From 487a86fe7dc9904f445d91667095f641f72f7c81 Mon Sep 17 00:00:00 2001
From: Jared Adams <jaxad0127@gmail.com>
Date: Thu, 20 May 2010 01:35:17 -0600
Subject: Buffer layered sprites under SDL

This improves framerate and allows transparent overlay for complex
sprites. Two copies of the buffer are kept, one at full opacity,
one with variable opactiy, to reduce calls to setAlpha.

Reviewed-by: Bertram
---
 src/graphics.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/graphics.h')

diff --git a/src/graphics.h b/src/graphics.h
index 211fb901..344c31c3 100644
--- a/src/graphics.h
+++ b/src/graphics.h
@@ -73,6 +73,11 @@ struct ImageRect
 class Graphics : public gcn::SDLGraphics
 {
     public:
+        enum BlitMode {
+            BLIT_NORMAL = 0,
+            BLIT_GFX
+        };
+
         /**
          * Constructor.
          */
@@ -182,6 +187,12 @@ class Graphics : public gcn::SDLGraphics
             drawImageRect(area.x, area.y, area.width, area.height, imgRect);
         }
 
+        void setBlitMode(BlitMode mode)
+        { mBlitMode = mode; }
+
+        BlitMode getBlitMode()
+        { return mBlitMode; }
+
         /**
          * Updates the screen. This is done by either copying the buffer to the
          * screen or swapping pages.
@@ -211,6 +222,7 @@ class Graphics : public gcn::SDLGraphics
         int mBpp;
         bool mFullscreen;
         bool mHWAccel;
+        BlitMode mBlitMode;
 };
 
 extern Graphics *graphics;
-- 
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