81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
#include "Render/DCSurface.h"
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#include "Render/DeviceOwnerDX7.h"
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#include "Render/RendererBackBuffer.h"
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#include "Render/RendererPresentationDX7.h"
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#include <bit>
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#include <cstdio>
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#include <cstring>
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#include <mmsystem.h>
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#include <utility>
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// OFFSET: 0x0055B000
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// FUNCTION: fn_02087
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void RendererPresentationDX7::Present(DeviceOwnerDX7& owner, bool wait, const RECT& monitor) {
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++this->frame;
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const unsigned elapsed = GetTickCount() - this->lastTick;
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if (static_cast<float>(elapsed) < 1000.0f) {
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++this->samples;
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} else {
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this->lastTick = GetTickCount();
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this->rate = this->samples;
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this->samples = 0;
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}
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if (owner.RestoreLostSurfaces()) {
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return;
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}
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if (this->backBuffer.Lock(owner)) {
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this->backBuffer.Unlock(owner);
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}
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if (owner.Present(wait, monitor) == DDERR_SURFACELOST) {
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owner.MarkSurfacesLost();
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}
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}
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// OFFSET: 0x0055D0F0
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// FUNCTION: fn_02096
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float RendererPresentationDX7::FPS() const {
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return static_cast<float>(this->rate);
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}
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// OFFSET: 0x0055F8F0
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// FUNCTION: fn_02120
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void RendererPresentationDX7::DrawFPS(CRenderSystemBase* system, int width, int height) {
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const unsigned previous = this->lastTick;
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const unsigned elapsed = timeGetTime() - previous;
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const unsigned count = this->samples;
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const float measured = (static_cast<float>(count) * 1000.0f) / static_cast<float>(elapsed);
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if (elapsed > 1000 && !(count & 1)) {
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this->samples = count >> 1;
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this->lastTick = previous + (elapsed >> 1);
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}
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char text[128];
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std::sprintf(text, "%.01f fps", static_cast<double>(measured));
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CDCSurface drawing(AcquireBackBufferSurface(system));
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HDC dc = nullptr;
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drawing.GetDC(&dc);
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HGDIOBJ font = nullptr;
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if (dc) {
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font = GetCurrentObject(dc, OBJ_FONT);
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SetBkMode(dc, TRANSPARENT);
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}
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// The original records font selection in its text context, then calls GDI
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// TextOutA directly, bypassing the context operation that selects that font.
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SetTextColor(dc, 0xFFFF);
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const int x = width - 40;
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const int y = height - 14;
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TextOutA(dc, x, y, text, static_cast<int>(std::strlen(text)));
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if (dc) {
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SelectObject(dc, font);
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drawing.ReleaseDC(dc);
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}
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}
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