标签：direct3d directx 游戏编程 游戏开发 effect
一、程序部分
1、几个全局变量的定义：
ID3DXEffect* g_pEffect = NULL; D3DXMATRIXA16 g_mCenterWorld; D3DXHANDLE g_hWorld = NULL; D3DXHANDLE g_hWorldViewProjection = NULL; D3DXHANDLE g_hTechniqueRenderScene = NULL;
bool IsDeviceAcceptable(D3DCAPS9* pCaps,D3DFORMAT AdapterFormat,D3DFORMAT BackBufferFormat,bool bWindowed,void* pUserContext)
{
if( pCaps->PixelShaderVersion < D3DPS_VERSION( 2, 0 ) ) //检查像素着色器
return false;<pre name="code" class="cpp"> //<span style="font-family: Arial; font-size: 14px; line-height: 26px;">渲染一个</span><span style="font-size: 14px; line-height: 26px; font-family: Calibri;">surface</span><span style="font-family: Arial; font-size: 14px; line-height: 26px;">时，通常要检查这个</span><span style="font-size: 14px; line-height: 26px; font-family: Calibri;">surface</span><span style="font-family: Arial; font-size: 14px; line-height: 26px;">的</span><span style="font-family: Arial; font-size: 14px; line-height: 26px;">格式</span><span style="font-family: Arial; font-size: 14px; line-height: 26px;">是否可以用于</span><span style="font-size: 14px; line-height: 26px; font-family: Calibri;">texture</span><span style="font-family: Arial; font-size: 14px; line-height: 26px;">、</span><span style="font-size: 14px; line-height: 26px; font-family: Calibri;">rendertarget</span><span style="font-family: Arial; font-size: 14px; line-height: 26px;">、</span><span style="font-size: 14px; line-height: 26px; font-family: Calibri;">depth-stenil buffer</span>IDirect3D9* pD3D = DXUTGetD3D9Object(); if( FAILED( pD3D->CheckDeviceFormat( pCaps->AdapterOrdinal, pCaps->DeviceType, AdapterFormat, D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, D3DRTYPE_TEXTURE, BackBufferFormat ) ) ) return false; return true;}
HRESULT D3DXCreateEffectFromFile(
_In_ LPDIRECT3DDEVICE9 pDevice, //D3D设备
_In_ LPCTSTR pSrcFile, //待载入的文件名或路径
_In_ const D3DXMACRO *pDefines,
_In_ LPD3DXINCLUDE pInclude,
_In_ DWORD Flags,
_In_ LPD3DXEFFECTPOOL pPool,
_Out_ LPD3DXEFFECT *ppEffect,
_Out_ LPD3DXBUFFER *ppCompilationErrors
);
typedef struct D3DXMACRO { LPCSTR Name; LPCSTR Definition; } D3DXMACRO, *LPD3DXMACRO;
HRESULT OnCreateLoadFile(IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc,void* pUserContext )
{
DXUTFindDXSDKMediaFileCch( str, MAX_PATH, TEXT( "CompiledEffect.fxo" ) ); //查找文件路径
V_RETURN( D3DXCreateEffectFromFile( pd3dDevice, str, NULL, NULL, D3DXFX_NOT_CLONEABLE, NULL, &g_pEffect, NULL ) );
return S_OK;
}
4、获得效果文件中的变量句柄
HRESULT GetEffectParameterHandle( IDirect3DDevice9* pd3dDevice,
const D3DSURFACE_DESC* pBackBufferSurfaceDesc, void* pUserContext )
{
D3DXCOLOR colorMtrlDiffuse( 1.0f, 1.0f, 1.0f, 1.0f );
D3DXCOLOR colorMtrlAmbient( 0.35f, 0.35f, 0.35f, 0 );
g_pEffect->SetVector( "g_MaterialAmbientColor", ( D3DXVECTOR4* )&colorMtrlAmbient ); //设置全局变量
g_pEffect->SetVector( "g_MaterialDiffuseColor", ( D3DXVECTOR4* )&colorMtrlDiffuse );
g_hTechniqueRenderScene = g_pEffect->GetTechniqueByName( "RenderScene" ); //获得效果
g_hTime = g_pEffect->GetParameterByName( NULL, "g_fTime" );
g_hWorld = g_pEffect->GetParameterByName( NULL, "g_mWorld" );
g_hWorldViewProjection = g_pEffect->GetParameterByName( NULL, "g_mWorldViewProjection" );
g_hMeshTexture = g_pEffect->GetParameterByName( NULL, "g_MeshTexture" );
return S_OK;
}
void SetEffectParater(double fTime, float fElapsedTime, void* pUserContext)
{
D3DXMATRIXA16 mWorld;
D3DXMATRIXA16 mView;
D3DXMATRIXA16 mProj;
D3DXMATRIXA16 mWorldViewProjection;
mWorld = g_mCenterWorld * *g_Camera.GetWorldMatrix();
mProj = *g_Camera.GetProjMatrix();
mView = *g_Camera.GetViewMatrix();
mWorldViewProjection = mWorld * mView * mProj;
g_pEffect->SetMatrix( g_hWorldViewProjection, &mWorldViewProjection );
g_pEffect->SetMatrix( g_hWorld, &mWorld );
g_pEffect->SetFloat( g_hTime, ( float )fTime );
}
void RenderEffect(IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext)
{
pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB( 0, 45, 50, 70 ), 1.0f, 0 );
pd3dDevice->BeginScene()
UINT iPass, cPasses; //效果渲染
g_pEffect->Begin( &cPasses, 0);
for( iPass = 0; iPass < cPasses; iPass++ )
{
g_pEffect->BeginPass( iPass );
//其他事务渲染
g_pEffect->EndPass(); }
g_pEffect->End();
pd3dDevice->EndScene();
}
void OnLostDevice()
{
if( g_pEffect )
g_pEffect->OnLostDevice();
}
void OnDestroyDevice()
{
SAFE_RELEASE( g_pEffect );
}
//全局变量
float4 g_MaterialAmbientColor;
float4 g_MaterialDiffuseColor;
float3 g_LightDir = normalize(float3(1.0f, 1.0f, -1.0f));
float4 g_LightAmbient = { 0.2f, 0.2f, 0.2f, 0.2f };
float4 g_LightDiffuse = { 1.0f, 1.0f, 1.0f, 1.0f };
texture g_RenderTargetTexture; //全屏渲染目标纹理
float g_fTime;
float4x4 g_mWorld;
float4x4 g_mWorldViewProjection;
sampler RenderTargetSampler =
sampler_state
{
Texture = <g_RenderTargetTexture>;
MinFilter = POINT;
MagFilter = POINT;
MipFilter = NONE;
AddressU = Clamp;
AddressV = Clamp;
};
struct VS_OUTPUT
{
float4 Position : POSITION;
float4 Diffuse : COLOR0;
float2 TextureUV : TEXCOORD0;
};
VS_OUTPUT RenderSceneVS( float4 vPos : POSITION,
float3 vNormal : NORMAL,
float2 vTexCoord0 : TEXCOORD0 )
{
VS_OUTPUT Output;
float3 vNormalWorldSpace;
float4 vAnimatedPos = vPos;
vAnimatedPos.x *= (1.0 + cos(g_fTime)/10);
vAnimatedPos.y *= (1.0 + sin(g_fTime)/10);
vAnimatedPos.z *= (1.0 + cos(g_fTime)/10);
Output.Position = mul(vAnimatedPos, g_mWorldViewProjection);
vNormalWorldSpace = normalize(mul(vNormal, (float3x3)g_mWorld));
Output.Diffuse.rgb = g_MaterialDiffuseColor * g_LightDiffuse * max(0,dot(vNormalWorldSpace, g_LightDir)) +
g_MaterialAmbientColor * g_LightAmbient;
Output.Diffuse.a = 1.0f;
Output.TextureUV = vTexCoord0;
return Output;
}
struct PS_OUTPUT
{
float4 RGBColor : COLOR0;
};
PS_OUTPUT RenderScenePS( VS_OUTPUT In )
{
PS_OUTPUT Output;
Output.RGBColor = tex2D(MeshTextureSampler, In.TextureUV) * In.Diffuse;
return Output;
}
technique RenderScene
{
pass P0
{
ZENABLE = true; //Z-buffer
VertexShader = compile vs_2_0 RenderSceneVS();
PixelShader = compile ps_2_0 RenderScenePS();
}
}标签：direct3d directx 游戏编程 游戏开发 effect
原文地址：http://blog.csdn.net/a809146548/article/details/43915981
