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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "ir.h"
namespace ir_builder {
/**
* This little class exists to let the helper expression generators
* take either an ir_rvalue * or an ir_variable * to be automatically
* dereferenced, while still providing compile-time type checking.
*
* You don't have to explicitly call the constructor -- C++ will see
* that you passed an ir_variable, and silently call the
* operand(ir_variable *var) constructor behind your back.
*/
class operand {
public:
operand(ir_rvalue *val)
: val(val)
{
}
operand(ir_variable *var)
{
void *mem_ctx = ralloc_parent(var);
val = new(mem_ctx) ir_dereference_variable(var);
}
ir_rvalue *val;
};
/** Automatic generator for ir_dereference_variable on assignment LHS.
*
* \sa operand
*/
class deref {
public:
deref(ir_dereference *val)
: val(val)
{
}
deref(ir_variable *var)
{
void *mem_ctx = ralloc_parent(var);
val = new(mem_ctx) ir_dereference_variable(var);
}
ir_dereference *val;
};
class ir_factory {
public:
ir_factory()
: instructions(NULL),
mem_ctx(NULL)
{
return;
}
void emit(ir_instruction *ir);
ir_variable *make_temp(const glsl_type *type, const char *name);
exec_list *instructions;
void *mem_ctx;
};
ir_assignment *assign(deref lhs, operand rhs);
ir_assignment *assign(deref lhs, operand rhs, int writemask);
ir_expression *expr(ir_expression_operation op, operand a);
ir_expression *expr(ir_expression_operation op, operand a, operand b);
ir_expression *add(operand a, operand b);
ir_expression *sub(operand a, operand b);
ir_expression *mul(operand a, operand b);
ir_expression *dot(operand a, operand b);
ir_expression *saturate(operand a);
/**
* Swizzle away later components, but preserve the ordering.
*/
ir_swizzle *swizzle_for_size(operand a, unsigned components);
ir_swizzle *swizzle_xxxx(operand a);
ir_swizzle *swizzle_yyyy(operand a);
ir_swizzle *swizzle_zzzz(operand a);
ir_swizzle *swizzle_wwww(operand a);
ir_swizzle *swizzle_x(operand a);
ir_swizzle *swizzle_y(operand a);
ir_swizzle *swizzle_z(operand a);
ir_swizzle *swizzle_w(operand a);
ir_swizzle *swizzle_xy(operand a);
ir_swizzle *swizzle_xyz(operand a);
ir_swizzle *swizzle_xyzw(operand a);
} /* namespace ir_builder */
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