On Tue, Oct 02, 2012 at 06:01:03PM +1000, Dave Airlie wrote: > On Mon, Oct 1, 2012 at 4:45 PM, Nikolskiy Alexey > <[email protected]> wrote: > > Good time of day! > > > > My name is Alexey Nikolskiy. I am a student in the St.Petersburg State > > Polytechnical University. Now I am doing my research arond operating system > > we are developing in our university. So I am looking for creating some > > graphics window system support for our operating system. All we need is > > basic 2D graphics support for this. Currently we are using VBE through real > > mode emulation in protected mode to make modeset functions enabled with > > LFB. After that we have several asm functions for double-buffered graphics > > engine. But enabling alpha blending makes performence issues so far. So now > > I am looking for the way I can get real GPU acceleration for this. I have > > some experience in driver writing (especially ethernet cards), so I can > > port some drivers from Linux to our OS. Out OS is not a Linux, so to port > > any driver I have to understand which functionsly I expect from the driver > > (like packet send/receive functionality from ethernet cards), then I serach > > in linux driver for setup an > d > > other functions and then I port them by creating own ethernet driver. But > > with graphics driver it is not that easy for me. > > I really want to get intel HD graphis card support (basic 2D acceleration > > from intel GPU) so I have explored your documentation and driver sources > > and I have found a lot of useful information about all of this stuff. But > > the ammount of information is too big, so what I need is some guidence of > > basic actions to perform to make graphics mode setup (like 1024x768x24) and > > then use some functions that allows me to draw images on the screen with > > apha blending. I do not need 3D acceleration > > > > Please, if it is possible, provide me with some guide about basic intel HD > > graphics setup, by extending this one: > > 1. Find PCI device (using class, device and vendor IDs) - it is ok I have > > done it. > > 2. Map MMIO areas. - it is also I have done. I also have found MMIO > > register map in your manuals. > > 3. Parse Video BIOS to understand modes supported... - or how I can get > > supported modes list? > > 4. Get connector/monitor status - how I can do it? > > 5. Setup graphics mode (1024x768x24) on some of enabled connectors - using > > VGA and VGA extended registers I guess. How I can do this? Hwere I can find > > some code examples? > > 6. Setup overlay/screen/display...or some other objects on GPU? - what I > > need to setup and in what order? > > 7. Setup some command stream and DMA areas...- for commands to be executed. > > - what I need to setup and in what order? > > 8. What commands I have to send and in what order to make some image in > > memory to be drawn with alpha blending on the screen? > > > > Any information will be extreamly helpful. > > I'm not 100% the Intel 2D blit can do alpha blending, if it can't then > you need to use the 3D engine,
Nope, can't do, so you need the 3d engine. For everything else: You're in for an _aweful_ lot of work to get that going ... -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
