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 #ifndef IR_BUILDER_H 25 #define IR_BUILDER_H 26 27 #include "ir.h" 28 29 namespace ir_builder { 30 31 #ifndef WRITEMASK_X 32 enum writemask { 33 WRITEMASK_X = 0x1, 34 WRITEMASK_Y = 0x2, 35 WRITEMASK_Z = 0x4, 36 WRITEMASK_W = 0x8, 37 }; 38 #endif 39 40 /** 41 * This little class exists to let the helper expression generators 42 * take either an ir_rvalue * or an ir_variable * to be automatically 43 * dereferenced, while still providing compile-time type checking. 44 * 45 * You don't have to explicitly call the constructor -- C++ will see 46 * that you passed an ir_variable, and silently call the 47 * operand(ir_variable *var) constructor behind your back. 48 */ 49 class operand { 50 public: operand(ir_rvalue * val)51 operand(ir_rvalue *val) 52 : val(val) 53 { 54 } 55 operand(ir_variable * var)56 operand(ir_variable *var) 57 { 58 void *mem_ctx = ralloc_parent(var); 59 val = new(mem_ctx) ir_dereference_variable(var); 60 } 61 62 ir_rvalue *val; 63 }; 64 65 /** Automatic generator for ir_dereference_variable on assignment LHS. 66 * 67 * \sa operand 68 */ 69 class deref { 70 public: deref(ir_dereference * val)71 deref(ir_dereference *val) 72 : val(val) 73 { 74 } 75 deref(ir_variable * var)76 deref(ir_variable *var) 77 { 78 void *mem_ctx = ralloc_parent(var); 79 val = new(mem_ctx) ir_dereference_variable(var); 80 } 81 82 83 ir_dereference *val; 84 }; 85 86 class ir_factory { 87 public: 88 ir_factory(exec_list *instructions = NULL, void *mem_ctx = NULL) instructions(instructions)89 : instructions(instructions), 90 mem_ctx(mem_ctx) 91 { 92 return; 93 } 94 95 void emit(ir_instruction *ir); 96 ir_variable *make_temp(const glsl_type *type, const char *name); 97 98 ir_constant* constant(float f)99 constant(float f) 100 { 101 return new(mem_ctx) ir_constant(f); 102 } 103 104 ir_constant* constant(int i)105 constant(int i) 106 { 107 return new(mem_ctx) ir_constant(i); 108 } 109 110 ir_constant* constant(unsigned u)111 constant(unsigned u) 112 { 113 return new(mem_ctx) ir_constant(u); 114 } 115 116 ir_constant* constant(bool b)117 constant(bool b) 118 { 119 return new(mem_ctx) ir_constant(b); 120 } 121 122 exec_list *instructions; 123 void *mem_ctx; 124 }; 125 126 ir_assignment *assign(deref lhs, operand rhs); 127 ir_assignment *assign(deref lhs, operand rhs, int writemask); 128 ir_assignment *assign(deref lhs, operand rhs, operand condition); 129 ir_assignment *assign(deref lhs, operand rhs, operand condition, int writemask); 130 131 ir_return *ret(operand retval); 132 133 ir_expression *expr(ir_expression_operation op, operand a); 134 ir_expression *expr(ir_expression_operation op, operand a, operand b); 135 ir_expression *expr(ir_expression_operation op, operand a, operand b, operand c); 136 ir_expression *add(operand a, operand b); 137 ir_expression *sub(operand a, operand b); 138 ir_expression *mul(operand a, operand b); 139 ir_expression *imul_high(operand a, operand b); 140 ir_expression *div(operand a, operand b); 141 ir_expression *carry(operand a, operand b); 142 ir_expression *borrow(operand a, operand b); 143 ir_expression *trunc(operand a); 144 ir_expression *round_even(operand a); 145 ir_expression *fract(operand a); 146 ir_expression *dot(operand a, operand b); 147 ir_expression *clamp(operand a, operand b, operand c); 148 ir_expression *saturate(operand a); 149 ir_expression *abs(operand a); 150 ir_expression *neg(operand a); 151 ir_expression *sin(operand a); 152 ir_expression *cos(operand a); 153 ir_expression *exp(operand a); 154 ir_expression *rcp(operand a); 155 ir_expression *rsq(operand a); 156 ir_expression *sqrt(operand a); 157 ir_expression *log(operand a); 158 ir_expression *sign(operand a); 159 160 ir_expression *subr_to_int(operand a); 161 ir_expression *equal(operand a, operand b); 162 ir_expression *nequal(operand a, operand b); 163 ir_expression *less(operand a, operand b); 164 ir_expression *greater(operand a, operand b); 165 ir_expression *lequal(operand a, operand b); 166 ir_expression *gequal(operand a, operand b); 167 168 ir_expression *logic_not(operand a); 169 ir_expression *logic_and(operand a, operand b); 170 ir_expression *logic_or(operand a, operand b); 171 172 ir_expression *bit_not(operand a); 173 ir_expression *bit_or(operand a, operand b); 174 ir_expression *bit_and(operand a, operand b); 175 ir_expression *bit_xor(operand a, operand b); 176 ir_expression *lshift(operand a, operand b); 177 ir_expression *rshift(operand a, operand b); 178 179 ir_expression *f2i(operand a); 180 ir_expression *bitcast_f2i(operand a); 181 ir_expression *i2f(operand a); 182 ir_expression *bitcast_i2f(operand a); 183 ir_expression *f2u(operand a); 184 ir_expression *bitcast_f2u(operand a); 185 ir_expression *u2f(operand a); 186 ir_expression *bitcast_u2f(operand a); 187 ir_expression *i2u(operand a); 188 ir_expression *u2i(operand a); 189 ir_expression *b2i(operand a); 190 ir_expression *i2b(operand a); 191 ir_expression *f2b(operand a); 192 ir_expression *b2f(operand a); 193 194 ir_expression *f2d(operand a); 195 ir_expression *i2d(operand a); 196 ir_expression *u2d(operand a); 197 198 ir_expression *bitcast_d2i64(operand a); 199 ir_expression *bitcast_d2u64(operand a); 200 201 ir_expression *bitcast_i642d(operand a); 202 ir_expression *bitcast_u642d(operand a); 203 204 ir_expression *min2(operand a, operand b); 205 ir_expression *max2(operand a, operand b); 206 207 ir_expression *interpolate_at_centroid(operand a); 208 ir_expression *interpolate_at_offset(operand a, operand b); 209 ir_expression *interpolate_at_sample(operand a, operand b); 210 211 ir_expression *fma(operand a, operand b, operand c); 212 ir_expression *lrp(operand x, operand y, operand a); 213 ir_expression *csel(operand a, operand b, operand c); 214 ir_expression *bitfield_extract(operand a, operand b, operand c); 215 ir_expression *bitfield_insert(operand a, operand b, operand c, operand d); 216 217 ir_swizzle *swizzle(operand a, int swizzle, int components); 218 /** 219 * Swizzle away later components, but preserve the ordering. 220 */ 221 ir_swizzle *swizzle_for_size(operand a, unsigned components); 222 223 ir_swizzle *swizzle_xxxx(operand a); 224 ir_swizzle *swizzle_yyyy(operand a); 225 ir_swizzle *swizzle_zzzz(operand a); 226 ir_swizzle *swizzle_wwww(operand a); 227 ir_swizzle *swizzle_x(operand a); 228 ir_swizzle *swizzle_y(operand a); 229 ir_swizzle *swizzle_z(operand a); 230 ir_swizzle *swizzle_w(operand a); 231 ir_swizzle *swizzle_xy(operand a); 232 ir_swizzle *swizzle_xyz(operand a); 233 ir_swizzle *swizzle_xyzw(operand a); 234 235 ir_if *if_tree(operand condition, 236 ir_instruction *then_branch); 237 ir_if *if_tree(operand condition, 238 ir_instruction *then_branch, 239 ir_instruction *else_branch); 240 241 } /* namespace ir_builder */ 242 243 #endif 244