From 8b68cfdb93a211d70e70a583457a0b7c7a8f047f Mon Sep 17 00:00:00 2001
From: Bertrand Augereau
Date: Wed, 6 Dec 2006 20:17:21 +0000
Subject: NDS : CPU scaler profiling (currently 50ms ouch)

svn-id: r24810
---
 backends/platform/ds/arm9/source/dsmain.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'backends/platform/ds/arm9')

diff --git a/backends/platform/ds/arm9/source/dsmain.cpp b/backends/platform/ds/arm9/source/dsmain.cpp
index 63c69fc727..a15534e770 100644
--- a/backends/platform/ds/arm9/source/dsmain.cpp
+++ b/backends/platform/ds/arm9/source/dsmain.cpp
@@ -715,6 +715,12 @@ void displayMode16BitFlipBuffer() {
 	}
 	else if (isCpuScalerEnabled())
 	{
+        //#define SCALER_PROFILE
+
+        #ifdef SCALER_PROFILE
+	    TIMER1_CR = TIMER_ENABLE | TIMER_DIV_1024;
+        u16 t0 = TIMER1_DATA;
+        #endif
 		const u8* back = (const u8*)get8BitBackBuffer();
 		u16* base = BG_GFX + 0x10000;
 		DS::Rescale_320x256xPAL8_To_256x256x1555( base,
@@ -722,6 +728,13 @@ void displayMode16BitFlipBuffer() {
 											      BG_PALETTE,
 											      256,
 											      512);
+        
+        #ifdef SCALER_PROFILE
+        u16 t1 = TIMER1_DATA;
+	    TIMER1_CR &= ~TIMER_ENABLE;
+        u32 dt = t1 - t0;        
+        consolePrintf("%d us\n", (dt * 10240) / 334);
+        #endif
 	}
 	#ifdef HEAVY_LOGGING
 	consolePrintf("done\n");
-- 
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