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// Copyright 2022 DeepMind Technologies Limited
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <array>
#include <cstdint>
#include <optional>
#include <type_traits>
#include <Eigen/Core>
#include <mujoco/mjrender.h>
#include <mujoco/mujoco.h>
#include "errors.h"
#include "function_traits.h"
#include "functions.h"
#include "raw.h"
#include "structs.h"
#include <pybind11/eigen.h>
#include <pybind11/pybind11.h>
#include <pybind11/stl.h>
namespace mujoco::python {
namespace _impl {
template <>
class MjWrapper<raw::MjrContext> : public WrapperBase<raw::MjrContext> {
public:
MjWrapper();
MjWrapper(const MjModelWrapper& model, int fontscale);
MjWrapper(const MjWrapper&) = delete;
MjWrapper(MjWrapper&&) = default;
~MjWrapper() = default;
void Free();
#define X(var) \
py_array_or_tuple_t< \
std::remove_all_extents_t<decltype(raw::MjrContext::var)>> \
var
X(fogRGBA);
X(auxWidth);
X(auxHeight);
X(auxSamples);
X(auxFBO);
X(auxFBO_r);
X(auxColor);
X(auxColor_r);
X(mat_texid);
X(mat_texuniform);
X(mat_texrepeat);
X(textureType);
X(texture);
X(skinvertVBO);
X(skinnormalVBO);
X(skintexcoordVBO);
X(skinfaceVBO);
X(charWidth);
X(charWidthBig);
#undef X
};
using MjrContextWrapper = MjWrapper<raw::MjrContext>;
template <>
struct enable_if_mj_struct<raw::MjrContext> {
using type = void;
};
static void MjrContextCapsuleDestructor(PyObject* pyobj) {
auto* ptr =
static_cast<raw::MjrContext*>(PyCapsule_GetPointer(pyobj, nullptr));
mjr_freeContext(ptr);
delete ptr;
}
#define X(var) var(InitPyArray(ptr_->var, owner_))
#define X_SKIN(var) var(InitPyArray(std::array{ptr_->nskin}, ptr_->var, owner_))
MjrContextWrapper::MjWrapper()
: WrapperBase([]() {
raw::MjrContext *const ctx = new raw::MjrContext;
mjr_defaultContext(ctx);
return ctx;
}()),
X(fogRGBA),
X(auxWidth),
X(auxHeight),
X(auxSamples),
X(auxFBO),
X(auxFBO_r),
X(auxColor),
X(auxColor_r),
X(mat_texid),
X(mat_texuniform),
X(mat_texrepeat),
X(textureType),
X(texture),
X_SKIN(skinvertVBO),
X_SKIN(skinnormalVBO),
X_SKIN(skintexcoordVBO),
X_SKIN(skinfaceVBO),
X(charWidth),
X(charWidthBig) {}
MjrContextWrapper::MjWrapper(const MjModelWrapper& model, int fontscale)
: WrapperBase([fontscale](const raw::MjModel* m) {
raw::MjrContext *const ctx = new raw::MjrContext;
mjr_defaultContext(ctx);
InterceptMjErrors(mjr_makeContext)(m, ctx, fontscale);
return ctx;
}(model.get()), &MjrContextCapsuleDestructor),
X(fogRGBA),
X(auxWidth),
X(auxHeight),
X(auxSamples),
X(auxFBO),
X(auxFBO_r),
X(auxColor),
X(auxColor_r),
X(mat_texid),
X(mat_texuniform),
X(mat_texrepeat),
X(textureType),
X(texture),
X_SKIN(skinvertVBO),
X_SKIN(skinnormalVBO),
X_SKIN(skintexcoordVBO),
X_SKIN(skinfaceVBO),
X(charWidth),
X(charWidthBig) {}
#undef X_SKIN
#undef X
void MjrContextWrapper::Free() {
// mjr_freeContext is safe to call multiple times.
InterceptMjErrors(mjr_freeContext)(ptr_);
}
} // namespace _impl
namespace {
PYBIND11_MODULE(_render, pymodule, pybind11::mod_gil_not_used()) {
namespace py = ::pybind11;
namespace traits = python_traits;
using _impl::MjModelWrapper;
using _impl::MjrContextWrapper;
// Import the _structs module so that pybind11 knows about Python bindings
// for MjWrapper types and therefore generates prettier docstrings.
py::module::import("mujoco._structs");
py::class_<MjrContextWrapper> mjrContext(pymodule, "MjrContext");
mjrContext.def(py::init<>());
mjrContext.def(py::init<const MjModelWrapper&, int>());
mjrContext.def(
"free", [](MjrContextWrapper& self) { self.Free(); },
py::doc("Frees resources in current active OpenGL context, sets struct "
"to default."));
#define X(var) \
mjrContext.def_property( \
#var, [](const MjrContextWrapper& c) { return c.get()->var; }, \
[](MjrContextWrapper& c, mjtNum rhs) { c.get()->var = rhs; })
X(lineWidth);
X(shadowClip);
X(shadowScale);
X(fogStart);
X(fogEnd);
X(shadowSize);
X(offWidth);
X(offHeight);
X(offSamples);
X(fontScale);
X(offFBO);
X(offFBO_r);
X(offColor);
X(offColor_r);
X(offDepthStencil);
X(offDepthStencil_r);
X(shadowFBO);
X(shadowTex);
X(ntexture);
X(basePlane);
X(baseMesh);
X(baseHField);
X(baseBuiltin);
X(baseFontNormal);
X(baseFontShadow);
X(baseFontBig);
X(rangePlane);
X(rangeMesh);
X(rangeHField);
X(rangeBuiltin);
X(rangeFont);
X(nskin);
X(charHeight);
X(charHeightBig);
X(glInitialized);
X(windowAvailable);
X(windowSamples);
X(windowStereo);
X(windowDoublebuffer);
X(currentBuffer);
X(readPixelFormat);
X(readDepthMap);
#undef X
#define X(var) \
mjrContext.def_property_readonly( \
#var, [](const MjrContextWrapper& c) { return c.get()->var; })
X(nskin);
#undef X
#define X(var) DefinePyArray(mjrContext, #var, &MjrContextWrapper::var)
X(fogRGBA);
X(auxWidth);
X(auxHeight);
X(auxSamples);
X(auxFBO);
X(auxFBO_r);
X(auxColor);
X(auxColor_r);
X(mat_texid);
X(mat_texuniform);
X(mat_texrepeat);
X(textureType);
X(texture);
X(skinvertVBO);
X(skinnormalVBO);
X(skintexcoordVBO);
X(skinfaceVBO);
X(charWidth);
X(charWidthBig);
#undef X
// ==================== MJRRENDERERINFO ======================================
py::class_<raw::MjrRendererInfo> mjrRendererInfo(pymodule, "MjrRendererInfo");
mjrRendererInfo.def(py::init([]() {
raw::MjrRendererInfo info;
mjr_defaultRendererInfo(&info);
return info;
}));
mjrRendererInfo.def("__copy__", [](const raw::MjrRendererInfo& other) {
return raw::MjrRendererInfo(other);
});
mjrRendererInfo.def("__deepcopy__",
[](const raw::MjrRendererInfo& other, py::dict) {
return raw::MjrRendererInfo(other);
});
DefineStructFunctions(mjrRendererInfo);
mjrRendererInfo.def_property_readonly("renderer",
[](const raw::MjrRendererInfo& info) {
return info.renderer ? info.renderer
: "";
});
mjrRendererInfo.def_property_readonly("backend",
[](const raw::MjrRendererInfo& info) {
return info.backend ? info.backend
: "";
});
using EigenUnsignedCharVectorX = Eigen::Vector<unsigned char, Eigen::Dynamic>;
using EigenFloatVectorX = Eigen::Vector<float, Eigen::Dynamic>;
// Skipped: mjr_defaultContext (have MjrContext.__init__)
Def<traits::mjr_defaultRendererInfo>(pymodule);
Def<traits::mjr_getRendererInfo>(pymodule);
// Skipped: mjr_makeContext (have MjrContext.__init__)
Def<traits::mjr_changeFont>(pymodule);
Def<traits::mjr_addAux>(pymodule);
// Skipped: mjr_freeContext (have MjrContext.__del__)
Def<traits::mjr_resizeOffscreen>(pymodule);
Def<traits::mjr_uploadTexture>(pymodule);
Def<traits::mjr_uploadMesh>(pymodule);
Def<traits::mjr_uploadHField>(pymodule);
Def<traits::mjr_restoreBuffer>(pymodule);
Def<traits::mjr_setBuffer>(pymodule);
DefWithGil<traits::mjr_readPixels>(
pymodule, [](std::optional<py::array_t<std::uint8_t>> rgb,
std::optional<py::array_t<float>> depth,
const raw::MjrRect* viewport, const raw::MjrContext* con) {
std::uint8_t* const rgb_data =
rgb.has_value() ? rgb->mutable_data() : nullptr;
float* const depth_data =
depth.has_value() ? depth->mutable_data() : nullptr;
{
py::gil_scoped_release no_gil;
return InterceptMjErrors(::mjr_readPixels)(rgb_data, depth_data,
*viewport, con);
}
});
Def<traits::mjr_drawPixels>(
pymodule,
[](std::optional<Eigen::Ref<const EigenUnsignedCharVectorX>> rgb,
std::optional<Eigen::Ref<const EigenFloatVectorX>> depth,
const raw::MjrRect* viewport, const raw::MjrContext* con) {
return InterceptMjErrors(::mjr_drawPixels)(
rgb.has_value() ? rgb->data() : nullptr,
depth.has_value() ? depth->data() : nullptr, *viewport, con);
});
Def<traits::mjr_blitBuffer>(pymodule);
Def<traits::mjr_setAux>(pymodule);
Def<traits::mjr_blitAux>(pymodule);
Def<traits::mjr_text>(pymodule);
Def<traits::mjr_overlay>(pymodule);
Def<traits::mjr_maxViewport>(pymodule);
Def<traits::mjr_rectangle>(pymodule);
Def<traits::mjr_label>(pymodule);
Def<traits::mjr_figure>(pymodule);
Def<traits::mjr_render>(pymodule);
Def<traits::mjr_finish>(pymodule);
Def<traits::mjr_getError>(pymodule);
Def<traits::mjr_findRect>(pymodule);
} // PYBIND11_MODULE
} // namespace
} // namespace mujoco::python