gallium: make max_anisotropy a unsigned bitfield member

saves us a dword in sampler state, hw can't do non-integer aniso degree anyway.
To allow aniso 1x (which seems of dubious value but some hardware (radeons)
have such a mode, and even d3d allows specifiying it) redefine anisotropic
filtering as disabled only if max_anistropy is 0.

1 files changed, 5 insertions, 5 deletions

diff --git a/src/gallium/drivers/r300/r300_state_inlines.h b/src/gallium/drivers/r300/r300_state_inlines.h
index 5df6815221..779ba2c7be 100644
--- a/src/gallium/drivers/r300/r300_state_inlines.h
+++ b/src/gallium/drivers/r300/r300_state_inlines.h
@@ -312,15 +312,15 @@ static INLINE uint32_t r300_translate_tex_filters(int min, int mag, int mip,
     return retval;
 }
 
-static INLINE uint32_t r300_anisotropy(float max_aniso)
+static INLINE uint32_t r300_anisotropy(unsigned max_aniso)
 {
-    if (max_aniso >= 16.0f) {
+    if (max_aniso >= 16) {
         return R300_TX_MAX_ANISO_16_TO_1;
-    } else if (max_aniso >= 8.0f) {
+    } else if (max_aniso >= 8) {
         return R300_TX_MAX_ANISO_8_TO_1;
-    } else if (max_aniso >= 4.0f) {
+    } else if (max_aniso >= 4) {
         return R300_TX_MAX_ANISO_4_TO_1;
-    } else if (max_aniso >= 2.0f) {
+    } else if (max_aniso >= 2) {
         return R300_TX_MAX_ANISO_2_TO_1;
     } else {
         return R300_TX_MAX_ANISO_1_TO_1;