Mercurial > hg > dmlib
changeset 1732:07111a60cd4e
Add dmSetMixedColorC64Palette() for setting a 256 entry "mixed color"
palette, which consists of averaged 16 x 16 matrix of C64 palette.
This can be used for rendering images that use color interlace.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Fri, 08 Jun 2018 22:09:00 +0300 |
| parents | 474055f25ab0 |
| children | 59c2b08a80a6 |
| files | tools/lib64gfx.c tools/lib64gfx.h |
| diffstat | 2 files changed, 25 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/tools/lib64gfx.c Fri Jun 08 22:07:05 2018 +0300 +++ b/tools/lib64gfx.c Fri Jun 08 22:09:00 2018 +0300 @@ -115,6 +115,29 @@ } +BOOL dmSetMixedColorC64Palette(DMImage *img) +{ + if (!dmImagePaletteAlloc(dst, C64_NCOLORS * C64_NCOLORS, -1)) + return FALSE; + + int n = 0; + for (int n1 = 0; n1 < C64_NCOLORS; n1++) + { + const DMColor *col1 = &dmDefaultC64Palette[n1]; + for (int n2 = 0; n2 < C64_NCOLORS; n2++) + { + const DMColor *col2 = &dmDefaultC64Palette[n2]; + dst->pal[n].r = (col1->r + col2->r) / 2; + dst->pal[n].g = (col1->g + col2->g) / 2; + dst->pal[n].b = (col1->b + col2->b) / 2; + n++; + } + } + + return TRUE; +} + + BOOL dmCompareAddr16(const Uint8 *buf, const size_t offs, const Uint16 addr) { return buf[offs ] == DM_GET_ADDR_LO(addr) &&
--- a/tools/lib64gfx.h Fri Jun 08 22:07:05 2018 +0300 +++ b/tools/lib64gfx.h Fri Jun 08 22:09:00 2018 +0300 @@ -284,6 +284,8 @@ void dmC64ImageDump(FILE *fh, const DMC64Image *img, const DMC64ImageFormat *fmt); void dmSetDefaultC64Palette(DMImage *img); +BOOL dmSetMixedColorC64Palette(DMImage *img); + BOOL dmCompareAddr16(const Uint8 *buf, const size_t offs, const Uint16 addr); int dmC64ImageGetNumBanks(const DMC64ImageFormat *fmt);