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Simple ole Texture Ops

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I give up guys,


I''m trying to figure out just plain ole pre-Vertex Shaders texture operations in DirectX.

Specifically, I can''t really seem to get a grip on the overall concept of SetTextureStageStage().

I looked at a tutorial from Drunken Hyena, but I just need a

"Okay, there are 3 steps you need to look at.

    1. Choose an operation, e.g. D3DTSS_COLOROP

    2. Choose your first argument, e.g. D3DTA_TEXTURE

 etc etc.


I see in the tutorial:

<table border="1" width="77%"> <tr> <td width="100%">g_d3d_device->SetTextureStageState(0,D3DTSS_COLOROP,D3DTOP_SELECTARG1);  g_d3d_device->SetTextureStageState(0,D3DTSS_COLORARG1,D3DTA_TEXTURE);

g_d3d_device->SetTextureStageState(0,D3DTSS_ALPHAOP,D3DTOP_SELECTARG1); g_d3d_device->SetTextureStageState(0,D3DTSS_ALPHAARG1,D3DTA_TEXTURE);</td> </tr> </table>


Specifically, I don''t understand D3DTOP_SELECTARG1.  Generally, I don''t get the concept.

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