In 3D design, the core difference between procedural and bitmap textures is their creation method: procedural textures are algorithm-generated, while bitmap textures are pre-made 2D images.
Procedural textures use mathematical formulas to generate dynamic, resolution-independent patterns (e.g., noise, gradients, marble). They avoid pixelation when scaled, offering flexibility for adjustments. Bitmap textures (raster textures) are static pixel-based images (e.g., JPEG, PNG), relying on pre-rendered details but blurring or distorting when stretched beyond original resolution.
For infinite, adjustable patterns (seamless tiling, organic textures), choose procedural textures; for specific photo-realistic details (logos, surface photos), bitmap textures are more suitable.