diff options
Diffstat (limited to 'src/mesa/main')
| -rw-r--r-- | src/mesa/main/imports.c | 17 | ||||
| -rw-r--r-- | src/mesa/main/macros.h | 11 |
2 files changed, 12 insertions, 16 deletions
diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c index c9e00cf7528..f2ef84f35c1 100644 --- a/src/mesa/main/imports.c +++ b/src/mesa/main/imports.c @@ -460,7 +460,7 @@ _mesa_inv_sqrtf(float n) #if 0 /* not used, see below -BP */ float r3, x3, y3; #endif - union { float f; unsigned int i; } u; + fi_type u; unsigned int magic; /* @@ -649,10 +649,10 @@ _mesa_bitcount(unsigned int n) GLhalfARB _mesa_float_to_half(float val) { - const int flt = *((int *) (void *) &val); - const int flt_m = flt & 0x7fffff; - const int flt_e = (flt >> 23) & 0xff; - const int flt_s = (flt >> 31) & 0x1; + const fi_type fi = {val}; + const int flt_m = fi.i & 0x7fffff; + const int flt_e = (fi.i >> 23) & 0xff; + const int flt_s = (fi.i >> 31) & 0x1; int s, e, m = 0; GLhalfARB result; @@ -739,7 +739,8 @@ _mesa_half_to_float(GLhalfARB val) const int m = val & 0x3ff; const int e = (val >> 10) & 0x1f; const int s = (val >> 15) & 0x1; - int flt_m, flt_e, flt_s, flt; + int flt_m, flt_e, flt_s; + fi_type fi; float result; /* sign bit */ @@ -774,8 +775,8 @@ _mesa_half_to_float(GLhalfARB val) flt_m = m << 13; } - flt = (flt_s << 31) | (flt_e << 23) | flt_m; - result = *((float *) (void *) &flt); + fi.i = (flt_s << 31) | (flt_e << 23) | flt_m; + result = fi.f; return result; } diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h index 3d9a1aba98d..f0ea463fb92 100644 --- a/src/mesa/main/macros.h +++ b/src/mesa/main/macros.h @@ -202,17 +202,12 @@ do { \ #endif /** - * Copy a 4-element float vector (avoid using FPU registers) - * XXX Could use two 64-bit moves on 64-bit systems + * Copy a 4-element float vector + * memcpy seems to be most efficient */ #define COPY_4FV( DST, SRC ) \ do { \ - const GLuint *_s = (const GLuint *) (SRC); \ - GLuint *_d = (GLuint *) (DST); \ - _d[0] = _s[0]; \ - _d[1] = _s[1]; \ - _d[2] = _s[2]; \ - _d[3] = _s[3]; \ + _mesa_memcpy(DST, SRC, sizeof(GLfloat) * 4); \ } while (0) /** Copy \p SZ elements into a 4-element vector */ |