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Apart from allowing non-GL X clients to synchronize with VBLANK, Present brings other advantages. DRI3 graphics performance is better because Present is more efficient than DRI2 in swapping buffers. [19] A number of OpenGL extensions that weren't available with DRI2 are now supported based on new features provided by Present. [19]
The Direct Rendering Manager (DRM) is a subsystem of the Linux kernel responsible for interfacing with GPUs of modern video cards.DRM exposes an API that user-space programs can use to send commands and data to the GPU and perform operations such as configuring the mode setting of the display.
This component is hardware-specific; it is executed on the CPU and translates OpenGL commands, for example, into machine code for the GPU. Because the device driver is split, marshalling is possible. Mesa 3D is the only free and open-source implementation of OpenGL, OpenGL ES, OpenVG, GLX, EGL and OpenCL.
Also in the year 2008 the new DRI2 was introduced to replace DRI, and with it a new model based in the Kernel mode-setting. In 2011, the Glamor project started, aiming to add a generic hardware-accelerated 2D X driver based in OpenGL. In 2013 Adam Jackson did a major rewrite of GLX code to consolidate the diverse paths from Glamor, indirect ...
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.
ANGLE, web browsers graphics engine, a cross-platform translator of OpenGL ES calls to DirectX, OpenGL, or Vulkan API calls. Direct3D (a subset of DirectX) Glide a defunct 3D graphics API developed by 3dfx Interactive. Mantle developed by AMD. Metal developed by Apple. OpenGL and the OpenGL Shading Language; OpenGL ES 3D API for embedded devices.
OpenGL 3.3+ is supported for OpenSWR since Mesa 17.1. VirGL is a Rasterizer for Virtual machines implemented in Mesa 11.1 since 2015 with OpenGL 3.3 support and showed in Mesamatrix since Mesa 18. In actual new Mesa 18.2 it supports more than the others with OpenGL 4.3 and OpenGL ES 3.2. About 80% of OpenGL 4.4 and 4.5 features are also now ready.
The Mesa page still talks about "DRI" and "Gallium3D" as alternative driver models. You seem to be saying that "DRI" is the OpenGL api. Are there perhaps 2 things called "DRI"?Spitzak 01:05, 19 May 2016 (UTC) The Mesa page is wrong, it's mixing concepts. See for example this for a better explanation. About DRI: it's the technology that binds ...