From e509afacf3fb277f944f6d4ebf9d88d4a27c6df6 Mon Sep 17 00:00:00 2001 From: =?utf8?q?V=C3=A4in=C3=B6=20M=C3=A4kel=C3=A4?= Date: Tue, 21 Feb 2023 14:39:21 +0200 Subject: [PATCH] hasvk: Disable non-zero fast clears for 8xMSAA images Using texelFetch to read samples from an 8xMSAA fast cleared image on Haswell can read transparent black pixels around triangles from where there should be none. This issue isn't present when using sample shading, resolving the image using vkCmdResolveImage or in a copy the image. The easiest way to fix this is by just disabling non-zero fast clears for 8xMSAA images. Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7587 Cc: mesa-stable Reviewed-by: Filip Gawin Part-of: --- src/intel/vulkan_hasvk/anv_image.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/intel/vulkan_hasvk/anv_image.c b/src/intel/vulkan_hasvk/anv_image.c index db7dcf5..d989f96 100644 --- a/src/intel/vulkan_hasvk/anv_image.c +++ b/src/intel/vulkan_hasvk/anv_image.c @@ -375,6 +375,13 @@ can_fast_clear_with_non_zero_color(const struct intel_device_info *devinfo, uint32_t plane, const VkImageFormatListCreateInfo *fmt_list) { + /* Triangles rendered on non-zero fast cleared images with 8xMSAA can get + * black pixels around them on Haswell. + */ + if (devinfo->ver == 7 && image->vk.samples == 8) { + return false; + } + /* If we don't have an AUX surface where fast clears apply, we can return * early. */ -- 2.7.4