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GAH there are turds at the bottom and I can't fix them

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This commit is contained in:
Mike Griese 2021-07-28 16:40:32 -05:00
parent a67478c382
commit 207522a93a
1 changed files with 15 additions and 5 deletions
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20
src/renderer/dx/DxRenderer.cpp
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@ -1381,7 +1381,8 @@ try
std::swap(_d2dBitmap, _d2dOtherBitmap);
// Figure out how much of the screen to scroll, and where to scroll it to.
til::point scrollInPixels = _invalidScroll * _fontRenderData->GlyphCell();
til::size glyphSize{ _fontRenderData->GlyphCell() };
til::point scrollInPixels = _invalidScroll * glyphSize;
til::point sourceOrigin{ 0, 0 };
// D2D_POINT_2U is an unsigned point, it won't accept negative
// numbers. If we want to scroll the frame contents up (s.t. delta.y
@ -1394,10 +1395,19 @@ try
}
D2D_POINT_2U tgtPos{ scrollInPixels.x<uint32_t>(),
scrollInPixels.y<uint32_t>() };
D2D1_RECT_U srcRect{ sourceOrigin.x<uint32_t>(),
sourceOrigin.y<uint32_t>(),
_displaySizePixels.width<uint32_t>(),
_displaySizePixels.height<uint32_t>() };
// auto heightOffset = std::max(sourceOrigin.y<uint32_t>(), scrollInPixels.y<uint32_t>());
auto heightOffset = sourceOrigin.y<uint32_t>();
til::size realBufferSize{ _lastBufferSize * glyphSize };
til::size srcDimensions{ realBufferSize.width() - sourceOrigin.x(),
realBufferSize.height() - heightOffset };
til::rectangle source{ sourceOrigin, srcDimensions };
D2D1_RECT_U srcRect{
source.left<uint32_t>(),
source.top<uint32_t>(),
source.right<uint32_t>(),
source.bottom<uint32_t>(),
};
// Get our _d2dDeviceContext as a ID2D1RenderTarget
Microsoft::WRL::ComPtr<ID2D1RenderTarget> otherRenderTarget;