2 replies to this topic

[afraidofdark]

Hello, 

I pass a material definition structure from c++ to hlsl however in the debug view I see some of the values are NAN

here is my c++, hlsl structure definitions and debug view results. Only unused0 must be NAN I use it as padding variable, however

all other float values are olso NAN I couldn't point out the problem here, may be you can

 

 C++ structure

struct MaterialData {

Vector3 diffuseColor;

float unused0;

Vector3 specularColor;

float specularLevel;

Vector3 ambientColor;

float glossiness;

};

 

Shader structure

struct material {

float3 diffuseColor;

float unused0;

float3 specularColor;

float specularLevel;

float3 ambientColor;

float glossiness;

};

 

Shader debug values

diffuseColor x = 0.588000000, y = 0.588000000, z = 0.588000000 float3

unused0 NaN float

specularColor x = 0.900000000, y = 0.900000000, z = 0.900000000 float3

specularLevel NaN float

ambientColor x = 0.588000000, y = 0.588000000, z = 0.588000000 float3

glossiness NaN float

 

[TiagoCosta]

It also seems right to me.

Try this though:
Change the specularColor to float4 in the shader struct and try to access the specularLevel in specularColor.w (do the same for ambientColor/glossiness).

You can also remove unused0 from the shader structure because hlsl adds padding automatically.

Also double check that the structure is correctly filled with data in C++.

Edited by TiagoCosta, 13 January 2013 - 05:15 PM.

[Jason Z]

Is you Vector3 class a subclass (that is, does it have any virtual methods) or is it a pure struct-type of object?  I wonder if the vtable could be causing some issues here...