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Fix pvrtc encoder 

Always resize image to square of power2
Enable mipmaps only if original texture has it enabled
Fix #28534, #28541

(cherry picked from commit 4009d26022)
This commit is contained in:
Vasiliy Makarov 2019-05-01 13:34:01 +03:00 committed by Rémi Verschelde
parent e40293942d
commit d3422f8cf7
1 changed files with 3 additions and 4 deletions
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7
modules/pvr/texture_loader_pvr.cpp
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@ -192,9 +192,9 @@ static void _compress_pvrtc4(Image *p_img) {
Ref<Image> img = p_img->duplicate();
bool make_mipmaps = false;
if (img->get_width() % 8 || img->get_height() % 8) {
if (!img->is_size_po2() || img->get_width() != img->get_height()) {
make_mipmaps = img->has_mipmaps();
img->resize(img->get_width() + (8 - (img->get_width() % 8)), img->get_height() + (8 - (img->get_height() % 8)));
img->resize_to_po2(true);
}
img->convert(Image::FORMAT_RGBA8);
if (!img->has_mipmaps() && make_mipmaps)
@ -204,7 +204,7 @@ static void _compress_pvrtc4(Image *p_img) {
Ref<Image> new_img;
new_img.instance();
new_img->create(img->get_width(), img->get_height(), true, use_alpha ? Image::FORMAT_PVRTC4A : Image::FORMAT_PVRTC4);
new_img->create(img->get_width(), img->get_height(), img->has_mipmaps(), use_alpha ? Image::FORMAT_PVRTC4A : Image::FORMAT_PVRTC4);
PoolVector<uint8_t> data = new_img->get_data();
{
@ -221,7 +221,6 @@ static void _compress_pvrtc4(Image *p_img) {
/* red and Green colors are swapped. */
new (dp) Javelin::ColorRgba<unsigned char>(r[ofs + 4 * j + 2], r[ofs + 4 * j + 1], r[ofs + 4 * j], r[ofs + 4 * j + 3]);
}
new_img->get_mipmap_offset_size_and_dimensions(i, ofs, size, w, h);
Javelin::PvrTcEncoder::EncodeRgba4Bpp(&wr[ofs], bm);
}