From 443b674ac99c705c8bce2e9ce439f6fe7fed3dd4 Mon Sep 17 00:00:00 2001
From: Xottab-DUTY <xottab-duty@yandex.ru>
Date: Sat, 26 Oct 2019 15:24:39 +0500
Subject: [PATCH] Floating point precision for physics related projects should
 be precise on Windows x64 (close #383) There's no ability to change the
 precision in runtime on Windows x64, so the physics calculations always were
 in low precision. This caused some dynamic objects were falling through
 terrain on spawn.

---
 Externals/ODE.vcxproj           | 3 +++
 Externals/OPCODE/OPCODE.vcxproj | 3 +++
 src/xrCDB/xrCDB.vcxproj         | 3 +++
 src/xrPhysics/xrPhysics.vcxproj | 3 +++
 4 files changed, 12 insertions(+)

diff --git a/Externals/ODE.vcxproj b/Externals/ODE.vcxproj
index c78ea1e7782..2752a9d17f4 100644
--- a/Externals/ODE.vcxproj
+++ b/Externals/ODE.vcxproj
@@ -86,6 +86,7 @@
       <EnableEnhancedInstructionSet Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
       <LanguageStandard Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">stdcpp14</LanguageStandard>
       <LanguageStandard Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">stdcpp14</LanguageStandard>
+      <FloatingPointModel Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Precise</FloatingPointModel>
     </ClCompile>
     <Link>
       <ModuleDefinitionFile>ode/config/msvcdefs.def</ModuleDefinitionFile>
@@ -97,6 +98,7 @@
       <EnableEnhancedInstructionSet Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
       <LanguageStandard Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">stdcpp14</LanguageStandard>
       <LanguageStandard Condition="'$(Configuration)|$(Platform)'=='Release|x64'">stdcpp14</LanguageStandard>
+      <FloatingPointModel Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Mixed'">
@@ -104,6 +106,7 @@
       <PreprocessorDefinitions>dNODEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <LanguageStandard Condition="'$(Configuration)|$(Platform)'=='Mixed|Win32'">stdcpp14</LanguageStandard>
       <LanguageStandard Condition="'$(Configuration)|$(Platform)'=='Mixed|x64'">stdcpp14</LanguageStandard>
+      <FloatingPointModel Condition="'$(Configuration)|$(Platform)'=='Mixed|x64'">Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
diff --git a/Externals/OPCODE/OPCODE.vcxproj b/Externals/OPCODE/OPCODE.vcxproj
index 9ef5fde1b73..2367f71f663 100644
--- a/Externals/OPCODE/OPCODE.vcxproj
+++ b/Externals/OPCODE/OPCODE.vcxproj
@@ -94,6 +94,7 @@
       <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
       <PreprocessorDefinitions>OPCODE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <LanguageStandard>stdcpp17</LanguageStandard>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
@@ -109,6 +110,7 @@
       <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
       <PreprocessorDefinitions>OPCODE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <LanguageStandard>stdcpp17</LanguageStandard>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Mixed|Win32'">
@@ -131,6 +133,7 @@
       <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
       <PreprocessorDefinitions>OPCODE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <LanguageStandard>stdcpp17</LanguageStandard>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
diff --git a/src/xrCDB/xrCDB.vcxproj b/src/xrCDB/xrCDB.vcxproj
index 3b70aa3b254..a3187c84448 100644
--- a/src/xrCDB/xrCDB.vcxproj
+++ b/src/xrCDB/xrCDB.vcxproj
@@ -102,11 +102,13 @@
     <ClCompile>
       <PreprocessorDefinitions>_USRDLL;XRCDB_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <PreprocessorDefinitions>_USRDLL;XRCDB_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -128,6 +130,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Mixed|x64'">
     <ClCompile>
       <PreprocessorDefinitions>_USRDLL;XRCDB_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
diff --git a/src/xrPhysics/xrPhysics.vcxproj b/src/xrPhysics/xrPhysics.vcxproj
index aab18c49b98..c048582e72e 100644
--- a/src/xrPhysics/xrPhysics.vcxproj
+++ b/src/xrPhysics/xrPhysics.vcxproj
@@ -108,6 +108,7 @@
     <ClCompile>
       <PreprocessorDefinitions>_USRDLL;XRPHYSICS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>$(xrExternals)ode/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -121,6 +122,7 @@
     <ClCompile>
       <PreprocessorDefinitions>_USRDLL;XRPHYSICS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>$(xrExternals)ode/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Mixed|Win32'">
@@ -135,6 +137,7 @@
       <PreprocessorDefinitions>_USRDLL;XRPHYSICS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <AdditionalIncludeDirectories>$(xrExternals)ode/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <FloatingPointModel>Precise</FloatingPointModel>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>