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patch fixes

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This commit is contained in:
Jaime Passos 2019-09-23 18:25:16 -03:00
parent 73146a8338
commit 9c7b3f1d80
1 changed files with 21 additions and 13 deletions
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34
src/r_data.c
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@ -262,6 +262,8 @@ UINT32 ASTBlendPixel(RGBA_t background, RGBA_t foreground, int style, UINT8 alph
// if there's no pixel in here
if (!background.rgba)
output.s.alpha = foreground.s.alpha;
output.s.alpha = 0xFF;
return output.rgba;
}
#define clamp(c) max(min(c, 0xFF), 0x00);
else
@ -310,15 +312,23 @@ UINT32 ASTBlendPixel(RGBA_t background, RGBA_t foreground, int style, UINT8 alph
UINT8 ASTBlendPixel_8bpp(UINT8 background, UINT8 foreground, int style, UINT8 alpha)
{
if ((style == AST_TRANSLUCENT) && (alpha <= (10*255/11))) // Alpha style set to translucent? Is the alpha small enough for translucency?
// Alpha style set to translucent?
if (style == AST_TRANSLUCENT)
{
UINT8 *mytransmap;
if (alpha < 255/11) // Is the patch way too translucent? Don't render then.
return background;
// The equation's not exact but it works as intended. I'll call it a day for now.
mytransmap = transtables + ((8*(alpha) + 255/8)/(255 - 255/11) << FF_TRANSSHIFT);
if (background != 0xFF)
return *(mytransmap + (background<<8) + foreground);
// Is the alpha small enough for translucency?
if (alpha <= (10*255/11))
{
UINT8 *mytransmap;
// Is the patch way too translucent? Don't blend then.
if (alpha < 255/11)
return background;
// The equation's not exact but it works as intended. I'll call it a day for now.
mytransmap = transtables + ((8*(alpha) + 255/8)/(255 - 255/11) << FF_TRANSSHIFT);
if (background != 0xFF)
return *(mytransmap + (background<<8) + foreground);
}
else // just copy the pixel
return foreground;
}
// just copy the pixel
else if (style == AST_COPY)
@ -375,8 +385,7 @@ static inline void R_DrawBlendColumnInCache(column_t *patch, UINT8 *cache, texpa
if (count > 0)
{
for (; dest < cache + position + count; source++, dest++)
if (*dest != 0xFF)
*dest = ASTBlendPixel_8bpp(*dest, *source, originPatch->style, originPatch->alpha);
*dest = ASTBlendPixel_8bpp(*dest, *source, originPatch->style, originPatch->alpha);
}
patch = (column_t *)((UINT8 *)patch + patch->length + 4);
@ -384,7 +393,7 @@ static inline void R_DrawBlendColumnInCache(column_t *patch, UINT8 *cache, texpa
}
//
// R_DrawTransColumnInCache
// R_DrawBlendFlippedColumnInCache
// Similar to the one above except that the column is inverted.
//
static inline void R_DrawBlendFlippedColumnInCache(column_t *patch, UINT8 *cache, texpatch_t *originPatch, INT32 cacheheight, INT32 patchheight)
@ -419,8 +428,7 @@ static inline void R_DrawBlendFlippedColumnInCache(column_t *patch, UINT8 *cache
if (count > 0)
{
for (; dest < cache + position + count; --source, dest++)
if (*dest != 0xFF)
*dest = ASTBlendPixel_8bpp(*dest, *source, originPatch->style, originPatch->alpha);
*dest = ASTBlendPixel_8bpp(*dest, *source, originPatch->style, originPatch->alpha);
}
patch = (column_t *)((UINT8 *)patch + patch->length + 4);