[Mesa-dev] [PATCH] radv: allocate thin textures as linear.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

This is ported from radeonsi, and avoids the bug in the
addrlib code. This should probably be something addrlib
does for us, but for now this fixes the regression without
changing addrlib and aligns us with radeonsi.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/amd/vulkan/radv_image.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/amd/vulkan/radv_image.c b/src/amd/vulkan/radv_image.c
index 0ada7ff..3586e4c 100644
--- a/src/amd/vulkan/radv_image.c
+++ b/src/amd/vulkan/radv_image.c
@@ -41,6 +41,13 @@ radv_choose_tiling(struct radv_device *Device,
 		return RADEON_SURF_MODE_LINEAR_ALIGNED;
 	}
 
+	/* Textures with a very small height are recommended to be linear. */
+	if (pCreateInfo->imageType == VK_IMAGE_TYPE_1D ||
+	    /* Only very thin and long 2D textures should benefit from
+	     * linear_aligned. */
+	    (pCreateInfo->extent.width > 8 && pCreateInfo->extent.height <= 2))
+		return RADEON_SURF_MODE_LINEAR_ALIGNED;
+
 	/* MSAA resources must be 2D tiled. */
 	if (pCreateInfo->samples > 1)
 		return RADEON_SURF_MODE_2D;
-- 
2.9.3