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second: more work on auto-convert

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This commit is contained in:
Vince Weaver 2023-09-30 15:08:04 -04:00
parent d129924562
commit 6924ca9658
3 changed files with 100 additions and 11 deletions
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1
demos/second/Makefile
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@ -62,7 +62,6 @@ second.o: second.s zx02_optim.s \
graphics/icekngdm.hgr.zx02 \
graphics/final3.hgr.zx02 \
graphics/mntscrl3.hgr.zx02 \
roto.s rotozoom.s \
zp.inc hardware.inc qload.inc music.inc
ca65 -o second.o second.s -l second.lst

14
demos/second/part18_3d/auto/NOTES
View File

@ -8,11 +8,9 @@ todo, compressed:
+ ???
try1: all plots, even zeros
+ 2c2 - 20c2 = 7680 bytes (4 bytes each pixel)
try2: all plots, don't write black pixels
+ 2c2 - 147b = 4537 bytes
try3: only do color if it changes
+ 2c2 - 1137 = 3701 bytes
7680 bytes: try1: all plots, even zeros (4 bytes each pixel)
4537 bytes: try2: all plots, don't write black pixels
3701 bytes: try3: only do color if it changes
2568 bytes: try4: use compact form (only change type if changed)
1194 bytes: try5: use hlin (essentially RLE)
906 bytes: try6: sort by color first

96
demos/second/part18_3d/auto/box_convert.c
View File

@ -60,7 +60,7 @@ static struct {
} primitive_list[4096];
static int framebuffer[40][48];
static int background_color=0;
int create_using_plots(void) {
@ -82,6 +82,81 @@ int create_using_plots(void) {
return current_primitive;
}
int create_using_hlins(void) {
int current_primitive=0;
int row,col,start_x;
int current_color,prev_color;
int len;
/* Initial Implementation, All Plots */
for(row=0;row<48;row++) {
prev_color=framebuffer[0][row]; len=0; start_x=0;
for(col=0;col<40;col++) {
if (framebuffer[col][row]!=prev_color) {
primitive_list[current_primitive].color=
prev_color;
primitive_list[current_primitive].x1=start_x;
primitive_list[current_primitive].x2=start_x+len;
primitive_list[current_primitive].y1=row;
primitive_list[current_primitive].type=ACTION_HLIN;
current_primitive++;
len=0;
prev_color=framebuffer[col][row];
start_x=col;
}
else {
len++;
}
}
}
return current_primitive;
}
int create_using_hlins_by_color(void) {
int current_primitive=0;
int row,col,start_x;
int current_color,prev_color;
int len;
/* Initial Implementation, All Plots */
for(current_color=0;current_color<16;current_color++) {
if (current_color==background_color) continue;
for(row=0;row<48;row++) {
prev_color=framebuffer[0][row]; len=0; start_x=0;
for(col=0;col<40;col++) {
if (framebuffer[col][row]!=prev_color) {
if (prev_color==current_color) {
primitive_list[current_primitive].color=
prev_color;
primitive_list[current_primitive].x1=start_x;
primitive_list[current_primitive].x2=start_x+len;
primitive_list[current_primitive].y1=row;
primitive_list[current_primitive].type=ACTION_HLIN;
current_primitive++;
}
len=0;
prev_color=framebuffer[col][row];
start_x=col;
}
else {
len++;
}
}
}
}
return current_primitive;
}
int main(int argc, char **argv) {
int row=0;
@ -151,7 +226,8 @@ int main(int argc, char **argv) {
printf("; $%02X %s: %d\n",i,color_names[i],color_count[i]);
}
create_using_plots();
// max_primitive=create_using_hlins();
max_primitive=create_using_hlins_by_color();
/* Dump results */
for(i=0;i<max_primitive;i++) {
@ -172,6 +248,22 @@ int main(int argc, char **argv) {
case ACTION_BOX:
break;
case ACTION_HLIN:
if (primitive_list[i].type==previous_primitive) {
printf("\t.byte %d,%d,%d\n",
primitive_list[i].x1,
primitive_list[i].x2,
primitive_list[i].y1);
total_size+=3;
}
else {
printf("\t.byte HLIN,%d,%d,%d\n",
primitive_list[i].x1,
primitive_list[i].x2,
primitive_list[i].y1);
total_size+=4;
previous_primitive=ACTION_HLIN;
}
break;
case ACTION_VLIN:
break;