X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fglsl%2Fir.h;h=ff47b3a5a80b00da9e20371dffceb834a49f3422;hb=7a7b44b329c8090969587d1dab23721d47f82e4a;hp=50a9d6e1991909da16f2f8dcfdd5fafd83cc1340;hpb=636d01bd61cac83e13c3c64874e7e34e828ca93a;p=mesa.git diff --git a/src/glsl/ir.h b/src/glsl/ir.h index 50a9d6e1991..ff47b3a5a80 100644 --- a/src/glsl/ir.h +++ b/src/glsl/ir.h @@ -34,6 +34,7 @@ #include "list.h" #include "ir_visitor.h" #include "ir_hierarchical_visitor.h" +#include "main/mtypes.h" /** * \defgroup IR Intermediate representation nodes @@ -87,7 +88,16 @@ enum ir_node_type { class ir_instruction : public exec_node { public: enum ir_node_type ir_type; - const struct glsl_type *type; + + /** + * GCC 4.7+ and clang warn when deleting an ir_instruction unless + * there's a virtual destructor present. Because we almost + * universally use ralloc for our memory management of + * ir_instructions, the destructor doesn't need to do any work. + */ + virtual ~ir_instruction() + { + } /** ir_print_visitor helper for debugging. */ void print(void) const; @@ -126,16 +136,27 @@ protected: ir_instruction() { ir_type = ir_type_unset; - type = NULL; } }; +/** + * The base class for all "values"/expression trees. + */ class ir_rvalue : public ir_instruction { public: - virtual ir_rvalue *clone(void *mem_ctx, struct hash_table *) const = 0; + const struct glsl_type *type; + + virtual ir_rvalue *clone(void *mem_ctx, struct hash_table *) const; + + virtual void accept(ir_visitor *v) + { + v->visit(this); + } + + virtual ir_visitor_status accept(ir_hierarchical_visitor *); - virtual ir_constant *constant_expression_value() = 0; + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual ir_rvalue * as_rvalue() { @@ -144,7 +165,7 @@ public: ir_rvalue *as_rvalue_to_saturate(); - virtual bool is_lvalue() + virtual bool is_lvalue() const { return false; } @@ -152,7 +173,7 @@ public: /** * Get the variable that is ultimately referenced by an r-value */ - virtual ir_variable *variable_referenced() + virtual ir_variable *variable_referenced() const { return NULL; } @@ -180,7 +201,8 @@ public: * for vector and scalar types that have all elements set to the value * zero (or \c false for booleans). * - * \sa ir_constant::has_value, ir_rvalue::is_one, ir_rvalue::is_negative_one + * \sa ir_constant::has_value, ir_rvalue::is_one, ir_rvalue::is_negative_one, + * ir_constant::is_basis */ virtual bool is_zero() const; @@ -192,7 +214,8 @@ public: * for vector and scalar types that have all elements set to the value * one (or \c true for booleans). * - * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_negative_one + * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_negative_one, + * ir_constant::is_basis */ virtual bool is_one() const; @@ -202,12 +225,35 @@ public: * The base implementation of this function always returns \c false. The * \c ir_constant class over-rides this function to return \c true \b only * for vector and scalar types that have all elements set to the value - * negative one. For boolean times, the result is always \c false. + * negative one. For boolean types, the result is always \c false. * * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_one + * ir_constant::is_basis */ virtual bool is_negative_one() const; + /** + * Determine if an r-value is a basis vector + * + * The base implementation of this function always returns \c false. The + * \c ir_constant class over-rides this function to return \c true \b only + * for vector and scalar types that have one element set to the value one, + * and the other elements set to the value zero. For boolean types, the + * result is always \c false. + * + * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_one, + * is_constant::is_negative_one + */ + virtual bool is_basis() const; + + + /** + * Return a generic value of error_type. + * + * Allocation will be performed with 'mem_ctx' as ralloc owner. + */ + static ir_rvalue *error_value(void *mem_ctx); + protected: ir_rvalue(); }; @@ -219,24 +265,20 @@ protected: enum ir_variable_mode { ir_var_auto = 0, /**< Function local variables and globals. */ ir_var_uniform, /**< Variable declared as a uniform. */ - ir_var_in, - ir_var_out, - ir_var_inout, + ir_var_shader_in, + ir_var_shader_out, + ir_var_function_in, + ir_var_function_out, + 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. */ }; -enum ir_variable_interpolation { - ir_var_smooth = 0, - ir_var_flat, - ir_var_noperspective -}; - /** * \brief Layout qualifiers for gl_FragDepth. * - * The AMD_conservative_depth extension allows gl_FragDepth to be redeclared + * The AMD/ARB_conservative_depth extensions allow gl_FragDepth to be redeclared * with a layout qualifier. */ enum ir_depth_layout { @@ -288,20 +330,40 @@ public: * \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; /** - * Calculate the number of slots required to hold this variable + * Determine how this variable should be interpolated based on its + * interpolation qualifier (if present), whether it is gl_Color or + * gl_SecondaryColor, and whether flatshading is enabled in the current GL + * state. * - * This is used to determine how many uniform or varying locations a variable - * occupies. The count is in units of floating point components. + * The return value will always be either INTERP_QUALIFIER_SMOOTH, + * INTERP_QUALIFIER_NOPERSPECTIVE, or INTERP_QUALIFIER_FLAT. */ - unsigned component_slots() const; + glsl_interp_qualifier determine_interpolation_mode(bool flat_shade); /** - * Delcared name of the variable + * Determine whether or not a variable is part of a uniform block. + */ + inline bool is_in_uniform_block() const + { + return this->mode == ir_var_uniform && this->interface_type != NULL; + } + + /** + * Declared type of the variable + */ + const struct glsl_type *type; + + /** + * Declared name of the variable */ const char *name; @@ -328,15 +390,28 @@ public: * 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:3; + unsigned mode:4; /** * Interpolation mode for shader inputs / outputs @@ -345,14 +420,6 @@ public: */ unsigned interpolation:2; - /** - * Flag that the whole array is assignable - * - * In GLSL 1.20 and later whole arrays are assignable (and comparable for - * equality). This flag enables this behavior. - */ - unsigned array_lvalue:1; - /** * \name ARB_fragment_coord_conventions * @{ @@ -361,14 +428,6 @@ public: unsigned pixel_center_integer: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; - /** * Was the location explicitly set in the shader? * @@ -377,6 +436,41 @@ public: * no effect). */ unsigned explicit_location:1; + unsigned explicit_index: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; + + /** + * \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 @@ -387,7 +481,8 @@ public: * - Vertex shader output: one of the values from \c gl_vert_result. * - Fragment shader input: one of the values from \c gl_frag_attrib. * - Fragment shader output: one of the values from \c gl_frag_result. - * - Uniforms: Per-stage uniform slot number. + * - 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 @@ -395,6 +490,21 @@ public: */ int location; + /** + * Uniform block number for uniforms. + * + * This index is into the shader's list of uniform blocks, not the + * linked program's merged list. + * + * If the variable is not in a uniform block, the value will be -1. + */ + int uniform_block; + + /** + * output index for dual source blending. + */ + int index; + /** * Built-in state that backs this uniform * @@ -420,6 +530,24 @@ public: * Value assigned in the initializer of a variable declared "const" */ ir_constant *constant_value; + + /** + * Constant expression assigned in the initializer of the variable + * + * \warning + * This field and \c ::constant_value are distinct. Even if the two fields + * refer to constants with the same value, they must point to separate + * objects. + */ + ir_constant *constant_initializer; + + /** + * 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. + * + * \sa ir_variable::location + */ + const glsl_type *interface_type; }; @@ -447,6 +575,13 @@ public: virtual ir_visitor_status accept(ir_hierarchical_visitor *); + /** + * Attempt to evaluate this function as a constant expression, + * given a list of the actual parameters and the variable context. + * Returns NULL for non-built-ins. + */ + ir_constant *constant_expression_value(exec_list *actual_parameters, struct hash_table *variable_context); + /** * Get the name of the function for which this is a signature */ @@ -511,7 +646,25 @@ private: /** Function of which this signature is one overload. */ class ir_function *_function; + /** Function signature of which this one is a prototype clone */ + const ir_function_signature *origin; + friend class ir_function; + + /** + * Helper function to run a list of instructions for constant + * expression evaluation. + * + * The hash table represents the values of the visible variables. + * There are no scoping issues because the table is indexed on + * ir_variable pointers, not variable names. + * + * Returns false if the expression is not constant, true otherwise, + * and the value in *result if result is non-NULL. + */ + bool constant_expression_evaluate_expression_list(const struct exec_list &body, + struct hash_table *variable_context, + ir_constant **result); }; @@ -552,6 +705,13 @@ public: 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. + */ + ir_function_signature *matching_signature(const exec_list *actual_param, + bool *match_is_exact); + /** * Find a signature that matches a set of actual parameters, taking implicit * conversions into account. @@ -696,7 +856,7 @@ public: virtual ir_assignment *clone(void *mem_ctx, struct hash_table *ht) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual void accept(ir_visitor *v) { @@ -766,7 +926,7 @@ public: unsigned write_mask:4; }; -/* Update ir_expression::num_operands() and operator_strs when +/* Update ir_expression::get_num_operands() and operator_strs when * updating this list. */ enum ir_expression_operation { @@ -778,19 +938,24 @@ enum ir_expression_operation { ir_unop_rcp, ir_unop_rsq, ir_unop_sqrt, - ir_unop_exp, /**< Log base e on gentype */ - ir_unop_log, /**< Natural log on gentype */ + ir_unop_exp, /**< Log base e on gentype */ + ir_unop_log, /**< Natural log on gentype */ ir_unop_exp2, ir_unop_log2, - ir_unop_f2i, /**< Float-to-integer conversion. */ - ir_unop_i2f, /**< Integer-to-float conversion. */ - ir_unop_f2b, /**< Float-to-boolean conversion */ - ir_unop_b2f, /**< Boolean-to-float conversion */ - ir_unop_i2b, /**< int-to-boolean conversion */ - ir_unop_b2i, /**< Boolean-to-int conversion */ - ir_unop_u2f, /**< Unsigned-to-float conversion. */ - ir_unop_i2u, /**< Integer-to-unsigned conversion. */ - ir_unop_u2i, /**< Unsigned-to-integer conversion. */ + ir_unop_f2i, /**< Float-to-integer conversion. */ + ir_unop_f2u, /**< Float-to-unsigned conversion. */ + ir_unop_i2f, /**< Integer-to-float conversion. */ + ir_unop_f2b, /**< Float-to-boolean conversion */ + ir_unop_b2f, /**< Boolean-to-float conversion */ + ir_unop_i2b, /**< int-to-boolean conversion */ + ir_unop_b2i, /**< Boolean-to-int conversion */ + ir_unop_u2f, /**< Unsigned-to-float conversion. */ + ir_unop_i2u, /**< Integer-to-unsigned conversion. */ + ir_unop_u2i, /**< Unsigned-to-integer conversion. */ + ir_unop_bitcast_i2f, /**< Bit-identical int-to-float "conversion" */ + ir_unop_bitcast_f2i, /**< Bit-identical float-to-int "conversion" */ + ir_unop_bitcast_u2f, /**< Bit-identical uint-to-float "conversion" */ + ir_unop_bitcast_f2u, /**< Bit-identical float-to-uint "conversion" */ ir_unop_any, /** @@ -822,6 +987,28 @@ enum ir_expression_operation { ir_unop_dFdy, /*@}*/ + /** + * \name Floating point pack and unpack operations. + */ + /*@{*/ + ir_unop_pack_snorm_2x16, + ir_unop_pack_unorm_2x16, + ir_unop_pack_half_2x16, + ir_unop_unpack_snorm_2x16, + ir_unop_unpack_unorm_2x16, + ir_unop_unpack_half_2x16, + /*@}*/ + + /** + * \name Lowered floating point unpacking operations. + * + * \see lower_packing_builtins_visitor::split_unpack_half_2x16 + */ + /*@{*/ + ir_unop_unpack_half_2x16_split_x, + ir_unop_unpack_half_2x16_split_y, + /*@}*/ + ir_unop_noise, /** @@ -888,17 +1075,34 @@ enum ir_expression_operation { ir_binop_pow, + /** + * \name Lowered floating point packing operations. + * + * \see lower_packing_builtins_visitor::split_pack_half_2x16 + */ + /*@{*/ + ir_binop_pack_half_2x16_split, + /*@}*/ + + /** + * Load a value the size of a given GLSL type from a uniform block. + * + * operand0 is the ir_constant uniform block index in the linked shader. + * operand1 is a byte offset within the uniform block. + */ + ir_binop_ubo_load, + /** * A sentinel marking the last of the binary operations. */ - ir_last_binop = ir_binop_pow, + ir_last_binop = ir_binop_ubo_load, ir_quadop_vector, /** * A sentinel marking the last of all operations. */ - ir_last_opcode = ir_last_binop + ir_last_opcode = ir_quadop_vector }; class ir_expression : public ir_rvalue { @@ -932,10 +1136,14 @@ public: /** * Attempt to constant-fold the expression * + * The "variable_context" hash table links ir_variable * to ir_constant * + * that represent the variables' values. \c NULL represents an empty + * context. + * * If the expression cannot be constant folded, this method will return * \c NULL. */ - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); /** * Determine the number of operands used by an expression @@ -980,23 +1188,25 @@ public: /** - * IR instruction representing a function call + * HIR instruction representing a high-level function call, containing a list + * of parameters and returning a value in the supplied temporary. */ -class ir_call : public ir_rvalue { +class ir_call : public ir_instruction { public: - ir_call(ir_function_signature *callee, exec_list *actual_parameters) - : callee(callee) + ir_call(ir_function_signature *callee, + ir_dereference_variable *return_deref, + exec_list *actual_parameters) + : return_deref(return_deref), callee(callee) { ir_type = ir_type_call; assert(callee->return_type != NULL); - type = callee->return_type; actual_parameters->move_nodes_to(& this->actual_parameters); this->use_builtin = callee->is_builtin; } virtual ir_call *clone(void *mem_ctx, struct hash_table *ht) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual ir_call *as_call() { @@ -1010,13 +1220,6 @@ public: virtual ir_visitor_status accept(ir_hierarchical_visitor *); - /** - * Get a generic ir_call object when an error occurs - * - * Any allocation will be performed with 'ctx' as ralloc owner. - */ - static ir_call *get_error_instruction(void *ctx); - /** * Get an iterator for the set of acutal parameters */ @@ -1034,38 +1237,27 @@ public: } /** - * Get the function signature bound to this function call + * Generates an inline version of the function before @ir, + * storing the return value in return_deref. */ - ir_function_signature *get_callee() - { - return callee; - } + void generate_inline(ir_instruction *ir); /** - * Set the function call target + * Storage for the function's return value. + * This must be NULL if the return type is void. */ - void set_callee(ir_function_signature *sig); + ir_dereference_variable *return_deref; /** - * Generates an inline version of the function before @ir, - * returning the return value of the function. + * The specific function signature being called. */ - ir_rvalue *generate_inline(ir_instruction *ir); + ir_function_signature *callee; /* List of ir_rvalue of paramaters passed in this call. */ exec_list actual_parameters; /** Should this call only bind to a built-in function? */ bool use_builtin; - -private: - ir_call() - : callee(NULL) - { - this->ir_type = ir_type_call; - } - - ir_function_signature *callee; }; @@ -1139,7 +1331,6 @@ public: { this->ir_type = ir_type_loop_jump; this->mode = mode; - this->loop = loop; } virtual ir_loop_jump *clone(void *mem_ctx, struct hash_table *) const; @@ -1163,9 +1354,6 @@ public: /** Mode selector for the jump instruction. */ enum jump_mode mode; -private: - /** Loop containing this break instruction. */ - ir_loop *loop; }; /** @@ -1212,7 +1400,8 @@ enum ir_texture_opcode { ir_txb, /**< Texture look-up with LOD bias */ ir_txl, /**< Texture look-up with explicit LOD */ ir_txd, /**< Texture look-up with partial derivatvies */ - ir_txf /**< Texel fetch with explicit LOD */ + ir_txf, /**< Texel fetch with explicit LOD */ + ir_txs /**< Texture size */ }; @@ -1233,18 +1422,20 @@ enum ir_texture_opcode { * (txl 0 1 ( ) ) * (txd 0 1 ( ) (dPdx dPdy)) * (txf 0 ) + * (txs ) */ class ir_texture : public ir_rvalue { public: ir_texture(enum ir_texture_opcode op) - : op(op), projector(NULL), shadow_comparitor(NULL), offset(NULL) + : op(op), coordinate(NULL), projector(NULL), shadow_comparitor(NULL), + offset(NULL) { this->ir_type = ir_type_texture; } virtual ir_texture *clone(void *mem_ctx, struct hash_table *) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual void accept(ir_visitor *v) { @@ -1336,7 +1527,7 @@ public: virtual ir_swizzle *clone(void *mem_ctx, struct hash_table *) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual ir_swizzle *as_swizzle() { @@ -1355,7 +1546,7 @@ public: virtual ir_visitor_status accept(ir_hierarchical_visitor *); - bool is_lvalue() + bool is_lvalue() const { return val->is_lvalue() && !mask.has_duplicates; } @@ -1363,7 +1554,7 @@ public: /** * Get the variable that is ultimately referenced by an r-value */ - virtual ir_variable *variable_referenced(); + virtual ir_variable *variable_referenced() const; ir_rvalue *val; ir_swizzle_mask mask; @@ -1387,12 +1578,21 @@ public: return this; } - bool is_lvalue(); + bool is_lvalue() const; /** * Get the variable that is ultimately referenced by an r-value */ - virtual ir_variable *variable_referenced() = 0; + 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; }; @@ -1403,7 +1603,7 @@ public: virtual ir_dereference_variable *clone(void *mem_ctx, struct hash_table *) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual ir_dereference_variable *as_dereference_variable() { @@ -1413,11 +1613,20 @@ public: /** * Get the variable that is ultimately referenced by an r-value */ - virtual ir_variable *variable_referenced() + virtual ir_variable *variable_referenced() const { 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 @@ -1452,7 +1661,7 @@ public: virtual ir_dereference_array *clone(void *mem_ctx, struct hash_table *) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual ir_dereference_array *as_dereference_array() { @@ -1462,11 +1671,20 @@ public: /** * Get the variable that is ultimately referenced by an r-value */ - virtual ir_variable *variable_referenced() + virtual ir_variable *variable_referenced() const { 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); @@ -1491,16 +1709,25 @@ public: virtual ir_dereference_record *clone(void *mem_ctx, struct hash_table *) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); /** * Get the variable that is ultimately referenced by an r-value */ - virtual ir_variable *variable_referenced() + virtual ir_variable *variable_referenced() const { 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); @@ -1556,7 +1783,7 @@ public: virtual ir_constant *clone(void *mem_ctx, struct hash_table *) const; - virtual ir_constant *constant_expression_value(); + virtual ir_constant *constant_expression_value(struct hash_table *variable_context = NULL); virtual ir_constant *as_constant() { @@ -1588,17 +1815,43 @@ public: ir_constant *get_record_field(const char *name); + /** + * Copy the values on another constant at a given offset. + * + * The offset is ignored for array or struct copies, it's only for + * scalars or vectors into vectors or matrices. + * + * With identical types on both sides and zero offset it's clone() + * without creating a new object. + */ + + void copy_offset(ir_constant *src, int offset); + + /** + * Copy the values on another constant at a given offset and + * following an assign-like mask. + * + * The mask is ignored for scalars. + * + * Note that this function only handles what assign can handle, + * i.e. at most a vector as source and a column of a matrix as + * destination. + */ + + void copy_masked_offset(ir_constant *src, int offset, unsigned int mask); + /** * Determine whether a constant has the same value as another constant * * \sa ir_constant::is_zero, ir_constant::is_one, - * ir_constant::is_negative_one + * ir_constant::is_negative_one, ir_constant::is_basis */ bool has_value(const ir_constant *) const; virtual bool is_zero() const; virtual bool is_one() const; virtual bool is_negative_one() const; + virtual bool is_basis() const; /** * Value of the constant. @@ -1693,7 +1946,8 @@ extern bool ir_has_call(ir_instruction *ir); extern void -do_set_program_inouts(exec_list *instructions, struct gl_program *prog); +do_set_program_inouts(exec_list *instructions, struct gl_program *prog, + bool is_fragment_shader); extern char * prototype_string(const glsl_type *return_type, const char *name,