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//============================================================//
// File: beScreen.cpp
//
// Date: 10-19-2000
//============================================================//
#include "../header/Render2DCore.h"
//============================================================//
// beScreen()
//============================================================//
beScreen::beScreen()
{
m_pDDraw = NULL;
m_pddsBackBuffer = NULL;
m_pddsPrimary = NULL;
}
//============================================================//
// ~beScreen()
//============================================================//
beScreen::~beScreen()
{
beSafeRelease(m_pddsPrimary);
beSafeRelease(m_pDDraw);
}
//============================================================//
// Initialize()
//============================================================//
bool beScreen::Initialize(beScreenParams sparam)
{
// setup class
m_ScreenParams = sparam;
// Create the main DirectDraw object
HRESULT hRet = DirectDrawCreateEx(NULL, (VOID**)&m_pDDraw, IID_IDirectDraw7, NULL);
if (FAILED(hRet))
return false;
// Initialize surfaces
if (!InitializeSurfaces())
return false;
InitializeMask();
return true;
}
//============================================================//
// Delete()
//============================================================//
void beScreen::Delete()
{
if (m_pDDraw != NULL)
{
m_pDDraw->SetCooperativeLevel(m_ScreenParams.m_OwnerWnd, DDSCL_NORMAL);
if (m_pddsBackBuffer != NULL)
{
m_pddsBackBuffer->Release();
m_pddsBackBuffer = NULL;
}
if (m_pddsPrimary != NULL)
{
m_pddsPrimary->Release();
m_pddsPrimary = NULL;
}
}
return;
}
//============================================================//
// InitializeSurfaces()
//============================================================//
bool beScreen::InitializeSurfaces()
{
HRESULT hRet;
DDSURFACEDESC2 ddsd;
DDSCAPS2 ddscaps;
LPDIRECTDRAWCLIPPER pClipper;
if ( m_ScreenParams.m_Flags & BE_SCREENFLAGS_WINDOWED )
{
// Get normal windowed mode
hRet = m_pDDraw->SetCooperativeLevel(m_ScreenParams.m_OwnerWnd, DDSCL_NORMAL);
if (hRet != DD_OK)
return false;
// Get the dimensions of the viewport and screen bounds
GetClientRect(m_ScreenParams.m_OwnerWnd, &m_rcViewport);
GetClientRect(m_ScreenParams.m_OwnerWnd, &m_rcScreen);
ClientToScreen(m_ScreenParams.m_OwnerWnd, (POINT*)&m_rcScreen.left);
ClientToScreen(m_ScreenParams.m_OwnerWnd, (POINT*)&m_rcScreen.right);
// Create the primary surface
ZeroMemory(&ddsd,sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
ddsd.dwFlags = DDSD_CAPS;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
hRet = m_pDDraw->CreateSurface(&ddsd, &this->m_pddsPrimary, NULL);
if (hRet != DD_OK)
return false;
// Create a clipper object since this is for a Windowed render
hRet = m_pDDraw->CreateClipper(0, &pClipper, NULL);
if (hRet != DD_OK)
return false;
// Associate the clipper with the window
pClipper->SetHWnd(0, m_ScreenParams.m_OwnerWnd);
m_pddsPrimary->SetClipper(pClipper);
pClipper->Release();
pClipper = NULL;
// Get the backbuffer. For fullscreen mode, the backbuffer was created
// along with the primary, but windowed mode still needs to create one.
ddsd.dwFlags = DDSD_WIDTH | DDSD_HEIGHT | DDSD_CAPS;
ddsd.dwWidth = m_ScreenParams.m_iScreenWidth;
ddsd.dwHeight = m_ScreenParams.m_iScreenHeight;
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
hRet = m_pDDraw->CreateSurface(&ddsd, &m_pddsBackBuffer, NULL);
if (hRet != DD_OK)
return false;
// MessageBox(NULL,"AAAAAAAAH","ASH",MB_OK);
} else {
// Get exclusive mode
hRet = m_pDDraw->SetCooperativeLevel(m_ScreenParams.m_OwnerWnd, DDSCL_EXCLUSIVE |
DDSCL_FULLSCREEN);
if (hRet != DD_OK)
return false;
// Set the video mode
hRet = m_pDDraw->SetDisplayMode( m_ScreenParams.m_iScreenWidth, m_ScreenParams.m_iScreenHeight, m_ScreenParams.m_iScreenBitCount, 0, 0);
if (hRet != DD_OK)
return false;
// Get the dimensions of the viewport and screen bounds
// Store the rectangle which contains the renderer
SetRect(&m_rcViewport, 0, 0, m_ScreenParams.m_iScreenWidth, m_ScreenParams.m_iScreenHeight );
memcpy(&m_rcScreen, &m_rcViewport, sizeof(RECT) );
// Create the primary surface with 1 back buffer
ZeroMemory(&ddsd,sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
ddsd.dwFlags = DDSD_CAPS |
DDSD_BACKBUFFERCOUNT;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE |
DDSCAPS_FLIP |
DDSCAPS_COMPLEX;
ddsd.dwBackBufferCount = 1;
hRet = m_pDDraw->CreateSurface( &ddsd, &m_pddsPrimary, NULL);
if (hRet != DD_OK)
return false;
ZeroMemory(&ddscaps, sizeof(ddscaps));
ddscaps.dwCaps = DDSCAPS_BACKBUFFER;
hRet = m_pddsPrimary->GetAttachedSurface(&ddscaps, &m_pddsBackBuffer);
if (hRet != DD_OK)
return false;
}
return true;
}
//============================================================//
// InitializeMask()
//============================================================//
WORD GetNumberOfBits( DWORD dwMask )
{
WORD wBits = 0;
while( dwMask )
{
dwMask = dwMask & ( dwMask - 1 );
wBits++;
}
return wBits;
}
WORD GetMaskPos( DWORD dwMask )
{
WORD wPos = 0;
//while( !(dwMask & (1 << wPos)) ) wPos++;
while(!(dwMask & 1))
{
dwMask >>= 1;
wPos++;
}
return wPos;
}
void beScreen::InitializeMask()
{
DDPIXELFORMAT ddpf;
ZeroMemory(&ddpf, sizeof(ddpf));
ddpf.dwSize = sizeof(ddpf);
this->GetPrimarySurface()->GetPixelFormat(&ddpf);
m_wRBits = GetNumberOfBits(ddpf.dwRBitMask);
m_wGBits = GetNumberOfBits(ddpf.dwGBitMask);
m_wBBits = GetNumberOfBits(ddpf.dwBBitMask);
m_wRPos = GetMaskPos(ddpf.dwRBitMask);
m_wGPos = GetMaskPos(ddpf.dwGBitMask);
m_wBPos = GetMaskPos(ddpf.dwBBitMask);
}
//============================================================//
// Flip()
//============================================================//
bool beScreen::Flip()
{
HRESULT result;
if ( m_ScreenParams.m_Flags & BE_SCREENFLAGS_WINDOWED )
{
result = m_pddsPrimary->Blt(&m_rcScreen, m_pddsBackBuffer,
NULL, DDBLT_WAIT,
NULL);
} else
result = m_pddsPrimary->Flip(NULL, DDFLIP_WAIT);
if (result == DDERR_SURFACELOST) result = m_pddsPrimary->Restore();
if (FAILED(result)) return false;
// success
return true;
}
//============================================================//
// Move()
//============================================================//
void beScreen::Move()
{
// GetWindowRect(m_ScreenParams.m_OwnerWnd , &m_rcWindow);
GetClientRect(m_ScreenParams.m_OwnerWnd , &m_rcViewport);
GetClientRect(m_ScreenParams.m_OwnerWnd , &m_rcScreen);
ClientToScreen(m_ScreenParams.m_OwnerWnd , (POINT*)&m_rcScreen.left);
ClientToScreen(m_ScreenParams.m_OwnerWnd , (POINT*)&m_rcScreen.right);
}
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