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