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Viewport: Reduce unnecessary region redraws when scrolling viewports

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Jonathan G Rennison
2020-02-09 00:34:47 +00:00
parent 4d9e07e885
commit a152e2327c
11 changed files with 144 additions and 52 deletions
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15
src/gfx.cpp
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@@ -79,21 +79,6 @@ static uint _dirty_bytes_per_line = 0;
static byte *_dirty_blocks = nullptr;
extern uint _dirty_block_colour;
void GfxScroll(int left, int top, int width, int height, int xo, int yo)
{
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
if (xo == 0 && yo == 0) return;
if (_cursor.visible) UndrawMouseCursor();
if (_networking) NetworkUndrawChatMessage();
blitter->ScrollBuffer(_screen.dst_ptr, left, top, width, height, xo, yo);
/* This part of the screen is now dirty. */
VideoDriver::GetInstance()->MakeDirty(left, top, width, height);
}
/**
* Applies a certain FillRectMode-operation to a rectangle [left, right] x [top, bottom] on the screen.