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Technology & Digital Applications Flashcards

7 cards from real 3D Modeling practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which compression method is typically used for textures in real-time 3D applications to reduce VRAM usage?

    Answer: BC7 / DXT block compression

    Block compression formats like BC7 (DXT) allow the GPU to sample compressed textures directly without decompressing them, saving VRAM and bandwidth.

  2. What is Substance Painter primarily used for in a 3D production pipeline?

    Answer: PBR texture painting directly on 3D models

    Substance Painter by Adobe is a texture-authoring tool that lets artists paint PBR maps (albedo, roughness, metallic, normal) directly on 3D surfaces.

  3. Which open standard allows 3D scenes to be embedded and viewed in PDF documents?

    Answer: U3D (Universal 3D)

    The U3D format is supported by Adobe Acrobat/Reader for embedding interactive 3D content directly inside PDF files.

  4. In 3D modeling, what does 'HDRI' stand for and how is it used?

    Answer: High Dynamic Range Image — used as a 360° environment light source

    An HDRI is a 360° panoramic image with a wide luminance range that is used to light 3D scenes with realistic, image-based illumination.

  5. What is 'retopology' and why is it important in a digital production pipeline?

    Answer: Re-creating a clean, low-polygon mesh over a high-poly sculpt for use in animation or games

    Retopology converts dense sculpted meshes into clean, animation-friendly topology with proper edge flow for deformation and real-time use.

  6. Which technology enables 3D artists to use AI to generate textures or enhance renders?

    Answer: Generative AI / Diffusion model tools (e.g., Stable Diffusion, Firefly)

    Generative AI tools based on diffusion models can create textures, upscale renders, and generate reference imagery, increasingly integrated into 3D workflows.

  7. What does 'GPU rendering' offer over 'CPU rendering' in most 3D workflows?

    Answer: Significantly faster render times for many scene types due to massive parallel processing

    GPUs contain thousands of cores capable of parallel computation, making them far faster than CPUs for rendering tasks like path tracing.