#include "ir_hierarchical_visitor.h"
#include "main/mtypes.h"
+#ifdef __cplusplus
+
/**
* \defgroup IR Intermediate representation nodes
*
ir_type_return,
ir_type_swizzle,
ir_type_texture,
+ ir_type_emit_vertex,
+ ir_type_end_primitive,
ir_type_max /**< maximum ir_type enum number, for validation */
};
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);
+
protected:
ir_instruction()
{
ir_var_function_inout,
ir_var_const_in, /**< "in" param that must be a constant expression */
ir_var_system_value, /**< Ex: front-face, instance-id, etc. */
- ir_var_temporary /**< Temporary variable generated during compilation. */
+ ir_var_temporary, /**< Temporary variable generated during compilation. */
+ 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,
};
/**
int swizzle;
};
+
+/**
+ * Get the string value for an interpolation qualifier
+ *
+ * \return The string that would be used in a shader to specify \c
+ * mode will be returned.
+ *
+ * This function is used to generate error messages of the form "shader
+ * uses %s interpolation qualifier", so in the case where there is no
+ * interpolation qualifier, it returns "no".
+ *
+ * This function should only be used on a shader input or output variable.
+ */
+const char *interpolation_string(unsigned interpolation);
+
+
class ir_variable : public ir_instruction {
public:
ir_variable(const struct glsl_type *, const char *, ir_variable_mode);
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
- /**
- * Get the string value for the interpolation qualifier
- *
- * \return The string that would be used in a shader to specify \c
- * mode will be returned.
- *
- * This function is used to generate error messages of the form "shader
- * uses %s interpolation qualifier", so in the case where there is no
- * interpolation qualifier, it returns "no".
- *
- * This function should only be used on a shader input or output variable.
- */
- const char *interpolation_string() const;
-
/**
* Determine how this variable should be interpolated based on its
* interpolation qualifier (if present), whether it is gl_Color or
|| (t->is_array() && t->fields.array == this->interface_type);
}
+ /**
+ * Set this->interface_type on a newly created variable.
+ */
+ void init_interface_type(const struct glsl_type *type)
+ {
+ assert(this->interface_type == NULL);
+ this->interface_type = type;
+ if (this->is_interface_instance()) {
+ this->max_ifc_array_access =
+ rzalloc_array(this, unsigned, type->length);
+ }
+ }
+
+ /**
+ * Change this->interface_type on a variable that previously had a
+ * different, but compatible, interface_type. This is used during linking
+ * to set the size of arrays in interface blocks.
+ */
+ void change_interface_type(const struct glsl_type *type)
+ {
+ if (this->max_ifc_array_access != NULL) {
+ /* max_ifc_array_access has already been allocated, so make sure the
+ * new interface has the same number of fields as the old one.
+ */
+ assert(this->interface_type->length == type->length);
+ }
+ this->interface_type = type;
+ }
+
+ /**
+ * Change this->interface_type on a variable that previously had a
+ * different, and incompatible, interface_type. This is used during
+ * compilation to handle redeclaration of the built-in gl_PerVertex
+ * interface block.
+ */
+ void reinit_interface_type(const struct glsl_type *type)
+ {
+ if (this->max_ifc_array_access != NULL) {
+#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
+ * zero.
+ */
+ for (unsigned i = 0; i < this->interface_type->length; i++)
+ assert(this->max_ifc_array_access[i] == 0);
+#endif
+ ralloc_free(this->max_ifc_array_access);
+ this->max_ifc_array_access = NULL;
+ }
+ this->interface_type = NULL;
+ init_interface_type(type);
+ }
+
+ const glsl_type *get_interface_type() const
+ {
+ return this->interface_type;
+ }
+
/**
* Declared type of the variable
*/
*/
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
+ * interface block is an array, max_ifc_array_access[i] is the maximum
+ * array element of that member that has been accessed. If the ith member
+ * of the interface block is not an array, max_ifc_array_access[i] is
+ * unused.
+ *
+ * For variables whose type is not an interface block, this pointer is
+ * NULL.
+ */
+ unsigned *max_ifc_array_access;
+
/**
* Is the variable read-only?
*
*/
unsigned assigned: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;
+
/**
* Storage class of the variable.
*
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;
+
/**
* Does this variable have an initializer?
*
*/
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;
+
/**
* \brief Layout qualifier for gl_FragDepth.
*
*
* - 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.
*/
int index;
+ /**
+ * Initial binding point for a sampler or UBO.
+ *
+ * For array types, this represents the binding point for the first element.
+ */
+ int binding;
+
+ /**
+ * Location an atomic counter is stored at.
+ */
+ struct {
+ unsigned buffer_index;
+ unsigned offset;
+ } atomic;
+
/**
* Built-in state that backs this uniform
*
*/
ir_constant *constant_initializer;
+private:
/**
* For variables that are in an interface block or are an instance of an
* interface block, this is the \c GLSL_TYPE_INTERFACE type for that block.
const glsl_type *interface_type;
};
+/**
+ * A function that returns whether a built-in function is available in the
+ * current shading language (based on version, ES or desktop, and extensions).
+ */
+typedef bool (*builtin_available_predicate)(const _mesa_glsl_parse_state *);
/*@{*/
/**
* an ir_function.
*/
public:
- ir_function_signature(const glsl_type *return_type);
+ ir_function_signature(const glsl_type *return_type,
+ builtin_available_predicate builtin_avail = NULL);
virtual ir_function_signature *clone(void *mem_ctx,
struct hash_table *ht) const;
unsigned is_defined:1;
/** Whether or not this function signature is a built-in. */
- unsigned is_builtin:1;
+ 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;
/** Body of instructions in the function. */
struct exec_list body;
private:
+ /**
+ * A function pointer to a predicate that answers whether a built-in
+ * function is available in the current shader. NULL if not a built-in.
+ */
+ builtin_available_predicate builtin_avail;
+
/** Function of which this signature is one overload. */
class ir_function *_function;
* Find a signature that matches a set of actual parameters, taking implicit
* conversions into account. Also flags whether the match was exact.
*/
- ir_function_signature *matching_signature(const exec_list *actual_param,
+ ir_function_signature *matching_signature(_mesa_glsl_parse_state *state,
+ const exec_list *actual_param,
bool *match_is_exact);
/**
* Find a signature that matches a set of actual parameters, taking implicit
* conversions into account.
*/
- ir_function_signature *matching_signature(const exec_list *actual_param);
+ ir_function_signature *matching_signature(_mesa_glsl_parse_state *state,
+ const exec_list *actual_param);
/**
* Find a signature that exactly matches a set of actual parameters without
* any implicit type conversions.
*/
- ir_function_signature *exact_matching_signature(const exec_list *actual_ps);
+ ir_function_signature *exact_matching_signature(_mesa_glsl_parse_state *state,
+ const exec_list *actual_ps);
/**
* Name of the function.
* 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.
- */
+
+ /**
+ * Value which should be assigned to \c counter before the first iteration
+ * of the loop. Must be non-null whenever \c counter is non-null, and vice
+ * versa.
+ */
+ ir_rvalue *from;
+
+ /**
+ * Value which \c counter should be compared to in order to determine
+ * whether to exit the loop. Must be non-null whenever \c counter is
+ * non-null, and vice versa.
+ */
+ ir_rvalue *to;
+
+ /**
+ * Value which should be added to \c counter at the end of each loop
+ * iteration. Must be non-null whenever \c counter is non-null, and vice
+ * versa.
+ */
ir_rvalue *increment;
+
+ /**
+ * Variable which counts loop iterations. This is a brand new ir_variable
+ * declaration (not a reference to a previously declared ir_variable, as in
+ * ir_dereference_variable).
+ */
ir_variable *counter;
/**
* 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.
+ *
+ * Ignored if \c counter is NULL.
*/
int cmp;
/*@}*/
ir_unop_unpack_half_2x16_split_y,
/*@}*/
+ /**
+ * \name Bit operations, part of ARB_gpu_shader5.
+ */
+ /*@{*/
+ ir_unop_bitfield_reverse,
+ ir_unop_bit_count,
+ ir_unop_find_msb,
+ ir_unop_find_lsb,
+ /*@}*/
+
ir_unop_noise,
/**
ir_binop_add,
ir_binop_sub,
- ir_binop_mul,
+ ir_binop_mul, /**< Floating-point or low 32-bit integer multiply. */
+ ir_binop_imul_high, /**< Calculates the high 32-bits of a 64-bit multiply. */
ir_binop_div,
+ /**
+ * Returns the carry resulting from the addition of the two arguments.
+ */
+ /*@{*/
+ ir_binop_carry,
+ /*@}*/
+
+ /**
+ * Returns the borrow resulting from the subtraction of the second argument
+ * from the first argument.
+ */
+ /*@{*/
+ ir_binop_borrow,
+ /*@}*/
+
/**
* Takes one of two combinations of arguments:
*
ir_binop_pack_half_2x16_split,
/*@}*/
+ /**
+ * \name First half of a lowered bitfieldInsert() operation.
+ *
+ * \see lower_instructions::bitfield_insert_to_bfm_bfi
+ */
+ /*@{*/
+ ir_binop_bfm,
+ /*@}*/
+
/**
* Load a value the size of a given GLSL type from a uniform block.
*
*/
ir_binop_ubo_load,
+ /**
+ * \name Multiplies a number by two to a power, part of ARB_gpu_shader5.
+ */
+ /*@{*/
+ ir_binop_ldexp,
+ /*@}*/
+
+ /**
+ * Extract a scalar from a vector
+ *
+ * operand0 is the vector
+ * operand1 is the index of the field to read from operand0
+ */
+ ir_binop_vector_extract,
+
/**
* A sentinel marking the last of the binary operations.
*/
- ir_last_binop = ir_binop_ubo_load,
+ ir_last_binop = ir_binop_vector_extract,
+
+ /**
+ * \name Fused floating-point multiply-add, part of ARB_gpu_shader5.
+ */
+ /*@{*/
+ ir_triop_fma,
+ /*@}*/
ir_triop_lrp,
+ /**
+ * \name Conditional Select
+ *
+ * A vector conditional select instruction (like ?:, but operating per-
+ * component on vectors).
+ *
+ * \see lower_instructions_visitor::ldexp_to_arith
+ */
+ /*@{*/
+ ir_triop_csel,
+ /*@}*/
+
+ /**
+ * \name Second half of a lowered bitfieldInsert() operation.
+ *
+ * \see lower_instructions::bitfield_insert_to_bfm_bfi
+ */
+ /*@{*/
+ ir_triop_bfi,
+ /*@}*/
+
+ ir_triop_bitfield_extract,
+
+ /**
+ * Generate a value with one field of a vector changed
+ *
+ * operand0 is the vector
+ * operand1 is the value to write into the vector result
+ * operand2 is the index in operand0 to be modified
+ */
+ ir_triop_vector_insert,
+
/**
* A sentinel marking the last of the ternary operations.
*/
- ir_last_triop = ir_triop_lrp,
+ ir_last_triop = ir_triop_vector_insert,
+
+ ir_quadop_bitfield_insert,
ir_quadop_vector,
+ /**
+ * A sentinel marking the last of the ternary operations.
+ */
+ ir_last_quadop = ir_quadop_vector,
+
/**
* A sentinel marking the last of all operations.
*/
*/
ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1);
+ /**
+ * Constructor for ternary operation expressions
+ */
+ ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1, ir_rvalue *op2);
+
virtual ir_expression *as_expression()
{
return this;
}
+ virtual bool equals(ir_instruction *ir);
+
virtual ir_expression *clone(void *mem_ctx, struct hash_table *ht) const;
/**
ir_type = ir_type_call;
assert(callee->return_type != NULL);
actual_parameters->move_nodes_to(& this->actual_parameters);
- this->use_builtin = callee->is_builtin;
+ this->use_builtin = callee->is_builtin();
}
virtual ir_call *clone(void *mem_ctx, struct hash_table *ht) const;
{
ir_type = ir_type_unset;
}
+
+public:
+ virtual ir_jump *as_jump()
+ {
+ return this;
+ }
};
class ir_return : public ir_jump {
ir_txf, /**< Texel fetch with explicit LOD */
ir_txf_ms, /**< Multisample texture fetch */
ir_txs, /**< Texture size */
- ir_lod /**< Texture lod query */
+ ir_lod, /**< Texture lod query */
+ ir_tg4, /**< Texture gather */
+ ir_query_levels /**< Texture levels query */
};
* <type> <sampler> <coordinate> <sample_index>)
* (txs <type> <sampler> <lod>)
* (lod <type> <sampler> <coordinate>)
+ * (tg4 <type> <sampler> <coordinate> <offset> <component>)
+ * (query_levels <type> <sampler>)
*/
class ir_texture : public ir_rvalue {
public:
shadow_comparitor(NULL), offset(NULL)
{
this->ir_type = ir_type_texture;
+ memset(&lod_info, 0, sizeof(lod_info));
}
virtual ir_texture *clone(void *mem_ctx, struct hash_table *) const;
v->visit(this);
}
+ virtual ir_texture *as_texture()
+ {
+ return this;
+ }
+
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+ virtual bool equals(ir_instruction *ir);
+
/**
* Return a string representing the ir_texture_opcode.
*/
ir_rvalue *lod; /**< Floating point LOD */
ir_rvalue *bias; /**< Floating point LOD bias */
ir_rvalue *sample_index; /**< MSAA sample index */
+ ir_rvalue *component; /**< Gather component selector */
struct {
ir_rvalue *dPdx; /**< Partial derivative of coordinate wrt X */
ir_rvalue *dPdy; /**< Partial derivative of coordinate wrt Y */
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+ virtual bool equals(ir_instruction *ir);
+
bool is_lvalue() const
{
return val->is_lvalue() && !mask.has_duplicates;
return this;
}
+ virtual bool equals(ir_instruction *ir);
+
/**
* Get the variable that is ultimately referenced by an r-value
*/
return this;
}
+ virtual bool equals(ir_instruction *ir);
+
/**
* Get the variable that is ultimately referenced by an r-value
*/
class ir_constant : public ir_rvalue {
public:
ir_constant(const struct glsl_type *type, const ir_constant_data *data);
- ir_constant(bool b);
- ir_constant(unsigned int u);
- ir_constant(int i);
- ir_constant(float f);
+ ir_constant(bool b, unsigned vector_elements=1);
+ ir_constant(unsigned int u, unsigned vector_elements=1);
+ ir_constant(int i, unsigned vector_elements=1);
+ ir_constant(float f, unsigned vector_elements=1);
/**
* Construct an ir_constant from a list of ir_constant values
virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+ virtual bool equals(ir_instruction *ir);
+
/**
* Get a particular component of a constant as a specific type
*
/*@}*/
+/**
+ * IR instruction to emit a vertex in a geometry shader.
+ */
+class ir_emit_vertex : public ir_instruction {
+public:
+ ir_emit_vertex()
+ {
+ ir_type = ir_type_emit_vertex;
+ }
+
+ virtual void accept(ir_visitor *v)
+ {
+ v->visit(this);
+ }
+
+ virtual ir_emit_vertex *clone(void *mem_ctx, struct hash_table *) const
+ {
+ return new(mem_ctx) ir_emit_vertex();
+ }
+
+ virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+};
+
+/**
+ * IR instruction to complete the current primitive and start a new one in a
+ * geometry shader.
+ */
+class ir_end_primitive : public ir_instruction {
+public:
+ ir_end_primitive()
+ {
+ ir_type = ir_type_end_primitive;
+ }
+
+ virtual void accept(ir_visitor *v)
+ {
+ v->visit(this);
+ }
+
+ virtual ir_end_primitive *clone(void *mem_ctx, struct hash_table *) const
+ {
+ return new(mem_ctx) ir_end_primitive();
+ }
+
+ virtual ir_visitor_status accept(ir_hierarchical_visitor *);
+};
+
/**
* Apply a visitor to each IR node in a list
*/
extern void
_mesa_glsl_initialize_functions(_mesa_glsl_parse_state *state);
+extern void
+_mesa_glsl_initialize_builtin_functions();
+
+extern ir_function_signature *
+_mesa_glsl_find_builtin_function(_mesa_glsl_parse_state *state,
+ const char *name, exec_list *actual_parameters);
+
extern void
_mesa_glsl_release_functions(void);
+extern void
+_mesa_glsl_release_builtin_functions(void);
+
extern void
reparent_ir(exec_list *list, void *mem_ctx);
extern void
do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
- bool is_fragment_shader);
+ GLenum shader_type);
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,
+ struct _mesa_glsl_parse_state *state);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+unsigned
+vertices_per_prim(GLenum prim);
+
#endif /* IR_H */
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