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DX9 Conversion question

Started by MagTDK Feb 18, 2003 at 1:28 PM 0 replies 2.2k views

Original Post

Feb 18, 2003 at 1:28 PM

In DX8.1, I coded the following:

  
DWORD TweenShader;

DWORD ShaderDeclaration[] =
{
D3DVSD_STREAM(0),
D3DVSD_REG(D3DVSDE_POSITION,   D3DVSDT_FLOAT3),
D3DVSD_STREAM(1),
D3DVSD_REG(D3DVSDE_DIFFUSE, D3DVSDT_D3DCOLOR),
D3DVSD_STREAM(2),
D3DVSD_REG(D3DVSDE_TEXCOORD0,  D3DVSDT_FLOAT2),
D3DVSD_STREAM(3),
D3DVSD_REG(D3DVSDE_POSITION2,  D3DVSDT_FLOAT3),
D3DVSD_END()
};

pDevice->CreateVertexShader (ShaderDeclaration, NULL, &TweenShader, 0);

// In my rendering function.

pDDevice->SetVertexShader (TweenShader);

Now I''m trying to convert this to DX9 but am having problems. Here''s what I have:

  
D3DVERTEXELEMENT9 ShaderDeclaration[] =
{
{0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},
{1, 0, D3DDECLTYPE_D3DCOLOR, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_COLOR, 0},
{2, 0, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 0},
{3, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},
D3DDECL_END()
};

How do I go about creating the vertex shader?

Jim Adams

Feb 18, 2003 at 2:52 PM

You might want to correct that declaration to:

D3DVERTEXELEMENT9 ShaderDeclaration[] = {

{0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},

{0, 12, D3DDECLTYPE_D3DCOLOR, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_COLOR, 0},

{0, 16, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 0},

{0, 24, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 1},

D3DDECL_END()

};

The 1st number is the stream, the 2nd number is the byte offset, the 3rd is usage type, 4th is suggested data type, and 5th is type index (position0, position1, etc).

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