๐Ÿงƒ Rendering Pipeline in Unreal Engine

    ๐Ÿ™ƒ  { explain about rendering pipeline in unreal engine with 200 words. )


    The rendering pipeline in Unreal Engine is a complex and crucial process that transform 3D scene data into 2D images that are displayed on the screen. It involves a series of stages and computations to create visually stunning and immersive graphics in real-time.

    ์–ธ๋ฆฌ์–ผ ์—”์ง„์˜ ๋ Œ๋”๋ง ํŒŒ์ดํ”„๋ผ์ธ์€ 3D ์žฅ๋ฉด ๋ฐ์ดํ„ฐ๋ฅผ ํ™”๋ฉด์— ํ‘œ์‹œ๋˜๋Š” 2D ์ด๋ฏธ์ง€๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ณต์žกํ•˜๊ณ  ์ค‘์š”ํ•œ ๊ณผ์ •์œผ๋กœ, ์‹œ๊ฐ์ ์œผ๋กœ ๋†€๋ž๊ณ  ๋ชฐ์ž…๊ฐ ์žˆ๋Š” ๊ทธ๋ž˜ํ”ฝ์„ ์‹ค์‹œ๊ฐ„์œผ๋กœ ์ƒ์„ฑํ•˜๊ธฐ ์œ„ํ•œ ์ผ๋ จ์˜ ๋‹จ๊ณ„์™€ ๊ณ„์‚ฐ์ด ํ•„์š”ํ•˜๋‹ค.

     

    crucial: ์ค‘๋Œ€ํ•œ, ๊ฒฐ์ •์ ์ธ

    involve: ํ•„์—ฐ์ ์œผ๋กœ ํฌํ•จํ•˜๋‹ค, ์ฐธ์—ฌ์‹œํ‚ค๋‹ค

    computation: ๊ณ„์‚ฐ


    The rendering pipeline begins with the preparation of the scene, where the 3D models, textures, materials, and lighting information are loaded into the engine's memory. Next, the engine performs a process called culling, where it determines which objects and surfaces are visible from the camera's perspective, optimizing performance by excluding non-visible elements.

    ๋ Œ๋”๋ง ํŒŒ์ดํ”„๋ผ์ธ์€ 3D ๋ชจ๋ธ, ํ…์Šค์ฒ˜, ์žฌ๋ฃŒ ๋ฐ ์กฐ๋ช… ์ •๋ณด๊ฐ€ ์—”์ง„์˜ ๋ฉ”๋ชจ๋ฆฌ์— ๋กœ๋“œ๋˜๋Š” ์žฅ๋ฉด์„ ์ค€๋น„ํ•˜๋Š” ๊ฒƒ์œผ๋กœ ์‹œ์ž‘๋œ๋‹ค. ๋‹ค์Œ์œผ๋กœ ์—”์ง„์€ ์ปฌ๋ง์ด๋ผ๋Š” ํ”„๋กœ์„ธ์Šค๋ฅผ ์ˆ˜ํ–‰ํ•˜์—ฌ ์นด๋ฉ”๋ผ์˜ ๊ด€์ ์—์„œ ๋ณผ ์ˆ˜ ์žˆ๋Š” ์˜ค๋ธŒ์ ํŠธ์™€ ํ‘œ๋ฉด์„ ๊ฒฐ์ •ํ•˜๊ณ  ๋ณด์ด์ง€ ์•Š๋Š” ์š”์†Œ๋ฅผ ์ œ์™ธํ•˜์—ฌ ์„ฑ๋Šฅ์„ ์ตœ์ ํ™”ํ•œ๋‹ค.

     

    preparation: ์ค€๋น„, ๋Œ€๋น„

    determine: ๋ฐฉ์‹์„ ๊ฒฐ์ •ํ•˜๋‹ค, ์•Œ์•„๋‚ด๋‹ค, ๋ฐํžˆ๋‹ค

    perspective: ๊ด€์ , ์‹œ๊ฐ, ์›๊ทผ๋ฒ•


    After culling, the engine proceeds with the geometry processing stage, where it applies transformations, such as scaling, rotation, and translation, to the 3D models based on their positions in the scene. This step also includes generating meshes, calculating normals, and applying other geometric operations.

    ์ปฌ๋ง ํ›„ ์—”์ง„์€ ์ง€์˜ค๋ฉ”ํŠธ๋ฆฌ ์ฒ˜๋ฆฌ ๋‹จ๊ณ„๋ฅผ ์ง„ํ–‰ํ•˜์—ฌ ์”ฌ์—์„œ์˜ ์œ„์น˜์— ๋”ฐ๋ผ ์Šค์ผ€์ผ๋ง, ํšŒ์ „ ๋ฐ ๋ณ€ํ™˜๊ณผ ๊ฐ™์€ ๋ณ€ํ˜•์„ 3D ๋ชจ๋ธ์— ์ ์šฉํ•œ๋‹ค. ์ด ๋‹จ๊ณ„์—๋Š” ๋ฉ”์‰ฌ ์ƒ์„ฑ, ๋ฒ•์„  ๊ณ„์‚ฐ ๋ฐ ๊ธฐํƒ€ ๊ธฐํ•˜ํ•™์  ์—ฐ์‚ฐ ์ ์šฉ๋„ ํฌํ•จ๋œ๋‹ค.

     

    proceed: ์ง„ํ–‰ํ•˜๋‹ค, ๊ณ„์†ํ•ด์„œ ...์„ ํ•˜๋‹ค

    operation: ์ž‘์—…


    The next significant phase is the rasterization stage, where the 3D objects are projected onto the 2D screen space. This process involves converting the geometric data into pixels, which are then assigned color based on lighting calculations, textures, and materials.

    ๋‹ค์Œ์œผ๋กœ ์ค‘์š”ํ•œ ๋‹จ๊ณ„๋Š” 3D ๊ฐœ์ฒด๊ฐ€ 2D ํ™”๋ฉด ๊ณต๊ฐ„์— ํˆฌ์˜๋˜๋Š” ๋ž˜์Šคํ„ฐํ™” ๋‹จ๊ณ„๋‹ค. ์ด ํ”„๋กœ์„ธ์Šค์—๋Š” ๊ธฐํ•˜ํ•™์  ๋ฐ์ดํ„ฐ๋ฅผ ํ”ฝ์…€๋กœ ๋ณ€ํ™˜ํ•œ ๋‹ค์Œ ์กฐ๋ช… ๊ณ„์‚ฐ, ํ…์Šค์ฒ˜ ๋ฐ ๋จธํ‹ฐ๋ฆฌ์–ผ์„ ๊ธฐ๋ฐ˜์œผ๋กœ ์ƒ‰์ƒ์„ ์ง€์ •ํ•˜๋Š” ์ž‘์—…์ด ํฌํ•จ๋œ๋‹ค.

     

    rasterization: ๋ž˜์Šคํ„ฐํ™” (์ปดํ“จํ„ฐ ๊ทธ๋ž˜ํ”ฝ์Šค์—์„œ ๋„ํ˜•์„ ์ƒ์„ฑํ•˜๋Š” ๋ฒกํ„ฐ ๊ทธ๋ž˜ํ”ฝ์Šค๋ฅผ ํ”ฝ์…€ ํŒจํ„ด ์ด๋ฏธ์ง€๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๊ฒƒ)

    be project onto: ๋น„์ถ”๋‹ค, ํˆฌ์˜ํ•˜๋‹ค


    Following rasterizations, the engine performs pixel shading, which calculates the final colors of each pixel based on lighting models, shadowing, and material propeties. Advanced effects such as global illumination, reflections, and post-processing effects are applied at this stage to enhance visual fidelity.

    ๋ž˜์Šคํ„ฐํ™” ํ›„ ์—”์ง„์€ ์กฐ๋ช… ๋ชจ๋ธ, ๊ทธ๋ฆผ์ž ๋ฐ ๋จธํ‹ฐ๋ฆฌ์–ผ ์†์„ฑ์„ ๊ธฐ๋ฐ˜์œผ๋กœ ๊ฐ ํ”ฝ์…€์˜ ์ตœ์ข… ์ƒ‰์ƒ์„ ๊ณ„์‚ฐํ•˜๋Š” ํ”ฝ์…€ ์Œ์˜ ์ฒ˜๋ฆฌ๋ฅผ ์ˆ˜ํ–‰ํ•œ๋‹ค. ์ „์—ญ ์กฐ๋ช…, ๋ฐ˜์‚ฌ ๋ฐ ํ›„์ฒ˜๋ฆฌ ํšจ๊ณผ์™€ ๊ฐ™์€ ๊ณ ๊ธ‰ ํšจ๊ณผ๊ฐ€ ์ด ๋‹จ๊ณ„์—์„œ ์ ์šฉ๋˜์–ด ์‹œ๊ฐ์  ์ถฉ์‹ค๋„๋ฅผ ํ–ฅ์ƒ์‹œํ‚จ๋‹ค.

     

    enhance: ํ–ฅ์ƒ์‹œํ‚ค๋‹ค, ๋†’์ด๋‹ค

    fidelity: ์ •ํ™•๋„, ์ถฉ์‹ค๋„


    Finally, the rendered image is displayed on the screen, and the entire process repeats for each frame to achieve real-time rendering. Unreal Engine employs various optimization techniques, such as level-of-detail management and occlusion culling, to ensure smooth and efficant rendering performance.

    ๋งˆ์ง€๋ง‰์œผ๋กœ ๋ Œ๋”๋ง๋œ ์ด๋ฏธ์ง€๊ฐ€ ํ™”๋ฉด์— ํ‘œ์‹œ๋˜๊ณ  ์‹ค์‹œ๊ฐ„ ๋ Œ๋”๋ง์„ ๋‹ฌ์„ฑํ•˜๊ธฐ ์œ„ํ•ด ๊ฐ ํ”„๋ ˆ์ž„์— ๋Œ€ํ•ด ์ „์ฒด ํ”„๋กœ์„ธ์Šค๊ฐ€ ๋ฐ˜๋ณต๋œ๋‹ค. ์–ธ๋ฆฌ์–ผ ์—”์ง„์€ ๋ถ€๋“œ๋Ÿฝ๊ณ  ํšจ์œจ์ ์ธ ๋ Œ๋”๋ง ์„ฑ๋Šฅ์„ ๋ณด์žฅํ•˜๊ธฐ ์œ„ํ•ด ๋””ํ…Œ์ผ ์ˆ˜์ค€ ๊ด€๋ฆฌ ๋ฐ ์˜คํด๋ฃจ์ „ ์ปฌ๋ง๊ณผ ๊ฐ™์€ ๋‹ค์–‘ํ•œ ์ตœ์ ํ™” ๊ธฐ์ˆ ์„ ์‚ฌ์šฉํ•œ๋‹ค.

     

    entire: ์ „์ฒด์˜

    achieve: ๋‹ฌ์„ฑํ•˜๋‹ค, ํ•ด๋‚ด๋‹ค

    employ: ๊ธฐ์ˆ ์„ ์“ฐ๋‹ค[์ด์šฉํ•˜๋‹ค]

    level-of-detail: ์ •๋ฐ€๋„ (LOD)


    The rendering pipeline in Unreal Engine is a sophisticated and dynamic system that enables developers to create visually captivating and realistic graphics, making it a crucial component in delivering high-quality gaming expriences.

    ์–ธ๋ฆฌ์–ผ ์—”์ง„์˜ ๋ Œ๋”๋ง ํŒŒ์ดํ”„๋ผ์ธ์€ ๊ฐœ๋ฐœ์ž๊ฐ€ ์‹œ๊ฐ์ ์œผ๋กœ ๋งค๋ ฅ์ ์ด๊ณ  ์‚ฌ์‹ค์ ์ธ ๊ทธ๋ž˜ํ”ฝ์„ ๋งŒ๋“ค ์ˆ˜ ์žˆ๊ฒŒ ํ•ด์ฃผ๋Š” ์ •๊ตํ•˜๊ณ  ์—ญ๋™์ ์ธ ์‹œ์Šคํ…œ์œผ๋กœ, ๊ณ ํ’ˆ์งˆ ๊ฒŒ์ž„ ๊ฒฝํ—˜์„ ์ œ๊ณตํ•˜๋Š” ๋ฐ ์ค‘์š”ํ•œ ๊ตฌ์„ฑ ์š”์†Œ๋‹ค.

     

    sophisticated: ์„ธ๋ จ๋œ, ์ •๊ตํ•œ, ์ˆ˜์ค€ ๋†’์€

    '๊ณต๋ถ€' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

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