Search results
Results From The WOW.Com Content Network
The Blinn–Phong reflection model, also called the modified Phong reflection model, is a modification developed by Jim Blinn to the Phong reflection model. [1]Blinn–Phong is a shading model used in OpenGL and Direct3D's fixed-function pipeline (before Direct3D 10 and OpenGL 3.1), and is carried out on each vertex as it passes down the graphics pipeline; pixel values between vertices are ...
The scene graph would have a 'horse' node with a 'knight' node attached to it. The scene graph may also describe the spatial, as well as the logical, relationship of the various entities: the knight moves through 3D space as the horse moves. In these large applications, memory requirements are major considerations when designing a scene graph.
Modern graphics cards use a freely programmable, shader-controlled pipeline, which allows direct access to individual processing steps. To relieve the main processor, additional processing steps have been moved to the pipeline and the GPU. The most important shader units are vertex shaders, geometry shaders, and pixel shaders.
Back-face culling may also be applied to other problems. For example, in wire-frame rendering, back-face culling can be used to partially address the problem of hidden-line removal, but only for closed convex geometry. Back-face culling can also be applied to flat surfaces other than polygons, for example disks, which have a constant normal ...
Back-face culling is inverted and the back-facing triangles are drawn in black. To dilate the silhouette, these back-faces may be drawn in wireframe multiple times with slight changes in translation. Alternatively, back-faces may be rendered solid-filled, with their vertices translated along their vertex normals in a vertex shader. After ...
Sophisticated applications allow savvy users to write custom shaders in a shading language such as HLSL or GLSL, though increasingly node-based material editors that allow a graph-based workflow with native support for important concepts such as light position, levels of reflection and emission and metallicity, and a wide range of other math ...
The Phong reflection model was developed by Bui Tuong Phong at the University of Utah, who published it in his 1975 Ph.D. dissertation. [1] [2] It was published in conjunction with a method for interpolating the calculation for each individual pixel that is rasterized from a polygonal surface model; the interpolation technique is known as Phong shading, even when it is used with a reflection ...
Phong shading and the Phong reflection model were developed at the University of Utah by Bui Tuong Phong, who published them in his 1973 Ph.D. dissertation [3] [4] and a 1975 paper. [5]