#include <math.h>
#include <cos14_v.h>
#include <sin14_v.h>
+#include <transpose_matrix4x4.h>
#include "cell/common.h"
#include "spu_main.h"
#include "spu_funcs.h"
+/** For "return"-ing four vectors */
+struct vec_4x4
+{
+ vector float v[4];
+};
+
+
static vector float
spu_cos(vector float x)
{
return spu_mul(v, k);
}
+static struct vec_4x4
+spu_txp(vector float s, vector float t, vector float r, vector float q,
+ unsigned unit)
+{
+ //const uint unit = 0;
+ struct vec_4x4 colors;
+ vector float coords[4];
+
+ coords[0] = s;
+ coords[1] = t;
+ coords[2] = r;
+ coords[3] = q;
+ _transpose_matrix4x4(coords, coords);
+
+ /* get four texture samples */
+ colors.v[0] = spu.sample_texture[unit](unit, coords[0]);
+ colors.v[1] = spu.sample_texture[unit](unit, coords[1]);
+ colors.v[2] = spu.sample_texture[unit](unit, coords[2]);
+ colors.v[3] = spu.sample_texture[unit](unit, coords[3]);
+
+ _transpose_matrix4x4(colors.v, colors.v);
+ return colors;
+}
+
+/**
+ * Add named function to list of "exported" functions that will be
+ * made available to the PPU-hosted code generator.
+ */
static void
-add_func(struct cell_spu_function_info *spu_functions,
- const char *name, void *addr)
+export_func(struct cell_spu_function_info *spu_functions,
+ const char *name, void *addr)
{
uint n = spu_functions->num;
ASSERT(strlen(name) < 16);
strcpy(spu_functions->names[n], name);
spu_functions->addrs[n] = (uint) addr;
spu_functions->num++;
+ ASSERT(spu_functions->num <= 16);
}
ASSERT(sizeof(funcs) == 256); /* must be multiple of 16 bytes */
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);
+ export_func(&funcs, "spu_cos", &spu_cos);
+ export_func(&funcs, "spu_sin", &spu_sin);
+ export_func(&funcs, "spu_pow", &spu_pow);
+ export_func(&funcs, "spu_exp2", &spu_exp2);
+ export_func(&funcs, "spu_log2", &spu_log2);
+ export_func(&funcs, "spu_txp", &spu_txp);
/* Send the function info back to the PPU / main memory */
mfc_put((void *) &funcs, /* src in local store */