(svn r22397) -Document: some tidbits of the blitter code

1 files changed, 3 insertions, 1 deletions

diff --git a/src/blitter/null.hpp b/src/blitter/null.hpp
index d3a3a317a..e9e157d72 100644
--- a/src/blitter/null.hpp
+++ b/src/blitter/null.hpp
@@ -14,6 +14,7 @@
 
 #include "factory.hpp"
 
+/** Blitter that does nothing. */
 class Blitter_Null : public Blitter {
 public:
 	/* virtual */ uint8 GetScreenDepth() { return 0; }
@@ -23,7 +24,7 @@ public:
 	/* virtual */ void *MoveTo(const void *video, int x, int y) { return NULL; };
 	/* virtual */ void SetPixel(void *video, int x, int y, uint8 colour) {};
 	/* virtual */ void DrawRect(void *video, int width, int height, uint8 colour) {};
-	/* virtual */ void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour) {};
+	/* virtual */ void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width) {};
 	/* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height) {};
 	/* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height) {};
 	/* virtual */ void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch) {};
@@ -36,6 +37,7 @@ public:
 	/* virtual */ int GetBytesPerPixel() { return 0; }
 };
 
+/** Factory for the blitter that doesn nothing. */
 class FBlitter_Null: public BlitterFactory<FBlitter_Null> {
 public:
 	/* virtual */ const char *GetName() { return "null"; }