| /* |
| * Copyright (C) 2019 Connor Abbott <cwabbott0@gmail.com> |
| * Copyright (C) 2019 Lyude Paul <thatslyude@gmail.com> |
| * Copyright (C) 2019 Ryan Houdek <Sonicadvance1@gmail.com> |
| * |
| * 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. |
| */ |
| |
| #ifndef __bifrost_h__ |
| #define __bifrost_h__ |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| struct bifrost_header { |
| unsigned unk0 : 7; |
| // If true, convert any infinite result of any floating-point operation to |
| // the biggest representable number. |
| unsigned suppress_inf: 1; |
| // Convert any NaN results to 0. |
| unsigned suppress_nan : 1; |
| unsigned unk1 : 2; |
| // true if the execution mask of the next clause is the same as the mask of |
| // the current clause. |
| unsigned back_to_back : 1; |
| unsigned no_end_of_shader: 1; |
| unsigned unk2 : 2; |
| // Set to true for fragment shaders, to implement this bit of spec text |
| // from section 7.1.5 of the GLSL ES spec: |
| // |
| // "Stores to image and buffer variables performed by helper invocations |
| // have no effect on the underlying image or buffer memory." |
| // |
| // Helper invocations are threads (invocations) corresponding to pixels in |
| // a quad that aren't actually part of the triangle, but are included to |
| // make derivatives work correctly. They're usually turned on, but they |
| // need to be masked off for GLSL-level stores. This bit seems to be the |
| // only bit that's actually different between fragment shaders and other |
| // shaders, so this is probably what it's doing. |
| unsigned elide_writes : 1; |
| // If backToBack is off: |
| // - true for conditional branches and fallthrough |
| // - false for unconditional branches |
| // The blob seems to always set it to true if back-to-back is on. |
| unsigned branch_cond : 1; |
| // This bit is set when the next clause writes to the data register of some |
| // previous clause. |
| unsigned datareg_writebarrier: 1; |
| unsigned datareg : 6; |
| unsigned scoreboard_deps: 8; |
| unsigned scoreboard_index: 3; |
| unsigned clause_type: 4; |
| unsigned unk3 : 1; // part of clauseType? |
| unsigned next_clause_type: 4; |
| unsigned unk4 : 1; // part of nextClauseType? |
| }; |
| |
| struct bifrost_fma_inst { |
| unsigned src0 : 3; |
| unsigned op : 20; |
| }; |
| |
| struct bifrost_add_inst { |
| unsigned src0 : 3; |
| unsigned op : 17; |
| }; |
| |
| #endif |