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Make sure all GraphicsBitmap scanlines are 16-byte aligned.

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This is a prerequisite for some optimizations.
This commit is contained in:
Andreas Kling
2019-05-06 14:04:54 +02:00
parent fafdda8902
commit cec16105cc
5 changed files with 29 additions and 24 deletions
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3
LibGUI/GWindow.cpp
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@@ -473,7 +473,8 @@ Retained<GraphicsBitmap> GWindow::create_backing_bitmap(const Size& size)
{
ASSERT(GEventLoop::server_pid());
ASSERT(!size.is_empty());
size_t size_in_bytes = size.area() * sizeof(RGBA32);
size_t pitch = round_up_to_power_of_two(size.width() * sizeof(RGBA32), 16);
size_t size_in_bytes = size.height() * pitch;
auto shared_buffer = SharedBuffer::create(GEventLoop::server_pid(), size_in_bytes);
ASSERT(shared_buffer);
auto format = m_has_alpha_channel ? GraphicsBitmap::Format::RGBA32 : GraphicsBitmap::Format::RGB32;