quicktex/quicktex/s3tc/bc4/_bindings.cpp

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/* Python-rgbcx Texture Compression Library
Copyright (C) 2021 Andrew Cassidy <drewcassidy@me.com>
Partially derived from rgbcx.h written by Richard Geldreich <richgel99@gmail.com>
and licenced under the public domain
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
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#include "../../_bindings.h"
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#include <pybind11/pybind11.h>
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#include <array>
#include <cstddef>
#include <cstdint>
#include <stdexcept>
#include <string>
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#include "../../Decoder.h"
#include "../../Encoder.h"
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#include "BC4Decoder.h"
#include "BC4Encoder.h"
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namespace py = pybind11;
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namespace quicktex::bindings {
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using namespace quicktex::s3tc;
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void InitBC4(py::module_ &s3tc) {
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auto bc4 = s3tc.def_submodule("_bc4", "internal bc4 module");
py::options options;
options.disable_function_signatures();
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// region BC4Block
auto bc4_block = BindBlock<BC4Block>(bc4, "BC4Block");
bc4_block.doc() = "A single BC4 block.";
bc4_block.def(py::init<>());
bc4_block.def(py::init<uint8_t, uint8_t, BC1Block::SelectorArray>(), "endpoint0"_a, "endpoint1"_a, "selectors"_a, R"doc(
__init__(self, endpoint0: int, endpoint1: int, selectors: List[List[int]]) -> None
Create a new BC4Block with the specified endpoints and selectors.
:param int endpoint0: The first endpoint.
:param int endpoint1: The second endpoint.
:param selectors: the selectors as a 4x4 list of integers, between 0 and 7 inclusive.
)doc");
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bc4_block.def_property("endpoints", &BC4Block::GetAlphas, &BC4Block::SetAlphas, "The block's endpoint values as a 2-tuple.");
bc4_block.def_property("selectors", &BC4Block::GetSelectors, &BC4Block::SetSelectors, R"doc(
The block's selectors as a 4x4 list of integers between 0 and 7 inclusive.
.. note::
This is a property, so directly modifying its value will not propogate back to the block.
Instead you must read, modify, then write the new list back to the property, like so::
selectors = block.selectors
selectors[0,0] = 0
block.selectors = selectors
)doc");
bc4_block.def_property_readonly("is_6value", &BC4Block::Is6Value, R"doc(
"True if the block uses 6-value interpolation, i.e. endpoint0 <= endpoint1. Readonly.
)doc");
// endregion
// region BC4Texture
auto bc4_texture = BindBlockTexture<BC4Block>(bc4, "BC4Texture");
bc4_texture.doc() = "A texture comprised of BC4 blocks.";
// endregion
// region BC4Encoder
py::class_<BC4Encoder> bc4_encoder(bc4, "BC4Encoder", R"doc(
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Encodes single-channel textures to BC4.
)doc");
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bc4_encoder.def(py::init<uint8_t>(), py::arg("channel") = 3, R"doc(
__init__(channel : int = 3) -> None
Create a new BC4 encoder with the specified channel
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:param int channel: the channel that will be read from. 0 to 3 inclusive. Default: 3 (alpha).
)doc");
bc4_encoder.def_property_readonly("channel", &BC4Encoder::GetChannel, "The channel that will be read from. 0 to 3 inclusive. Readonly.");
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// endregion
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// region BC4Decoder
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py::class_<BC4Decoder> bc4_decoder(bc4, "BC4Decoder", R"doc(
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Decodes BC4 textures to a single-channel.
)doc");
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bc4_decoder.def(py::init<uint8_t>(), py::arg("channel") = 3, R"doc(
__init__(channel : int = 3) -> None
Create a new BC4 decoder with the specified channel
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:param int channel: The channel that will be written to. 0 to 3 inclusive. Default: 3 (alpha).
)doc");
bc4_decoder.def_property_readonly("channel", &BC4Decoder::GetChannel, "The channel that will be written to. 0 to 3 inclusive. Readonly.");
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// endregion
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}
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} // namespace quicktex::bindings