From 3638a171bda48dc9a8d264f68dd04a187a433aa6 Mon Sep 17 00:00:00 2001
From: ptitSeb
Date: Sat, 16 Dec 2017 14:20:36 +0100
Subject: Added some crude frameskip and activate RLE for ColorKeyed surface

---
 src/sdl/graphics.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

(limited to 'src/sdl/graphics.c')

diff --git a/src/sdl/graphics.c b/src/sdl/graphics.c
index 4af2381..7415b52 100755
--- a/src/sdl/graphics.c
+++ b/src/sdl/graphics.c
@@ -72,6 +72,15 @@ void PHL_StartDrawing()
 }
 void PHL_EndDrawing()
 {
+	//implement some crude frameskiping, limited to 2 frame skip
+	static skip = 0;
+	uint32_t tnext = tframe + 1000/60;
+	if (SDL_GetTicks()>tnext && skip<2) {
+		tframe += 1000/60;
+		skip++;
+		return;
+	}
+
 	// handle black borders
 	if(deltaX) {
 		SDL_Rect rect = {0, 0, deltaX, screenH};
@@ -87,7 +96,6 @@ void PHL_EndDrawing()
 	}
 
     SDL_Flip(screen);
-	uint32_t tnext = tframe + 1000/60;
 	while((tframe = SDL_GetTicks())<tnext)
         SDL_Delay(10);
 }
@@ -111,7 +119,7 @@ void PHL_ResetDrawbuffer()
 //PHL_RGB PHL_NewRGB(int r, int g, int b);
 void PHL_SetColorKey(PHL_Surface surf, int r, int g, int b)
 {
-    SDL_SetColorKey(surf, SDL_SRCCOLORKEY, SDL_MapRGB(surf->format, r, g, b));
+    SDL_SetColorKey(surf, SDL_SRCCOLORKEY|SDL_RLEACCEL, SDL_MapRGB(surf->format, r, g, b));
 }
 
 PHL_Surface PHL_NewSurface(int w, int h)
@@ -168,9 +176,9 @@ PHL_Surface PHL_LoadBMP(int index)
 				if (dx == 0 && dy == 0) {					
 					//Darkness special case
 					if (index == 27) {
-						SDL_SetColorKey(surf, SDL_SRCCOLORKEY, SDL_MapRGB(surf->format, 0x00, 0x00, 0x00));
+						SDL_SetColorKey(surf, SDL_SRCCOLORKEY|SDL_RLEACCEL, SDL_MapRGB(surf->format, 0x00, 0x00, 0x00));
 					}else{
-						SDL_SetColorKey(surf, SDL_SRCCOLORKEY, SDL_MapRGB(surf->format, palette[0][0].r, palette[0][0].g, palette[0][0].b));
+						SDL_SetColorKey(surf, SDL_SRCCOLORKEY|SDL_RLEACCEL, SDL_MapRGB(surf->format, palette[0][0].r, palette[0][0].g, palette[0][0].b));
 					}
 				}
 				
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