Sample Texture 2D LOD Node
Description
Samples a Texture 2D and returns a Vector 4 color value for use in the shader. You can override the UV coordinates using the UV input and define a custom Sampler State using the Sampler input. Use the LOD input to adjust the level of detail of the sample.
To use the Sample Texture 2D LOD Node to sample a normal map, set the Type dropdown parameter to Normal.
This Node is useful for sampling a Texture in the vertex Shader Stage as the Sample Texture 2D Node is unavailable in this Shader Stage.
Ports
Name | Direction | Type | Binding | Description |
---|---|---|---|---|
Texture | Input | Texture 2D | None | Texture 2D to sample |
UV | Input | Vector 2 | UV | Mesh's normal vector |
Sampler | Input | Sampler State | Default sampler state | Sampler for the texture |
LOD | Input | Vector 1 | None | Level of detail to sample |
RGBA | Output | Vector 4 | None | Output value as RGBA |
R | Output | Vector 1 | None | red (x) component of RGBA output |
G | Output | Vector 1 | None | green (y) component of RGBA output |
B | Output | Vector 1 | None | blue (z) component of RGBA output |
A | Output | Vector 1 | None | alpha (w) component of RGBA output |
Controls
Name | Type | Options | Description |
---|---|---|---|
Type | Dropdown | Default, Normal | Selects the texture type |
Generated Code Example
The following example code represents one possible outcome of this node per Type mode.
Default
float4 _SampleTexture2DLOD_RGBA = SAMPLE_TEXTURE2D_LOD(Texture, Sampler, UV, LOD);
float _SampleTexture2DLOD_R = _SampleTexture2DLOD_RGBA.r;
float _SampleTexture2DLOD_G = _SampleTexture2DLOD_RGBA.g;
float _SampleTexture2DLOD_B = _SampleTexture2DLOD_RGBA.b;
float _SampleTexture2DLOD_A = _SampleTexture2DLOD_RGBA.a;
Normal
float4 _SampleTexture2DLOD_RGBA = SAMPLE_TEXTURE2D_LOD(Texture, Sampler, UV, LOD);
_SampleTexture2DLOD_RGBA.rgb = UnpackNormalRGorAG(_SampleTexture2DLOD_RGBA);
float _SampleTexture2DLOD_R = _SampleTexture2DLOD_RGBA.r;
float _SampleTexture2DLOD_G = _SampleTexture2DLOD_RGBA.g;
float _SampleTexture2DLOD_B = _SampleTexture2DLOD_RGBA.b;
float _SampleTexture2DLOD_A = _SampleTexture2DLOD_RGBA.a;