使用DirectX来渲染位图

// DxShowImage.h

#ifndef _DXSHOWIMAGE_H_#define _DXSHOWIMAGE_H_#include <d3d9.h>#define SAFE_RELEASE(p) /if (p)/{/p->Release();/p = NULL;/}#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_TEX1)struct CUSTOMVERTEX{ float x, y, z; float u, v;};class CDxShowImage{public:CDxShowImage();~CDxShowImage();public:bool Init(HWND hWnd);void Uninit(); // 有完整拉伸bool ShowImageByTexture(const char* szFileName);bool ShowImageByTexture(const char* pbSrcData, int iSrcDataSize); bool ShowImageByOffscreen(const char* szFileName, int w, int h); bool ShowImageByOffscreen(const char* pbSrcData, int iSrcDataSize, int w, int h); // 无完整拉伸 bool ShowImageBySurface(const char* szFileName); bool ShowImageBySurface(const char* pbSrcData, int iSrcDataSize); bool ShowImageByBackBuffer(const char* szFileName); bool ShowImageByBackBuffer(const char* pbSrcData, int iSrcDataSize);private:LPDIRECT3D9 m_pD3D;LPDIRECT3DDEVICE9 m_pD3D_Device;LPDIRECT3DVERTEXBUFFER9 m_pD3D_VB;LPDIRECT3DTEXTURE9 m_pD3D_Texture;};#endif

 

// DxShowImage.cpp

#include "stdafx.h" // for MFC#include "DxShowImage.h"#include <d3dx9math.h>#pragma comment(lib,"d3d9.lib")#pragma comment(lib,"d3dx9.lib")CDxShowImage::CDxShowImage(){ m_pD3D = NULL; m_pD3D_Device = NULL; m_pD3D_VB = NULL; m_pD3D_Texture = NULL;}CDxShowImage::~CDxShowImage(){ Uninit();}bool CDxShowImage::Init(HWND hWnd){ D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp, sizeof(d3dpp)); d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.BackBufferFormat = D3DFMT_UNKNOWN; m_pD3D = Direct3DCreate9(D3D_SDK_VERSION); if ( NULL == m_pD3D ) { Uninit(); return false; } if ( FAILED(m_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &m_pD3D_Device )) ) { Uninit(); return false; } m_pD3D_Device->SetRenderState(D3DRS_LIGHTING, FALSE); m_pD3D_Device->SetSamplerState(0, D3DSAMP_ADDRESSU, D3DTADDRESS_BORDER); m_pD3D_Device->SetSamplerState(0, D3DSAMP_ADDRESSV, D3DTADDRESS_BORDER); CUSTOMVERTEX rgVertices[] = { { -1.0f,-1.0f, 0.0f, 0.0f, 1.0f }, { -1.0f, 1.0f, 0.0f, 0.0f, 0.0f }, { 1.0f,-1.0f, 0.0f, 1.0f, 1.0f }, { 1.0f, 1.0f, 0.0f, 1.0f, 0.0f }, }; if ( FAILED(m_pD3D_Device->CreateVertexBuffer( sizeof(rgVertices), 0, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &m_pD3D_VB, NULL )) ) { Uninit(); return false; } VOID* pVertices = NULL; if ( FAILED(m_pD3D_VB->Lock(0, sizeof(rgVertices), (void**)&pVertices, 0)) ) { Uninit(); return false; } memcpy(pVertices, rgVertices, sizeof(rgVertices)); m_pD3D_VB->Unlock(); return true;}void CDxShowImage::Uninit(){ SAFE_RELEASE(m_pD3D_Texture); SAFE_RELEASE(m_pD3D_VB); SAFE_RELEASE(m_pD3D_Device); SAFE_RELEASE(m_pD3D);}bool CDxShowImage::ShowImageByTexture(const char* szFileName){ bool fRet = false; if ( m_pD3D_Device ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); if ( SUCCEEDED( m_pD3D_Device->BeginScene() ) ) { if ( SUCCEEDED(D3DXCreateTextureFromFile(m_pD3D_Device, szFileName, &m_pD3D_Texture)) ) { m_pD3D_Device->SetTexture(0, m_pD3D_Texture); m_pD3D_Device->SetStreamSource(0, m_pD3D_VB, 0, sizeof(CUSTOMVERTEX)); m_pD3D_Device->SetFVF(D3DFVF_CUSTOMVERTEX); m_pD3D_Device->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2); fRet = true; } m_pD3D_Device->EndScene(); } m_pD3D_Device->Present(NULL, NULL, NULL, NULL); } return fRet;}bool CDxShowImage::ShowImageByTexture(const char* pbSrcData, int iSrcDataSize){ bool fRet = false; if ( m_pD3D_Device ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); if ( SUCCEEDED( m_pD3D_Device->BeginScene() ) ) { if ( SUCCEEDED(D3DXCreateTextureFromFileInMemory(m_pD3D_Device, pbSrcData, iSrcDataSize, &m_pD3D_Texture)) ) { m_pD3D_Device->SetTexture(0, m_pD3D_Texture); m_pD3D_Device->SetStreamSource(0, m_pD3D_VB, 0, sizeof(CUSTOMVERTEX)); m_pD3D_Device->SetFVF(D3DFVF_CUSTOMVERTEX); m_pD3D_Device->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2); fRet = true; } m_pD3D_Device->EndScene(); } m_pD3D_Device->Present(NULL, NULL, NULL, NULL); } return fRet;}bool CDxShowImage::ShowImageBySurface(const char* szFileName){ bool fRet = false; IDirect3DSurface9* pRenderTarget = NULL; if ( S_OK == m_pD3D_Device->GetRenderTarget(0, &pRenderTarget) ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); if ( S_OK == D3DXLoadSurfaceFromFile( pRenderTarget, NULL, NULL, szFileName, NULL, D3DX_FILTER_NONE, 0, NULL) ) { m_pD3D_Device->Present(NULL, NULL, NULL, NULL); fRet = true; } SAFE_RELEASE(pRenderTarget); } return fRet;}bool CDxShowImage::ShowImageBySurface(const char* pbSrcData, int iSrcDataSize){ bool fRet = false; IDirect3DSurface9* pRenderTarget = NULL; if ( S_OK == m_pD3D_Device->GetRenderTarget(0, &pRenderTarget) ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); if ( S_OK == D3DXLoadSurfaceFromFileInMemory( pRenderTarget, NULL, NULL, pbSrcData, iSrcDataSize, NULL, D3DX_FILTER_NONE, 0, NULL) ) { m_pD3D_Device->Present(NULL, NULL, NULL, NULL); fRet = true; } SAFE_RELEASE(pRenderTarget); } return fRet;}bool CDxShowImage::ShowImageByOffscreen(const char* szFileName, int w, int h){ bool fRet = false; IDirect3DSurface9* pRenderTarget = NULL; if ( S_OK == m_pD3D_Device->CreateOffscreenPlainSurface( w, h, D3DFMT_X8R8G8B8, D3DPOOL_DEFAULT, &pRenderTarget, NULL) ) { if ( S_OK == D3DXLoadSurfaceFromFile( pRenderTarget, NULL, NULL, szFileName, NULL, D3DX_FILTER_NONE, 0, NULL) ) { IDirect3DSurface9* backBuffer = NULL; if ( S_OK == m_pD3D_Device->GetBackBuffer(0,0,D3DBACKBUFFER_TYPE_MONO,&backBuffer) ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); m_pD3D_Device->StretchRect(pRenderTarget,0,backBuffer,0,D3DTEXF_NONE); m_pD3D_Device->Present(NULL, NULL, NULL, NULL); SAFE_RELEASE(backBuffer); fRet = true; } } SAFE_RELEASE(pRenderTarget); } return fRet;}bool CDxShowImage::ShowImageByOffscreen(const char* pbSrcData, int iSrcDataSize, int w, int h){ bool fRet = false; IDirect3DSurface9* pRenderTarget = NULL; if ( S_OK == m_pD3D_Device->CreateOffscreenPlainSurface( w, h, D3DFMT_X8R8G8B8, D3DPOOL_DEFAULT, &pRenderTarget, NULL) ) { if ( S_OK == D3DXLoadSurfaceFromFileInMemory( pRenderTarget, NULL, NULL, pbSrcData, iSrcDataSize, NULL, D3DX_FILTER_NONE, 0, NULL) ) { IDirect3DSurface9* backBuffer = NULL; if ( S_OK == m_pD3D_Device->GetBackBuffer(0,0,D3DBACKBUFFER_TYPE_MONO,&backBuffer) ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); m_pD3D_Device->StretchRect(pRenderTarget,0,backBuffer,0,D3DTEXF_NONE); m_pD3D_Device->Present(NULL, NULL, NULL, NULL); SAFE_RELEASE(backBuffer); fRet = true; } } SAFE_RELEASE(pRenderTarget); } return fRet;}bool CDxShowImage::ShowImageByBackBuffer(const char* szFileName){ bool fRet = false; IDirect3DSurface9* backBuffer = NULL; if ( S_OK == m_pD3D_Device->GetBackBuffer(0,0,D3DBACKBUFFER_TYPE_MONO,&backBuffer) ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); if ( S_OK == D3DXLoadSurfaceFromFile( backBuffer, NULL, NULL, szFileName, NULL, D3DX_FILTER_NONE, 0, NULL) ) { m_pD3D_Device->Present(NULL, NULL, NULL, NULL); fRet = true; } SAFE_RELEASE(backBuffer); } return fRet;}bool CDxShowImage::ShowImageByBackBuffer(const char* pbSrcData, int iSrcDataSize){ bool fRet = false; IDirect3DSurface9* backBuffer = NULL; if ( S_OK == m_pD3D_Device->GetBackBuffer(0,0,D3DBACKBUFFER_TYPE_MONO,&backBuffer) ) { m_pD3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255,255,255), 1.0f, 0); if ( S_OK == D3DXLoadSurfaceFromFileInMemory( backBuffer, NULL, NULL, pbSrcData, iSrcDataSize, NULL, D3DX_FILTER_NONE, 0, NULL) ) { m_pD3D_Device->Present(NULL, NULL, NULL, NULL); fRet = true; } SAFE_RELEASE(backBuffer); } return fRet;}