Allow r_clear to accept standard RGB values (ref #132)

neo/renderer/OpenGL/RenderBackend_GL.cpp

@@ -1851,6 +1851,11 @@ void idRenderBackend::SetBuffer( const void* data )
 		float c[3];
 		if( sscanf( r_clear.GetString(), "%f %f %f", &c[0], &c[1], &c[2] ) == 3 )
 		{
+			if (c[0] > 1.0f || c[1] > 1.0f || c[2] > 1.0f) {
+				c[0] = c[0] / 255.0f;
+				c[1] = c[1] / 255.0f;
+				c[2] = c[2] / 255.0f;
+			}
 			GL_Clear( true, false, false, 0, c[0], c[1], c[2], 1.0f, true );
 		}
 		else if( r_clear.GetInteger() == 2 )

neo/renderer/RenderSystem_init.cpp

@@ -145,7 +145,7 @@ idCVar r_useLightAreaCulling( "r_useLightAreaCulling", "1", CVAR_RENDERER | CVAR
 idCVar r_useLightScissors( "r_useLightScissors", "3", CVAR_RENDERER | CVAR_INTEGER, "0 = no scissor, 1 = non-clipped scissor, 2 = near-clipped scissor, 3 = fully-clipped scissor", 0, 3, idCmdSystem::ArgCompletion_Integer<0, 3> );
 idCVar r_useEntityPortalCulling( "r_useEntityPortalCulling", "1", CVAR_RENDERER | CVAR_INTEGER, "0 = none, 1 = cull frustum corners to plane, 2 = exact clip the frustum faces", 0, 2, idCmdSystem::ArgCompletion_Integer<0, 2> );
 idCVar r_logFile( "r_logFile", "0", CVAR_RENDERER | CVAR_INTEGER, "number of frames to emit GL logs" );
-idCVar r_clear( "r_clear", "2", CVAR_RENDERER, "force screen clear every frame, 1 = purple, 2 = black, 'r g b' = custom" );
+idCVar r_clear( "r_clear", "2", CVAR_RENDERER, "force screen clear every frame, 1 = purple, 2 = black, 'r g b' = custom, NOTE: acceptable values must be either in the range of 0-1 or 0-255" );
 
 idCVar r_offsetFactor( "r_offsetfactor", "0", CVAR_RENDERER | CVAR_FLOAT, "polygon offset parameter" );
 // RB: offset factor was 0, and units were -600 which caused some very ugly polygon offsets on Android so I reverted the values to the same as in Q3A