jj/meadow
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Proper color handling

Browse Source
This commit is contained in:
JJ Bliss
2026-04-26 17:54:32 -04:00
parent 56490a754f
commit 1a4408cadf
2 changed files with 19 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
uxn/uxn.ha
+16 -14
View File
@@ -34,6 +34,12 @@ export type uxn_screen = ([MAXWIDTH][MAXHEIGHT]u8, [MAXWIDTH][MAXHEIGHT]u8);
const reset_vector: u16 = 0x0100;
const colormodes: [4][16] u8 = [
[0, 0, 0, 0, 1, 0, 1, 1, 2, 2, 0, 2, 3, 3, 3, 0],
[0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3],
[1, 2, 3, 1, 1, 2, 3, 1, 1, 2, 3, 1, 1, 2, 3, 1],
[2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2]];
fn initialize_uxn_mem() *uxn = {
return alloc(uxn{
pc = reset_vector,
@@ -298,12 +304,8 @@ fn copy_sprite_to_screen(bpp2: bool, colors: u8, x: u16, y: u16, addr: u16, flip
else {yield get_pixels_from_1bpp_sprite(addr,state);};
for(let p .. pixels){
const color = if(!bpp2){
yield if(p == 0) { yield 0:u8;} else {yield colors: u8; };
} else {
yield p;
};
const color = colormodes[p][colors];
if((x < MAXWIDTH) && (y < MAXHEIGHT)){
if(layer1) { state.screen.1[x+xoff][y+yoff] = color; }
else {state.screen.0[x+xoff][y+yoff] = color; };
@@ -350,14 +352,14 @@ fn get_pixels_from_2bpp_sprite(addr: u16, state: *uxn) []u8 = {
for(let i = 0; i < 8; i+=1){
const data1: u8 = state.ram[addr + i: u16];
const data2: u8 = state.ram[addr + i:u16 + 8];
pixels[i*8 +0] = ((data1 & 0b10000000) >> 6) | ((data2 & 0b10000000) >> 7);
pixels[i*8 +1] = ((data1 & 0b01000000) >> 5) | ((data2 & 0b01000000) >> 6);
pixels[i*8 +2] = ((data1 & 0b00100000) >> 4) | ((data2 & 0b00100000) >> 5);
pixels[i*8 +3] = ((data1 & 0b00010000) >> 3) | ((data2 & 0b00010000) >> 4);
pixels[i*8 +4] = ((data1 & 0b00001000) >> 2) | ((data2 & 0b00001000) >> 3);
pixels[i*8 +5] = ((data1 & 0b00000100) >> 1) | ((data2 & 0b00000100) >> 2);
pixels[i*8 +6] = ((data1 & 0b00000010) >> 0) | ((data2 & 0b00000010) >> 1);
pixels[i*8 +7] = ((data1 & 0b00000001) << 1) | ((data2 & 0b00000001) >> 0);
pixels[i*8 +0] = ((data2 & 0b10000000) >> 6) | ((data1 & 0b10000000) >> 7);
pixels[i*8 +1] = ((data2 & 0b01000000) >> 5) | ((data1 & 0b01000000) >> 6);
pixels[i*8 +2] = ((data2 & 0b00100000) >> 4) | ((data1 & 0b00100000) >> 5);
pixels[i*8 +3] = ((data2 & 0b00010000) >> 3) | ((data1 & 0b00010000) >> 4);
pixels[i*8 +4] = ((data2 & 0b00001000) >> 2) | ((data1 & 0b00001000) >> 3);
pixels[i*8 +5] = ((data2 & 0b00000100) >> 1) | ((data1 & 0b00000100) >> 2);
pixels[i*8 +6] = ((data2 & 0b00000010) >> 0) | ((data1 & 0b00000010) >> 1);
pixels[i*8 +7] = ((data2 & 0b00000001) << 1) | ((data1 & 0b00000001) >> 0);
};
return pixels;
};