查看“Vivante GCNANO GPU overview”的源代码








==Introduction==

STMicroelectronics STM32MP1平台具有基于'''Vivante Gcnano GPU'''的'''OpenGLES'''硬件IP。.<br>
您可以在'''Vivante GCNANO网页'''上找到更多信息。<ref> http://www.vivantecorp.com/index.php/en/media-article/news/281-20140602-vivante-intros-worlds-first-complete-line-of-gpus-for-wearables-and-iot.html </ref> <ref> http://www.vivantecorp.com/index.php/en/technology/3d.html </ref>

==Features==
===Supported open standards===
 '''Vivante Gcnano GPU''' 与以下'''Khronos的开放标准3D图形'''<ref> http://www.khronos.org/ </ref>:
* OpenGLES 2.0
* OpenGLES 1.1
* OpenVG 1.1
* EGL 1.4

===Vivante Gcnano GPU configuration===

* '''Core Clock''' 264MHz
* '''Shader Clock''' 264MHz
* '''Pixel Rate''' 264 MPixel/sec
* '''Triangle Rate''' 26.4 M tri/sec
* '''Vertex rate''' 66 M vtx/sec
* '''1 shader core (Vec 4)'''
* '''2.112 GFLOPS shader'''

==GPU softwares==

[[File:GPU_software_structure.png|center|800px|link=]]

===Vivante Gcnano GPU userland libraries===
除非客户与Vivante签署了保密协议（如果需要这些库源代码，请联系Vivante）。 Gcnano库（用户）是：

* OpenGLES 1.1 library
* OpenGLES 2.0 library
* EGL 1.4 library
* gbm library
* GAL library
* GLSLC and VSC libraries
* VDK library

===Vivante Gcnano kernel driver===
'''{{Green|Source code is available for all customers}}''' 在所有OpenSTLinux基准中。 <br>
<br>
要访问源代码，请执行以下操作：
 devtool修改gcnano-driver-stm32mp

然后在此处下载源代码：
*'''<your_view>/build*/workspace/sources/gcnano-driver-stm32mp'''
<br>
请参阅 [[OpenEmbedded - devtool]] 以了解有关devtool的更多信息。

===Additional information===
* 意法半导体（ST）根据任何基准版本提供'''调试Vivante Gcnano库'''，'''允许客户使用Vivante工具套件（VTK）'''对应用进行调试/分析。 请查看文章 [[How to debug the Gcnano GPU with VTK]]了解更多详细信息。

==Useful links==

* Vivante网站： http://www.vivantecorp.com/

==EGL==
===Supported EGL backend===
From VIVANTE_GAL3D_Unified_Src_drv_6.1.x, Vivante delivery, Vivante Gcnano libraries support both '''DRM/GBM''' and '''Wayland''' backends.<br>
Refer to [[EGL backends]] article for details.

===EGL texture 0-copy===
Gcnano supports the EGL texture 0-copy extension.

EGL texture 0-copy extension allows an EGL application to share a texture buffer with the GPU by avoiding to copy the texture from application to the GPU.

Refer to [[EGL texture 0-copy]] article for more details.

==Graphic Benchmarks==
Please refer to the [[How to test and benchmark OpenGLES]] article.

==Debugging==
Please have a look to following articles:
* [[How to activate the Gcnano GPU debug mode]]
* [[How to debug the Gcnano GPU with VTK]]

==References==
<references />

<noinclude>
[[Category:GPU]]
</noinclude>