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Merge pull request #110271 from BlueCube3310/image-conv-opti-incompatible

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Image: Optimize manual format conversion
This commit is contained in:
Thaddeus Crews
2025-10-22 13:48:46 -05:00
parent 40eb34833b b63ec3d0f0
commit 37764110f6
1 changed files with 13 additions and 15 deletions
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28
core/io/image.cpp
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@@ -568,14 +568,13 @@ static bool _are_formats_compatible(Image::Format p_format0, Image::Format p_for
void Image::convert(Format p_new_format) {
ERR_FAIL_INDEX_MSG(p_new_format, FORMAT_MAX, vformat("The Image format specified (%d) is out of range. See Image's Format enum.", p_new_format));
ERR_FAIL_COND_MSG(Image::is_format_compressed(format) || Image::is_format_compressed(p_new_format),
"Cannot convert to (or from) compressed formats. Use compress() and decompress() instead.");
if (data.is_empty() || p_new_format == format) {
return;
}
ERR_FAIL_COND_MSG(Image::is_format_compressed(format) || Image::is_format_compressed(p_new_format),
"Cannot convert to (or from) compressed formats. Use compress() and decompress() instead.");
// Includes the main image.
const int mipmap_count = get_mipmap_count() + 1;
@@ -584,24 +583,23 @@ void Image::convert(Format p_new_format) {
Image new_img(width, height, mipmaps, p_new_format);
for (int mip = 0; mip < mipmap_count; mip++) {
Ref<Image> src_mip = get_image_from_mipmap(mip);
Ref<Image> new_mip = new_img.get_image_from_mipmap(mip);
int64_t src_mip_ofs, dst_mip_ofs;
int w, h;
_get_mipmap_offset_and_size(mip, src_mip_ofs, w, h);
new_img._get_mipmap_offset_and_size(mip, dst_mip_ofs, w, h);
for (int y = 0; y < src_mip->height; y++) {
for (int x = 0; x < src_mip->width; x++) {
new_mip->set_pixel(x, y, src_mip->get_pixel(x, y));
uint8_t *dst_mip_ptr = new_img.ptrw() + dst_mip_ofs;
const uint8_t *src_mip_ptr = ptr() + src_mip_ofs;
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
uint32_t mip_ofs = y * w + x;
new_img._set_color_at_ofs(dst_mip_ptr, mip_ofs, _get_color_at_ofs(src_mip_ptr, mip_ofs));
}
}
int64_t mip_offset = 0;
int64_t mip_size = 0;
new_img.get_mipmap_offset_and_size(mip, mip_offset, mip_size);
memcpy(new_img.data.ptrw() + mip_offset, new_mip->data.ptr(), mip_size);
}
_copy_internals_from(new_img);
return;
}