port: fix #210

by using a separate fullscreen fb for blur effects

port/src/pdsched.c

@@ -102,7 +102,8 @@ OSScMsg g_SchedRspMsg = {OS_SC_RSP_MSG};
 bool g_SchedIsFirstTask = true;
 
 s32 g_PrevFrameFb = -1;
-s32 g_PrevFrameCapTimer = -1;
+s32 g_BlurFb = -1;
+s32 g_BlurFbCapTimer = -1;
 
 void schedSetCrashEnable1(bool enable)
 {
@@ -180,6 +181,7 @@ void osCreateScheduler(OSSched *sc, OSThread *thread, u8 mode, u32 numFields)
 	schedInitCrashLastRendered();
 
 	g_PrevFrameFb = videoCreateFramebuffer(0, 0, false, true);
+	g_BlurFb = videoCreateFramebuffer(0, 0, false, true);
 }
 
 void osScAddClient(OSSched *sc, OSScClient *c, OSMesgQueue *msgQ, bool is30fps)
@@ -385,11 +387,11 @@ void schedConsiderScreenshot(void)
 		g_MenuData.screenshottimer = 0;
 	}
 
-	if (g_PrevFrameCapTimer == 0) {
-		videoCopyFramebuffer(g_PrevFrameFb, 0, -1, -1);
-		g_PrevFrameCapTimer = -1;
-	} else if (g_PrevFrameCapTimer > 0) {
-		--g_PrevFrameCapTimer;
+	if (g_BlurFbCapTimer == 0) {
+		videoCopyFramebuffer(g_BlurFb, 0, -1, -1);
+		g_BlurFbCapTimer = -1;
+	} else if (g_BlurFbCapTimer > 0) {
+		--g_BlurFbCapTimer;
 	}
 
 	if (g_MenuData.screenshottimer >= 2) {

src/game/bondview.c

@@ -307,12 +307,12 @@ Gfx *bviewDrawMotionBlur(Gfx *gdl, u32 colour, u32 alpha)
 		somefloat += 1.0f / fyyy;
 	}
 #else
-	gDPSetFramebufferTextureEXT(gdl++, 0, 0, 0, g_PrevFrameFb);
+	gDPSetFramebufferTextureEXT(gdl++, 0, 0, 0, g_BlurFb);
 	gSPImageRectangleEXT(gdl++,
 		viewleft << 2, viewtop << 2, viewleft, viewtop,
 		(viewleft + viewwidth) << 2, (viewtop + viewheight) << 2, viewleft + viewwidth, viewtop + viewheight,
 		0, videoGetNativeWidth(), videoGetNativeHeight());
-		g_PrevFrameCapTimer = 0;
+	g_BlurFbCapTimer = 0;
 #endif
 
 	return gdl;
@@ -545,12 +545,12 @@ Gfx *bviewDrawZoomBlur(Gfx *gdl, u32 colour, s32 alpha, f32 arg3, f32 arg4)
 	const s32 top = ycenter - halfh;
 	const s32 right = xcenter + halfw;
 	const s32 bottom = ycenter + halfh;
-	gDPSetFramebufferTextureEXT(gdl++, 0, 0, 0, g_PrevFrameFb);
+	gDPSetFramebufferTextureEXT(gdl++, 0, 0, 0, g_BlurFb);
 	gSPImageRectangleEXT(gdl++,
 		left << 2, top << 2, viewleft, viewtop,
 		right << 2, bottom << 2, viewleft + viewwidth, viewtop + viewheight,
 		0, videoGetNativeWidth(), videoGetNativeHeight());
-	g_PrevFrameCapTimer = 0;
+	g_BlurFbCapTimer = 0;
 #endif
 
 	return gdl;

src/include/data.h

@@ -543,7 +543,8 @@ extern s32 g_HudCenter;
 extern u32 g_HudAlignModeL;
 extern u32 g_HudAlignModeR;
 extern s32 g_PrevFrameFb;
-extern s32 g_PrevFrameCapTimer;
+extern s32 g_BlurFb;
+extern s32 g_BlurFbCapTimer;
 
 #define PLAYER_EXTCFG() g_PlayerExtCfg[g_Vars.currentplayerstats->mpindex & 3]
 #define PLAYER_DEFAULT_FOV (PLAYER_EXTCFG().fovy)