swr: report a reasonable max lod bias

This is the same value that llvmpipe uses. Since swr uses the same
sampler logic, makes sense for this value to also be the same. Most
applications don't care.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tim Rowley <timothy.o.rowley@intel.com>

diff --git a/src/gallium/drivers/swr/swr_screen.cpp b/src/gallium/drivers/swr/swr_screen.cpp
index f7125ee..194b8f0 100644 (file)
--- a/src/gallium/drivers/swr/swr_screen.cpp
+++ b/src/gallium/drivers/swr/swr_screen.cpp
@@ -406,7 +406,7 @@ swr_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
       return 0.0;
    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
-      return 0.0;
+      return 16.0; /* arbitrary */
    case PIPE_CAPF_GUARD_BAND_LEFT:
    case PIPE_CAPF_GUARD_BAND_TOP:
    case PIPE_CAPF_GUARD_BAND_RIGHT: