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Guru3D.com » News » OpenGL 4.2 standard released

OpenGL 4.2 standard released

by Hilbert Hagedoorn on: 08/09/2011 09:12 AM | source: | 0 comment(s)

The Khronos Group today announced the immediate release of the OpenGL 4.2 specification, bringing the very latest graphics functionality to the most advanced and widely adopted cross-platform 2D and 3D graphics API (application programming interface). OpenGL 4.2 integrates developer feedback and continues the rapid evolution of this royalty-free specification while maintaining full backwards compatibility - enabling applications to incrementally use new features, while portably accessing state-of-the-art graphics processing unit (GPU) functionality across diverse operating systems and platforms.

The OpenGL 4.2 specification has been defined by the OpenGL ARB (Architecture Review Board) working group at Khronos, and includes the GLSL 4.20 update to the OpenGL Shading Language. The OpenGL 4.2 specification contains new features that extend functionality available to developers and enables increased application performance. The full specification is available for immediate download at http://www.opengl.org/registry.

New functionality in the OpenGL 4.2 specification includes:

  • enabling shaders with atomic counters and load/store/atomic read-modify-write operations to a single level of a texture. These capabilities can be combined, for example, to maintain a counter at each pixel in a buffer object for single-rendering-pass order-independent transparency;
  • capturing GPU-tessellated geometry and drawing multiple instances of the result of a transform feedback to enable complex objects to be efficiently repositioned and replicated;
  • modifying an arbitrary subset of a compressed texture, without having to re-download the whole texture to the GPU for significant performance improvements;
  • packing multiple 8 and 16 bit values into a single 32-bit value for efficient shader processing with significantly reduced memory storage and bandwidth, especially useful when transferring data between shader stages.







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