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fix compilation of stb_image_write.h with gcc -O3

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When compiling with -O3, gcc would complain that 'linear' might not be
initialized if comp is superior to 4.

In fact passing a value > 4 is an error anyway, but gcc does not know
that.  I changed the switch case to support comp > 4.  I don't think it
should affect the performances.
This commit is contained in:
Guillaume Chereau 2015-04-20 22:59:24 +08:00
parent 947bdcd027
commit 347e7838be
1 changed files with 4 additions and 4 deletions
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8
stb_image_write.h
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@ -294,8 +294,8 @@ void stbiw__write_hdr_scanline(FILE *f, int width, int comp, unsigned char *scra
linear[1] = scanline[x*comp + 1]; linear[1] = scanline[x*comp + 1];
linear[0] = scanline[x*comp + 0]; linear[0] = scanline[x*comp + 0];
break; break;
case 2: /* fallthrough */ default:
case 1: linear[0] = linear[1] = linear[2] = scanline[x*comp + 0]; linear[0] = linear[1] = linear[2] = scanline[x*comp + 0];
break; break;
} }
stbiw__linear_to_rgbe(rgbe, linear); stbiw__linear_to_rgbe(rgbe, linear);
@ -311,8 +311,8 @@ void stbiw__write_hdr_scanline(FILE *f, int width, int comp, unsigned char *scra
linear[1] = scanline[x*comp + 1]; linear[1] = scanline[x*comp + 1];
linear[0] = scanline[x*comp + 0]; linear[0] = scanline[x*comp + 0];
break; break;
case 2: /* fallthrough */ default:
case 1: linear[0] = linear[1] = linear[2] = scanline[x*comp + 0]; linear[0] = linear[1] = linear[2] = scanline[x*comp + 0];
break; break;
} }
stbiw__linear_to_rgbe(rgbe, linear); stbiw__linear_to_rgbe(rgbe, linear);