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tcige

Member Since 10 Apr 2013
Offline Last Active Jun 27 2013 08:38 PM
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#5070216 can 'SetTextureStageState' be used with pixel shader

Posted by tcige on 16 June 2013 - 12:45 PM

 

In pixel shader:

float4 textureColor = tex2D( samp, texCoord );
float alpha = textureColor.a; 


 

yeah, pixel shader is so convenient




#5069425 how do i know the vertex coordinate of the mesh

Posted by tcige on 13 June 2013 - 08:25 AM

i test using D3DXCreateTeapot, but can not find any info about its vertex coordinate




#5067036 usage of hlsl function

Posted by tcige on 03 June 2013 - 02:38 AM

Earlier versions can't use it, because it wasn't added to the spec until SM5.
You have to just use "1/x" for earlier versions.

 

i test it works for 'vs_1_1', and D3DXCompileShaderFromFile returns no error




#5066101 what does 'w' mean in shader assembler

Posted by tcige on 30 May 2013 - 05:07 AM

It's the homogeneous coordinate. I would strongly suggest reading more graphics theory before proceeding.

 

thanks a lot

 

but i do not agree with your opinion, i am using api, not designing api




#5066084 what does 'w' mean in shader assembler

Posted by tcige on 30 May 2013 - 03:35 AM

it seems to be the fourth component of input register, and D3DDECLTYPE_FLOAT3 sets it to 1




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