Mark framebuffer reads from the dirty rect backing buffer

nsgomez · Oct 19, 2024 · 2b96989 · 2b96989
1 parent 8f5a632
commit 2b96989
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Showing 3 changed files with 9 additions and 7 deletions.
diff --git a/scgl/cGDriver.h b/scgl/cGDriver.h
@@ -102,6 +102,7 @@ namespace nSCGL
 		void* secondaryWindow;
 		void* secondaryDeviceContext;
 		void* pixels;
+		void* lineBrush;
 #endif
 
 	private:

diff --git a/scgl/cGDriver_Viewport.cpp b/scgl/cGDriver_Viewport.cpp
@@ -251,6 +251,7 @@ namespace nSCGL
 
 				ShowWindow(secondaryHwnd, SW_SHOWNORMAL);
 				pixels = new char[3 * newMode.width * newMode.height];
+				lineBrush = CreateSolidBrush(RGB(255, 0, 0));
 			}
 #endif
 

diff --git a/scgl/ext/cGDriver_BufferRegions.cpp b/scgl/ext/cGDriver_BufferRegions.cpp
@@ -112,11 +112,8 @@ namespace nSCGL
 			InvalidateRect((HWND)secondaryWindow, nullptr, TRUE);
 
 			PAINTSTRUCT ps;
-			DWORD dwError;
 			HDC hdc = BeginPaint((HWND)secondaryWindow, &ps);
 
-			dwError = GetLastError();
-
 			BITMAPINFO bm;
 			bm.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 			bm.bmiHeader.biWidth = width;
@@ -134,7 +131,7 @@ namespace nSCGL
 			bm.bmiColors->rgbRed = 255;
 			bm.bmiColors->rgbReserved = 0;
 
-			dwError = ::SetDIBitsToDevice(
+			::SetDIBitsToDevice(
 				hdc,
 				dstX0,
 				windowHeight - dstY1,
@@ -148,11 +145,14 @@ namespace nSCGL
 				&bm,
 				DIB_RGB_COLORS);
 
-			dwError = GetLastError();
+			RECT rect;
+			rect.left = srcX0;
+			rect.right = rect.left + width;
+			rect.top = windowHeight - dstY1;
+			rect.bottom = rect.top + height;
 
+			FrameRect(hdc, &rect, (HBRUSH)lineBrush);
 			EndPaint((HWND)secondaryWindow, &ps);
-
-			dwError = GetLastError();
 		}
 #endif
-Original file line number
+Diff line change
@@ Expand Up / @@ -251,6 +251,7 @@ namespace nSCGL @@
     				ShowWindow(secondaryHwnd, SW_SHOWNORMAL);
     				pixels = new char[3 * newMode.width * newMode.height];
+    				lineBrush = CreateSolidBrush(RGB(255, 0, 0));
     			}
     #endif
@@ Expand Down @@