About: Geometry pipelines

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Geometric manipulation of modelling primitives, such as that performed by a geometry pipeline, is the first stage in computer graphics systems which perform image generation based on geometric models. While geometry pipelines were originally implemented in software, they have become highly amenable to hardware implementation, particularly since the advent of very-large-scale integration (VLSI) in the early 1980s. A device called the Geometry Engine developed by Jim Clark and Marc Hannah at Stanford University in about 1981 was the watershed for what has since become an increasingly commoditized function in contemporary image-synthetic raster display systems.

Attributes	Values
rdf:type	person
rdfs:label	Geometry pipelines (en) ジオメトリエンジン (ja)
rdfs:comment	ジオメトリエンジン (Geometry engine) とは、3DCG における座標変換を専門的に行うソフトウェアやハードウェアのことである。物体を3DCGで表現する際、頂点座標などのデータを基にコンピュータ内に作られた仮想的な3次元空間へ構築されるが、最終的にはスクリーン（モニター）へ描画する必要があり、そのスクリーンは平面（2次元）であるため、3次元から2次元への座標変換（ジオメトリ処理）を行う必要がある。こういった変換は膨大な浮動小数点の演算が必要なため、CPUにも負荷がかかる。その処理を専用に行うソフトウェアやハードウェアが、ジオメトリエンジンである。ソフトウェアの場合は、プログラマが変換処理を行いやすいようにまとめられた命令群（ライブラリ）である。 (ja) Geometric manipulation of modelling primitives, such as that performed by a geometry pipeline, is the first stage in computer graphics systems which perform image generation based on geometric models. While geometry pipelines were originally implemented in software, they have become highly amenable to hardware implementation, particularly since the advent of very-large-scale integration (VLSI) in the early 1980s. A device called the Geometry Engine developed by Jim Clark and Marc Hannah at Stanford University in about 1981 was the watershed for what has since become an increasingly commoditized function in contemporary image-synthetic raster display systems. (en)
dct:subject	3D computer graphics
Wikipage page ID	1090006 (xsd:integer)
Wikipage revision ID	1103989554 (xsd:integer)
Link from a Wikipage to another Wikipage	Matrox Geometric primitive Geometric transformation GeForce Graphics card Graphics pipeline Vertex pipeline Very-large-scale integration Artistic rendering Silicon Graphics Stanford University Computer graphics Computer graphics lighting Computer science Polygon RealityEngine 3Dfx ATI Technologies 3D computer graphics Evans & Sutherland Central processing unit Raster graphics Rasterisation AMD Graphics James H. Clark Direct3D Viewing transformation Nvidia OpenGL Open Graphics Project Shading Pixel pipeline Screen space Surface normal dbr:Model_space dbr:Picture_System
sameAs	Geometry pipelines Geometry pipelines Geometry pipelines Geometry pipelines
dbp:wikiPageUsesTemplate	dbt:Refimprove dbt:Reflist dbt:Graphics_Processing_Unit
has abstract	Geometric manipulation of modelling primitives, such as that performed by a geometry pipeline, is the first stage in computer graphics systems which perform image generation based on geometric models. While geometry pipelines were originally implemented in software, they have become highly amenable to hardware implementation, particularly since the advent of very-large-scale integration (VLSI) in the early 1980s. A device called the Geometry Engine developed by Jim Clark and Marc Hannah at Stanford University in about 1981 was the watershed for what has since become an increasingly commoditized function in contemporary image-synthetic raster display systems. Geometric transformations are applied to the vertices of polygons, or other geometric objects used as modelling primitives, as part of the first stage in a classical geometry-based graphic image rendering pipeline. Geometric computations may also be applied to transform polygon or repair surface normals, and then to perform the lighting and shading computations used in their subsequent rendering. (en) ジオメトリエンジン (Geometry engine) とは、3DCG における座標変換を専門的に行うソフトウェアやハードウェアのことである。物体を3DCGで表現する際、頂点座標などのデータを基にコンピュータ内に作られた仮想的な3次元空間へ構築されるが、最終的にはスクリーン（モニター）へ描画する必要があり、そのスクリーンは平面（2次元）であるため、3次元から2次元への座標変換（ジオメトリ処理）を行う必要がある。こういった変換は膨大な浮動小数点の演算が必要なため、CPUにも負荷がかかる。その処理を専用に行うソフトウェアやハードウェアが、ジオメトリエンジンである。ソフトウェアの場合は、プログラマが変換処理を行いやすいようにまとめられた命令群（ライブラリ）である。 (ja)
gold:hypernym	Stage
prov:wasDerivedFrom	wikipedia-en:Geometry_pipelines?oldid=1103989554&ns=0
page length (characters) of wiki page	3832 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Geometry_pipelines
is Link from a Wikipage to another Wikipage of	Development of No Man's Sky Pipeline (computing) VLSI Project 3D computer graphics History of computer animation James H. Clark IMPACT (computer graphics) Geometry Engine Geometry pipeline
is Wikipage redirect of	Geometry Engine Geometry pipeline
is foaf:primaryTopic of	wikipedia-en:Geometry_pipelines

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