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Cycles: fix compilation on 32-bit Windows for half-floats

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Reported by IRC user HG1.
This commit is contained in:
Sv. Lockal 2015-05-10 19:04:24 +00:00
parent c20c07f27a
commit 3ec168465d
1 changed files with 4 additions and 2 deletions
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6
intern/cycles/util/util_half.h
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@ -54,10 +54,12 @@ ccl_device_inline void float4_store_half(half *h, float4 f, float scale)
for(int i = 0; i < 4; i++) {
/* optimized float to half for pixels:
* assumes no negative, no nan, no inf, and sets denormal to 0 */
union { uint i; float f; } in;
float fscale = f[i] * scale;
float x = min(max(fscale, 0.0f), 65504.0f);
in.f = (fscale > 0.0f)? ((fscale < 65504.0f)? fscale: 65504.0f): 0.0f;
int x = in.i;
int absolute = __float_as_uint(in) & 0x7FFFFFFF;
int absolute = x & 0x7FFFFFFF;
int Z = absolute + 0xC8000000;
int result = (absolute < 0x38800000)? 0: Z;
int rshift = (result >> 13);