SV_Target1, SV_Target2, etc.: These are additional colors written by the shader. Semantics supported by the fragment shader outputs are as follows. Returning structures from the fragment shader is mostly usefulįor shaders that don’t just return a single color. The fragment shader above could be rewritten this way too, and it would

It is also possible to return a structure with the outputs. Is indicated on the function itself, : SV_Target. As it only returns a single value, the semantic The function frag has a return type of fixed4 (low precision The fragment shader in the example above doesĮxactly that: fixed4 frag (v2f i) : SV_Target Most often a fragment (pixel) shader outputs a color, and has an Semantics on each individual member variable of the struct. It is also possible to declare a structure of them, and indicate Instead of spelling out all individual inputs one by one, Shader 'Unlit/Show UVs'įloat4 vertex : POSITION, // vertex position inputįloat2 uv : TEXCOORD0 // first texture coordinate input Visualizes the texture coordinate as a color. Pixel lighting is calculated at every screen pixel. Pixel size depends on your screen resolution. The pixel The smallest unit in a computer image. More info See in Glossary that takes vertex positionĪnd a texture coordinate as an input. Here’s an example of a simple vertex shader A program that runs on each vertex of a 3D model when the model is being rendered. See vertex program inputs for more details. More info See in Glossary data elements, like vertex position, normal mesh, and texture coordinates. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. Unity supports triangulated or Quadrangulated polygon meshes. Meshes make up a large part of your 3D worlds. These correspond to individual Mesh The main graphics primitive of Unity. More info See in Glossary function (indicated by the #pragma vertexĭirective) needs to have semantics on all of the input parameters. The main vertex shader A program that runs on the GPU.

Shader language see the Semantics documentation on MSDN for more details. Input and output variables need to have their “intent” indicated

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