Revert "Implement stage-level colorspace shader keyword"

This reverts commit 3764166.

Author: slipher

src/engine/renderer/tr_shader.cpp

@@ -2009,7 +2009,6 @@ static bool ParseStage( shaderStage_t *stage, const char **text )
 	filterType_t filterType;
 	char         buffer[ 1024 ] = "";
 	bool     loadMap = false;
-	bool blendRegimeMatch = true;
 
 	while ( true )
 	{
@@ -2845,23 +2844,6 @@ static bool ParseStage( shaderStage_t *stage, const char **text )
 				continue;
 			}
 		}
-		// disable the stage if the renderer's blending mode does not match the specified mode
-		else if ( !Q_stricmp( token, "ifBlendRegime" ) )
-		{
-			token = COM_ParseExt2( text, false );
-			if ( !Q_stricmp( token, "naive" ) )
-			{
-				blendRegimeMatch = !tr.worldLinearizeTexture;
-			}
-			else if ( !Q_stricmp( token, "linear" ) )
-			{
-				blendRegimeMatch = tr.worldLinearizeTexture;
-			}
-			else
-			{
-				Log::Warn( "unknown parameter'%s' for ifBlendRegime in shader '%s'", token, shader.name );
-			}
-		}
 		// alpha <arithmetic expression>
 		else if ( !Q_stricmp( token, "alpha" ) )
 		{
@@ -3240,11 +3222,6 @@ static bool ParseStage( shaderStage_t *stage, const char **text )
 		}
 	}
 
-	if ( !blendRegimeMatch )
-	{
-		return true; // parsing succeeded, but not active
-	}
-
 	// parsing succeeded
 	stage->active = true;