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[ADD] Added sepia function

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This commit is contained in:
csBlueChip 2009-09-04 15:29:38 +00:00
parent f57e01bcfe
commit b6e0bef531
2 changed files with 32 additions and 2 deletions
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29
GRRLIB/GRRLIB/GRRLIB_bmfx.c
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@ -74,7 +74,9 @@ void GRRLIB_BMFX_Grayscale (const GRRLIB_texImg *texsrc,
for (x = 0; x < texsrc->w; x++) { for (x = 0; x < texsrc->w; x++) {
color = GRRLIB_GetPixelFromtexImg(x, y, texsrc); color = GRRLIB_GetPixelFromtexImg(x, y, texsrc);
gray = (((color >> 24 & 0xFF)*77 + (color >> 16 & 0xFF)*150 + (color >> 8 & 0xFF)*28) / (255)); gray = (((color >> 24 & 0xFF)* 77 +
(color >> 16 & 0xFF)*150 +
(color >> 8 & 0xFF)* 28 ) / 255);
GRRLIB_SetPixelTotexImg(x, y, texdest, GRRLIB_SetPixelTotexImg(x, y, texdest,
((gray << 24) | (gray << 16) | (gray << 8) | (color & 0xFF))); ((gray << 24) | (gray << 16) | (gray << 8) | (color & 0xFF)));
@ -83,6 +85,31 @@ void GRRLIB_BMFX_Grayscale (const GRRLIB_texImg *texsrc,
GRRLIB_SetHandle(texdest, 0,0); GRRLIB_SetHandle(texdest, 0,0);
} }
/**
* Change a texture to sepia (old photo style).
* @see GRRLIB_FlushTex
* @param texsrc The texture source.
* @param texdest The texture grayscaled destination.
* @author elisherer
*/
void GRRLIB_BMFX_Sepia (const GRRLIB_texImg *texsrc, GRRLIB_texImg *texdest) {
unsigned int x, y;
u16 sr, sg, sb;
u32 color;
for (y = 0; y < texsrc->h; y++) {
for (x = 0; x < texsrc->w; x++) {
color = GRRLIB_GetPixelFromtexImg(x, y, texsrc);
sr = R(color)*0.393 + G(color)*0.769 + B(color)*0.189;
sg = R(color)*0.349 + G(color)*0.686 + B(color)*0.168;
sb = R(color)*0.272 + G(color)*0.534 + B(color)*0.131;
if (sr>255) sr=255; if (sg>255) sg=255; if (sb>255) sb=255;
GRRLIB_SetPixelTotexImg(x, y, texdest,
GRRLIB_GetColor(sr,sg,sb,color&0xFF));
}
}
GRRLIB_SetHandle(texdest, 0,0);
}
/** /**
* Invert colors of the texture. * Invert colors of the texture.
* @see GRRLIB_FlushTex * @see GRRLIB_FlushTex

3
GRRLIB/GRRLIB/grrlib/GRRLIB__lib.h
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@ -56,6 +56,9 @@ void GRRLIB_BMFX_FlipV (const GRRLIB_texImg *texsrc,
void GRRLIB_BMFX_Grayscale (const GRRLIB_texImg *texsrc, void GRRLIB_BMFX_Grayscale (const GRRLIB_texImg *texsrc,
GRRLIB_texImg *texdest) ; GRRLIB_texImg *texdest) ;
void GRRLIB_BMFX_Sepia (const GRRLIB_texImg *texsrc,
GRRLIB_texImg *texdest) ;
void GRRLIB_BMFX_Invert (const GRRLIB_texImg *texsrc, void GRRLIB_BMFX_Invert (const GRRLIB_texImg *texsrc,
GRRLIB_texImg *texdest) ; GRRLIB_texImg *texdest) ;