add create vertex buffer for a triangle

GDP/D3D9/Direct3D.cpp

@@ -1,6 +1,5 @@
 #include "Direct3D.h"
 #include "Utilities.h"
-#include <random>
 
 INT Direct3D::init(HWND hWnd, UINT width, UINT height, BOOL isFullscreen)
 {
@@ -49,23 +48,15 @@ INT Direct3D::init(HWND hWnd, UINT width, UINT height, BOOL isFullscreen)
 	return 0;
 }
 
-void Direct3D::beginScene()
+void Direct3D::beginScene(BYTE red, BYTE green, BYTE blue)
 {
 	_pD3DDevice->BeginScene(); // init a frame, after this call we are allowed to do draw calls
 
 	// change background color
-	static std::default_random_engine e;
-	static std::uniform_int_distribution<int> d(0, 255);
-
 	_pD3DDevice->Clear(
 		0, nullptr, // areas to clear, null -> everything
 		D3DCLEAR_TARGET, // what to clear, bitmask
-
-		// how to clean
-		//D3DCOLOR_XRGB(d(e), d(e), d(e)), //random color
-		//D3DCOLOR_XRGB(255, 0, 0), // red color
-		D3DCOLOR_XRGB(0, 0, 0), // black color
-		1.0f, 0xFFFFFFFF
+		D3DCOLOR_XRGB(red, green, blue), 1.0f, 0xFFFFFFFF // how to clean
 	);
 }