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apophysis only uses the bottom 255 elements of the palette (instead of all 256). In many cases this does not have a noticable effect on images, but in others, the color difference is very striking. the env var 'apo_palette' may be set to 1 in order to render the image in flam3 as it would appear in apophysis.

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git-svn-id: https://flam3.googlecode.com/svn/trunk@152 77852712-ef1d-11de-8684-7d64432d61a3
This commit is contained in:
Erik Reckase 2011-01-02 23:45:52 +00:00 committed by Scott Draves
parent 0053026871
commit 6be5e2e3f2
4 changed files with 20 additions and 13 deletions
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3
src/README.txt
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@ -106,14 +106,13 @@ insert_palette unset insert the palette into the image.
enable_jpeg_comments 1 enables comments in the jpeg header (render and animate)
enable_png_comments 1 enables comments in the png header (render and animate)
New in 2.8:
earlyclip 0 enables the early clipping of rgb values for better antialiasing and resizing
defaults to 0 for backwards compatibility
flam27 0 flam3 2.7 compatibility mode; ensures generated genomes can be used by flam3 2.7.18
stagger 0 affects simultaneity of xform interpolation during genome interpolation.
represents how 'separate' the xforms are interpolated. set to 1 for each
xform to be interpolated individually, fractions control interp overlap.
apo_palette 0 set this to 1 to use only the first 255 elements of the palette (apophysis compatibility)
for example:

2
src/docstring.c
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@ -103,13 +103,13 @@ static char *the_docstring1 =
"enable_jpeg_comments 1 enables comments in the jpeg header (render and animate)\n"
"enable_png_comments 1 enables comments in the png header (render and animate)\n"
"\n"
"New in 2.8:\n"
"earlyclip 0 enables the early clipping of rgb values for better antialiasing and resizing\n"
" defaults to 0 for backwards compatibility\n"
"flam27 0 flam3 2.7 compatibility mode; ensures generated genomes can be used by flam3 2.7.18\n"
"stagger 0 affects simultaneity of xform interpolation during genome interpolation.\n"
" represents how 'separate' the xforms are interpolated. set to 1 for each\n"
" xform to be interpolated individually, fractions control interp overlap.\n"
"apo_palette 0 set this to 1 to use only the first 255 elements of the palette (apophysis compatibility)\n"
"\n"
"for example:\n"

2
src/private.h
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@ -87,7 +87,7 @@ typedef struct {
double badvals; /* accumulates all badvalue resets */
double batch_size;
int temporal_sample_num,ntemporal_samples;
int batch_num, nbatches, aborted;
int batch_num, nbatches, aborted, cmap_size;
time_t *progress_timer;
time_t *progress_timer_history;
double *progress_history;

26
src/rect.c
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@ -258,6 +258,8 @@ static void iter_thread(void *fth) {
struct timespec pauset;
int SBS = ficp->spec->sub_batch_size;
int fuse;
int cmap_size = ficp->cmap_size;
int cmap_size_m1 = ficp->cmap_size-1;
double eta = 0.0;
@ -443,7 +445,7 @@ static void iter_thread(void *fth) {
//fprintf(stdout,"%.16f\n",p[2]*256.0);
while(color_index0 < CMAP_SIZE_M1) {
while(color_index0 < cmap_size_m1) {
if (ficp->dmap[color_index0+1].index > p[2])
break;
else
@ -463,15 +465,15 @@ static void iter_thread(void *fth) {
bump_no_overflow(b[0][3], logvis*ficp->dmap[color_index0].color[3]);
bump_no_overflow(b[0][4], logvis*255.0);
#else
dbl_index0 = p[2] * CMAP_SIZE;
dbl_index0 = p[2] * cmap_size;
color_index0 = (int) (dbl_index0);
if (flam3_palette_mode_linear == fthp->cp.palette_mode) {
if (color_index0 < 0) {
color_index0 = 0;
dbl_frac = 0;
} else if (color_index0 >= CMAP_SIZE_M1) {
color_index0 = CMAP_SIZE_M1-1;
} else if (color_index0 >= cmap_size_m1) {
color_index0 = cmap_size_m1-1;
dbl_frac = 1.0;
} else {
/* interpolate between color_index0 and color_index0+1 */
@ -487,8 +489,8 @@ static void iter_thread(void *fth) {
if (color_index0 < 0) {
color_index0 = 0;
} else if (color_index0 >= CMAP_SIZE_M1) {
color_index0 = CMAP_SIZE_M1;
} else if (color_index0 >= cmap_size_m1) {
color_index0 = cmap_size_m1;
}
for (ci=0;ci<4;ci++)
@ -563,6 +565,8 @@ static int render_rectangle(flam3_frame *spec, void *out,
int thi;
time_t tstart,tend;
double sumfilt;
char *ai;
int cmap_size;
char *last_block;
size_t memory_rqd;
@ -580,6 +584,9 @@ static int render_rectangle(flam3_frame *spec, void *out,
stats->num_iters = 0;
/* correct for apophysis's use of 255 colors in the palette rather than all 256 */
cmap_size = 256 - argi("apo_palette",0);
memset(&cp,0, sizeof(flam3_genome));
/* interpolate and get a control point */
@ -769,10 +776,10 @@ static int render_rectangle(flam3_frame *spec, void *out,
/* compute the colormap entries. */
/* the input colormap is 256 long with entries from 0 to 1.0 */
for (j = 0; j < CMAP_SIZE; j++) {
dmap[j].index = cp.palette[(j * 256) / CMAP_SIZE].index / 256.0;
for (j = 0; j < cmap_size; j++) {
dmap[j].index = cp.palette[(j * 256) / cmap_size].index / 256.0;
for (k = 0; k < 4; k++)
dmap[j].color[k] = (cp.palette[(j * 256) / CMAP_SIZE].color[k] * WHITE_LEVEL) * color_scalar;
dmap[j].color[k] = (cp.palette[(j * 256) / cmap_size].color[k] * WHITE_LEVEL) * color_scalar;
}
/* compute camera */
@ -836,6 +843,7 @@ static int render_rectangle(flam3_frame *spec, void *out,
fic.ntemporal_samples = ntemporal_samples;
fic.batch_num = batch_num;
fic.nbatches = nbatches;
fic.cmap_size = cmap_size;
fic.dmap = (flam3_palette_entry *)dmap;
fic.color_scalar = color_scalar;