nebkor/tinyrenderer
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tweak

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This commit is contained in:
Joe Ardent 2025-09-05 12:42:25 -07:00
parent ea3c4e89e0
commit d51a2dd5f4
2 changed files with 7 additions and 6 deletions
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1
.gitignore vendored
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@ -1 +1,2 @@
/target /target
*.tga

12
src/tga.rs
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@ -321,7 +321,7 @@ impl TGAImage {
let mut current_byte = current_pixel * bpp; let mut current_byte = current_pixel * bpp;
let mut run_length = 1; let mut run_length = 1;
let mut raw = true; let mut is_raw = true;
while (current_pixel + run_length) < num_pixels && run_length < max_chunk_len { while (current_pixel + run_length) < num_pixels && run_length < max_chunk_len {
let mut succ_eq = true; let mut succ_eq = true;
@ -332,26 +332,26 @@ impl TGAImage {
} }
current_byte += bpp; current_byte += bpp;
if 1 == run_length { if 1 == run_length {
raw = !succ_eq; is_raw = !succ_eq;
} }
if raw && succ_eq { if is_raw && succ_eq {
run_length -= 1; run_length -= 1;
break; break;
} }
if !(raw || succ_eq) { if !(is_raw || succ_eq) {
break; break;
} }
run_length += 1; run_length += 1;
} }
current_pixel += run_length; current_pixel += run_length;
let mut out = if raw { let mut out = if is_raw {
[run_length as u8 - 1] [run_length as u8 - 1]
} else { } else {
[run_length as u8 + 127] [run_length as u8 + 127]
}; };
file.write_all(&mut out)?; file.write_all(&mut out)?;
let chunk_end = chunk_start + if raw { run_length * bpp } else { bpp }; let chunk_end = chunk_start + if is_raw { run_length * bpp } else { bpp };
file.write_all(&mut self.data[chunk_start..chunk_end])?; file.write_all(&mut self.data[chunk_start..chunk_end])?;
} }