textures - OpenGL Terrain Texture3D Map -

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in opengl trying map terrain 8 512x512 images using texture3d blended texture change. opengl forces me allocate 512x512x512 array instead of 512x512x8 can solution

but opengl forces me allocate 512x512x512

what gave idea? 512×512×8 valid 3d texture size. terrains might @ gl_texture_2d_array, initialized glteximage3d well, doesn't interpolate between layers, usefull in situations.


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