[GL3+] Fix Terrain shader compiler error

Even though Terrain doesn't (yet?) use alpha hashing nor the blue noise texture, OpenGL backend wants to set the blueNoiseTex variable (because we derive from HlmsPbs) Thanks user segfaulting for spotting this bug https://forums.ogre3d.org/viewtopic.php?t=97329
OGRECave · Aug 30, 2024 · 396f229 · 396f229
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commit 396f229
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diff --git a/Samples/Media/Hlms/Terra/GLSL/PixelShader_ps.glsl b/Samples/Media/Hlms/Terra/GLSL/PixelShader_ps.glsl
@@ -62,6 +62,7 @@ in block
 
 @insertpiece( DeclPlanarReflTextures )
 @insertpiece( DeclAreaApproxTextures )
+@insertpiece( DeclBlueNoiseTexture )
 
 @property( hlms_vpos )
 in vec4 gl_FragCoord;

diff --git a/Samples/Media/Hlms/Terra/HLSL/PixelShader_ps.hlsl b/Samples/Media/Hlms/Terra/HLSL/PixelShader_ps.hlsl
@@ -45,6 +45,7 @@ struct PS_INPUT
 
 @insertpiece( DeclPlanarReflTextures )
 @insertpiece( DeclAreaApproxTextures )
+@insertpiece( DeclBlueNoiseTexture )
 
 Texture2D<float3> terrainNormals	: register(t@value(terrainNormals));
 Texture2D<float4> terrainShadows	: register(t@value(terrainShadows));

diff --git a/Samples/Media/Hlms/Terra/Metal/PixelShader_ps.metal b/Samples/Media/Hlms/Terra/Metal/PixelShader_ps.metal
@@ -101,6 +101,7 @@ fragment @insertpiece( output_type ) main_metal
 
 	@insertpiece( DeclPlanarReflTextures )
 	@insertpiece( DeclAreaApproxTextures )
+	@insertpiece( DeclBlueNoiseTexture )
 
 
 	@property( irradiance_volumes )