ir_type_max /**< maximum ir_type enum number, for validation */
};
+
/**
* Base class of all IR instructions
*/
/** ir_print_visitor helper for debugging. */
void print(void) const;
+ void fprint(FILE *f) const;
virtual void accept(ir_visitor *) = 0;
virtual ir_visitor_status accept(ir_hierarchical_visitor *) = 0;
virtual class ir_return * as_return() { return NULL; }
virtual class ir_if * as_if() { return NULL; }
virtual class ir_swizzle * as_swizzle() { return NULL; }
+ virtual class ir_texture * as_texture() { return NULL; }
virtual class ir_constant * as_constant() { return NULL; }
virtual class ir_discard * as_discard() { return NULL; }
virtual class ir_jump * as_jump() { return NULL; }
/*@}*/
+ /**
+ * IR equality method: Return true if the referenced instruction would
+ * return the same value as this one.
+ *
+ * This intended to be used for CSE and algebraic optimizations, on rvalues
+ * in particular. No support for other instruction types (assignments,
+ * jumps, calls, etc.) is planned.
+ */
+ virtual bool equals(ir_instruction *ir, enum ir_node_type ignore = ir_type_unset);
+
protected:
ir_instruction()
{
*/
virtual bool is_basis() const;
+ /**
+ * Determine if an r-value is an unsigned integer constant which can be
+ * stored in 16 bits.
+ *
+ * \sa ir_constant::is_uint16_constant.
+ */
+ virtual bool is_uint16_constant() const { return false; }
/**
* Return a generic value of error_type.
ir_var_mode_count /**< Number of variable modes */
};
+/**
+ * Enum keeping track of how a variable was declared. For error checking of
+ * the gl_PerVertex redeclaration rules.
+ */
+enum ir_var_declaration_type {
+ /**
+ * Normal declaration (for most variables, this means an explicit
+ * declaration. Exception: temporaries are always implicitly declared, but
+ * they still use ir_var_declared_normally).
+ *
+ * Note: an ir_variable that represents a named interface block uses
+ * ir_var_declared_normally.
+ */
+ ir_var_declared_normally = 0,
+
+ /**
+ * Variable was explicitly declared (or re-declared) in an unnamed
+ * interface block.
+ */
+ ir_var_declared_in_block,
+
+ /**
+ * Variable is an implicitly declared built-in that has not been explicitly
+ * re-declared by the shader.
+ */
+ ir_var_declared_implicitly,
+};
+
/**
* \brief Layout qualifiers for gl_FragDepth.
*
*/
inline bool is_in_uniform_block() const
{
- return this->mode == ir_var_uniform && this->interface_type != NULL;
+ return this->data.mode == ir_var_uniform && this->interface_type != NULL;
}
/**
void reinit_interface_type(const struct glsl_type *type)
{
if (this->max_ifc_array_access != NULL) {
-#ifndef _NDEBUG
+#ifndef NDEBUG
/* Redeclaring gl_PerVertex is only allowed if none of the built-ins
* it defines have been accessed yet; so it's safe to throw away the
* old max_ifc_array_access pointer, since all of its values are
*/
const char *name;
- /**
- * Highest element accessed with a constant expression array index
- *
- * Not used for non-array variables.
- */
- unsigned max_array_access;
-
/**
* For variables which satisfy the is_interface_instance() predicate, this
* points to an array of integers such that if the ith member of the
*/
unsigned *max_ifc_array_access;
- /**
- * Is the variable read-only?
- *
- * This is set for variables declared as \c const, shader inputs,
- * and uniforms.
- */
- unsigned read_only:1;
- unsigned centroid:1;
- unsigned invariant:1;
-
- /**
- * Has this variable been used for reading or writing?
- *
- * Several GLSL semantic checks require knowledge of whether or not a
- * variable has been used. For example, it is an error to redeclare a
- * variable as invariant after it has been used.
- *
- * This is only maintained in the ast_to_hir.cpp path, not in
- * Mesa's fixed function or ARB program paths.
- */
- unsigned used:1;
-
- /**
- * Has this variable been statically assigned?
- *
- * This answers whether the variable was assigned in any path of
- * the shader during ast_to_hir. This doesn't answer whether it is
- * still written after dead code removal, nor is it maintained in
- * non-ast_to_hir.cpp (GLSL parsing) paths.
- */
- unsigned assigned:1;
-
- /**
- * Storage class of the variable.
- *
- * \sa ir_variable_mode
- */
- unsigned mode:4;
-
- /**
- * Interpolation mode for shader inputs / outputs
- *
- * \sa ir_variable_interpolation
- */
- unsigned interpolation:2;
-
- /**
- * \name ARB_fragment_coord_conventions
- * @{
- */
- unsigned origin_upper_left:1;
- unsigned pixel_center_integer:1;
- /*@}*/
+ struct ir_variable_data {
- /**
- * Was the location explicitly set in the shader?
- *
- * If the location is explicitly set in the shader, it \b cannot be changed
- * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
- * no effect).
- */
- unsigned explicit_location:1;
- unsigned explicit_index:1;
+ /**
+ * Is the variable read-only?
+ *
+ * This is set for variables declared as \c const, shader inputs,
+ * and uniforms.
+ */
+ unsigned read_only:1;
+ unsigned centroid:1;
+ unsigned sample:1;
+ unsigned invariant:1;
+
+ /**
+ * Has this variable been used for reading or writing?
+ *
+ * Several GLSL semantic checks require knowledge of whether or not a
+ * variable has been used. For example, it is an error to redeclare a
+ * variable as invariant after it has been used.
+ *
+ * This is only maintained in the ast_to_hir.cpp path, not in
+ * Mesa's fixed function or ARB program paths.
+ */
+ unsigned used:1;
+
+ /**
+ * Has this variable been statically assigned?
+ *
+ * This answers whether the variable was assigned in any path of
+ * the shader during ast_to_hir. This doesn't answer whether it is
+ * still written after dead code removal, nor is it maintained in
+ * non-ast_to_hir.cpp (GLSL parsing) paths.
+ */
+ unsigned assigned:1;
- /**
- * Was an initial binding explicitly set in the shader?
- *
- * If so, constant_value contains an integer ir_constant representing the
- * initial binding point.
- */
- unsigned explicit_binding:1;
+ /**
+ * Enum indicating how the variable was declared. See
+ * ir_var_declaration_type.
+ *
+ * This is used to detect certain kinds of illegal variable redeclarations.
+ */
+ unsigned how_declared:2;
- /**
- * Does this variable have an initializer?
- *
- * This is used by the linker to cross-validiate initializers of global
- * variables.
- */
- unsigned has_initializer:1;
+ /**
+ * Storage class of the variable.
+ *
+ * \sa ir_variable_mode
+ */
+ unsigned mode:4;
- /**
- * Is this variable a generic output or input that has not yet been matched
- * up to a variable in another stage of the pipeline?
- *
- * This is used by the linker as scratch storage while assigning locations
- * to generic inputs and outputs.
- */
- unsigned is_unmatched_generic_inout:1;
+ /**
+ * Interpolation mode for shader inputs / outputs
+ *
+ * \sa ir_variable_interpolation
+ */
+ unsigned interpolation:2;
- /**
- * If non-zero, then this variable may be packed along with other variables
- * into a single varying slot, so this offset should be applied when
- * accessing components. For example, an offset of 1 means that the x
- * component of this variable is actually stored in component y of the
- * location specified by \c location.
- */
- unsigned location_frac:2;
+ /**
+ * \name ARB_fragment_coord_conventions
+ * @{
+ */
+ unsigned origin_upper_left:1;
+ unsigned pixel_center_integer:1;
+ /*@}*/
+
+ /**
+ * Was the location explicitly set in the shader?
+ *
+ * If the location is explicitly set in the shader, it \b cannot be changed
+ * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
+ * no effect).
+ */
+ unsigned explicit_location:1;
+ unsigned explicit_index:1;
+
+ /**
+ * Was an initial binding explicitly set in the shader?
+ *
+ * If so, constant_value contains an integer ir_constant representing the
+ * initial binding point.
+ */
+ unsigned explicit_binding:1;
- /**
- * Non-zero if this variable was created by lowering a named interface
- * block which was not an array.
- *
- * Note that this variable and \c from_named_ifc_block_array will never
- * both be non-zero.
- */
- unsigned from_named_ifc_block_nonarray:1;
+ /**
+ * Does this variable have an initializer?
+ *
+ * This is used by the linker to cross-validiate initializers of global
+ * variables.
+ */
+ unsigned has_initializer:1;
+
+ /**
+ * Is this variable a generic output or input that has not yet been matched
+ * up to a variable in another stage of the pipeline?
+ *
+ * This is used by the linker as scratch storage while assigning locations
+ * to generic inputs and outputs.
+ */
+ unsigned is_unmatched_generic_inout:1;
+
+ /**
+ * If non-zero, then this variable may be packed along with other variables
+ * into a single varying slot, so this offset should be applied when
+ * accessing components. For example, an offset of 1 means that the x
+ * component of this variable is actually stored in component y of the
+ * location specified by \c location.
+ */
+ unsigned location_frac:2;
+
+ /**
+ * Non-zero if this variable was created by lowering a named interface
+ * block which was not an array.
+ *
+ * Note that this variable and \c from_named_ifc_block_array will never
+ * both be non-zero.
+ */
+ unsigned from_named_ifc_block_nonarray:1;
+
+ /**
+ * Non-zero if this variable was created by lowering a named interface
+ * block which was an array.
+ *
+ * Note that this variable and \c from_named_ifc_block_nonarray will never
+ * both be non-zero.
+ */
+ unsigned from_named_ifc_block_array:1;
- /**
- * Non-zero if this variable was created by lowering a named interface
- * block which was an array.
- *
- * Note that this variable and \c from_named_ifc_block_nonarray will never
- * both be non-zero.
- */
- unsigned from_named_ifc_block_array:1;
+ /**
+ * \brief Layout qualifier for gl_FragDepth.
+ *
+ * This is not equal to \c ir_depth_layout_none if and only if this
+ * variable is \c gl_FragDepth and a layout qualifier is specified.
+ */
+ ir_depth_layout depth_layout;
+
+ /**
+ * Storage location of the base of this variable
+ *
+ * The precise meaning of this field depends on the nature of the variable.
+ *
+ * - Vertex shader input: one of the values from \c gl_vert_attrib.
+ * - Vertex shader output: one of the values from \c gl_varying_slot.
+ * - Geometry shader input: one of the values from \c gl_varying_slot.
+ * - Geometry shader output: one of the values from \c gl_varying_slot.
+ * - Fragment shader input: one of the values from \c gl_varying_slot.
+ * - Fragment shader output: one of the values from \c gl_frag_result.
+ * - Uniforms: Per-stage uniform slot number for default uniform block.
+ * - Uniforms: Index within the uniform block definition for UBO members.
+ * - Other: This field is not currently used.
+ *
+ * If the variable is a uniform, shader input, or shader output, and the
+ * slot has not been assigned, the value will be -1.
+ */
+ int location;
- /**
- * \brief Layout qualifier for gl_FragDepth.
- *
- * This is not equal to \c ir_depth_layout_none if and only if this
- * variable is \c gl_FragDepth and a layout qualifier is specified.
- */
- ir_depth_layout depth_layout;
+ /**
+ * output index for dual source blending.
+ */
+ int index;
- /**
- * Storage location of the base of this variable
- *
- * The precise meaning of this field depends on the nature of the variable.
- *
- * - Vertex shader input: one of the values from \c gl_vert_attrib.
- * - Vertex shader output: one of the values from \c gl_varying_slot.
- * - Geometry shader input: one of the values from \c gl_varying_slot.
- * - Geometry shader output: one of the values from \c gl_varying_slot.
- * - Fragment shader input: one of the values from \c gl_varying_slot.
- * - Fragment shader output: one of the values from \c gl_frag_result.
- * - Uniforms: Per-stage uniform slot number for default uniform block.
- * - Uniforms: Index within the uniform block definition for UBO members.
- * - Other: This field is not currently used.
- *
- * If the variable is a uniform, shader input, or shader output, and the
- * slot has not been assigned, the value will be -1.
- */
- int location;
+ /**
+ * Initial binding point for a sampler or UBO.
+ *
+ * For array types, this represents the binding point for the first element.
+ */
+ int binding;
- /**
- * output index for dual source blending.
- */
- int index;
+ /**
+ * Location an atomic counter is stored at.
+ */
+ struct {
+ unsigned buffer_index;
+ unsigned offset;
+ } atomic;
- /**
- * Initial binding point for a sampler or UBO.
- *
- * For array types, this represents the binding point for the first element.
- */
- int binding;
+ /**
+ * ARB_shader_image_load_store qualifiers.
+ */
+ struct {
+ bool read_only; /**< "readonly" qualifier. */
+ bool write_only; /**< "writeonly" qualifier. */
+ bool coherent;
+ bool _volatile;
+ bool restrict_flag;
+
+ /** Image internal format if specified explicitly, otherwise GL_NONE. */
+ GLenum format;
+ } image;
+
+ /**
+ * Highest element accessed with a constant expression array index
+ *
+ * Not used for non-array variables.
+ */
+ unsigned max_array_access;
- /**
- * Location an atomic counter is stored at.
- */
- struct {
- unsigned buffer_index;
- unsigned offset;
- } atomic;
+ } data;
/**
* Built-in state that backs this uniform
/** Whether or not this function signature is a built-in. */
bool is_builtin() const;
+ /**
+ * Whether or not this function is an intrinsic to be implemented
+ * by the driver.
+ */
+ bool is_intrinsic;
+
/** Whether or not a built-in is available for this shader. */
bool is_builtin_available(const _mesa_glsl_parse_state *state) const;
this->signatures.push_tail(sig);
}
- /**
- * Get an iterator for the set of function signatures
- */
- exec_list_iterator iterator()
- {
- return signatures.iterator();
- }
-
/**
* Find a signature that matches a set of actual parameters, taking implicit
* conversions into account. Also flags whether the match was exact.
return this;
}
- /**
- * Get an iterator for the instructions of the loop body
- */
- exec_list_iterator iterator()
- {
- return body_instructions.iterator();
- }
-
/** List of ir_instruction that make up the body of the loop. */
exec_list body_instructions;
-
- /**
- * \name Loop counter and controls
- *
- * Represents a loop like a FORTRAN \c do-loop.
- *
- * \note
- * If \c from and \c to are the same value, the loop will execute once.
- */
- /*@{*/
- ir_rvalue *from; /** Value of the loop counter on the first
- * iteration of the loop.
- */
- ir_rvalue *to; /** Value of the loop counter on the last
- * iteration of the loop.
- */
- ir_rvalue *increment;
- ir_variable *counter;
-
- /**
- * Comparison operation in the loop terminator.
- *
- * If any of the loop control fields are non-\c NULL, this field must be
- * one of \c ir_binop_less, \c ir_binop_greater, \c ir_binop_lequal,
- * \c ir_binop_gequal, \c ir_binop_equal, or \c ir_binop_nequal.
- */
- int cmp;
- /*@}*/
};
return this;
}
+ virtual bool equals(ir_instruction *ir, enum ir_node_type ignore = ir_type_unset);
+
virtual ir_expression *clone(void *mem_ctx, struct hash_table *ht) const;
/**
? this->type->vector_elements : get_num_operands(operation);
}
+ /**
+ * Return whether the expression operates on vectors horizontally.
+ */
+ bool is_horizontal() const
+ {
+ return operation == ir_binop_all_equal ||
+ operation == ir_binop_any_nequal ||
+ operation == ir_unop_any ||
+ operation == ir_binop_dot ||
+ operation == ir_quadop_vector;
+ }
+
/**
* Return a string representing this expression's operator.
*/
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
- /**
- * Get an iterator for the set of acutal parameters
- */
- exec_list_iterator iterator()
- {
- return actual_parameters.iterator();
- }
-
/**
* Get the name of the function being called.
*/
v->visit(this);
}
+ virtual ir_texture *as_texture()
+ {
+ return this;
+ }
+
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+ virtual bool equals(ir_instruction *ir, enum ir_node_type ignore = ir_type_unset);
+
/**
* Return a string representing the ir_texture_opcode.
*/
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+ virtual bool equals(ir_instruction *ir, enum ir_node_type ignore = ir_type_unset);
+
bool is_lvalue() const
{
return val->is_lvalue() && !mask.has_duplicates;
* Get the variable that is ultimately referenced by an r-value
*/
virtual ir_variable *variable_referenced() const = 0;
-
- /**
- * Get the constant that is ultimately referenced by an r-value,
- * in a constant expression evaluation context.
- *
- * The offset is used when the reference is to a specific column of
- * a matrix.
- */
- virtual void constant_referenced(struct hash_table *variable_context, ir_constant *&store, int &offset) const = 0;
};
return this;
}
+ virtual bool equals(ir_instruction *ir, enum ir_node_type ignore = ir_type_unset);
+
/**
* Get the variable that is ultimately referenced by an r-value
*/
return this->var;
}
- /**
- * Get the constant that is ultimately referenced by an r-value,
- * in a constant expression evaluation context.
- *
- * The offset is used when the reference is to a specific column of
- * a matrix.
- */
- virtual void constant_referenced(struct hash_table *variable_context, ir_constant *&store, int &offset) const;
-
virtual ir_variable *whole_variable_referenced()
{
/* ir_dereference_variable objects always dereference the entire
return this;
}
+ virtual bool equals(ir_instruction *ir, enum ir_node_type ignore = ir_type_unset);
+
/**
* Get the variable that is ultimately referenced by an r-value
*/
return this->array->variable_referenced();
}
- /**
- * Get the constant that is ultimately referenced by an r-value,
- * in a constant expression evaluation context.
- *
- * The offset is used when the reference is to a specific column of
- * a matrix.
- */
- virtual void constant_referenced(struct hash_table *variable_context, ir_constant *&store, int &offset) const;
-
virtual void accept(ir_visitor *v)
{
v->visit(this);
return this->record->variable_referenced();
}
- /**
- * Get the constant that is ultimately referenced by an r-value,
- * in a constant expression evaluation context.
- *
- * The offset is used when the reference is to a specific column of
- * a matrix.
- */
- virtual void constant_referenced(struct hash_table *variable_context, ir_constant *&store, int &offset) const;
-
virtual void accept(ir_visitor *v)
{
v->visit(this);
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+ virtual bool equals(ir_instruction *ir, enum ir_node_type ignore = ir_type_unset);
+
/**
* Get a particular component of a constant as a specific type
*
*/
bool has_value(const ir_constant *) const;
+ /**
+ * Return true if this ir_constant represents the given value.
+ *
+ * For vectors, this checks that each component is the given value.
+ */
+ virtual bool is_value(float f, int i) const;
virtual bool is_zero() const;
virtual bool is_one() const;
virtual bool is_negative_one() const;
virtual bool is_basis() const;
+ /**
+ * Return true for constants that could be stored as 16-bit unsigned values.
+ *
+ * Note that this will return true even for signed integer ir_constants, as
+ * long as the value is non-negative and fits in 16-bits.
+ */
+ virtual bool is_uint16_constant() const;
+
/**
* Value of the constant.
*
ir_constant(void);
};
-/*@}*/
-
/**
* IR instruction to emit a vertex in a geometry shader.
*/
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
};
+/*@}*/
+
/**
* Apply a visitor to each IR node in a list
*/
_mesa_glsl_find_builtin_function(_mesa_glsl_parse_state *state,
const char *name, exec_list *actual_parameters);
+extern gl_shader *
+_mesa_glsl_get_builtin_function_shader(void);
+
extern void
_mesa_glsl_release_functions(void);
extern void
do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
- GLenum shader_type);
+ gl_shader_stage shader_stage);
extern char *
prototype_string(const glsl_type *return_type, const char *name,
exec_list *parameters);
+const char *
+mode_string(const ir_variable *var);
+
extern "C" {
#endif /* __cplusplus */
-extern void _mesa_print_ir(struct exec_list *instructions,
+extern void _mesa_print_ir(FILE *f, struct exec_list *instructions,
struct _mesa_glsl_parse_state *state);
+extern void
+fprint_ir(FILE *f, const void *instruction);
+
#ifdef __cplusplus
} /* extern "C" */
#endif
projects / mesa.git / blobdiff