diff options
Diffstat (limited to 'core/image.cpp')
| -rw-r--r-- | core/image.cpp | 48 |
1 files changed, 36 insertions, 12 deletions
diff --git a/core/image.cpp b/core/image.cpp index 2ac8ffea56..1f4498af9b 100644 --- a/core/image.cpp +++ b/core/image.cpp @@ -937,7 +937,7 @@ bool Image::_can_modify(Format p_format) const { return p_format <= FORMAT_RGBE9995; } -template <int CC> +template <int CC, bool renormalize> static void _generate_po2_mipmap(const uint8_t *p_src, uint8_t *p_dst, uint32_t p_width, uint32_t p_height) { //fast power of 2 mipmap generation @@ -963,6 +963,19 @@ static void _generate_po2_mipmap(const uint8_t *p_src, uint8_t *p_dst, uint32_t dst_ptr[j] = val >> 2; } + if (renormalize) { + Vector3 n(dst_ptr[0] / 255.0, dst_ptr[1] / 255.0, dst_ptr[2] / 255.0); + n *= 2.0; + n -= Vector3(1, 1, 1); + n.normalize(); + n += Vector3(1, 1, 1); + n *= 0.5; + n *= 255; + dst_ptr[0] = CLAMP(int(n.x), 0, 255); + dst_ptr[1] = CLAMP(int(n.y), 0, 255); + dst_ptr[2] = CLAMP(int(n.z), 0, 255); + } + dst_ptr += CC; rup_ptr += CC * 2; rdown_ptr += CC * 2; @@ -1045,11 +1058,11 @@ void Image::shrink_x2() { switch (format) { case FORMAT_L8: - case FORMAT_R8: _generate_po2_mipmap<1>(r.ptr(), w.ptr(), width, height); break; - case FORMAT_LA8: _generate_po2_mipmap<2>(r.ptr(), w.ptr(), width, height); break; - case FORMAT_RG8: _generate_po2_mipmap<2>(r.ptr(), w.ptr(), width, height); break; - case FORMAT_RGB8: _generate_po2_mipmap<3>(r.ptr(), w.ptr(), width, height); break; - case FORMAT_RGBA8: _generate_po2_mipmap<4>(r.ptr(), w.ptr(), width, height); break; + case FORMAT_R8: _generate_po2_mipmap<1, false>(r.ptr(), w.ptr(), width, height); break; + case FORMAT_LA8: _generate_po2_mipmap<2, false>(r.ptr(), w.ptr(), width, height); break; + case FORMAT_RG8: _generate_po2_mipmap<2, false>(r.ptr(), w.ptr(), width, height); break; + case FORMAT_RGB8: _generate_po2_mipmap<3, false>(r.ptr(), w.ptr(), width, height); break; + case FORMAT_RGBA8: _generate_po2_mipmap<4, false>(r.ptr(), w.ptr(), width, height); break; default: {} } } @@ -1060,7 +1073,7 @@ void Image::shrink_x2() { } } -Error Image::generate_mipmaps() { +Error Image::generate_mipmaps(bool p_renormalize) { if (!_can_modify(format)) { ERR_EXPLAIN("Cannot generate mipmaps in indexed, compressed or custom image formats."); @@ -1089,11 +1102,22 @@ Error Image::generate_mipmaps() { switch (format) { case FORMAT_L8: - case FORMAT_R8: _generate_po2_mipmap<1>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break; + case FORMAT_R8: _generate_po2_mipmap<1, false>(&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; + case FORMAT_RG8: _generate_po2_mipmap<2, false>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break; + case FORMAT_RGB8: + if (p_renormalize) + _generate_po2_mipmap<3, true>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); + else + _generate_po2_mipmap<3, false>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); + + break; + case FORMAT_RGBA8: + if (p_renormalize) + _generate_po2_mipmap<4, true>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); + else + _generate_po2_mipmap<4, false>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); + break; default: {} } @@ -2217,7 +2241,7 @@ void Image::_bind_methods() { ClassDB::bind_method(D_METHOD("crop", "width", "height"), &Image::crop); ClassDB::bind_method(D_METHOD("flip_x"), &Image::flip_x); ClassDB::bind_method(D_METHOD("flip_y"), &Image::flip_y); - ClassDB::bind_method(D_METHOD("generate_mipmaps"), &Image::generate_mipmaps); + ClassDB::bind_method(D_METHOD("generate_mipmaps", "renormalize"), &Image::generate_mipmaps, DEFVAL(false)); ClassDB::bind_method(D_METHOD("clear_mipmaps"), &Image::clear_mipmaps); ClassDB::bind_method(D_METHOD("create", "width", "height", "use_mipmaps", "format"), &Image::_create_empty); |