MSVC: improve warnings for scons and cmake

Some int/float conversion warnings were disabled by buildsystems but
re-enabled by BLI_winstuff.h, the warnigns relate to conversions not
considered issues on other systems so better just quiet them.

CMakeLists.txt

@@ -1007,6 +1007,7 @@ elseif(WIN32)
 			# disable:
 			"/wd4018"  # signed/unsigned mismatch
 			"/wd4065"  # switch statement contains 'default' but no 'case' labels
+			"/wd4127"  # conditional expression is constant
 			"/wd4181"  # qualifier applied to reference type; ignored
 			"/wd4200"  # zero-sized array in struct/union
 			"/wd4244"  # conversion from 'type1' to 'type2', possible loss of data

build_files/scons/config/win32-vc-config.py

@@ -246,7 +246,7 @@ BF_OPENGL_LIB_STATIC = [ '${BF_OPENGL}/lib/libGL.a', '${BF_OPENGL}/lib/libGLU.a'
 CC = 'cl.exe'
 CXX = 'cl.exe'
 
-CCFLAGS = ['/nologo', '/J', '/W1', '/Gd', '/wd4018', '/wd4244', '/wd4305', '/wd4800', '/wd4065', '/wd4267', '/we4013']
+CCFLAGS = ['/nologo', '/J', '/W1', '/Gd', '/wd4018', '/wd4065', '/wd4127', '/wd4181', '/wd4200', '/wd4244', '/wd4267', '/wd4305', '/wd4800', '/we4013']
 CXXFLAGS = ['/EHsc']
 BGE_CXXFLAGS = ['/O2', '/Ob2', '/EHsc', '/GR', '/fp:fast', '/arch:SSE']
 

build_files/scons/config/win64-vc-config.py

@@ -245,7 +245,8 @@ CC = 'cl.exe'
 CXX = 'cl.exe'
 
 CFLAGS = []
-CCFLAGS = ['/nologo', '/J', '/W1', '/Gd', '/we4013', '/wd4018', '/wd4244', '/wd4305', '/wd4800', '/wd4065', '/wd4267']
+CCFLAGS = ['/nologo', '/J', '/W1', '/Gd', '/wd4018', '/wd4065', '/wd4127', '/wd4181', '/wd4200', '/wd4244', '/wd4267', '/wd4305', '/wd4800', '/we4013']
+
 CXXFLAGS = ['/EHsc']
 BGE_CXXFLAGS = ['/O2', '/Ob2', '/EHsc', '/GR', '/fp:fast']
 

source/blender/blenkernel/BKE_pbvh.h

@@ -256,10 +256,6 @@ typedef struct PBVHVertexIter {
 	float *mask;
 } PBVHVertexIter;
 
-#ifdef _MSC_VER
-#pragma warning (disable:4127) // conditional expression is constant
-#endif
-
 void pbvh_vertex_iter_init(PBVH *bvh, PBVHNode *node,
                            PBVHVertexIter *vi, int mode);
 

source/blender/blenlib/BLI_winstuff.h

@@ -37,9 +37,7 @@
 #  error "This include is for Windows only!"
 #endif
 
-#ifndef FREE_WINDOWS
-#  pragma warning(once: 4761 4305 4244 4018)
-#else
+#ifdef FREE_WINDOWS
 #  ifdef WINVER
 #    undef WINVER
 #  endif

source/blender/blenlib/intern/freetypefont.c

@@ -32,11 +32,6 @@
  *  \ingroup bli
  */
 
-
-#ifdef _MSC_VER
-#  pragma warning (disable:4244)
-#endif
-
 #include <ft2build.h>
 #include FT_FREETYPE_H
 /* not needed yet */

source/blender/blenlib/intern/noise.c

@@ -30,12 +30,6 @@
  *  \ingroup bli
  */
 
-
-#ifdef _MSC_VER
-#  pragma warning (disable:4244)  /* "conversion from double to float" */
-#  pragma warning (disable:4305)  /* "truncation from const double to float" */
-#endif
-
 #include <math.h>
 
 #include "BLI_noise.h"