1172 * operand0 is the ir_constant uniform block index in the linked shader.
1173 * operand1 is a byte offset within the uniform block.
1178 * Extract a scalar from a vector
1180 * operand0 is the vector
1181 * operand1 is the index of the field to read from operand0
1183 ir_binop_vector_extract
,
1186 * A sentinel marking the last of the binary operations.
1188 ir_last_binop
= ir_binop_vector_extract
,
1191 * \name Fused floating-point multiply-add, part of ARB_gpu_shader5.
1200 * \name Second half of a lowered bitfieldInsert() operation.
1202 * \see lower_instructions::bitfield_insert_to_bfm_bfi
1208 ir_triop_bitfield_extract
,
1211 * Generate a value with one field of a vector changed
1213 * operand0 is the vector
1214 * operand1 is the value to write into the vector result
1215 * operand2 is the index in operand0 to be modified
1217 ir_triop_vector_insert
,
1220 * A sentinel marking the last of the ternary operations.
1222 ir_last_triop
= ir_triop_vector_insert
,
1224 ir_quadop_bitfield_insert
,
1229 * A sentinel marking the last of the ternary operations.
1231 ir_last_quadop
= ir_quadop_vector
,
1234 * A sentinel marking the last of all operations.
1236 ir_last_opcode
= ir_quadop_vector
1239 class ir_expression
: public ir_rvalue
{
1241 ir_expression(int op
, const struct glsl_type
*type
,
1242 ir_rvalue
*op0
, ir_rvalue
*op1
= NULL
,
1243 ir_rvalue
*op2
= NULL
, ir_rvalue
*op3
= NULL
);
1246 * Constructor for unary operation expressions
1248 ir_expression(int op
, ir_rvalue
*);
1251 * Constructor for binary operation expressions
1253 ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
);
1256 * Constructor for ternary operation expressions
1258 ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
, ir_rvalue
*op2
);
1260 virtual ir_expression
*as_expression()
1265 virtual ir_expression
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
1268 * Attempt to constant-fold the expression
1270 * The "variable_context" hash table links ir_variable * to ir_constant *
1271 * that represent the variables' values. \c NULL represents an empty
1274 * If the expression cannot be constant folded, this method will return
1277 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1280 * Determine the number of operands used by an expression
1282 static unsigned int get_num_operands(ir_expression_operation
);
1285 * Determine the number of operands used by an expression
1287 unsigned int get_num_operands() const
1289 return (this->operation
== ir_quadop_vector
)
1290 ? this->type
->vector_elements
: get_num_operands(operation
);
1294 * Return a string representing this expression's operator.
1296 const char *operator_string();
1299 * Return a string representing this expression's operator.
1301 static const char *operator_string(ir_expression_operation
);
1305 * Do a reverse-lookup to translate the given string into an operator.
1307 static ir_expression_operation
get_operator(const char *);
1309 virtual void accept(ir_visitor
*v
)
1314 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1316 ir_expression_operation operation
;
1317 ir_rvalue
*operands
[4];
1322 * HIR instruction representing a high-level function call, containing a list
1323 * of parameters and returning a value in the supplied temporary.
1325 class ir_call
: public ir_instruction
{
1327 ir_call(ir_function_signature
*callee
,
1328 ir_dereference_variable
*return_deref
,
1329 exec_list
*actual_parameters
)
1330 : return_deref(return_deref
), callee(callee
)
1332 ir_type
= ir_type_call
;
1333 assert(callee
->return_type
!= NULL
);
1334 actual_parameters
->move_nodes_to(& this->actual_parameters
);
1335 this->use_builtin
= callee
->is_builtin();
1338 virtual ir_call
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
1340 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1342 virtual ir_call
*as_call()
1347 virtual void accept(ir_visitor
*v
)
1352 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1355 * Get an iterator for the set of acutal parameters
1357 exec_list_iterator
iterator()
1359 return actual_parameters
.iterator();
1363 * Get the name of the function being called.
1365 const char *callee_name() const
1367 return callee
->function_name();
1371 * Generates an inline version of the function before @ir,
1372 * storing the return value in return_deref.
1374 void generate_inline(ir_instruction
*ir
);
1377 * Storage for the function's return value.
1378 * This must be NULL if the return type is void.
1380 ir_dereference_variable
*return_deref
;
1383 * The specific function signature being called.
1385 ir_function_signature
*callee
;
1387 /* List of ir_rvalue of paramaters passed in this call. */
1388 exec_list actual_parameters
;
1390 /** Should this call only bind to a built-in function? */
1396 * \name Jump-like IR instructions.
1398 * These include \c break, \c continue, \c return, and \c discard.
1401 class ir_jump
: public ir_instruction
{
1405 ir_type
= ir_type_unset
;
1409 virtual ir_jump
*as_jump()
1415 class ir_return
: public ir_jump
{
1420 this->ir_type
= ir_type_return
;
1423 ir_return(ir_rvalue
*value
)
1426 this->ir_type
= ir_type_return
;
1429 virtual ir_return
*clone(void *mem_ctx
, struct hash_table
*) const;
1431 virtual ir_return
*as_return()
1436 ir_rvalue
*get_value() const
1441 virtual void accept(ir_visitor
*v
)
1446 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1453 * Jump instructions used inside loops
1455 * These include \c break and \c continue. The \c break within a loop is
1456 * different from the \c break within a switch-statement.
1458 * \sa ir_switch_jump
1460 class ir_loop_jump
: public ir_jump
{
1467 ir_loop_jump(jump_mode mode
)
1469 this->ir_type
= ir_type_loop_jump
;
1473 virtual ir_loop_jump
*clone(void *mem_ctx
, struct hash_table
*) const;
1475 virtual void accept(ir_visitor
*v
)
1480 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1482 bool is_break() const
1484 return mode
== jump_break
;
1487 bool is_continue() const
1489 return mode
== jump_continue
;
1492 /** Mode selector for the jump instruction. */
1493 enum jump_mode mode
;
1497 * IR instruction representing discard statements.
1499 class ir_discard
: public ir_jump
{
1503 this->ir_type
= ir_type_discard
;
1504 this->condition
= NULL
;
1507 ir_discard(ir_rvalue
*cond
)
1509 this->ir_type
= ir_type_discard
;
1510 this->condition
= cond
;
1513 virtual ir_discard
*clone(void *mem_ctx
, struct hash_table
*ht
) const;
1515 virtual void accept(ir_visitor
*v
)
1520 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1522 virtual ir_discard
*as_discard()
1527 ir_rvalue
*condition
;
1533 * Texture sampling opcodes used in ir_texture
1535 enum ir_texture_opcode
{
1536 ir_tex
, /**< Regular texture look-up */
1537 ir_txb
, /**< Texture look-up with LOD bias */
1538 ir_txl
, /**< Texture look-up with explicit LOD */
1539 ir_txd
, /**< Texture look-up with partial derivatvies */
1540 ir_txf
, /**< Texel fetch with explicit LOD */
1541 ir_txf_ms
, /**< Multisample texture fetch */
1542 ir_txs
, /**< Texture size */
1543 ir_lod
/**< Texture lod query */
1548 * IR instruction to sample a texture
1550 * The specific form of the IR instruction depends on the \c mode value
1551 * selected from \c ir_texture_opcodes. In the printed IR, these will
1554 * Texel offset (0 or an expression)
1555 * | Projection divisor
1556 * | | Shadow comparitor
1559 * (tex <type> <sampler> <coordinate> 0 1 ( ))
1560 * (txb <type> <sampler> <coordinate> 0 1 ( ) <bias>)
1561 * (txl <type> <sampler> <coordinate> 0 1 ( ) <lod>)
1562 * (txd <type> <sampler> <coordinate> 0 1 ( ) (dPdx dPdy))
1563 * (txf <type> <sampler> <coordinate> 0 <lod>)
1565 * <type> <sampler> <coordinate> <sample_index>)
1566 * (txs <type> <sampler> <lod>)
1567 * (lod <type> <sampler> <coordinate>)
1569 class ir_texture
: public ir_rvalue
{
1571 ir_texture(enum ir_texture_opcode op
)
1572 : op(op
), sampler(NULL
), coordinate(NULL
), projector(NULL
),
1573 shadow_comparitor(NULL
), offset(NULL
)
1575 this->ir_type
= ir_type_texture
;
1576 memset(&lod_info
, 0, sizeof(lod_info
));
1579 virtual ir_texture
*clone(void *mem_ctx
, struct hash_table
*) const;
1581 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1583 virtual void accept(ir_visitor
*v
)
1588 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1591 * Return a string representing the ir_texture_opcode.
1593 const char *opcode_string();
1595 /** Set the sampler and type. */
1596 void set_sampler(ir_dereference
*sampler
, const glsl_type
*type
);
1599 * Do a reverse-lookup to translate a string into an ir_texture_opcode.
1601 static ir_texture_opcode
get_opcode(const char *);
1603 enum ir_texture_opcode op
;
1605 /** Sampler to use for the texture access. */
1606 ir_dereference
*sampler
;
1608 /** Texture coordinate to sample */
1609 ir_rvalue
*coordinate
;
1612 * Value used for projective divide.
1614 * If there is no projective divide (the common case), this will be
1615 * \c NULL. Optimization passes should check for this to point to a constant
1616 * of 1.0 and replace that with \c NULL.
1618 ir_rvalue
*projector
;
1621 * Coordinate used for comparison on shadow look-ups.
1623 * If there is no shadow comparison, this will be \c NULL. For the
1624 * \c ir_txf opcode, this *must* be \c NULL.
1626 ir_rvalue
*shadow_comparitor
;
1628 /** Texel offset. */
1632 ir_rvalue
*lod
; /**< Floating point LOD */
1633 ir_rvalue
*bias
; /**< Floating point LOD bias */
1634 ir_rvalue
*sample_index
; /**< MSAA sample index */
1636 ir_rvalue
*dPdx
; /**< Partial derivative of coordinate wrt X */
1637 ir_rvalue
*dPdy
; /**< Partial derivative of coordinate wrt Y */
1643 struct ir_swizzle_mask
{
1650 * Number of components in the swizzle.
1652 unsigned num_components
:3;
1655 * Does the swizzle contain duplicate components?
1657 * L-value swizzles cannot contain duplicate components.
1659 unsigned has_duplicates
:1;
1663 class ir_swizzle
: public ir_rvalue
{
1665 ir_swizzle(ir_rvalue
*, unsigned x
, unsigned y
, unsigned z
, unsigned w
,
1668 ir_swizzle(ir_rvalue
*val
, const unsigned *components
, unsigned count
);
1670 ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
);
1672 virtual ir_swizzle
*clone(void *mem_ctx
, struct hash_table
*) const;
1674 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1676 virtual ir_swizzle
*as_swizzle()
1682 * Construct an ir_swizzle from the textual representation. Can fail.
1684 static ir_swizzle
*create(ir_rvalue
*, const char *, unsigned vector_length
);
1686 virtual void accept(ir_visitor
*v
)
1691 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1693 bool is_lvalue() const
1695 return val
->is_lvalue() && !mask
.has_duplicates
;
1699 * Get the variable that is ultimately referenced by an r-value
1701 virtual ir_variable
*variable_referenced() const;
1704 ir_swizzle_mask mask
;
1708 * Initialize the mask component of a swizzle
1710 * This is used by the \c ir_swizzle constructors.
1712 void init_mask(const unsigned *components
, unsigned count
);
1716 class ir_dereference
: public ir_rvalue
{
1718 virtual ir_dereference
*clone(void *mem_ctx
, struct hash_table
*) const = 0;
1720 virtual ir_dereference
*as_dereference()
1725 bool is_lvalue() const;
1728 * Get the variable that is ultimately referenced by an r-value
1730 virtual ir_variable
*variable_referenced() const = 0;
1733 * Get the constant that is ultimately referenced by an r-value,
1734 * in a constant expression evaluation context.
1736 * The offset is used when the reference is to a specific column of
1739 virtual void constant_referenced(struct hash_table
*variable_context
, ir_constant
*&store
, int &offset
) const = 0;
1743 class ir_dereference_variable
: public ir_dereference
{
1745 ir_dereference_variable(ir_variable
*var
);
1747 virtual ir_dereference_variable
*clone(void *mem_ctx
,
1748 struct hash_table
*) const;
1750 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1752 virtual ir_dereference_variable
*as_dereference_variable()
1758 * Get the variable that is ultimately referenced by an r-value
1760 virtual ir_variable
*variable_referenced() const
1766 * Get the constant that is ultimately referenced by an r-value,
1767 * in a constant expression evaluation context.
1769 * The offset is used when the reference is to a specific column of
1772 virtual void constant_referenced(struct hash_table
*variable_context
, ir_constant
*&store
, int &offset
) const;
1774 virtual ir_variable
*whole_variable_referenced()
1776 /* ir_dereference_variable objects always dereference the entire
1777 * variable. However, if this dereference is dereferenced by anything
1778 * else, the complete deferefernce chain is not a whole-variable
1779 * dereference. This method should only be called on the top most
1780 * ir_rvalue in a dereference chain.
1785 virtual void accept(ir_visitor
*v
)
1790 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1793 * Object being dereferenced.
1799 class ir_dereference_array
: public ir_dereference
{
1801 ir_dereference_array(ir_rvalue
*value
, ir_rvalue
*array_index
);
1803 ir_dereference_array(ir_variable
*var
, ir_rvalue
*array_index
);
1805 virtual ir_dereference_array
*clone(void *mem_ctx
,
1806 struct hash_table
*) const;
1808 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1810 virtual ir_dereference_array
*as_dereference_array()
1816 * Get the variable that is ultimately referenced by an r-value
1818 virtual ir_variable
*variable_referenced() const
1820 return this->array
->variable_referenced();
1824 * Get the constant that is ultimately referenced by an r-value,
1825 * in a constant expression evaluation context.
1827 * The offset is used when the reference is to a specific column of
1830 virtual void constant_referenced(struct hash_table
*variable_context
, ir_constant
*&store
, int &offset
) const;
1832 virtual void accept(ir_visitor
*v
)
1837 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1840 ir_rvalue
*array_index
;
1843 void set_array(ir_rvalue
*value
);
1847 class ir_dereference_record
: public ir_dereference
{
1849 ir_dereference_record(ir_rvalue
*value
, const char *field
);
1851 ir_dereference_record(ir_variable
*var
, const char *field
);
1853 virtual ir_dereference_record
*clone(void *mem_ctx
,
1854 struct hash_table
*) const;
1856 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1858 virtual ir_dereference_record
*as_dereference_record()
1864 * Get the variable that is ultimately referenced by an r-value
1866 virtual ir_variable
*variable_referenced() const
1868 return this->record
->variable_referenced();
1872 * Get the constant that is ultimately referenced by an r-value,
1873 * in a constant expression evaluation context.
1875 * The offset is used when the reference is to a specific column of
1878 virtual void constant_referenced(struct hash_table
*variable_context
, ir_constant
*&store
, int &offset
) const;
1880 virtual void accept(ir_visitor
*v
)
1885 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1893 * Data stored in an ir_constant
1895 union ir_constant_data
{
1903 class ir_constant
: public ir_rvalue
{
1905 ir_constant(const struct glsl_type
*type
, const ir_constant_data
*data
);
1906 ir_constant(bool b
);
1907 ir_constant(unsigned int u
);
1909 ir_constant(float f
);
1912 * Construct an ir_constant from a list of ir_constant values
1914 ir_constant(const struct glsl_type
*type
, exec_list
*values
);
1917 * Construct an ir_constant from a scalar component of another ir_constant
1919 * The new \c ir_constant inherits the type of the component from the
1923 * In the case of a matrix constant, the new constant is a scalar, \b not
1926 ir_constant(const ir_constant
*c
, unsigned i
);
1929 * Return a new ir_constant of the specified type containing all zeros.
1931 static ir_constant
*zero(void *mem_ctx
, const glsl_type
*type
);
1933 virtual ir_constant
*clone(void *mem_ctx
, struct hash_table
*) const;
1935 virtual ir_constant
*constant_expression_value(struct hash_table
*variable_context
= NULL
);
1937 virtual ir_constant
*as_constant()
1942 virtual void accept(ir_visitor
*v
)
1947 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
1950 * Get a particular component of a constant as a specific type
1952 * This is useful, for example, to get a value from an integer constant
1953 * as a float or bool. This appears frequently when constructors are
1954 * called with all constant parameters.
1957 bool get_bool_component(unsigned i
) const;
1958 float get_float_component(unsigned i
) const;
1959 int get_int_component(unsigned i
) const;
1960 unsigned get_uint_component(unsigned i
) const;
1963 ir_constant
*get_array_element(unsigned i
) const;
1965 ir_constant
*get_record_field(const char *name
);
1968 * Copy the values on another constant at a given offset.
1970 * The offset is ignored for array or struct copies, it's only for
1971 * scalars or vectors into vectors or matrices.
1973 * With identical types on both sides and zero offset it's clone()
1974 * without creating a new object.
1977 void copy_offset(ir_constant
*src
, int offset
);
1980 * Copy the values on another constant at a given offset and
1981 * following an assign-like mask.
1983 * The mask is ignored for scalars.
1985 * Note that this function only handles what assign can handle,
1986 * i.e. at most a vector as source and a column of a matrix as
1990 void copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
);
1993 * Determine whether a constant has the same value as another constant
1995 * \sa ir_constant::is_zero, ir_constant::is_one,
1996 * ir_constant::is_negative_one, ir_constant::is_basis
1998 bool has_value(const ir_constant
*) const;
2000 virtual bool is_zero() const;
2001 virtual bool is_one() const;
2002 virtual bool is_negative_one() const;
2003 virtual bool is_basis() const;
2006 * Value of the constant.
2008 * The field used to back the values supplied by the constant is determined
2009 * by the type associated with the \c ir_instruction. Constants may be
2010 * scalars, vectors, or matrices.
2012 union ir_constant_data value
;
2014 /* Array elements */
2015 ir_constant
**array_elements
;
2017 /* Structure fields */
2018 exec_list components
;
2022 * Parameterless constructor only used by the clone method
2030 * IR instruction to emit a vertex in a geometry shader.
2032 class ir_emit_vertex
: public ir_instruction
{
2036 ir_type
= ir_type_emit_vertex
;
2039 virtual void accept(ir_visitor
*v
)
2044 virtual ir_emit_vertex
*clone(void *mem_ctx
, struct hash_table
*) const
2046 return new(mem_ctx
) ir_emit_vertex();
2049 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
2053 * IR instruction to complete the current primitive and start a new one in a
2056 class ir_end_primitive
: public ir_instruction
{
2060 ir_type
= ir_type_end_primitive
;
2063 virtual void accept(ir_visitor
*v
)
2068 virtual ir_end_primitive
*clone(void *mem_ctx
, struct hash_table
*) const
2070 return new(mem_ctx
) ir_end_primitive();
2073 virtual ir_visitor_status
accept(ir_hierarchical_visitor
*);
2077 * Apply a visitor to each IR node in a list
2080 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
);
2083 * Validate invariants on each IR node in a list
2085 void validate_ir_tree(exec_list
*instructions
);
2087 struct _mesa_glsl_parse_state
;
2088 struct gl_shader_program
;
2091 * Detect whether an unlinked shader contains static recursion
2093 * If the list of instructions is determined to contain static recursion,
2094 * \c _mesa_glsl_error will be called to emit error messages for each function
2095 * that is in the recursion cycle.
2098 detect_recursion_unlinked(struct _mesa_glsl_parse_state
*state
,
2099 exec_list
*instructions
);
2102 * Detect whether a linked shader contains static recursion
2104 * If the list of instructions is determined to contain static recursion,
2105 * \c link_error_printf will be called to emit error messages for each function
2106 * that is in the recursion cycle. In addition,
2107 * \c gl_shader_program::LinkStatus will be set to false.
2110 detect_recursion_linked(struct gl_shader_program
*prog
,
2111 exec_list
*instructions
);
2114 * Make a clone of each IR instruction in a list
2116 * \param in List of IR instructions that are to be cloned
2117 * \param out List to hold the cloned instructions
2120 clone_ir_list(void *mem_ctx
, exec_list
*out
, const exec_list
*in
);
2123 _mesa_glsl_initialize_variables(exec_list
*instructions
,
2124 struct _mesa_glsl_parse_state
*state
);
2127 _mesa_glsl_initialize_functions(_mesa_glsl_parse_state
*state
);
2130 _mesa_glsl_initialize_builtin_functions();
2132 extern ir_function_signature
*
2133 _mesa_glsl_find_builtin_function(_mesa_glsl_parse_state
*state
,
2134 const char *name
, exec_list
*actual_parameters
);
2137 _mesa_glsl_release_functions(void);
2140 _mesa_glsl_release_builtin_functions(void);
2143 reparent_ir(exec_list
*list
, void *mem_ctx
);
2145 struct glsl_symbol_table
;
2148 import_prototypes(const exec_list
*source
, exec_list
*dest
,
2149 struct glsl_symbol_table
*symbols
, void *mem_ctx
);
2152 ir_has_call(ir_instruction
*ir
);
2155 do_set_program_inouts(exec_list
*instructions
, struct gl_program
*prog
,
2156 GLenum shader_type
);
2159 prototype_string(const glsl_type
*return_type
, const char *name
,
2160 exec_list
*parameters
);
2163 #endif /* __cplusplus */
2165 extern void _mesa_print_ir(struct exec_list
*instructions
,
2166 struct _mesa_glsl_parse_state
*state
);
2173 vertices_per_prim(GLenum prim
);