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The set of APIs used to compile, link, and pass parameters to GLSL programs are specified in three OpenGL extensions, and became part of core OpenGL as of OpenGL Version 2.0. The API was expanded with geometry shaders in OpenGL 3.2, tessellation shaders in OpenGL 4.0 and compute shaders in OpenGL 4.3. These OpenGL APIs are found in the extensions:
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 ...
Pyglet is a library for the Python programming language that provides an object-oriented application programming interface for the creation of games and other multimedia applications. [ 1 ] [ 2 ] pyglet runs on Microsoft Windows , macOS , and Linux ; it is released under the BSD Licence . pyglet was first created by Alex Holkner.
OpenGL (Open Graphics Library [4]) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics.The API is typically used to interact with a graphics processing unit (GPU), to achieve hardware-accelerated rendering.
The shader assembly language in Direct3D 8 and 9 is the main programming language for vertex and pixel shaders in Shader Model 1.0/1.1, 2.0, and 3.0. It is a direct representation of the intermediate shader bytecode which is passed to the graphics driver for execution.
The most important shader units are vertex shaders, geometry shaders, and pixel shaders. The Unified Shader has been introduced to take full advantage of all units. This gives a single large pool of shader units. As required, the pool is divided into different groups of shaders. A strict separation between the shader types is therefore no ...
To draw a triangle strip using immediate mode OpenGL, glBegin must be passed the argument GL_TRIANGLE_STRIP, which notifies OpenGL a triangle strip is about to be drawn. The glVertex * family of functions specify the coordinates for each vertex in the triangle strip. For more information, consult The OpenGL Redbook. [3]
For example: Create an FBO and bind it. Attach the color buffer (either as a RenderBuffer or a texture) to the FBO. Attach the depth buffer (either as a RenderBuffer or a texture) to the FBO. Bind the native window FrameBuffer (id=0) Render the texture to screen with a pixel shader, dependent on both the Color information and depth information.