[Mesa-dev] How do I get start about gallium?

[Corbin Simpson]

When you write a Gallium driver, it can be used by any frontend, including
GL, VG, GLES, etc. The only real hardware requirement is that the hardware
is *shaderful*; it needs to support vertex and fragment shaders.

Sending from a mobile, pardon the brevity. ~ C.
On Apr 18, 2011 7:11 AM, "Awin" <awin0628 at gmail.com> wrote:
> 於 2011/4/11 下午 11:23, Corbin Simpson 提到:
>> On Fri, Apr 8, 2011 at 4:17 AM, Awin<awin0628 at gmail.com> wrote:
>>> Hi all,
>>> I need to write a OpenGL driver for my company's IC, and base on
gallium,
>>> how do I get start? Is there any document or sample code to reference?
>> This is a remarkably candid question.
>>
>> In the Mesa tree, the Gallium headers (src/gallium/include/**/*.h)
>> describe the objects Gallium passes around. There are also Sphinx docs
>> (src/gallium/docs/) which probably haven't really been maintained in a
>> bit, but it's nice to think that they are somewhat accurate.
>>
>> Gallium is laid out like this: There is a struct called Winsys which
>> handles talking to your hardware backend (DRM, Windows kernel, etc.),
>> a struct called Screen which helps to manage your GPU's information
>> and resources, and a struct called Context which is, well, a rendering
>> context.
>>
>> Which SoC is this? Do you have docs? Are you going to open-source any
>> of your driver code?
>>
>> It's going to be a lot easier to answer your questions in realtime;
>> there's an IRC channel on Freenode, #dri-devel, which is the general
>> Gallium channel (among other things), and is a great place to ask
>> questions.
>>
>> Hope this helps somewhat,
>> ~ C.
>>
> Thanks for your reply,
> The SoC is still on design, that's a DTV chip with OpenVG engine, and
> some functions of OpenGL ES, that the reason I want to use gallium, I
> just need to implement driver interface(which can accelerate by HW) for
> OpenVG and OpenGL ES state tracker, and others use softpipe to draw. So
> I can use full function of SoC on VG or GL ES, am I right?
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