Global Shaders and "Array of Textures"

Development Asset Creation
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1

Hi there people, this has to do with global shaders and hlsl code.

I declare in the global shader file a parameter struct like this:
BEGIN_SHADER_PARAMETER_STRUCT(FParameters, )
SHADER_PARAMETER_TEXTURE_ARRAY(Texture2D, Textures, [4])
END_SHADER_PARAMETER_STRUCT()

And then I am passing it though the pixel shader to sample the textures. In the shader.usf file I must to declare each one of the textures separately as one texture to sample them.
For example:
Texture 2D Texture_1;
Texture 2D Texture_2;
…

This way is not practical and convenient. If I define a Textures array like “Textures[4]”, the shader throws an error and it says that the Textures array is not bound.

Can you recommend me a way where I can use in the shader.usf file an array of Textures?
Is there any solution to my problem?

2 Likes
2

Me too, Have you solved this problem?

3

I had to implement the shader to take only 1 texture, and in the rendering thread call drawPrimitive for each one texture… shaders are not designed to take an array of elements to be honest to you.

4

Hi! Does your textures from external such as a png picture load in game thread to UTexture2D and the pass it to render thread to FRDGTexture? And how did you get it in your shader?