From 2f8ae72431f3f2a6ba1006da7aac646c444c4bcc Mon Sep 17 00:00:00 2001
From: Robert Beckebans <robert.beckebans@gmail.com>
Date: Sat, 10 Apr 2021 09:53:52 +0200
Subject: [PATCH] Fixed Linux build issues. Tested with Clang

---
 neo/idlib/math/SphericalHarmonics.h | 14 +++++++-------
 neo/renderer/Material.h             |  4 ++--
 neo/renderer/RenderBackend.cpp      |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/neo/idlib/math/SphericalHarmonics.h b/neo/idlib/math/SphericalHarmonics.h
index be383017..a8937261 100644
--- a/neo/idlib/math/SphericalHarmonics.h
+++ b/neo/idlib/math/SphericalHarmonics.h
@@ -320,12 +320,12 @@ float shFindWindowingLambda( const SphericalHarmonicsT<float, L>& sh, float maxL
 
 	for( int l = 1; l <= ( int )L; ++l )
 	{
-		tableL[l] = float( sqr( l ) * sqr( l + 1 ) );
+		tableL[l] = float( Square( l ) * Square( l + 1 ) );
 
 		float B = 0.0f;
 		for( int m = -1; m <= l; ++m )
 		{
-			B += sqr( sh.at( l, m ) );
+			B += Square( sh.at( l, m ) );
 		}
 		tableB[l] = B;
 	}
@@ -345,16 +345,16 @@ float shFindWindowingLambda( const SphericalHarmonicsT<float, L>& sh, float maxL
 
 	float lambda = 0.0f;
 
-	const u32 iterationLimit = 10000000;
-	for( u32 i = 0; i < iterationLimit; ++i )
+	const uint32_t iterationLimit = 10000000;
+	for( uint32_t i = 0; i < iterationLimit; ++i )
 	{
 		float f = 0.0f;
 		float fd = 0.0f;
 
 		for( int l = 1; l <= ( int )L; ++l )
 		{
-			f += tableL[l] * tableB[l] / sqr( 1.0f + lambda * tableL[l] );
-			fd += ( 2.0f * sqr( tableL[l] ) * tableB[l] ) / cube( 1.0f + lambda * tableL[l] );
+			f += tableL[l] * tableB[l] / Square( 1.0f + lambda * tableL[l] );
+			fd += ( 2.0f * Square( tableL[l] ) * tableB[l] ) / Cube( 1.0f + lambda * tableL[l] );
 		}
 
 		f = targetSquaredLaplacian - f;
@@ -362,7 +362,7 @@ float shFindWindowingLambda( const SphericalHarmonicsT<float, L>& sh, float maxL
 		float delta = -f / fd;
 		lambda += delta;
 
-		if( abs( delta ) < 1e-6f )
+		if( idMath::Fabs( delta ) < 1e-6f )
 		{
 			break;
 		}
diff --git a/neo/renderer/Material.h b/neo/renderer/Material.h
index c4c0566b..7750a55e 100644
--- a/neo/renderer/Material.h
+++ b/neo/renderer/Material.h
@@ -368,7 +368,7 @@ typedef enum
 class idSoundEmitter;
 
 // RB: predefined Quake 1 light styles
-static char* predef_lightstyles[] =
+static const char* predef_lightstyles[] =
 {
 	"m",
 	"mmnmmommommnonmmonqnmmo",
@@ -384,7 +384,7 @@ static char* predef_lightstyles[] =
 	"abcdefghijklmnopqrrqponmlkjihgfedcba"
 };
 
-static char* predef_lightstylesinfo[] =
+static const char* predef_lightstylesinfo[] =
 {
 	"Normal",
 	"Flicker A",
diff --git a/neo/renderer/RenderBackend.cpp b/neo/renderer/RenderBackend.cpp
index 26d3ce04..4cf2f983 100644
--- a/neo/renderer/RenderBackend.cpp
+++ b/neo/renderer/RenderBackend.cpp
@@ -1337,7 +1337,7 @@ void idRenderBackend::DrawSingleInteraction( drawInteraction_t* din, bool useFas
 		probeMaxs[2] = viewDef->globalProbeBounds[1][2];
 		probeMaxs[3] = 0.0f;
 
-		idVec3& center = viewDef->globalProbeBounds.GetCenter();
+		idVec3 center = viewDef->globalProbeBounds.GetCenter();
 		probeCenter.Set( center.x, center.y, center.z, 1.0f );
 
 		SetVertexParm( RENDERPARM_WOBBLESKY_X, probeMins.ToFloatPtr() );