From 0a6ef8179ccb4f058fc1b571c1f6bca98ef5d224 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stephan=20A=C3=9Fmus?= <superstippi@gmx.de>
Date: Fri, 25 Apr 2008 10:47:55 +0000
Subject: [PATCH] I have no idea anymore what I was messing with here, but it
 looks interesting.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25147 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/tests/servers/app/newerClipping/main.cpp | 80 +++++++++++++++-----
 1 file changed, 62 insertions(+), 18 deletions(-)

diff --git a/src/tests/servers/app/newerClipping/main.cpp b/src/tests/servers/app/newerClipping/main.cpp
index 4dfb4988d0..69a625e30e 100644
--- a/src/tests/servers/app/newerClipping/main.cpp
+++ b/src/tests/servers/app/newerClipping/main.cpp
@@ -80,6 +80,7 @@ Window::Window(const char* title)
 // destructor
 Window::~Window()
 {
+	fInterface.Shutdown();
 	fDesktop->Lock();
 	fDesktop->Quit();
 }
@@ -224,27 +225,70 @@ union pixel2 {
 	uint8	data8[8];
 };
 
+// gfxcpy32
+// * numBytes is expected to be a multiple of 4
+inline
+void
+gfxcpy32(uint8* dst, uint8* src, int32 numBytes)
+{
+	uint64* d64 = (uint64*)dst;
+	uint64* s64 = (uint64*)src;
+	int32 numBytesStart = numBytes;
+	while (numBytes >= 32) {
+		*d64++ = *s64++;
+		*d64++ = *s64++;
+		*d64++ = *s64++;
+		*d64++ = *s64++;
+		numBytes -= 32;
+	}
+	if (numBytes >= 16) {
+		*d64++ = *s64++;
+		*d64++ = *s64++;
+		numBytes -= 16;
+	}
+	if (numBytes >= 8) {
+		*d64++ = *s64++;
+		numBytes -= 8;
+	}
+	if (numBytes == 4) {
+		uint32* d32 = (uint32*)(dst + numBytesStart - numBytes);
+		uint32* s32 = (uint32*)(src + numBytesStart - numBytes);
+		*d32 = *s32;
+	}
+}
+
 void
 blend_line_64(uint8* buffer, int32 pixels, uint8 r, uint8 g, uint8 b, uint8 a)
 {
 	pixel2 p;
 	pixels /= 2;
+
+	r = (r * a) >> 8;
+	g = (g * a) >> 8;
+	b = (b * a) >> 8;
+	a = 255 - a;
+
+	uint8 tempBuffer[pixels * 8];
+
+	uint8* t = tempBuffer;
+	uint8* s = buffer;
+
 	for (int32 i = 0; i < pixels; i++) {
-		p.data64 = *(uint64*)buffer;
+		p.data64 = *(uint64*)s;
 
-		p.data8[0] = ((b - p.data8[0]) * a + (p.data8[0] << 8)) >> 8;
-		p.data8[1] = ((g - p.data8[1]) * a + (p.data8[1] << 8)) >> 8;
-		p.data8[2] = ((r - p.data8[2]) * a + (p.data8[2] << 8)) >> 8;
-		p.data8[3] = a;
+		t[0] = ((p.data8[0] * a) >> 8) + b;
+		t[1] = ((p.data8[1] * a) >> 8) + g;
+		t[2] = ((p.data8[2] * a) >> 8) + r;
 
-		p.data8[4] = ((b - p.data8[4]) * a + (p.data8[4] << 8)) >> 8;
-		p.data8[5] = ((g - p.data8[5]) * a + (p.data8[5] << 8)) >> 8;
-		p.data8[6] = ((r - p.data8[6]) * a + (p.data8[6] << 8)) >> 8;
-		p.data8[7] = a;
+		t[4] = ((p.data8[4] * a) >> 8) + b;
+		t[5] = ((p.data8[5] * a) >> 8) + g;
+		t[6] = ((p.data8[6] * a) >> 8) + r;
 
-		*((uint64*)buffer) = p.data64;
-		buffer += 8;
+		t += 8;
+		s += 8;
 	}
+
+	gfxcpy32(buffer, tempBuffer, pixels * 8);
 }
 void
 test2(uint8* buffer, uint32 bpr)
@@ -267,9 +311,9 @@ test2(uint8* buffer, uint32 bpr)
 			blend_line_32(handle, 512, 255, 0, 0, 20);
 			handle += bpr;
 		}
-//	}
+//	}*/
 
-	bigtime_t start64 = system_time();*/
+	bigtime_t start64 = system_time();
 //	for (int32 x = 0; x < 10; x++) {
 		handle = buffer;
 		for (int32 i = 0; i < 640; i++) {
@@ -278,10 +322,10 @@ test2(uint8* buffer, uint32 bpr)
 		}
 //	}
 
-/*	bigtime_t finish = system_time();
-	printf("8:  %lld\n", start32 - start8);
-	printf("32: %lld\n", start64 - start32);
-	printf("64: %lld\n", finish - start64);*/
+	bigtime_t finish = system_time();
+//	printf("8:  %lld\n", start32 - start8);
+//	printf("32: %lld\n", start64 - start32);
+	printf("blend 64: %lld\n", finish - start64);
 }
 	
 // #pragma mark -
@@ -301,7 +345,7 @@ Window::DirectConnected(direct_buffer_info* info)
 		case B_DIRECT_MODIFY:
 			fBuffer.SetTo(info);
 			fDesktop->SetOffset(info->window_bounds.left, info->window_bounds.top);
-			test1((uint8*)info->bits, info->bytes_per_row);
+			test2((uint8*)info->bits, info->bytes_per_row);
 			break;
 		case B_DIRECT_STOP:
 			fBuffer.SetTo(NULL);