1 /* 2 * Copyright (c) 2015 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 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 /** 25 * \file lower_buffer_access.h 26 * 27 * Helper for IR lowering pass to replace dereferences of buffer object based 28 * shader variables with intrinsic function calls. 29 * 30 * This helper is used by lowering passes for UBOs, SSBOs and compute shader 31 * shared variables. 32 */ 33 34 #ifndef LOWER_BUFFER_ACCESS_H 35 #define LOWER_BUFFER_ACCESS_H 36 37 #include "ir.h" 38 #include "ir_rvalue_visitor.h" 39 40 namespace lower_buffer_access { 41 42 class lower_buffer_access : public ir_rvalue_enter_visitor { 43 public: 44 virtual void 45 insert_buffer_access(void *mem_ctx, ir_dereference *deref, 46 const glsl_type *type, ir_rvalue *offset, 47 unsigned mask, int channel) = 0; 48 49 void emit_access(void *mem_ctx, bool is_write, ir_dereference *deref, 50 ir_variable *base_offset, unsigned int deref_offset, 51 bool row_major, const glsl_type *matrix_type, 52 enum glsl_interface_packing packing, 53 unsigned int write_mask); 54 55 bool is_dereferenced_thing_row_major(const ir_rvalue *deref); 56 57 void setup_buffer_access(void *mem_ctx, ir_rvalue *deref, 58 ir_rvalue **offset, unsigned *const_offset, 59 bool *row_major, 60 const glsl_type **matrix_type, 61 const glsl_struct_field **struct_field, 62 enum glsl_interface_packing packing); 63 64 protected: 65 bool use_std430_as_default; 66 }; 67 68 } /* namespace lower_buffer_access */ 69 70 #endif /* LOWER_BUFFER_ACCESS_H */ 71