From df0c8e92d40a01c5909f6102054abc2d471a89c7 Mon Sep 17 00:00:00 2001 From: Andreas Haferburg Date: Mon, 14 Oct 2019 14:05:36 +0200 Subject: [PATCH] Fixed compiler warnings C4244 conversion from 'int' to 'unsigned char'/'unsigned short'. --- stb_dxt.h | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/stb_dxt.h b/stb_dxt.h index 6a76b1c..aa4df30 100644 --- a/stb_dxt.h +++ b/stb_dxt.h @@ -120,7 +120,7 @@ static void stb__From16Bit(unsigned char *out, unsigned short v) static unsigned short stb__As16Bit(int r, int g, int b) { - return (stb__Mul8Bit(r,31) << 11) + (stb__Mul8Bit(g,63) << 5) + stb__Mul8Bit(b,31); + return (unsigned short)((stb__Mul8Bit(r,31) << 11) + (stb__Mul8Bit(g,63) << 5) + stb__Mul8Bit(b,31)); } // linear interpolation at 1/3 point between a and b, using desired rounding type @@ -139,9 +139,9 @@ static int stb__Lerp13(int a, int b) // lerp RGB color static void stb__Lerp13RGB(unsigned char *out, unsigned char *p1, unsigned char *p2) { - out[0] = stb__Lerp13(p1[0], p2[0]); - out[1] = stb__Lerp13(p1[1], p2[1]); - out[2] = stb__Lerp13(p1[2], p2[2]); + out[0] = (unsigned char)stb__Lerp13(p1[0], p2[0]); + out[1] = (unsigned char)stb__Lerp13(p1[1], p2[1]); + out[2] = (unsigned char)stb__Lerp13(p1[2], p2[2]); } /****************************************************************************/ @@ -163,11 +163,11 @@ static void stb__PrepareOptTable(unsigned char *Table,const unsigned char *expan // +-1.5% error, but nowhere in the spec does it say that the error has to be // unbiased - better safe than sorry). err += STBD_ABS(maxe - mine) * 3 / 100; - + if(err < bestErr) - { - Table[i*2+0] = mx; - Table[i*2+1] = mn; + { + Table[i*2+0] = (unsigned char)mx; + Table[i*2+1] = (unsigned char)mn; bestErr = err; } } @@ -488,13 +488,13 @@ static int stb__RefineBlock(unsigned char *block, unsigned short *pmax16, unsign fg = frb * 63.0f / 31.0f; // solve. - max16 = stb__sclamp((At1_r*yy - At2_r*xy)*frb+0.5f,0,31) << 11; - max16 |= stb__sclamp((At1_g*yy - At2_g*xy)*fg +0.5f,0,63) << 5; - max16 |= stb__sclamp((At1_b*yy - At2_b*xy)*frb+0.5f,0,31) << 0; + max16 = (unsigned short)(stb__sclamp((At1_r*yy - At2_r*xy)*frb+0.5f,0,31) << 11); + max16 |= (unsigned short)(stb__sclamp((At1_g*yy - At2_g*xy)*fg +0.5f,0,63) << 5); + max16 |= (unsigned short)(stb__sclamp((At1_b*yy - At2_b*xy)*frb+0.5f,0,31) << 0); - min16 = stb__sclamp((At2_r*xx - At1_r*xy)*frb+0.5f,0,31) << 11; - min16 |= stb__sclamp((At2_g*xx - At1_g*xy)*fg +0.5f,0,63) << 5; - min16 |= stb__sclamp((At2_b*xx - At1_b*xy)*frb+0.5f,0,31) << 0; + min16 = (unsigned short)(stb__sclamp((At2_r*xx - At1_r*xy)*frb+0.5f,0,31) << 11); + min16 |= (unsigned short)(stb__sclamp((At2_g*xx - At1_g*xy)*fg +0.5f,0,63) << 5); + min16 |= (unsigned short)(stb__sclamp((At2_b*xx - At1_b*xy)*frb+0.5f,0,31) << 0); } *pmin16 = min16; @@ -592,8 +592,8 @@ static void stb__CompressAlphaBlock(unsigned char *dest,unsigned char *src, int } // encode them - ((unsigned char *)dest)[0] = mx; - ((unsigned char *)dest)[1] = mn; + dest[0] = (unsigned char)mx; + dest[1] = (unsigned char)mn; dest += 2; // determine bias and emit color indices @@ -622,7 +622,7 @@ static void stb__CompressAlphaBlock(unsigned char *dest,unsigned char *src, int // write index mask |= ind << bits; if((bits += 3) >= 8) { - *dest++ = mask; + *dest++ = (unsigned char)mask; mask >>= 8; bits -= 8; } @@ -633,10 +633,10 @@ static void stb__InitDXT() { int i; for(i=0;i<32;i++) - stb__Expand5[i] = (i<<3)|(i>>2); + stb__Expand5[i] = (unsigned char)((i<<3)|(i>>2)); for(i=0;i<64;i++) - stb__Expand6[i] = (i<<2)|(i>>4); + stb__Expand6[i] = (unsigned char)((i<<2)|(i>>4)); for(i=0;i<256+16;i++) {