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Merge branch 'master' of https://github.com/Skylark13/stb into working

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Sean Barrett 2014-08-16 13:50:16 -07:00
commit caf6d08f2b
1 changed files with 6 additions and 4 deletions
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10
stb_image_write.h
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@ -42,7 +42,7 @@ USAGE:
a row of pixels to the first byte of the next row of pixels. a row of pixels to the first byte of the next row of pixels.
PNG creates output files with the same number of components as the input. PNG creates output files with the same number of components as the input.
The BMP and TGA formats expand Y to RGB in the file format. BMP does not The BMP format expands Y to RGB in the file format and does not
output alpha. output alpha.
PNG supports writing rectangles of data even when the bytes storing rows of PNG supports writing rectangles of data even when the bytes storing rows of
@ -128,8 +128,8 @@ static void write_pixels(FILE *f, int rgb_dir, int vdir, int x, int y, int comp,
if (write_alpha < 0) if (write_alpha < 0)
fwrite(&d[comp-1], 1, 1, f); fwrite(&d[comp-1], 1, 1, f);
switch (comp) { switch (comp) {
case 1: case 1:
case 2: write3(f, d[0],d[0],d[0]); case 2: fwrite(d, 1, 1, f);
break; break;
case 4: case 4:
if (!write_alpha) { if (!write_alpha) {
@ -179,8 +179,10 @@ int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *dat
int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data) int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data)
{ {
int has_alpha = !(comp & 1); int has_alpha = !(comp & 1);
int colorbytes = comp - has_alpha;
int format = colorbytes < 2 ? 3 : 2; // 3 color channels (RGB/RGBA) = 2, 1 color channel (Y/YA) = 3
return outfile(filename, -1,-1, x, y, comp, (void *) data, has_alpha, 0, return outfile(filename, -1,-1, x, y, comp, (void *) data, has_alpha, 0,
"111 221 2222 11", 0,0,2, 0,0,0, 0,0,x,y, 24+8*has_alpha, 8*has_alpha); "111 221 2222 11", 0,0,format, 0,0,0, 0,0,x,y, (colorbytes+has_alpha)*8, has_alpha*8);
} }
// stretchy buffer; stbiw__sbpush() == vector<>::push_back() -- stbiw__sbcount() == vector<>::size() // stretchy buffer; stbiw__sbpush() == vector<>::push_back() -- stbiw__sbcount() == vector<>::size()