Shader learning Experience (2): The function of FX insert Snippets, and the shader implementation of the map

2.1 Add maps for our shader

Step 1: In our empty effect:

float4x4 worldviewproj:worldviewprojection;

Right-click the following line and select Insert Snippets

Select "Texture and Sampler" in the box to the right

Double-click on the name of a box and modify it to diffuse so that all "Name" becomes "diffuse" automatically.

Step 2: Add the program segment so that the code becomes

float4x4 worldviewproj:worldviewprojection;

Texture Diffuse <

String resourcename = "";//optional default file name

String uiname = "diffuse texture";

String resourcetype = "2D";

>;

Sampler2d Diffusesampler = sampler_state {

Texture = <diffuse>;

Minfilter = Linear;

Magfilter = Linear;

Mipfilter = Linear;

Addressu = Wrap;

ADDRESSV = Wrap;

};

struct Vs_output

{

FLOAT4 pos:position;

FLOAT2 tex:texcoord0;

};

Vs_output Mainvs (float4 pos:position,float2 tex:texcoord0) {

Vs_output vsout;

Vsout.pos = Mul (pos,worldviewproj);

Vsout.tex = Tex;

return vsout;

}

Float4 Mainps (float2 tex:texcoord0): COLOR {

Return tex2d (Diffusesampler, Tex);

}

Technique TECHNIQUE0 {

Pass P0 {

VertexShader = Compile vs_3_0 Mainvs ();

PixelShader = Compile ps_3_0 Mainps ();

}

}