i965: Use float calculations when double is unnecessary.

Literals without an f/F suffix are of type double, and implicit
conversion rules specify that the float in (float op double) be
converted to a double before the operation is performed. I believe float
execution was intended (in nearly all cases) or is sufficient (in the
case of gen7_urb.c).

Removes a lot of float <-> double conversion instructions and replaces
many double instructions with float instructions which are cheaper.

   text     data      bss      dec      hex  filename
4928659   195160    26192  5150011   4e953b  i965_dri.so before
4928315   195152    26192  5149659   4e93db  i965_dri.so after

Reviewed-by: Iago Toral Quiroga <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_sampler_state.c b/src/mesa/drivers/dri/i965/brw_sampler_state.c
index 22ccbfe8461..2021bb3b460 100644
--- a/src/mesa/drivers/dri/i965/brw_sampler_state.c
+++ b/src/mesa/drivers/dri/i965/brw_sampler_state.c
@@ -425,11 +425,11 @@ brw_update_sampler_state(struct brw_context *brw,
 
    /* Enable anisotropic filtering if desired. */
    unsigned max_anisotropy = BRW_ANISORATIO_2;
-   if (sampler->MaxAnisotropy > 1.0) {
+   if (sampler->MaxAnisotropy > 1.0f) {
       min_filter = BRW_MAPFILTER_ANISOTROPIC;
       mag_filter = BRW_MAPFILTER_ANISOTROPIC;
 
-      if (sampler->MaxAnisotropy > 2.0) {
+      if (sampler->MaxAnisotropy > 2.0f) {
 	 max_anisotropy =
             MIN2((sampler->MaxAnisotropy - 2) / 2, BRW_ANISORATIO_16);
       }