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Codechange: [OpenGL] Only update the dirty parts of the video buffer texture.

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This commit is contained in:
Michael Lutz
2021-02-21 00:35:35 +01:00
parent 3a77ade6b2
commit 5ad545dcc1
4 changed files with 20 additions and 10 deletions
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16
src/video/win32_v.cpp
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@@ -64,8 +64,6 @@ static std::condition_variable_any *_draw_signal = nullptr;
static volatile bool _draw_continue;
/** Local copy of the palette for use in the drawing thread. */
static Palette _local_palette;
/** Region of the screen that needs redrawing. */
static Rect _dirty_rect;
bool VideoDriver_Win32Base::ClaimMousePointer()
{
@@ -886,7 +884,7 @@ void VideoDriver_Win32Base::Stop()
void VideoDriver_Win32Base::MakeDirty(int left, int top, int width, int height)
{
Rect r = {left, top, left + width, top + height};
_dirty_rect = BoundingRect(_dirty_rect, r);
this->dirty_rect = BoundingRect(this->dirty_rect, r);
}
void VideoDriver_Win32Base::CheckPaletteAnim()
@@ -1243,7 +1241,7 @@ void VideoDriver_Win32GDI::Paint()
{
PerformanceMeasurer framerate(PFE_VIDEO);
if (IsEmptyRect(_dirty_rect)) return;
if (IsEmptyRect(this->dirty_rect)) return;
HDC dc = GetDC(this->main_wnd);
HDC dc2 = CreateCompatibleDC(dc);
@@ -1279,7 +1277,7 @@ void VideoDriver_Win32GDI::Paint()
ReleaseDC(this->main_wnd, dc);
_dirty_rect = {};
this->dirty_rect = {};
}
void VideoDriver_Win32GDI::PaintThread()
@@ -1446,6 +1444,8 @@ bool VideoDriver_Win32OpenGL::AllocateBackingStore(int w, int h, bool force)
if (this->gl_rc == nullptr) return false;
this->dirty_rect = {};
bool res = OpenGLBackend::Get()->Resize(w, h);
_wnd.buffer_bits = OpenGLBackend::Get()->GetVideoBuffer();
return res;
@@ -1455,6 +1455,8 @@ void VideoDriver_Win32OpenGL::Paint()
{
PerformanceMeasurer framerate(PFE_VIDEO);
if (IsEmptyRect(this->dirty_rect)) return;
if (_cur_palette.count_dirty != 0) {
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
@@ -1473,8 +1475,10 @@ void VideoDriver_Win32OpenGL::Paint()
_cur_palette.count_dirty = 0;
}
OpenGLBackend::Get()->Paint();
OpenGLBackend::Get()->Paint(this->dirty_rect);
SwapBuffers(this->dc);
this->dirty_rect = {};
}
#endif /* WITH_OPENGL */