radv: advertise 8 bits of subpixel precision for viewports

This is what radeonsi does.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index d88d5f06422091dc827ded8cc7dc89b7dab71b56..25c0d47da8b580c0a9ef26cff0a25df8761d2a4a 100644 (file)
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -865,7 +865,7 @@ 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,