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Gradient skincolors for MD2 blend textures

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This commit is contained in:
TehRealSalt 2019-05-26 03:41:18 -04:00
parent 33492573f4
commit dca1a05a7f
2 changed files with 93 additions and 76 deletions
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167
src/hardware/hw_md2.c
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@ -653,13 +653,12 @@ spritemd2found:
// 0.2126 to red // 0.2126 to red
// 0.7152 to green // 0.7152 to green
// 0.0722 to blue // 0.0722 to blue
// (See this same define in k_kart.c!) // (See this same define in hw_md2.c!)
#define SETBRIGHTNESS(brightness,r,g,b) \ #define SETBRIGHTNESS(brightness,r,g,b) \
brightness = (UINT8)(((1063*((UINT16)r)/5000) + (3576*((UINT16)g)/5000) + (361*((UINT16)b)/5000)) / 3) brightness = (UINT8)(((1063*(UINT16)(r))/5000) + ((3576*(UINT16)(g))/5000) + ((361*(UINT16)(b))/5000))
static void HWR_CreateBlendedTexture(GLPatch_t *gpatch, GLPatch_t *blendgpatch, GLMipmap_t *grmip, INT32 skinnum, skincolors_t color) static void HWR_CreateBlendedTexture(GLPatch_t *gpatch, GLPatch_t *blendgpatch, GLMipmap_t *grmip, INT32 skinnum, skincolors_t color)
{ {
UINT8 i;
UINT16 w = gpatch->width, h = gpatch->height; UINT16 w = gpatch->width, h = gpatch->height;
UINT32 size = w*h; UINT32 size = w*h;
RGBA_t *image, *blendimage, *cur, blendcolor; RGBA_t *image, *blendimage, *cur, blendcolor;
@ -684,102 +683,120 @@ static void HWR_CreateBlendedTexture(GLPatch_t *gpatch, GLPatch_t *blendgpatch,
image = gpatch->mipmap.grInfo.data; image = gpatch->mipmap.grInfo.data;
blendimage = blendgpatch->mipmap.grInfo.data; blendimage = blendgpatch->mipmap.grInfo.data;
blendcolor = V_GetColor(0); // initialize
// Average all of the translation's colors while (size--)
{ {
const UINT8 div = 6; UINT16 brightness;
const UINT8 start = 4;
UINT32 r, g, b;
blendcolor = V_GetColor(colortranslations[color][start]); // Don't bother with blending the pixel if the alpha of the blend pixel is 0
r = (UINT32)(blendcolor.s.red*blendcolor.s.red); if (skinnum == TC_RAINBOW)
g = (UINT32)(blendcolor.s.green*blendcolor.s.green);
b = (UINT32)(blendcolor.s.blue*blendcolor.s.blue);
for (i = 1; i < div; i++)
{
RGBA_t nextcolor = V_GetColor(colortranslations[color][start+i]);
r += (UINT32)(nextcolor.s.red*nextcolor.s.red);
g += (UINT32)(nextcolor.s.green*nextcolor.s.green);
b += (UINT32)(nextcolor.s.blue*nextcolor.s.blue);
}
blendcolor.s.red = (UINT8)(FixedSqrt((r/div)<<FRACBITS)>>FRACBITS);
blendcolor.s.green = (UINT8)(FixedSqrt((g/div)<<FRACBITS)>>FRACBITS);
blendcolor.s.blue = (UINT8)(FixedSqrt((b/div)<<FRACBITS)>>FRACBITS);
}
// rainbow support, could theoretically support boss ones too
if (skinnum == TC_RAINBOW)
{
while (size--)
{ {
if (image->s.alpha == 0 && blendimage->s.alpha == 0) if (image->s.alpha == 0 && blendimage->s.alpha == 0)
{ {
// Don't bother with blending the pixel if the alpha of the blend pixel is 0
cur->rgba = image->rgba; cur->rgba = image->rgba;
cur++; image++; blendimage++;
continue;
} }
else else
{ {
UINT32 tempcolor; UINT16 imagebright, blendbright;
UINT16 imagebright, blendbright, finalbright, colorbright;
SETBRIGHTNESS(imagebright,image->s.red,image->s.green,image->s.blue); SETBRIGHTNESS(imagebright,image->s.red,image->s.green,image->s.blue);
SETBRIGHTNESS(blendbright,blendimage->s.red,blendimage->s.green,blendimage->s.blue); SETBRIGHTNESS(blendbright,blendimage->s.red,blendimage->s.green,blendimage->s.blue);
// slightly dumb average between the blend image color and base image colour, usually one or the other will be fully opaque anyway // slightly dumb average between the blend image color and base image colour, usually one or the other will be fully opaque anyway
finalbright = (imagebright*(255-blendimage->s.alpha))/255 + (blendbright*blendimage->s.alpha)/255; brightness = (imagebright*(255-blendimage->s.alpha))/255 + (blendbright*blendimage->s.alpha)/255;
SETBRIGHTNESS(colorbright,blendcolor.s.red,blendcolor.s.green,blendcolor.s.blue);
tempcolor = (finalbright*blendcolor.s.red)/colorbright;
tempcolor = min(255, tempcolor);
cur->s.red = (UINT8)tempcolor;
tempcolor = (finalbright*blendcolor.s.green)/colorbright;
tempcolor = min(255, tempcolor);
cur->s.green = (UINT8)tempcolor;
tempcolor = (finalbright*blendcolor.s.blue)/colorbright;
tempcolor = min(255, tempcolor);
cur->s.blue = (UINT8)tempcolor;
cur->s.alpha = image->s.alpha;
} }
cur++; image++; blendimage++;
} }
} else
else
{
while (size--)
{ {
if (blendimage->s.alpha == 0) if (blendimage->s.alpha == 0)
{ {
// Don't bother with blending the pixel if the alpha of the blend pixel is 0
cur->rgba = image->rgba; cur->rgba = image->rgba;
cur++; image++; blendimage++;
continue;
} }
else else
{ {
INT32 tempcolor; SETBRIGHTNESS(brightness,blendimage->s.red,blendimage->s.green,blendimage->s.blue);
INT16 tempmult, tempalpha;
tempalpha = -(abs(blendimage->s.red-127)-127)*2;
if (tempalpha > 255)
tempalpha = 255;
else if (tempalpha < 0)
tempalpha = 0;
tempmult = (blendimage->s.red-127)*2;
if (tempmult > 255)
tempmult = 255;
else if (tempmult < 0)
tempmult = 0;
tempcolor = (image->s.red*(255-blendimage->s.alpha))/255 + ((tempmult + ((tempalpha*blendcolor.s.red)/255)) * blendimage->s.alpha)/255;
cur->s.red = (UINT8)tempcolor;
tempcolor = (image->s.green*(255-blendimage->s.alpha))/255 + ((tempmult + ((tempalpha*blendcolor.s.green)/255)) * blendimage->s.alpha)/255;
cur->s.green = (UINT8)tempcolor;
tempcolor = (image->s.blue*(255-blendimage->s.alpha))/255 + ((tempmult + ((tempalpha*blendcolor.s.blue)/255)) * blendimage->s.alpha)/255;
cur->s.blue = (UINT8)tempcolor;
cur->s.alpha = image->s.alpha;
} }
cur++; image++; blendimage++;
} }
// Calculate a sort of "gradient" for the skincolor
// (Me splitting this into a function didn't work, so I had to ruin this entire function's groove...)
{
RGBA_t nextcolor;
UINT8 firsti, secondi, mul;
UINT32 r, g, b;
firsti = ((UINT8)(255-brightness) / 16);
mul = ((UINT8)(255-brightness) % 16);
blendcolor = V_GetColor(colortranslations[color][firsti]);
if (mul > 0) // If it's 0, then we only need the first color.
{
secondi = firsti+1;
if (secondi == 16) // blend to black
nextcolor = V_GetColor(31);
else
nextcolor = V_GetColor(colortranslations[color][secondi]);
// Find difference between points
r = (UINT32)(nextcolor.s.red - blendcolor.s.red);
g = (UINT32)(nextcolor.s.green - blendcolor.s.green);
b = (UINT32)(nextcolor.s.blue - blendcolor.s.blue);
// Find the gradient of the two points
r = ((mul * r) / 16);
g = ((mul * g) / 16);
b = ((mul * b) / 16);
// Add gradient value to color
blendcolor.s.red += r;
blendcolor.s.green += g;
blendcolor.s.blue += b;
}
}
if (skinnum == TC_RAINBOW)
{
// Directly set blendcolor
cur->s.red = blendcolor.s.red;
cur->s.green = blendcolor.s.green;
cur->s.blue = blendcolor.s.blue;
cur->s.alpha = image->s.alpha;
}
else
{
// Color strength depends on image alpha
INT32 tempcolor;
INT16 tempmult, tempalpha;
tempalpha = -(abs(blendimage->s.red-127)-127)*2;
if (tempalpha > 255)
tempalpha = 255;
else if (tempalpha < 0)
tempalpha = 0;
tempmult = (blendimage->s.red-127)*2;
if (tempmult > 255)
tempmult = 255;
else if (tempmult < 0)
tempmult = 0;
tempcolor = (image->s.red*(255-blendimage->s.alpha))/255 + ((tempmult + ((tempalpha*blendcolor.s.red)/255)) * blendimage->s.alpha)/255;
cur->s.red = (UINT8)tempcolor;
tempcolor = (image->s.green*(255-blendimage->s.alpha))/255 + ((tempmult + ((tempalpha*blendcolor.s.green)/255)) * blendimage->s.alpha)/255;
cur->s.green = (UINT8)tempcolor;
tempcolor = (image->s.blue*(255-blendimage->s.alpha))/255 + ((tempmult + ((tempalpha*blendcolor.s.blue)/255)) * blendimage->s.alpha)/255;
cur->s.blue = (UINT8)tempcolor;
cur->s.alpha = image->s.alpha;
}
cur++; image++; blendimage++;
} }
return; return;

2
src/k_kart.c
View file

@ -410,7 +410,7 @@ UINT8 colortranslations[MAXTRANSLATIONS][16] = {
// 0.0722 to blue // 0.0722 to blue
// (See this same define in hw_md2.c!) // (See this same define in hw_md2.c!)
#define SETBRIGHTNESS(brightness,r,g,b) \ #define SETBRIGHTNESS(brightness,r,g,b) \
brightness = (UINT8)(((1063*((UINT16)r)/5000) + (3576*((UINT16)g)/5000) + (361*((UINT16)b)/5000)) / 3) brightness = (UINT8)(((1063*(UINT16)(r))/5000) + ((3576*(UINT16)(g))/5000) + ((361*(UINT16)(b))/5000))
/** \brief Generates the rainbow colourmaps that are used when a player has the invincibility power /** \brief Generates the rainbow colourmaps that are used when a player has the invincibility power