1 /* 2 * Copyright (c) 2022 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 INTEL_GENX_STATE_ELK_H 25 #define INTEL_GENX_STATE_ELK_H 26 27 #ifndef GFX_VERx10 28 #error This file should only be included by genX files. 29 #endif 30 31 #if GFX_VER > 8 32 #error "ELK doesn't support Gfx > 8." 33 #endif 34 35 #include <stdbool.h> 36 37 #include "dev/intel_device_info.h" 38 #include "genxml/gen_macros.h" 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 #if GFX_VER >= 7 45 46 static inline void 47 intel_set_ps_dispatch_state(struct GENX(3DSTATE_PS) *ps, 48 const struct intel_device_info *devinfo, 49 const struct elk_wm_prog_data *prog_data, 50 unsigned rasterization_samples, 51 enum intel_msaa_flags msaa_flags) 52 { 53 assert(rasterization_samples != 0); 54 55 bool enable_8 = prog_data->dispatch_8; 56 bool enable_16 = prog_data->dispatch_16; 57 bool enable_32 = prog_data->dispatch_32; 58 59 /* SKL PRMs, Volume 2a: Command Reference: Instructions: 60 * 3DSTATE_PS_BODY::8 Pixel Dispatch Enable: 61 * 62 * "When Render Target Fast Clear Enable is ENABLED or Render Target 63 * Resolve Type = RESOLVE_PARTIAL or RESOLVE_FULL, this bit must be 64 * DISABLED." 65 */ 66 #if GFX_VER >= 8 67 /* BDW has the same wording as SKL, except some of the fields mentioned 68 * don't exist... 69 */ 70 if (ps->RenderTargetFastClearEnable || 71 ps->RenderTargetResolveEnable) 72 enable_8 = false; 73 #endif 74 75 const bool is_persample_dispatch = 76 elk_wm_prog_data_is_persample(prog_data, msaa_flags); 77 78 if (is_persample_dispatch) { 79 /* Starting with SandyBridge (where we first get MSAA), the different 80 * pixel dispatch combinations are grouped into classifications A 81 * through F (SNB PRM Vol. 2 Part 1 Section 7.7.1). On most hardware 82 * generations, the only configurations supporting persample dispatch 83 * are those in which only one dispatch width is enabled. 84 */ 85 if (enable_32 || enable_16) 86 enable_8 = false; 87 if (enable_32) 88 enable_16 = false; 89 } 90 91 assert(enable_8 || enable_16 || enable_32); 92 93 ps->_8PixelDispatchEnable = enable_8; 94 ps->_16PixelDispatchEnable = enable_16; 95 ps->_32PixelDispatchEnable = enable_32; 96 } 97 98 #endif 99 100 #ifdef __cplusplus 101 } 102 #endif 103 104 #endif /* INTEL_GENX_STATE_ELK_H */ 105