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minor update

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This commit is contained in:
Blaise Tine
2021-03-31 14:07:12 -04:00
parent 7b2f96bc6d
commit 1332fd1b67
8 changed files with 631 additions and 623 deletions
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26
driver/tests/tex_demo/utils.cpp
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@@ -63,11 +63,13 @@ int LoadTGA(const char *filename,
return -1;
}
// Because the TGA is BGR instead of RGB, we must swap RG components
for (int i = 0; i < pitch; i += stride) {
auto tmp = line[i];
line[i] = line[i + 2];
line[i + 2] = tmp;
// TGA uses BGR instead of RGB, we must swap RG components
if (stride >= 3) {
for (int i = 0; i < pitch; i += stride) {
auto tmp = line[i];
line[i] = line[i + 2];
line[i + 2] = tmp;
}
}
}
break;
@@ -116,7 +118,19 @@ int SaveTGA(const char *filename,
for (uint32_t y = 0; y < height; ++y) {
const uint8_t* pixel_row = pixel_bytes;
for (uint32_t x = 0; x < width; ++x) {
ofs.write((const char*)pixel_row, bpp);
// TGA uses BGR instead of RGB, we must swap RG components
if (bpp == 4) {
ofs.write((const char*)pixel_row + 2, 1);
ofs.write((const char*)pixel_row + 1, 1);
ofs.write((const char*)pixel_row + 0, 1);
ofs.write((const char*)pixel_row + 3, 1);
} else if (bpp == 3) {
ofs.write((const char*)pixel_row + 2, 1);
ofs.write((const char*)pixel_row + 1, 1);
ofs.write((const char*)pixel_row + 0, 1);
} else{
ofs.write((const char*)pixel_row, bpp);
}
pixel_row += bpp;
}
pixel_bytes -= pitch;