lavapipe: disable VK_FORMAT_FEATURE_2_COLOR_ATTACHMENT_BLEND_BIT for int formats

this is unsupported and undefined by the spec

cc: mesa-stable

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21099>

diff --git a/src/gallium/frontends/lavapipe/lvp_formats.c b/src/gallium/frontends/lavapipe/lvp_formats.c
index 0a4a854..04d46c3 100644 (file)
--- a/src/gallium/frontends/lavapipe/lvp_formats.c
+++ b/src/gallium/frontends/lavapipe/lvp_formats.c
@@ -135,7 +135,7 @@ lvp_physical_device_get_format_properties(struct lvp_physical_device *physical_d
                                                      PIPE_TEXTURE_2D, 0, 0, PIPE_BIND_RENDER_TARGET)) {
       features |= VK_FORMAT_FEATURE_2_COLOR_ATTACHMENT_BIT;
       /* SNORM blending on llvmpipe fails CTS - disable for now */
-      if (!util_format_is_snorm(pformat))
+      if (!util_format_is_snorm(pformat) && !util_format_is_pure_integer(pformat))
          features |= VK_FORMAT_FEATURE_2_COLOR_ATTACHMENT_BLEND_BIT;
    }