Vertex&frag

The Vertex&frag type of shader uses shader methods for vertex calculations and pixel calculations.

For example: first through the vertex shader, calculate the model's coordinates and textures, and then pass the pixel shader to calculate the color value.

* Note

_maintex_st and Transform_tex are correspondence, calculating the offset and spread of texture coordinates.

The range of clipping space is [ -1,1], that is, after the MVP matrix, the range of O.POS.X/O.POS.W and O.POS.Y/O.POS.W is [ -1,1] so the clipping space coordinates can be converted to relative screen position of the UV coordinates, as follows O.UV = FLOAT2 ((o.pos.x/o.pos.w+1) *0.5, (o.pos.y/o.pos.w+1) *0.5);

Source:

1Shader"Jqm/vertexandfrag"                                            //file name and path2 {3Properties//Properties4     {5_maintex ("Texture", 2D) =" White" {}6     }7 Subshader8     {9 Ten Pass One         { ACgprogram//Vertex&frag type of shader with CG language -             #pragmaVertex vert -             #pragmaFragment Frag the              -#include"Unitycg.cginc" -  -Sampler2d _maintex;//Property Declaration + float4 _maintex_st; -  +             structAppData A             { at float4 vertex:position; - float2 uv:texcoord0; -             }; -  -             structv2f -             { in float4 pos:sv_position; - float2 uv:texcoord0; to             }; +  -              thev2f Vert (AppData v)//Vertex program *             { $ v2f o;Panax NotoginsengO.pos = Mul (UNITY_MATRIX_MVP, V.vertex);//model View projection matrix, which transfers the model coordinates to the camera coordinates, in the projection to the screen coordinates -O.UV = Transform_tex (V.uv, _maintex);//calculate the values between Uvs and maps the                 returno; +             } A              theFixed4 Frag (v2f i): COLOR//fragment program, Force return color value of color type +             { -                 //Sample The texture $Fixed4 col = tex2d (_maintex, I.UV);//Texture Sampling $                 returnCol; -             } - ENDCG the         } -     }Wuyi}

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Vertex&frag