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8bpp pseudo color. it's horrid code. the graphics are horrid.

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I have done many terrible things and I'm so very very sorry. :(
This commit is contained in:
Derek Foreman 2003-02-14 01:49:27 +00:00
parent 238355f190
commit 1431cd1958
2 changed files with 38 additions and 15 deletions
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52
otk/pseudorendercontrol.cc
View file

@ -27,28 +27,31 @@ PseudoRenderControl::PseudoRenderControl(int screen)
int depth = info->depth();
// determine the number of colors and the bits-per-color
int bpc = 2; // XXX THIS SHOULD BE A USER OPTION
assert(bpc >= 1);
_ncolors = 1 << (bpc * 3);
_bpc = 2; // XXX THIS SHOULD BE A USER OPTION
assert(_bpc >= 1);
_ncolors = 1 << (_bpc * 3);
if (_ncolors > 1 << depth) {
fprintf(stderr,
_("PseudoRenderControl: Invalid colormap size. Resizing.\n"));
bpc = 1 << (depth/3) >> 3;
_ncolors = 1 << (bpc * 3);
_bpc = 1 << (depth/3) >> 3;
_ncolors = 1 << (_bpc * 3);
}
// build a color cube
_colors = new XColor[_ncolors];
int cpc = 1 << bpc; // colors per channel
for (int n = _ncolors - 1,
r = (1 << (bpc + 1)) -1, i = 0; i < cpc; r >>= 1, ++i)
for (int g = (1 << (bpc + 1)) -1, j = 0; j < cpc; g >>= 1, ++j)
for (int b = (1 << (bpc + 1)) -1, k = 0; k < cpc; b >>= 1, ++k, --n) {
_colors[n].red = r | r << 8;
_colors[n].green = g | g << 8;
_colors[n].blue = b | b << 8;
int tr, tg, tb;
int cpc = 1 << _bpc; // colors per channel
for (int n = 0,
r = 0; r < cpc; r++)
for (int g = 0; g < cpc; g++)
for (int b = 0; b < cpc; b++, n++) {
tr = (int)(((float)(r)/(float)(cpc-1)) * 0xFF);
tg = (int)(((float)(g)/(float)(cpc-1)) * 0xFF);
tb = (int)(((float)(b)/(float)(cpc-1)) * 0xFF);
_colors[n].red = tr | tr << 8;
_colors[n].green = tg | tg << 8;
_colors[n].blue = tb | tb << 8;
_colors[n].flags = DoRed|DoGreen|DoBlue; // used to track allocation
}
@ -87,10 +90,12 @@ PseudoRenderControl::PseudoRenderControl(int screen)
_colors[i].red = icolors[close].red;
_colors[i].green = icolors[close].green;
_colors[i].blue = icolors[close].blue;
_colors[i].pixel = icolors[close].pixel;
// try alloc this closest color, it had better succeed!
if (XAllocColor(**display, info->colormap(), &_colors[i]))
if (XAllocColor(**display, info->colormap(), &_colors[i])) {
_colors[i].flags = DoRed|DoGreen|DoBlue; // mark as alloced
}
else
assert(false); // wtf has gone wrong, its already alloced for chissake!
}
@ -111,6 +116,23 @@ PseudoRenderControl::~PseudoRenderControl()
void PseudoRenderControl::reduceDepth(Surface &sf, XImage *im) const
{
pixel32 *data = sf.pixelData();
char *p = (char *)data;
int x, y, r, g, b;
for (y = 0; y < im->height; y++) {
for (x = 0; x < im->width; x++) {
r = (data[x] >> default_red_shift) & 0xFF;
r = r >> (8-_bpc);
g = (data[x] >> default_green_shift) & 0xFF;
g = g >> (8-_bpc);
b = (data[x] >> default_blue_shift) & 0xFF;
b = b >> (8-_bpc);
p[x] = _colors[(r << (2*_bpc)) + (g << (1*_bpc)) + b].pixel;
}
data += im->width;
p += im->bytes_per_line;
}
}
}

1
otk/pseudorendercontrol.hh
View file

@ -8,6 +8,7 @@ namespace otk {
class PseudoRenderControl : public RenderControl {
private:
int _bpc; // number of bits per color
int _ncolors; // number of allocated colors, size of the XColor array
XColor *_colors; // the valid allocated colors