Ben Skeggs wrote: > Am Freitag, den 21.09.2007, 08:45 +0100 schrieb Keith Whitwell: >> Brian Paul wrote: >>> Ben Skeggs wrote: >>>> I've been playing gallium on NV40 hardware a bit this week, so far it >>>> seems very nice. However... :) >>>> >>>> The hardware supports selective clearing of each channel of the primary >>>> render target, depth, and stencil buffers in a single operation. The >>>> current buffer clear interface is called with separate pipe_surface >>>> structs for each GL_x_BUFFER_BIT, which makes it difficult to use this >>>> functionality (which is somewhat faster when clearing both colour and >>>> depth/stencil buffers at the same time). >>>> >>>> Is there any plan for a pipe->fb_clear() (for example) interface, which >>>> would pass in a bit mask saying "clear these buffers that are currently >>>> bound to the framebuffer", similar to the interface in the "old" driver >>>> model? >>> If you can also specify the channel mask for clearing each buffer, you'd >>> probably want something like: >>> >>> clear(uint numSurfaces, pipe_surface **surfaces, const uint *masks) >> I see reasonable uses for clearing fullscreen color, depth and stencil >> independently. There's also a case that we should be able to pass down >> a list of fullscreen clears so that the driver can process them as >> efficiently as possible. > Yes, this is what I was after. The ability to clear some combination of > colour/depth/stencil buffers in one operation, I don't care for the > ability to clear R/G/B/A individually, was just mentioning that's how > the hw implements clears :)
OK. If you want to change clear() to take a list of surfaces, go ahead. -Brian ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
