Khronos发布OpenGL 4.2标准

[levee]

距离上次OpenGL 4.1的发布已经过去一年时间，今日在温哥华举行的SIGGRAPH 2011大会上Khronos发布了新的OpenGL 4.2标准细节，对于支持现有硬件的API加入了部分新的支持特性。和OpenGL 4.1一样，OpenGL 4.2主要应用于DX11级别硬件如NVIDIA GeForce 400/500，Radeon HD 5000/6000系列显卡，不过NVIDIA的开发者社区之前曾经表示部分特性可通过扩展功能在最老支持OpenGL2/DX9级别的硬件上实现。


OpenGL 4.2新加入的特性支持如下，也可以参考官方新闻稿：

-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.

同时NVIDIA也随之放出了首款面向开发者的OpenGL 4.2 Windows/Linux驱动，支持Quadro Plex 700/7000/6000/5000/4000/2000/600以及GeForce 500/400全系列显卡。AMD的Beta版驱动预计也将在稍后发布。





来源：cnBeta

[月下叹逍遥]

[leeaman]

还是要支持呀

[phoenixlzx]

啥时候能在Linux上完美支持双显卡无缝切换....

[leeaman]

ls,这个双显卡切换和opengl没有关系的,好吧

[jtshs256]

[qy117121]

南瓜和256 去shi

[SmallV]

啥时候能在Linux上完美支持双显卡无缝切换....

[超级菜鸟]

南瓜和256 去shi

要shi得很shi！！！！