#include "std.h"
#include "emul.h"
#include "vars.h"
#include "dx.h"
#include "dxovr.h"
#include "dxerr.h"
#include "init.h"
DWORD colorkey=-1;
void update_overlay()
{
RECT rc_src, rc_dst;
GetClientRect(wnd, &rc_dst);
ClientToScreen(wnd, (POINT*)&rc_dst.left);
ClientToScreen(wnd, (POINT*)&rc_dst.right);
if (rc_dst.left == rc_dst.right || rc_dst.top == rc_dst.bottom) return;
rc_src.left = rc_src.top = 0;
rc_src.right = temp.ox, rc_src.bottom = temp.oy;
if (wnd == GetForegroundWindow() && rc_dst.left >= 0 && rc_dst.top >= 0)
{
DDSURFACEDESC desc; desc.dwSize = sizeof desc;
if (sprim->IsLost() == DDERR_SURFACELOST)
sprim->Restore();
HRESULT r = sprim->Lock(0, &desc, DDLOCK_SURFACEMEMORYPTR | DDLOCK_WAIT | DDLOCK_READONLY, 0);
if (r != DD_OK) { printrdd("IDirectDrawSurface2::Lock() [test]", r); exit(); }
char *ptr = (char*)desc.lpSurface + rc_dst.top*desc.lPitch + rc_dst.left*desc.ddpfPixelFormat.dwRGBBitCount/8;
colorkey = *(unsigned*)ptr;
sprim->Unlock(0);
if (desc.ddpfPixelFormat.dwRGBBitCount < 32)
colorkey &= (1<<desc.ddpfPixelFormat.dwRGBBitCount)-1;
}
// use min and max stretch
DDCAPS caps; caps.dwSize = sizeof caps; dd->GetCaps(&caps,0);
if ((rc_dst.right - rc_dst.left)*1000/temp.ox > (int)caps.dwMaxOverlayStretch)
rc_dst.right = rc_dst.left + temp.ox*caps.dwMaxOverlayStretch/1000;
if ((rc_dst.bottom - rc_dst.top)*1000/temp.oy > (int)caps.dwMaxOverlayStretch)
rc_dst.bottom = rc_dst.top + temp.oy*caps.dwMaxOverlayStretch/1000;
if ((rc_dst.right - rc_dst.left)*1000/temp.ox < (int)caps.dwMinOverlayStretch)
rc_dst.right = rc_dst.left + temp.ox*caps.dwMinOverlayStretch/1000;
if ((rc_dst.bottom - rc_dst.top)*1000/temp.oy < (int)caps.dwMinOverlayStretch)
rc_dst.bottom = rc_dst.top + temp.oy*caps.dwMinOverlayStretch/1000;
// setup boundaries for non-clipping overlay
int mx = GetSystemMetrics(SM_CXSCREEN), my = GetSystemMetrics(SM_CYSCREEN);
if (rc_dst.left < 0) rc_src.left = -rc_dst.left * (rc_src.right - rc_src.left) / (rc_dst.right - rc_dst.left), rc_dst.left = 0;
if (rc_dst.top < 0) rc_src.top = -rc_dst.top * (rc_src.bottom - rc_src.top) / (rc_dst.bottom - rc_dst.top), rc_dst.top = 0;
if (rc_dst.right > mx) rc_src.right = rc_src.left + (mx - rc_dst.left) * (rc_src.right - rc_src.left) / (rc_dst.right - rc_dst.left), rc_dst.right = mx;
if (rc_dst.bottom > my) rc_src.bottom = (my - rc_dst.top) * (rc_src.bottom - rc_src.top) / (rc_dst.bottom - rc_dst.top), rc_dst.bottom = my;
if (colorkey==-1) return;
if (rc_dst.left >= rc_dst.right || rc_dst.top >= rc_dst.bottom) return;
if (rc_src.left >= rc_src.right || rc_src.top >= rc_src.bottom) return;
DDOVERLAYFX fx = { sizeof fx };
fx.dckDestColorkey.dwColorSpaceLowValue = fx.dckDestColorkey.dwColorSpaceHighValue = colorkey;
for (;;) {
HRESULT r = surf0->UpdateOverlay(&rc_src, sprim, &rc_dst, DDOVER_SHOW | DDOVER_DDFX | DDOVER_KEYDESTOVERRIDE, &fx);
if (r == DD_OK) break;
if (r == DDERR_SURFACELOST) {
if (surf0->Restore() != DD_OK) set_vidmode(); // recreate overlay
break; // another update_overlay in set_vidmode() -> UpdateWindow()
}
printrdd("IDirectDrawSurface2::UpdateOverlay()", r); exit();
}
}