review comments

CMakeLists.txt

@@ -254,7 +254,6 @@ set(COMMON src/common/logging/backend.cpp
            src/common/error.h
            src/common/scope_exit.h
            src/common/func_traits.h
-           src/common/math.h
            src/common/native_clock.cpp
            src/common/native_clock.h
            src/common/path_util.cpp

src/common/math.h

@@ -1,10 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include "common/types.h"
-
-static inline u32 IntLog2(u32 i) {
-    return 31u - __builtin_clz(i | 1u);
-}

src/shader_recompiler/backend/spirv/spirv_emit_context.cpp

@@ -7,7 +7,7 @@
 #include <boost/container/static_vector.hpp>
 #include <fmt/format.h>
 
-static constexpr auto M_PI = 3.14159265358979323846f;
+#include <numbers>
 
 namespace Shader::Backend::SPIRV {
 namespace {
@@ -103,7 +103,7 @@ void EmitContext::DefineArithmeticTypes() {
     u32_zero_value = ConstU32(0U);
     f32_zero_value = ConstF32(0.0f);
 
-    pi_x2 = ConstF32(2.0f * float(M_PI));
+    pi_x2 = ConstF32(2.0f * float{std::numbers::pi});
 
     input_f32 = Name(TypePointer(spv::StorageClass::Input, F32[1]), "input_f32");
     input_u32 = Name(TypePointer(spv::StorageClass::Input, U32[1]), "input_u32");

src/video_core/texture_cache/image_info.cpp

@@ -3,7 +3,6 @@
 
 #include "common/assert.h"
 #include "common/config.h"
-#include "common/math.h"
 #include "video_core/renderer_vulkan/liverpool_to_vk.h"
 #include "video_core/texture_cache/image_info.h"
 
@@ -46,6 +45,7 @@ static vk::ImageType ConvertImageType(AmdGpu::ImageType type) noexcept {
 }
 
 // clang-format off
+// The table of macro tiles parameters for given tiling index (row) and bpp (column)
 static constexpr std::array macro_tile_extents{
     std::pair{256u, 128u}, std::pair{256u, 128u}, std::pair{256u, 128u}, std::pair{256u, 128u}, // 00
     std::pair{256u, 128u}, std::pair{128u, 128u}, std::pair{128u, 128u}, std::pair{128u, 128u}, // 01
@@ -77,9 +77,14 @@ static constexpr std::array macro_tile_extents{
 };
 // clang-format on
 
+static constexpr std::pair micro_tile_extent{8u, 8u};
+static constexpr auto hw_pipe_interleave = 256u;
+
 static constexpr std::pair<u32, u32> GetMacroTileExtents(u32 tiling_idx, u32 bpp, u32 num_samples) {
     ASSERT(num_samples == 1);
-    return macro_tile_extents[tiling_idx * 4 + IntLog2(bpp) - 3];
+    const auto row = tiling_idx * 4;
+    const auto column = std::bit_width(bpp) - 4; // bpps are 8, 16, 32, 64
+    return macro_tile_extents[row + column];
 }
 
 static constexpr size_t ImageSizeLinearAligned(u32 pitch, u32 height, u32 bpp, u32 num_samples) {
@@ -87,7 +92,7 @@ static constexpr size_t ImageSizeLinearAligned(u32 pitch, u32 height, u32 bpp, u
     auto pitch_aligned = (pitch + pitch_align - 1) & ~(pitch_align - 1);
     const auto height_aligned = height;
     size_t log_sz = 1;
-    const auto slice_align = std::max(64u, 256u / (bpp + 7) / 8);
+    const auto slice_align = std::max(64u, hw_pipe_interleave / (bpp + 7) / 8);
     while (log_sz % slice_align) {
         log_sz = pitch_aligned * height_aligned * num_samples;
         pitch_aligned += pitch_align;
@@ -96,8 +101,7 @@ static constexpr size_t ImageSizeLinearAligned(u32 pitch, u32 height, u32 bpp, u
 }
 
 static constexpr size_t ImageSizeMicroTiled(u32 pitch, u32 height, u32 bpp, u32 num_samples) {
-    const auto pitch_align = 8u;
-    const auto height_align = 8u;
+    const auto& [pitch_align, height_align] = micro_tile_extent;
     auto pitch_aligned = (pitch + pitch_align - 1) & ~(pitch_align - 1);
     const auto height_aligned = (height + height_align - 1) & ~(height_align - 1);
     size_t log_sz = 1;
@@ -193,7 +197,7 @@ ImageInfo::ImageInfo(const AmdGpu::Image& image) noexcept {
     pixel_format = LiverpoolToVK::SurfaceFormat(image.GetDataFmt(), image.GetNumberFmt());
     type = ConvertImageType(image.GetType());
     is_cube = image.GetType() == AmdGpu::ImageType::Cube;
-    const auto is_volume = image.GetType() == AmdGpu::ImageType::Color3D;
+    is_volume = image.GetType() == AmdGpu::ImageType::Color3D;
     size.width = image.width + 1;
     size.height = image.height + 1;
     size.depth = is_volume ? image.depth + 1 : 1;

src/video_core/texture_cache/tile_manager.cpp

@@ -1,7 +1,6 @@
 // SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "common/math.h"
 #include "video_core/renderer_vulkan/vk_instance.h"
 #include "video_core/renderer_vulkan/vk_scheduler.h"
 #include "video_core/renderer_vulkan/vk_shader_util.h"
@@ -78,8 +77,8 @@ public:
 
     static u32 getBankIdx(u32 x, u32 y, u32 bank_width, u32 bank_height, u32 num_banks,
                           u32 num_pipes) {
-        const u32 x_shift_offset = IntLog2(bank_width * num_pipes);
-        const u32 y_shift_offset = IntLog2(bank_height);
+        const u32 x_shift_offset = std::bit_width(bank_width * num_pipes) - 1;
+        const u32 y_shift_offset = std::bit_width(bank_height) - 1;
         const u32 xs = x >> x_shift_offset;
         const u32 ys = y >> y_shift_offset;
         u32 bank = 0;