AM35x-OMAP35x Graphics SDK Getting Started Guide
From Texas Instruments Wiki
Introduction to the Graphics Engine
TI SOCs like AM335x (Sitara SOCs) are enabled with 3D cores, capable of accelerating 3D operations with dedicated hardware. The dedicated hardware is based on SGX series of devices from Imagination Technologies. The graphics cores only accelerate graphics operations, and do not perform video decode operations. For video acceleration, refer to respective Technical Reference Manuals for the SOCs.
The APIs that are accelerated with this hardware are,
- OpenGL ES1.1
- OpenGL ES2.0
Note that OpenVG 1.1 is deprecated.
In order to program and use the Graphics Engine, one of the above APIs need to be used. The APIs can be used to create standalone applications, but is typically used as a back-end to accelerate various higher level application frameworks like Android, Qt, Xorg. The enablers for these frameworks are described in more detail in next sections.
Since the 3D accelerator (SGX core) is outside the ARM core, the Graphics drivers run on ARM core, and contain OS specific driver code to memory map the SGX core and program the engine from the OS running on the ARM core.
TI provides a Graphics SDK, that comes with drivers and example code for developing software based on the OpenGL-ES APIs. This page discusses the software aspects of programming the 3D hardware, using the Graphics SDK, from code running on the ARM.
Below table lists the various TI families supported by this SDK, and the SGX core information
|TI SOC Name||SGX Core||SGX Core Revision||SDK folder suffix||Max SGX Core Frequency (MHz)|
|OMAP35xx, AM35xx Rev.2.0||SGX530||1.0.3||es2.x||110|
|OMAP35xx, AM35xx Rev.3.1||SGX530||1.2.1||es3.x||110|
Use the procedure in below link
to determine the right version to install at run time.
Download Information for TI SGX Graphics SDK
The latest Linux Graphics SDK can be downloaded from the below link. The download does not require any registration.
The latest Android Graphics SDK can be downloaded from the below project pages.
http://code.google.com/p/rowboat/ (or) Directly via git, using
git clone git://gitorious.org/rowboat/ti_android_sgx_sdk.git TI_Android_SGX_SDK
Graphics SDK Quick Installation Guide
The below page discusses how to get started on the Graphics SDK, and includes debugging information.
- Release notes for all Linux Graphics SDK releases are maintained in this page.
- Release notes for all Android Graphics SDK releases are maintained in this page.
Debugging SGX Issues
This SGXDbg article provides step-by-step instructions for debugging SGX driver issues.
The following pages provide additional information that applies to a variety of platforms, including the OMAP35x:
- OMAP35x Graphics SDK Known Issues and Limitations lists issues related to the Graphics SDK software till 3.01.00.01 Graphics SDK version. For releases after 3.01.00.01 Graphics SDK version please refer to the release notes.
- For users who are on on the EZSDK 5.00.00.56 release and would like to update to the latest graphics SDK release 04.03.00.02 in their current EZSDK setup/installation, please review the upgrade instructions here.