summaryrefslogtreecommitdiffstats
path: root/include/GLES
diff options
context:
space:
mode:
authorBas Nieuwenhuizen <[email protected]>2019-04-28 01:50:36 +0200
committerBas Nieuwenhuizen <[email protected]>2019-05-19 00:38:03 +0000
commit4689e98fe884d9412b72fd6293b6d6a69e3ef68e (patch)
tree905e866730a1af5adb88d50a3335de5cc6e7c1f4 /include/GLES
parentccb8ea7acfb710c6c5298f3ffcadbe3d79b9b913 (diff)
vulkan/wsi: Set X11 minImageCount to 3.
For IMMEDIATE and FIFO, most games work in a pipelined manner where the can produce frames at a rate of 1/MAX(CPU duration, GPU duration), but the render latency is CPU duration + GPU duration. This means that with scanout from pageflipping we need 3 frames to run full speed: 1) CPU rendering work 2) GPU rendering work 3) scanout Once we have a nonblocking acquire that returns a semaphore we can merge 1 and 3. Hence the ideal implementation needs only 2 images, but games cannot tellwe currently do not have an ideal implementation and that hence they need to allocate 3 images. So let us do it for them. This is a tradeoff as it uses more memory than needed for non-fullscreen and non-performance intensive applications. Since this is pretty much a TODO that can use the context I added this as a comment. Acked-by: Jason Ekstrand <[email protected]> Acked-by: Samuel Pitoiset <[email protected]>
Diffstat (limited to 'include/GLES')
0 files changed, 0 insertions, 0 deletions