float4x4 WorldViewProj : register(c0);D3DXMATRIXA16 matWorldViewProj;[dx9] setting a shader constant?
Author
hi,
how would i set a matrix that i defined in my vertex shader like:
If you're not using ID3DXConstantTable or ID3DXEffect, you have to use IDirect3DDevice9::SetVertexShaderConstantF. In your case you would pass "0" as your start register.
Author
thanks for your reply
i've initially used the table but now i've switched to IDirect3DDevice9::SetVertexShaderConstantF
but now I dont get the geometry on my screen anymore. it worked with the constant table
i've initially used the table but now i've switched to IDirect3DDevice9::SetVertexShaderConstantF
result = app.getDevice()->SetVertexShaderConstantF(0, &matWorldViewProj._11, 4);but now I dont get the geometry on my screen anymore. it worked with the constant table
thanks for your reply
i've initially used the table but now i've switched to IDirect3DDevice9::SetVertexShaderConstantF
result = app.getDevice()->SetVertexShaderConstantF(0, &matWorldViewProj._11, 4);
but now I dont get the geometry on my screen anymore. it worked with the constant table
It should be 16 in the last parameters of SetVertexShaderConstantF, not 4. A matrix is made of 16 floats. So your're just passing the only 4 elements, not the whole matrix.
It should be 16 in the last parameters of SetVertexShaderConstantF, not 4. A matrix is made of 16 floats. So your're just passing the only 4 elements, not the whole matrix.
https://msdn.microsoft.com/en-us/library/windows/desktop/bb174467%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396
No, 4 is correct:
Number of four float vectors in the array of constants.
but now I dont get the geometry on my screen anymore. it worked with the constant table
Do you need to transpose your matrix?
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