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enhance mipmaps

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This commit is contained in:
Mavropoulos Ioannis 2018-03-03 23:19:31 +02:00
parent cf0bc13588
commit 60b2ee1624
1 changed files with 17 additions and 49 deletions
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66
core/image.cpp
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@ -1077,61 +1077,29 @@ Error Image::generate_mipmaps() {
PoolVector<uint8_t>::Write wp = data.write();
if (next_power_of_2(width) == uint32_t(width) && next_power_of_2(height) == uint32_t(height)) {
//use fast code for powers of 2
int prev_ofs = 0;
int prev_h = height;
int prev_w = width;
int prev_ofs = 0;
int prev_h = height;
int prev_w = width;
for (int i = 1; i < mmcount; i++) {
for (int i = 1; i < mmcount; i++) {
int ofs, w, h;
_get_mipmap_offset_and_size(i, ofs, w, h);
int ofs, w, h;
_get_mipmap_offset_and_size(i, ofs, w, h);
switch (format) {
switch (format) {
case FORMAT_L8:
case FORMAT_R8: _generate_po2_mipmap<1>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_LA8:
case FORMAT_RG8: _generate_po2_mipmap<2>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_RGB8: _generate_po2_mipmap<3>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_RGBA8: _generate_po2_mipmap<4>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
default: {}
}
prev_ofs = ofs;
prev_w = w;
prev_h = h;
case FORMAT_L8:
case FORMAT_R8: _generate_po2_mipmap<1>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_LA8:
case FORMAT_RG8: _generate_po2_mipmap<2>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_RGB8: _generate_po2_mipmap<3>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_RGBA8: _generate_po2_mipmap<4>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
default: {}
}
} else {
//use slow code..
//use bilinear filtered code for non powers of 2
int prev_ofs = 0;
int prev_h = height;
int prev_w = width;
for (int i = 1; i < mmcount; i++) {
int ofs, w, h;
_get_mipmap_offset_and_size(i, ofs, w, h);
switch (format) {
case FORMAT_L8:
case FORMAT_R8: _scale_bilinear<1>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h, w, h); break;
case FORMAT_LA8:
case FORMAT_RG8: _scale_bilinear<2>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h, w, h); break;
case FORMAT_RGB8: _scale_bilinear<3>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h, w, h); break;
case FORMAT_RGBA8: _scale_bilinear<4>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h, w, h); break;
default: {}
}
prev_ofs = ofs;
prev_w = w;
prev_h = h;
}
prev_ofs = ofs;
prev_w = w;
prev_h = h;
}
mipmaps = true;