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[qwaq] Generate a palette and colormap
The palette is a modified version of the default VGA colormap as explained by Noah Johnson (https://github.com/canidlogic/vgapal) and the generation code is heavily influenced by his code. However, I've reversed the HSV groups so I could have the pure bright colors in the fullbright range and added a few colors in the 248-255 range (mostly greens and ambers meant to be close to the old phosphor monitors). The colormap is generated by laying the colors from the palette across the middle of the map (rows 31 and 32) then linearly interpolating from 0 to the color, and the color to 2x the color (clamped) and then converting back to a palette. Mr Fixit actually looks ok still in the software renderer (unaffected in the others) though quakeguy is a hoot in all the renderers :).
This commit is contained in:
Bill Currie
parent
b33df8b698
commit
d1d1cc4362
1 changed files with 161 additions and 8 deletions
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@ -42,6 +42,7 @@ static __attribute__ ((used)) const char rcsid[] = "$Id$";
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#include "QF/cbuf.h"
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#include "QF/draw.h"
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#include "QF/image.h"
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#include "QF/input.h"
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#include "QF/progs.h"
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#include "QF/quakefs.h"
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@ -51,6 +52,7 @@ static __attribute__ ((used)) const char rcsid[] = "$Id$";
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#include "QF/sound.h"
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#include "QF/input/event.h"
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#include "QF/math/bitop.h"
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#include "QF/plugin/console.h"
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@ -147,11 +149,166 @@ BI_shutdown (void *data)
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{
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}
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static byte default_palette[256][3];
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static byte *
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write_raw_rgb (byte *dst, byte r, byte g, byte b)
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{
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*dst++ = r;
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*dst++ = g;
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*dst++ = b;
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return dst;
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}
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static byte *
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write_rgb (byte *dst, byte r, byte g, byte b)
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{
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#define shift(x) (((x) << 2) | (((x) & 0x3f) >> 4))
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*dst++ = shift(r);
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*dst++ = shift(g);
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*dst++ = shift(b);
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return dst;
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#undef shift
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}
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static byte *
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write_grey (byte *dst, byte grey)
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{
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return write_rgb (dst, grey, grey, grey);
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}
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static byte *
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genererate_irgb (byte *dst, byte lo, byte melo, byte mehi, byte hi)
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{
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for (int i = 0; i < 16; i++) {
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byte l = i & 8 ? melo : lo;
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byte h = i & 8 ? hi : mehi;
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byte r = i & 4 ? h : l;
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byte g = i & 2 ? h : l;
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byte b = i & 1 ? h : l;
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if (i == 6) { // make dim yellow brown
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g = melo;
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}
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dst = write_rgb (dst, r, g, b);
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}
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return dst;
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}
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static byte *
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write_run (byte *dst, byte *hue, byte ch, const byte *levels)
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{
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byte rgb[3] = {
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*hue & 4 ? levels[4] : levels[0],
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*hue & 2 ? levels[4] : levels[0],
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*hue & 1 ? levels[4] : levels[0],
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};
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byte chan = 2 - BITOP_LOG2 (ch);
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int ind = *hue & ch ? 4 : 0;
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int dir = *hue & ch ? -1 : 1;
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for (int i = 0; i < 4; i++, ind += dir) {
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rgb[chan] = levels[ind];
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dst = write_rgb (dst, rgb[0], rgb[1], rgb[2]);
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}
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*hue ^= ch;
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return dst;
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}
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static byte *
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write_cycle (byte *dst, byte lo, byte melo, byte me, byte mehi, byte hi)
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{
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const byte levels[] = { lo, melo, me, mehi, hi };
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byte hue = 1;
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dst = write_run (dst, &hue, 4, levels);
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dst = write_run (dst, &hue, 1, levels);
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dst = write_run (dst, &hue, 2, levels);
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dst = write_run (dst, &hue, 4, levels);
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dst = write_run (dst, &hue, 1, levels);
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dst = write_run (dst, &hue, 2, levels);
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return dst;
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}
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static void
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generate_palette (void)
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{
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const byte grey[] = {
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0, 5, 8, 11, 14, 17, 20, 24,
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28, 32, 36, 40, 45, 50, 56, 63,
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};
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byte *dst = default_palette[0];
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dst = genererate_irgb (dst, 0, 21, 42, 63);
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for (int i = 0; i < 16; i++) {
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dst = write_grey (dst, grey[i]);
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}
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dst = write_cycle (dst, 11, 12, 13, 15, 16);
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dst = write_cycle (dst, 8, 10, 12, 14, 16);
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dst = write_cycle (dst, 0, 4, 8, 12, 16);
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dst = write_cycle (dst, 20, 22, 24, 26, 28);
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dst = write_cycle (dst, 14, 17, 21, 24, 28);
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dst = write_cycle (dst, 0, 7, 14, 21, 28);
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dst = write_cycle (dst, 45, 49, 54, 58, 63);
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dst = write_cycle (dst, 31, 39, 47, 55, 63);
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dst = write_cycle (dst, 0, 16, 31, 47, 63);
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// std is black, but want vis trans and some phosphors
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dst = write_raw_rgb (dst, 40, 40, 40);
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dst = write_raw_rgb (dst, 40, 127, 40);
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dst = write_raw_rgb (dst, 51, 255, 51);
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dst = write_raw_rgb (dst, 102, 255, 102);
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dst = write_raw_rgb (dst, 127, 102, 0);
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dst = write_raw_rgb (dst, 255, 176, 0);
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dst = write_raw_rgb (dst, 255, 204, 0);
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dst = write_raw_rgb (dst, 176, 160, 176);
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}
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static byte default_colormap[64 * 256 + 1] = { [64 * 256] = 32 };
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static void
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generate_colormap (void)
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{
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byte colors[64][256][3];
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tex_t tex = {
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.width = 256,
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.height = 64,
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.format = tex_rgb,
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.data = colors[0][0],
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};
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// baseline colors
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for (int i = 0; i < 256; i++) {
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VectorCopy (default_palette[i], colors[31][i]);
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VectorCopy (default_palette[i], colors[32][i]);
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}
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for (int i = 0; i < 64; i++) {
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// main colors
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if (i < 31 || i > 32) {
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float scale = i < 32 ? 2 - i / 31.0 : 1 - (i - 32) / 31.0;
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for (int j = 0; j < 224; j++) {
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for (int k = 0; k < 3; k++) {
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colors[i][j][k] = bound (0, scale * colors[31][j][k], 255);
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}
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}
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}
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// fullbrights
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memcpy (colors[i][224], colors[31][224], 32 * 3);
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}
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tex_t *cmap = ConvertImage (&tex, default_palette[0]);
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memcpy (default_colormap, cmap->data, sizeof (default_colormap));
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free (cmap);
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}
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void
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BI_Graphics_Init (progs_t *pr)
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{
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qwaq_thread_t *thread = PR_Resources_Find (pr, "qwaq_thread");
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byte *basepal, *colormap;
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PR_RegisterBuiltins (pr, builtins, 0);
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@ -166,15 +323,11 @@ BI_Graphics_Init (progs_t *pr)
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Mod_Init_Cvars ();
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S_Init_Cvars ();
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basepal = (byte *) QFS_LoadHunkFile (QFS_FOpenFile ("gfx/palette.lmp"));
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if (!basepal)
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Sys_Error ("Couldn't load gfx/palette.lmp");
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colormap = (byte *) QFS_LoadHunkFile (QFS_FOpenFile ("gfx/colormap.lmp"));
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if (!colormap)
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Sys_Error ("Couldn't load gfx/colormap.lmp");
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generate_palette ();
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generate_colormap ();
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W_LoadWadFile ("gfx.wad");
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VID_Init (basepal, colormap);
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VID_Init (default_palette[0], default_colormap);
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IN_Init ();
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Mod_Init ();
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R_Init ();
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