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.h" 25 26 namespace ir_builder { 27 28 #ifndef WRITEMASK_X 29 enum writemask { 30 WRITEMASK_X = 0x1, 31 WRITEMASK_Y = 0x2, 32 WRITEMASK_Z = 0x4, 33 WRITEMASK_W = 0x8, 34 }; 35 #endif 36 37 /** 38 * This little class exists to let the helper expression generators 39 * take either an ir_rvalue * or an ir_variable * to be automatically 40 * dereferenced, while still providing compile-time type checking. 41 * 42 * You don't have to explicitly call the constructor -- C++ will see 43 * that you passed an ir_variable, and silently call the 44 * operand(ir_variable *var) constructor behind your back. 45 */ 46 class operand { 47 public: operand(ir_rvalue * val)48 operand(ir_rvalue *val) 49 : val(val) 50 { 51 } 52 operand(ir_variable * var)53 operand(ir_variable *var) 54 { 55 void *mem_ctx = ralloc_parent(var); 56 val = new(mem_ctx) ir_dereference_variable(var); 57 } 58 59 ir_rvalue *val; 60 }; 61 62 /** Automatic generator for ir_dereference_variable on assignment LHS. 63 * 64 * \sa operand 65 */ 66 class deref { 67 public: deref(ir_dereference * val)68 deref(ir_dereference *val) 69 : val(val) 70 { 71 } 72 deref(ir_variable * var)73 deref(ir_variable *var) 74 { 75 void *mem_ctx = ralloc_parent(var); 76 val = new(mem_ctx) ir_dereference_variable(var); 77 } 78 79 80 ir_dereference *val; 81 }; 82 83 class ir_factory { 84 public: 85 ir_factory(exec_list *instructions = NULL, void *mem_ctx = NULL) instructions(instructions)86 : instructions(instructions), 87 mem_ctx(mem_ctx) 88 { 89 return; 90 } 91 92 void emit(ir_instruction *ir); 93 ir_variable *make_temp(const glsl_type *type, const char *name, glsl_precision prec = glsl_precision_undefined); 94 95 ir_constant* constant(float f)96 constant(float f) 97 { 98 return new(mem_ctx) ir_constant(f); 99 } 100 101 ir_constant* constant(int i)102 constant(int i) 103 { 104 return new(mem_ctx) ir_constant(i); 105 } 106 107 ir_constant* constant(unsigned u)108 constant(unsigned u) 109 { 110 return new(mem_ctx) ir_constant(u); 111 } 112 113 ir_constant* constant(bool b)114 constant(bool b) 115 { 116 return new(mem_ctx) ir_constant(b); 117 } 118 119 exec_list *instructions; 120 void *mem_ctx; 121 }; 122 123 ir_assignment *assign(deref lhs, operand rhs); 124 ir_assignment *assign(deref lhs, operand rhs, int writemask); 125 ir_assignment *assign(deref lhs, operand rhs, operand condition); 126 ir_assignment *assign(deref lhs, operand rhs, operand condition, int writemask); 127 128 ir_return *ret(operand retval); 129 130 ir_expression *expr(ir_expression_operation op, operand a); 131 ir_expression *expr(ir_expression_operation op, operand a, operand b); 132 ir_expression *expr(ir_expression_operation op, operand a, operand b, operand c); 133 ir_expression *add(operand a, operand b); 134 ir_expression *sub(operand a, operand b); 135 ir_expression *mul(operand a, operand b); 136 ir_expression *imul_high(operand a, operand b); 137 ir_expression *div(operand a, operand b); 138 ir_expression *carry(operand a, operand b); 139 ir_expression *borrow(operand a, operand b); 140 ir_expression *round_even(operand a); 141 ir_expression *dot(operand a, operand b); 142 ir_expression *clamp(operand a, operand b, operand c); 143 ir_expression *saturate(operand a); 144 ir_expression *abs(operand a); 145 ir_expression *neg(operand a); 146 ir_expression *sin(operand a); 147 ir_expression *cos(operand a); 148 ir_expression *exp(operand a); 149 ir_expression *rsq(operand a); 150 ir_expression *sqrt(operand a); 151 ir_expression *log(operand a); 152 ir_expression *sign(operand a); 153 154 ir_expression *equal(operand a, operand b); 155 ir_expression *nequal(operand a, operand b); 156 ir_expression *less(operand a, operand b); 157 ir_expression *greater(operand a, operand b); 158 ir_expression *lequal(operand a, operand b); 159 ir_expression *gequal(operand a, operand b); 160 161 ir_expression *logic_not(operand a); 162 ir_expression *logic_and(operand a, operand b); 163 ir_expression *logic_or(operand a, operand b); 164 165 ir_expression *bit_not(operand a); 166 ir_expression *bit_or(operand a, operand b); 167 ir_expression *bit_and(operand a, operand b); 168 ir_expression *lshift(operand a, operand b); 169 ir_expression *rshift(operand a, operand b); 170 171 ir_expression *f2i(operand a); 172 ir_expression *bitcast_f2i(operand a); 173 ir_expression *i2f(operand a); 174 ir_expression *bitcast_i2f(operand a); 175 ir_expression *f2u(operand a); 176 ir_expression *bitcast_f2u(operand a); 177 ir_expression *u2f(operand a); 178 ir_expression *bitcast_u2f(operand a); 179 ir_expression *i2u(operand a); 180 ir_expression *u2i(operand a); 181 ir_expression *b2i(operand a); 182 ir_expression *i2b(operand a); 183 ir_expression *f2b(operand a); 184 ir_expression *b2f(operand a); 185 186 ir_expression *min2(operand a, operand b); 187 ir_expression *max2(operand a, operand b); 188 189 ir_expression *interpolate_at_centroid(operand a); 190 ir_expression *interpolate_at_offset(operand a, operand b); 191 ir_expression *interpolate_at_sample(operand a, operand b); 192 193 ir_expression *fma(operand a, operand b, operand c); 194 ir_expression *lrp(operand x, operand y, operand a); 195 ir_expression *csel(operand a, operand b, operand c); 196 ir_expression *bitfield_insert(operand a, operand b, operand c, operand d); 197 198 ir_swizzle *swizzle(operand a, int swizzle, int components); 199 /** 200 * Swizzle away later components, but preserve the ordering. 201 */ 202 ir_swizzle *swizzle_for_size(operand a, unsigned components); 203 204 ir_swizzle *swizzle_xxxx(operand a); 205 ir_swizzle *swizzle_yyyy(operand a); 206 ir_swizzle *swizzle_zzzz(operand a); 207 ir_swizzle *swizzle_wwww(operand a); 208 ir_swizzle *swizzle_x(operand a); 209 ir_swizzle *swizzle_y(operand a); 210 ir_swizzle *swizzle_z(operand a); 211 ir_swizzle *swizzle_w(operand a); 212 ir_swizzle *swizzle_xy(operand a); 213 ir_swizzle *swizzle_xyz(operand a); 214 ir_swizzle *swizzle_xyzw(operand a); 215 216 ir_if *if_tree(operand condition, 217 ir_instruction *then_branch); 218 ir_if *if_tree(operand condition, 219 ir_instruction *then_branch, 220 ir_instruction *else_branch); 221 222 } /* namespace ir_builder */ 223