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Classic: optimize background 'rainbow' drawing in use for editor/debug. 

Also, draw it at shade 18 and don't use fullbright colors.

git-svn-id: https://svn.eduke32.com/eduke32@3721 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2013-05-01 17:42:05 +00:00
parent 0193d7b0e5
commit 198a3a556c
1 changed files with 14 additions and 13 deletions
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27
polymer/eduke32/build/src/engine.c
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@ -1180,23 +1180,24 @@ void yax_drawrooms(void (*SpriteAnimFunc)(int32_t,int32_t,int32_t,int32_t),
// must have writable frame buffer, i.e. done begindrawing()
static void draw_rainbow_background(void)
{
int32_t i, j;
const int32_t dimenprod = bytesperline*ydimen;
char *const p = (char *)frameplace;
int32_t y, i;
const int32_t N = 240; // don't use fullbright colors
const int32_t numfull=bytesperline/N, numrest=bytesperline%N;
j = 0;
for (i=0; i<dimenprod; i++)
const char *const src = palookup[0] + 256*18;
char *dst = (char *)frameplace;
for (y=0; y<ydim; y++)
{
p[i] = (char)j;
j++;
if (j >= xdimen)
{
while (j < bytesperline)
i++, j++;
j = 0;
}
for (i=0; i<numfull; i++)
Bmemcpy(&dst[N*i], src, N);
if (numrest > 0)
Bmemcpy(&dst[N*i], src, numrest);
dst += bytesperline;
}
}
//
// setslope
//