Question Can't compile shader because _ShadowMapTexture in cginc

Hey folks,

Here I have a sample from the cginc file. The defining part of _ShadowMapTexture gives me a compiling error. Saying that its undeclared. Any ideas on how to declare it?

Code (CSharp):

1. inline fixed SampleShadow(float4 shadowCoord)
2. {
3.     #if defined(SHADOWS_SCREEN)
4.     fixed shadow = UNITY_SAMPLE_SHADOW(_ShadowMapTexture, shadowCoord.xyz);
5.     return _LightShadowData.r + shadow * (1 - _LightShadowData.r);
6.     #endif
7.     return 1.0;
8. }
9.  
10. inline fixed4 ApplyShadow(fixed4 color, float depth, float4 shadowCoord)
11. {
12.     fixed attenuation = SampleShadow(shadowCoord);
13.     fixed shadow = 1 - attenuation;
14.  
15.     float blend = 1 - (depth - _ShadowMinDistance) / (_ShadowMaxDistance - _ShadowMinDistance);
16.     shadow = shadow * saturate(blend) * _ShadowIntensity;
17.  
18.     return lerp(color, _ShadowColor, shadow);
19. }