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Archivampire

How to include in *fx. file?

3 posts in this topic

Book: "Introduction to 3d game programming with DirectX 10" by Frank D. Luna.
In the end of the chapter 5 there are some exercises. In #5 we should modify vertex shader adding a GameTimer::getGameTime() function. But this function belongs to GameTimer class. And every time I try to include "GameTimer.h" in .fx file I get an error(cannot find such file), but all files are in the same folder.

How should I include correctly this class in *.fx file?
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I don't know the source, but maybe you can rewrite the code as a function inside the fx file?
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I've not read the book so can't be sure but my guess is that he wants you to pass the value returned from the GameTimer::GetTime() function into the .fx file as a variable.
So something like this,

.fx file
[code]
float gTime;

// vertex shader stuff.
Output VertexShader(Input in)
{
Output out;

out = in.Position*gTime;

return out;
}
[/code]

So basically in the .fx file I've created a variable at the top called gTime. This value is then accessed somewhere inside the vertex shader ( in my basic example it is multiplied with the given position values).
You would need to set this new variable in your C++ code before drawing anything with the effect applied, something like this,

.cpp file
[code]
// Heres the important line!!!
Effect.SetBool("gTime", GameTimer.GetTime());

Effect.Begin()
// Draw something awesome. Like a duck!
Effect.End()
[/code]

Unfortunatly I have no idea of the exact code to set variables in your example but your current code should be setting some variables for the effect file already. So if you can find that code and copy it for your new variable that should work out.
Look in your draw code within your .cpp file and it should be setting a View or ViewProjection for the effect somewhere before drawing it.

hope that all makes sense and that its what your actually looking for.
Liam
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