mirror of
https://github.com/chibicitiberiu/rainmeter-studio.git
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5f03d7b235
It seems that Direct2D does not expect the underlying pixel data of the render target to change outside of the target draw commands while the render target exists. As a result, Direct2D may in some cases overwrite changes to the pixel data. This change changes the render target to be (re)created for each batch of Direct2D drawing operations as a temporary solution. As a side effect, a DIB section is now used as the render target bitmap.
134 lines
3.1 KiB
C++
134 lines
3.1 KiB
C++
/*
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Copyright (C) 2013 Birunthan Mohanathas
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "WICBitmapDIB.h"
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#include "WICBitmapLockDIB.h"
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#include <cassert>
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namespace Gfx {
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WICBitmapDIB::WICBitmapDIB() :
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m_DIBSectionBuffer(),
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m_DIBSectionBufferPixels(),
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m_W(0),
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m_H(0)
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{
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}
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WICBitmapDIB::~WICBitmapDIB()
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{
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if (m_DIBSectionBuffer)
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{
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DeleteObject(m_DIBSectionBuffer);
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m_DIBSectionBufferPixels = nullptr;
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}
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}
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void WICBitmapDIB::Resize(UINT w, UINT h)
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{
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if (m_DIBSectionBuffer)
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{
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DeleteObject(m_DIBSectionBuffer);
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m_DIBSectionBufferPixels = nullptr;
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}
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m_W = w;
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m_H = h;
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BITMAPV4HEADER bh = {sizeof(BITMAPV4HEADER)};
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bh.bV4Width = (LONG)m_W;
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bh.bV4Height = -(LONG)m_H; // Top-down DIB
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bh.bV4Planes = 1;
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bh.bV4BitCount = 32;
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bh.bV4V4Compression = BI_BITFIELDS;
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bh.bV4RedMask = 0x00FF0000;
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bh.bV4GreenMask = 0x0000FF00;
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bh.bV4BlueMask = 0x000000FF;
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bh.bV4AlphaMask = 0xFF000000;
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m_DIBSectionBuffer = CreateDIBSection(
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nullptr,
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(BITMAPINFO*)&bh,
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DIB_RGB_COLORS,
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(void**)&m_DIBSectionBufferPixels,
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nullptr,
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0);
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assert(m_DIBSectionBufferPixels);
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}
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IFACEMETHODIMP WICBitmapDIB::QueryInterface(REFIID riid, void** ppvObject)
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{
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return E_NOTIMPL;
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}
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IFACEMETHODIMP_(ULONG) WICBitmapDIB::AddRef()
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{
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return 0;
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}
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IFACEMETHODIMP_(ULONG) WICBitmapDIB::Release()
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{
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return 0;
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}
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IFACEMETHODIMP WICBitmapDIB::GetSize(UINT* puiWidth, UINT* puiHeight)
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{
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if (puiWidth) *puiWidth = m_W;
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if (puiHeight) *puiHeight = m_H;
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return S_OK;
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}
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IFACEMETHODIMP WICBitmapDIB::GetPixelFormat(WICPixelFormatGUID* pPixelFormat)
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{
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*pPixelFormat = GUID_WICPixelFormat32bppPBGRA;
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return S_OK;
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}
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IFACEMETHODIMP WICBitmapDIB::GetResolution(double* pDpiX, double* pDpiY)
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{
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return E_NOTIMPL;
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}
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IFACEMETHODIMP WICBitmapDIB::CopyPalette(IWICPalette* pIPalette)
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{
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return E_NOTIMPL;
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}
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IFACEMETHODIMP WICBitmapDIB::CopyPixels(const WICRect* prc, UINT cbStride, UINT cbBufferSize, BYTE* pbBuffer)
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{
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return E_NOTIMPL;
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}
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IFACEMETHODIMP WICBitmapDIB::Lock(const WICRect* prcLock, DWORD flags, IWICBitmapLock** ppILock)
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{
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if (ppILock) *ppILock = (IWICBitmapLock*)new WICBitmapLockDIB(this, prcLock);
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return S_OK;
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}
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IFACEMETHODIMP WICBitmapDIB::SetPalette(IWICPalette* pIPalette)
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{
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return E_NOTIMPL;
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}
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IFACEMETHODIMP WICBitmapDIB::SetResolution(double dpiX, double dpiY)
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{
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return E_NOTIMPL;
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}
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} // namespace Gfx
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