From c55d1bfd01147fa014ac07d4b03ef3cad8427ae6 Mon Sep 17 00:00:00 2001
From: a1xd <68629610+a1xd@users.noreply.github.com>
Date: Thu, 8 Apr 2021 02:30:01 -0400
Subject: optimize a bit/refactor modify

---
 driver/driver.cpp     | 33 +++++++++++++--------------------
 driver/driver.vcxproj | 12 ++++++++----
 2 files changed, 21 insertions(+), 24 deletions(-)

(limited to 'driver')

diff --git a/driver/driver.cpp b/driver/driver.cpp
index fa2415d..feace77 100644
--- a/driver/driver.cpp
+++ b/driver/driver.cpp
@@ -23,6 +23,7 @@ struct {
 
 extern "C" PULONG InitSafeBootMode;
 
+__declspec(guard(ignore))
 VOID
 RawaccelCallback(
     IN PDEVICE_OBJECT DeviceObject,
@@ -56,26 +57,18 @@ Arguments:
 
     auto num_packets = InputDataEnd - InputDataStart;
 
-    bool any = num_packets > 0;
-    bool rel_move = !(InputDataStart->Flags & MOUSE_MOVE_ABSOLUTE);
-    bool dev_match = global.args.device_id[0] == 0 || 
-        global.args.ignore == 
-            bool(wcsncmp(devExt->dev_id, global.args.device_id, ra::MAX_DEV_ID_LEN));
-
-    if (any && rel_move && dev_match) {
-        milliseconds time;
-
-        if (global.args.time_min == global.args.time_max) {
-            time = global.args.time_min;
-        }
-        else {
-            counter_t now = KeQueryPerformanceCounter(NULL).QuadPart;
-            counter_t ticks = now - devExt->counter;
-            devExt->counter = now;
-            milliseconds t = ticks * global.tick_interval / num_packets;
-            time = ra::clampsd(t, global.args.time_min, global.args.time_max);
-        }
-
+    if (num_packets > 0 &&
+        !(InputDataStart->Flags & MOUSE_MOVE_ABSOLUTE) && 
+            (global.args.device_id[0] == 0 ||
+                bool(wcsncmp(devExt->dev_id, global.args.device_id, ra::MAX_DEV_ID_LEN)) == 
+                    global.args.ignore)) {
+        counter_t now = KeQueryPerformanceCounter(NULL).QuadPart;
+        counter_t ticks = now - devExt->counter;
+        devExt->counter = now;
+        milliseconds raw_elapsed = ticks * global.tick_interval;
+        milliseconds time = ra::clampsd(raw_elapsed / num_packets, 
+                                        global.args.time_min, 
+                                        global.args.time_max);
         auto it = InputDataStart;
         do {
             if (it->LastX || it->LastY) {
diff --git a/driver/driver.vcxproj b/driver/driver.vcxproj
index 9034680..c2e4629 100644
--- a/driver/driver.vcxproj
+++ b/driver/driver.vcxproj
@@ -30,6 +30,7 @@
     <ConfigurationType>Driver</ConfigurationType>
     <OverrideDefaultRuntimeLibrary>true</OverrideDefaultRuntimeLibrary>
     <SpectreMitigation>Spectre</SpectreMitigation>
+    <Driver_SpectreMitigation>Spectre</Driver_SpectreMitigation>
   </PropertyGroup>
   <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <TargetVersion>Windows7</TargetVersion>
@@ -38,6 +39,7 @@
     <DriverType>KMDF</DriverType>
     <PlatformToolset>WindowsKernelModeDriver10.0</PlatformToolset>
     <ConfigurationType>Driver</ConfigurationType>
+    <Driver_SpectreMitigation>Spectre</Driver_SpectreMitigation>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <PropertyGroup>
@@ -74,18 +76,18 @@
       </RuntimeLibrary>
       <TreatWChar_tAsBuiltInType>true</TreatWChar_tAsBuiltInType>
       <CallingConvention>StdCall</CallingConvention>
-      <AssemblerOutput>AssemblyAndSourceCode</AssemblerOutput>
+      <AssemblerOutput>AssemblyCode</AssemblerOutput>
       <ExpandAttributedSource>false</ExpandAttributedSource>
       <UseUnicodeForAssemblerListing>false</UseUnicodeForAssemblerListing>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
       <Optimization>MaxSpeed</Optimization>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
+      <FavorSizeOrSpeed>Neither</FavorSizeOrSpeed>
       <WholeProgramOptimization>false</WholeProgramOptimization>
       <BufferSecurityCheck>true</BufferSecurityCheck>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <FloatingPointModel>Precise</FloatingPointModel>
+      <FloatingPointModel>Fast</FloatingPointModel>
     </ClCompile>
     <Link>
       <LinkTimeCodeGeneration>
@@ -114,9 +116,11 @@
       <RuntimeLibrary>
       </RuntimeLibrary>
       <TreatWChar_tAsBuiltInType>true</TreatWChar_tAsBuiltInType>
-      <FloatingPointModel>Precise</FloatingPointModel>
+      <FloatingPointModel>Fast</FloatingPointModel>
       <CallingConvention>StdCall</CallingConvention>
       <Optimization>MaxSpeed</Optimization>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
+      <BufferSecurityCheck>true</BufferSecurityCheck>
     </ClCompile>
     <Link>
       <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-- 
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