Skip to content

GDI Direct Rendering #6

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Feb 24, 2025
Merged

GDI Direct Rendering #6

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
73 changes: 7 additions & 66 deletions src/dllmain.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -198,7 +198,7 @@ std::chrono::milliseconds GetTimeSinceLastTtrade() {
return std::chrono::duration_cast<std::chrono::milliseconds>(current - start);
}

void executeTrade() {
void ExecuteTrade() {
if (GetTimeSinceLastTtrade() >= tradingFrequency) {
for (const auto& [productName, info] : productSettings) {
int sale = info.at("sale");
Expand All @@ -219,78 +219,25 @@ void executeTrade() {
}
}

void CopyRenderResult(uint16_t* destBuffer, uint32_t* srcBuffer, int surfaceWidth, int surfaceHeight, int pitch) {
RECT rectClip = Menu::GetClipRect();

int xStart = rectClip.left;
int xEnd = rectClip.right;
int yStart = rectClip.top;
int yEnd = rectClip.bottom;

for (int y = yStart; y < yEnd; ++y) {
uint16_t* destRow = (uint16_t*)((BYTE*)destBuffer + y * pitch);
uint32_t* srcRow = srcBuffer + y * surfaceWidth;

for (int x = xStart; x < xEnd; ++x) {
uint32_t argb = srcRow[x];
uint8_t r = (argb >> 16) & 0xFF;
uint8_t g = (argb >> 8) & 0xFF;
uint8_t b = argb & 0xFF;

uint16_t rgb565 = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
destRow[x] = rgb565;
}
}
}

HRESULT WINAPI MyBlt(IDirectDrawSurface* pDestSurface, LPCRECT lpDestRect, IDirectDrawSurface* pSrcSurface, LPCRECT lpSrcRect, DWORD dwFlags, LPDDBLTFX lpDDBltFx) {
executeTrade();
ExecuteTrade();

HRESULT hr = oBlt(pDestSurface, lpDestRect, pSrcSurface, lpSrcRect, dwFlags, lpDDBltFx);

if (FAILED(hr)) {
if (FAILED(hr))
return hr;
}

if (!Menu::IsOpenMenu())
return hr;

DDSURFACEDESC ddsd;
ZeroMemory(&ddsd, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
HDC hDC;

if (FAILED(pDestSurface->Lock(NULL, &ddsd, DDLOCK_WAIT | DDLOCK_SURFACEMEMORYPTR, NULL))) {
if (!SUCCEEDED(pDestSurface->GetDC(&hDC)))
return E_FAIL;
}

BITMAPINFO bmi;
ZeroMemory(&bmi, sizeof(BITMAPINFO));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = ddsd.dwWidth;
bmi.bmiHeader.biHeight = -static_cast<int>(ddsd.dwHeight);
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 32;
bmi.bmiHeader.biCompression = BI_RGB;

void* pPixels = NULL;
HBITMAP hBitmap = CreateDIBSection(NULL, &bmi, DIB_RGB_COLORS, &pPixels, NULL, 0);
if (!hBitmap) {
pDestSurface->Unlock(NULL);
return E_FAIL;
}

HDC hdc = CreateCompatibleDC(NULL);
if (!hdc) {
DeleteObject(hBitmap);
pDestSurface->Unlock(NULL);
return E_FAIL;
}

HBITMAP hOldBitmap = (HBITMAP)SelectObject(hdc, hBitmap);

std::string currentProductName = availableProducts[indexCurrentProduct];

Menu::SetContext(hdc);
Menu::SetContext(hDC);
Menu::DrawBackground(RECT{0, 0, 300, 139});
Menu::DrawTextField(RECT{5, 5, 95, 34}, L"product");
Menu::DrawTextField(RECT{99, 5, 294, 34}, ConvertToWString(currentProductName).c_str(), TEXT_ALIGN_LEFT);
Expand All @@ -302,13 +249,7 @@ HRESULT WINAPI MyBlt(IDirectDrawSurface* pDestSurface, LPCRECT lpDestRect, IDire
Menu::DrawButton(RECT{190, 104, 239, 133}, L"←", ChoosePrevProduct);
Menu::DrawButton(RECT{243, 104, 292, 133}, L"→", ChooseNextProduct);

CopyRenderResult((uint16_t*)ddsd.lpSurface, (uint32_t*)pPixels, ddsd.dwWidth, ddsd.dwHeight, ddsd.lPitch);

SelectObject(hdc, hOldBitmap);
DeleteObject(hBitmap);
DeleteDC(hdc);

pDestSurface->Unlock(NULL);
pDestSurface->ReleaseDC(hDC);

return hr;
}
Expand Down