Aegisub/vsfilter/subpic/DX7SubPic.cpp
Niels Martin Hansen 1fb4f58ff2 Import VSFilter from guliverkli.
Originally committed to SVN as r1399.
2007-07-09 18:33:44 +00:00

293 lines
7.5 KiB
C++

/*
* Copyright (C) 2003-2006 Gabest
* http://www.gabest.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include <ddraw.h>
#include <d3d.h>
#include "DX7SubPic.h"
//
// CDX7SubPic
//
CDX7SubPic::CDX7SubPic(IDirect3DDevice7* pD3DDev, IDirectDrawSurface7* pSurface)
: m_pSurface(pSurface)
, m_pD3DDev(pD3DDev)
{
DDSURFACEDESC2 ddsd;
INITDDSTRUCT(ddsd);
if(SUCCEEDED(m_pSurface->GetSurfaceDesc(&ddsd)))
{
m_maxsize.SetSize(ddsd.dwWidth, ddsd.dwHeight);
m_rcDirty.SetRect(0, 0, ddsd.dwWidth, ddsd.dwHeight);
}
}
// ISubPic
STDMETHODIMP_(void*) CDX7SubPic::GetObject()
{
return (void*)(IDirectDrawSurface7*)m_pSurface;
}
STDMETHODIMP CDX7SubPic::GetDesc(SubPicDesc& spd)
{
DDSURFACEDESC2 ddsd;
INITDDSTRUCT(ddsd);
if(FAILED(m_pSurface->GetSurfaceDesc(&ddsd)))
return E_FAIL;
spd.type = 0;
spd.w = m_size.cx;
spd.h = m_size.cy;
spd.bpp = (WORD)ddsd.ddpfPixelFormat.dwRGBBitCount;
spd.pitch = ddsd.lPitch;
spd.bits = ddsd.lpSurface; // should be NULL
spd.vidrect = m_vidrect;
return S_OK;
}
STDMETHODIMP CDX7SubPic::CopyTo(ISubPic* pSubPic)
{
HRESULT hr;
if(FAILED(hr = __super::CopyTo(pSubPic)))
return hr;
CPoint p = m_rcDirty.TopLeft();
hr = m_pD3DDev->Load((IDirectDrawSurface7*)pSubPic->GetObject(), &p, (IDirectDrawSurface7*)GetObject(), m_rcDirty, 0);
return SUCCEEDED(hr) ? S_OK : E_FAIL;
}
STDMETHODIMP CDX7SubPic::ClearDirtyRect(DWORD color)
{
if(m_rcDirty.IsRectEmpty())
return S_FALSE;
DDBLTFX fx;
INITDDSTRUCT(fx);
fx.dwFillColor = color;
m_pSurface->Blt(&m_rcDirty, NULL, NULL, DDBLT_WAIT|DDBLT_COLORFILL, &fx);
m_rcDirty.SetRectEmpty();
return S_OK;
}
STDMETHODIMP CDX7SubPic::Lock(SubPicDesc& spd)
{
DDSURFACEDESC2 ddsd;
INITDDSTRUCT(ddsd);
if(FAILED(m_pSurface->Lock(NULL, &ddsd, DDLOCK_SURFACEMEMORYPTR|DDLOCK_WAIT, NULL)))
return E_FAIL;
spd.type = 0;
spd.w = m_size.cx;
spd.h = m_size.cy;
spd.bpp = (WORD)ddsd.ddpfPixelFormat.dwRGBBitCount;
spd.pitch = ddsd.lPitch;
spd.bits = ddsd.lpSurface;
spd.vidrect = m_vidrect;
return S_OK;
}
STDMETHODIMP CDX7SubPic::Unlock(RECT* pDirtyRect)
{
m_pSurface->Unlock(NULL);
if(pDirtyRect)
{
m_rcDirty = *pDirtyRect;
m_rcDirty.InflateRect(1, 1);
m_rcDirty &= CRect(CPoint(0, 0), m_size);
}
else
{
m_rcDirty = CRect(CPoint(0, 0), m_size);
}
return S_OK;
}
STDMETHODIMP CDX7SubPic::AlphaBlt(RECT* pSrc, RECT* pDst, SubPicDesc* pTarget)
{
ASSERT(pTarget == NULL);
if(!m_pD3DDev || !m_pSurface || !pSrc || !pDst)
return E_POINTER;
CRect src(*pSrc), dst(*pDst);
HRESULT hr;
do
{
DDSURFACEDESC2 ddsd;
INITDDSTRUCT(ddsd);
if(FAILED(hr = m_pSurface->GetSurfaceDesc(&ddsd)))
break;
float w = (float)ddsd.dwWidth;
float h = (float)ddsd.dwHeight;
struct
{
float x, y, z, rhw;
float tu, tv;
}
pVertices[] =
{
{(float)dst.left, (float)dst.top, 0.5f, 2.0f, (float)src.left / w, (float)src.top / h},
{(float)dst.right, (float)dst.top, 0.5f, 2.0f, (float)src.right / w, (float)src.top / h},
{(float)dst.left, (float)dst.bottom, 0.5f, 2.0f, (float)src.left / w, (float)src.bottom / h},
{(float)dst.right, (float)dst.bottom, 0.5f, 2.0f, (float)src.right / w, (float)src.bottom / h},
};
/*
for(int i = 0; i < countof(pVertices); i++)
{
pVertices[i].x -= 0.5;
pVertices[i].y -= 0.5;
}
*/
hr = m_pD3DDev->SetTexture(0, m_pSurface);
m_pD3DDev->SetRenderState(D3DRENDERSTATE_CULLMODE, D3DCULL_NONE);
m_pD3DDev->SetRenderState(D3DRENDERSTATE_LIGHTING, FALSE);
m_pD3DDev->SetRenderState(D3DRENDERSTATE_BLENDENABLE, TRUE);
m_pD3DDev->SetRenderState(D3DRENDERSTATE_SRCBLEND, D3DBLEND_ONE); // pre-multiplied src and ...
m_pD3DDev->SetRenderState(D3DRENDERSTATE_DESTBLEND, D3DBLEND_SRCALPHA); // ... inverse alpha channel for dst
m_pD3DDev->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
m_pD3DDev->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
m_pD3DDev->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
m_pD3DDev->SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTFG_LINEAR);
m_pD3DDev->SetTextureStageState(0, D3DTSS_MINFILTER, D3DTFN_LINEAR);
m_pD3DDev->SetTextureStageState(0, D3DTSS_MIPFILTER, D3DTFP_LINEAR);
m_pD3DDev->SetTextureStageState(0, D3DTSS_ADDRESS, D3DTADDRESS_CLAMP);
/*//
D3DDEVICEDESC7 d3ddevdesc;
m_pD3DDev->GetCaps(&d3ddevdesc);
if(d3ddevdesc.dpcTriCaps.dwAlphaCmpCaps & D3DPCMPCAPS_LESS)
{
m_pD3DDev->SetRenderState(D3DRENDERSTATE_ALPHAREF, (DWORD)0x000000FE);
m_pD3DDev->SetRenderState(D3DRENDERSTATE_ALPHATESTENABLE, TRUE);
m_pD3DDev->SetRenderState(D3DRENDERSTATE_ALPHAFUNC, D3DPCMPCAPS_LESS);
}
*///
if(FAILED(hr = m_pD3DDev->BeginScene()))
break;
hr = m_pD3DDev->DrawPrimitive(D3DPT_TRIANGLESTRIP,
D3DFVF_XYZRHW | D3DFVF_TEX1,
pVertices, 4, D3DDP_WAIT);
m_pD3DDev->EndScene();
//
m_pD3DDev->SetTexture(0, NULL);
return S_OK;
}
while(0);
return E_FAIL;
}
//
// CDX7SubPicAllocator
//
CDX7SubPicAllocator::CDX7SubPicAllocator(IDirect3DDevice7* pD3DDev, SIZE maxsize, bool fPow2Textures)
: ISubPicAllocatorImpl(maxsize, true, fPow2Textures)
, m_pD3DDev(pD3DDev)
, m_maxsize(maxsize)
{
}
// ISubPicAllocator
STDMETHODIMP CDX7SubPicAllocator::ChangeDevice(IUnknown* pDev)
{
CComQIPtr<IDirect3DDevice7, &IID_IDirect3DDevice7> pD3DDev = pDev;
if(!pD3DDev) return E_NOINTERFACE;
CAutoLock cAutoLock(this);
m_pD3DDev = pD3DDev;
return __super::ChangeDevice(pDev);
}
// ISubPicAllocatorImpl
bool CDX7SubPicAllocator::Alloc(bool fStatic, ISubPic** ppSubPic)
{
if(!ppSubPic)
return(false);
CAutoLock cAutoLock(this);
DDSURFACEDESC2 ddsd;
INITDDSTRUCT(ddsd);
ddsd.dwFlags = DDSD_CAPS|DDSD_WIDTH|DDSD_HEIGHT|DDSD_PIXELFORMAT;
ddsd.ddsCaps.dwCaps = DDSCAPS_TEXTURE | (fStatic ? DDSCAPS_SYSTEMMEMORY : 0);
ddsd.ddsCaps.dwCaps2 = fStatic ? 0 : (DDSCAPS2_TEXTUREMANAGE|DDSCAPS2_HINTSTATIC);
ddsd.dwWidth = m_maxsize.cx;
ddsd.dwHeight = m_maxsize.cy;
ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
ddsd.ddpfPixelFormat.dwFlags = DDPF_RGB|DDPF_ALPHAPIXELS;
ddsd.ddpfPixelFormat.dwRGBBitCount = 32;
ddsd.ddpfPixelFormat.dwRGBAlphaBitMask = 0xFF000000;
ddsd.ddpfPixelFormat.dwRBitMask = 0x00FF0000;
ddsd.ddpfPixelFormat.dwGBitMask = 0x0000FF00;
ddsd.ddpfPixelFormat.dwBBitMask = 0x000000FF;
if(m_fPow2Textures)
{
ddsd.dwWidth = ddsd.dwHeight = 1;
while(ddsd.dwWidth < m_maxsize.cx) ddsd.dwWidth <<= 1;
while(ddsd.dwHeight < m_maxsize.cy) ddsd.dwHeight <<= 1;
}
CComPtr<IDirect3D7> pD3D;
CComQIPtr<IDirectDraw7, &IID_IDirectDraw7> pDD;
if(FAILED(m_pD3DDev->GetDirect3D(&pD3D)) || !pD3D || !(pDD = pD3D))
return(false);
CComPtr<IDirectDrawSurface7> pSurface;
if(FAILED(pDD->CreateSurface(&ddsd, &pSurface, NULL)))
return(false);
if(!(*ppSubPic = new CDX7SubPic(m_pD3DDev, pSurface)))
return(false);
(*ppSubPic)->AddRef();
return(true);
}