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-rw-r--r--src/gallium/drivers/cell/spu/spu_funcs.c65
1 files changed, 44 insertions, 21 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_funcs.c b/src/gallium/drivers/cell/spu/spu_funcs.c
index b57ad3f3b81..1adf9de0e8d 100644
--- a/src/gallium/drivers/cell/spu/spu_funcs.c
+++ b/src/gallium/drivers/cell/spu/spu_funcs.c
@@ -35,41 +35,61 @@
#include <string.h>
#include <libmisc.h>
-#include <cos8_v.h>
-#include <sin8_v.h>
+#include <math.h>
+#include <cos14_v.h>
+#include <sin14_v.h>
#include "cell/common.h"
#include "spu_main.h"
#include "spu_funcs.h"
-#define M_PI 3.1415926
-
-
static vector float
spu_cos(vector float x)
{
-#if 0
- static const float scale = 1.0 / (2.0 * M_PI);
- x = x * spu_splats(scale); /* normalize */
- return _cos8_v(x);
-#else
- /* just pass-through to avoid trashing caller's stack */
- return x;
-#endif
+ return _cos14_v(x);
}
static vector float
spu_sin(vector float x)
{
-#if 0
- static const float scale = 1.0 / (2.0 * M_PI);
- x = x * spu_splats(scale); /* normalize */
- return _sin8_v(x); /* 8-bit accuracy enough?? */
-#else
- /* just pass-through to avoid trashing caller's stack */
- return x;
-#endif
+ return _sin14_v(x);
+}
+
+static vector float
+spu_pow(vector float x, vector float y)
+{
+ float z0 = powf(spu_extract(x,0), spu_extract(y,0));
+ float z1 = powf(spu_extract(x,1), spu_extract(y,1));
+ float z2 = powf(spu_extract(x,2), spu_extract(y,2));
+ float z3 = powf(spu_extract(x,3), spu_extract(y,3));
+ return (vector float) {z0, z1, z2, z3};
+}
+
+static vector float
+spu_exp2(vector float x)
+{
+ float z0 = powf(2.0f, spu_extract(x,0));
+ float z1 = powf(2.0f, spu_extract(x,1));
+ float z2 = powf(2.0f, spu_extract(x,2));
+ float z3 = powf(2.0f, spu_extract(x,3));
+ return (vector float) {z0, z1, z2, z3};
+}
+
+static vector float
+spu_log2(vector float x)
+{
+ /*
+ * log_base_2(x) = log(x) / log(2)
+ * 1.442695 = 1/log(2).
+ */
+ static const vector float k = {1.442695F, 1.442695F, 1.442695F, 1.442695F};
+ float z0 = logf(spu_extract(x,0));
+ float z1 = logf(spu_extract(x,1));
+ float z2 = logf(spu_extract(x,2));
+ float z3 = logf(spu_extract(x,3));
+ vector float v = (vector float) {z0, z1, z2, z3};
+ return spu_mul(v, k);
}
@@ -101,6 +121,9 @@ return_function_info(void)
funcs.num = 0;
add_func(&funcs, "spu_cos", &spu_cos);
add_func(&funcs, "spu_sin", &spu_sin);
+ add_func(&funcs, "spu_pow", &spu_pow);
+ add_func(&funcs, "spu_exp2", &spu_exp2);
+ add_func(&funcs, "spu_log2", &spu_log2);
/* Send the function info back to the PPU / main memory */
mfc_put((void *) &funcs, /* src in local store */