src/glsl/ir_builder.cpp

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "ir_builder.h"
  25 #include "program/prog_instruction.h"
  26
  27 using namespace ir_builder;
  28
  29 namespace ir_builder {
  30
  31 void
  32 ir_factory::emit(ir_instruction *ir)
  33 {
  34    instructions->push_tail(ir);
  35 }
  36
  37 ir_assignment *
  38 assign(deref lhs, operand rhs, int writemask)
  39 {
  40    void *mem_ctx = ralloc_parent(lhs.val);
  41
  42    ir_assignment *assign = new(mem_ctx) ir_assignment(lhs.val,
  43                                                       rhs.val,
  44                                                       NULL, writemask);
  45
  46    return assign;
  47 }
  48
  49 ir_assignment *
  50 assign(deref lhs, operand rhs)
  51 {
  52    return assign(lhs, rhs, (1 << lhs.val->type->vector_elements) - 1);
  53 }
  54
  55 ir_swizzle *
  56 swizzle(operand a, int swizzle, int components)
  57 {
  58    void *mem_ctx = ralloc_parent(a.val);
  59
  60    return new(mem_ctx) ir_swizzle(a.val,
  61                                   GET_SWZ(swizzle, 0),
  62                                   GET_SWZ(swizzle, 1),
  63                                   GET_SWZ(swizzle, 2),
  64                                   GET_SWZ(swizzle, 3),
  65                                   components);
  66 }
  67
  68 ir_swizzle *
  69 swizzle_xxxx(operand a)
  70 {
  71    return swizzle(a, SWIZZLE_XXXX, 4);
  72 }
  73
  74 ir_swizzle *
  75 swizzle_yyyy(operand a)
  76 {
  77    return swizzle(a, SWIZZLE_YYYY, 4);
  78 }
  79
  80 ir_swizzle *
  81 swizzle_zzzz(operand a)
  82 {
  83    return swizzle(a, SWIZZLE_ZZZZ, 4);
  84 }
  85
  86 ir_swizzle *
  87 swizzle_wwww(operand a)
  88 {
  89    return swizzle(a, SWIZZLE_WWWW, 4);
  90 }
  91
  92 ir_swizzle *
  93 swizzle_x(operand a)
  94 {
  95    return swizzle(a, SWIZZLE_XXXX, 1);
  96 }
  97
  98 ir_swizzle *
  99 swizzle_y(operand a)
 100 {
 101    return swizzle(a, SWIZZLE_YYYY, 1);
 102 }
 103
 104 ir_swizzle *
 105 swizzle_z(operand a)
 106 {
 107    return swizzle(a, SWIZZLE_ZZZZ, 1);
 108 }
 109
 110 ir_swizzle *
 111 swizzle_w(operand a)
 112 {
 113    return swizzle(a, SWIZZLE_WWWW, 1);
 114 }
 115
 116 ir_swizzle *
 117 swizzle_xy(operand a)
 118 {
 119    return swizzle(a, SWIZZLE_XYZW, 2);
 120 }
 121
 122 ir_swizzle *
 123 swizzle_xyz(operand a)
 124 {
 125    return swizzle(a, SWIZZLE_XYZW, 3);
 126 }
 127
 128 ir_swizzle *
 129 swizzle_xyzw(operand a)
 130 {
 131    return swizzle(a, SWIZZLE_XYZW, 4);
 132 }
 133
 134 ir_expression *
 135 expr(ir_expression_operation op, operand a, operand b)
 136 {
 137    void *mem_ctx = ralloc_parent(a.val);
 138
 139    return new(mem_ctx) ir_expression(op, a.val, b.val);
 140 }
 141
 142 ir_expression *add(operand a, operand b)
 143 {
 144    return expr(ir_binop_add, a, b);
 145 }
 146
 147 ir_expression *sub(operand a, operand b)
 148 {
 149    return expr(ir_binop_sub, a, b);
 150 }
 151
 152 ir_expression *mul(operand a, operand b)
 153 {
 154    return expr(ir_binop_mul, a, b);
 155 }
 156
 157 ir_expression *dot(operand a, operand b)
 158 {
 159    return expr(ir_binop_dot, a, b);
 160 }
 161
 162 ir_expression *
 163 saturate(operand a)
 164 {
 165    void *mem_ctx = ralloc_parent(a.val);
 166
 167    return expr(ir_binop_max,
 168                expr(ir_binop_min, a, new(mem_ctx) ir_constant(1.0f)),
 169                new(mem_ctx) ir_constant(0.0f));
 170 }
 171
 172 } /* namespace ir_builder */