The spec of DTV SoC was release. I got the HW spec. And I found the design was not consider about "shader". Our HW architecture was a VG pipe line, almost like http://www.khronos.org/assets/uploads/apis/openvg_pipeline1.jpg Is this means that it is not make sense to write a Gallium driver for GL/VG state tracker?
Corbin Simpson <mostawesomed...@gmail.com> 於 2011年4月19日上午2:17 寫道： > 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" <awin0...@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<awin0...@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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