This is what radeonsi does.
---
src/amd/vulkan/radv_device.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 4fc7392e65e6..35b686ab7f02 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -831,7 +831,7 @@ void radv_GetPhysicalDeviceProperties(
.maxViewports = MAX_VIEWPORTS,
.maxViewportDimensions = { (1 << 14), (1 <<
14) },
.viewportBoundsRange = { INT16_MIN,
INT16_MAX },
- .viewportSubPixelBits = 13, /* We take a
float? */
+ .viewportSubPixelBits = 8,
.minMemoryMapAlignment = 4096, /* A page */
.minTexelBufferOffsetAlignment = 1,
.minUniformBufferOffsetAlignment = 4,
--
2.16.1
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