%global git_date  20240701
%global git_hash  43faf6fa8

%global git_ver  3.6.5
%global rel  4
%global src_name  osg-%{git_date}-%{git_hash}.tar.xz

Name:     OpenSceneGraph-OMW
Version:  %{git_ver}^%{git_date}g%{git_hash}
Release:  %{rel}%{?dist}
Summary:  "OSG on steroids" - OpenSceneGraph fork for OpenMW
License:  OSGPL
URL:      https://github.com/OpenMW/osg
Source:	%{url}/%{src_name}


BuildRequires:  make cmake gcc-c++
BuildRequires:  pkgconfig(opengl)
BuildRequires:  libpng-devel libjpeg-devel
#BuildRequires:  openCOLLADA-devel openCOLLADA
BuildRequires:  pkgconfig(collada-dom)
BuildRequires:  freetype-devel


Requires: %{name}-libs%{?_isa} = %{version}-%{release}

%description
This fork was created to experiment with performance enhancements for OpenMW that are too controversial to be included in the general purpose OSG project - either for design reasons or backward compatibility reasons.

OpenMW still works with "vanilla" OpenSceneGraph, but it is recommended to use the fork for better performance (around 10-15% on most devices). Note that the improvements are very specific to OpenMW and its animation code in particular; other OpenSceneGraph applications are not likely to see the same speed-up, or any speed-up at all if they are already GPU limited.

The fork is currently based on the OpenSceneGraph-3.6 branch and will continue to be based on the latest stable branch of OSG at the time.

    Use single precision matrices & planes by default.
    Added option for single precision osg::Quat's (enabled by default). Similar change rejected on osg-submissions.
    Nodes with invalid bounding sphere (which you get e.g. when creating a completely empty node) are interpreted as "always culled". This type of node is common in a bone hierarchy for skeletal animation, and culling them early helps performance. Rejected on osg-submissions.
    Removed several dynamic_casts.
    (Occasionally:) Uncontroversial bug fixes that were proposed upstream but have not been merged yet.

%package libs
Summary: Library for %{name}.
%description libs
%summary

%package devel
Requires: %{name}-libs%{?_isa} = %{version}-%{release}
Summary: Devel for %{name}.
%description devel
%summary


%package -n OpenThreads-OMW
Summary:        OpenThreads
License:        wxWidgets

%description -n OpenThreads-OMW
OpenThreads is intended to provide a minimal & complete Object-Oriented (OO)
thread interface for C++ programmers.  It is loosely modeled on the Java
thread API, and the POSIX Threads standards.  The architecture of the
library is designed around "swappable" thread models which are defined at
compile-time in a shared object library.

%package -n OpenThreads-OMW-devel
Summary:        Devel files for OpenThreads
License:        wxWidgets
Requires:       OpenThreads-OMW%{?_isa} = %{version}-%{release}

%description -n OpenThreads-OMW-devel
Development files for OpenThreads.


%prep
%autosetup -n osg


%build
%cmake	-DLIB_POSTFIX=%(l=%{_lib}; echo ${l:3}) \
	-DBUILD_OSG_PLUGINS_BY_DEFAULT=0 \
	-DBUILD_OSG_PLUGIN_OSG=1 \
	-DBUILD_OSG_PLUGIN_DAE=1 \
	-DBUILD_OSG_PLUGIN_DDS=1 \
	-DBUILD_OSG_PLUGIN_TGA=1 \
	-DBUILD_OSG_PLUGIN_BMP=1 \
	-DBUILD_OSG_PLUGIN_JPEG=1 \
	-DBUILD_OSG_PLUGIN_PNG=1 \
	-DBUILD_OSG_PLUGIN_FREETYPE=1 \
	-DBUILD_OSG_DEPRECATED_SERIALIZERS=0

%cmake_build


%install
%cmake_install


%files
%doc README.md
%license LICENSE.txt
%{_bindir}/*

%files libs
%{_libdir}/libosg*.so.*
%{_libdir}/osgPlugins-%{git_ver}/osg*.so


%files devel
%{_includedir}/*
%{_libdir}/*.so
%{_libdir}/pkgconfig/*.pc

%files -n OpenThreads-OMW
%doc AUTHORS.txt NEWS.txt README.md
%license LICENSE.txt
%{_libdir}/libOpenThreads.so.*

%files -n OpenThreads-OMW-devel
##%%doc %{_vpath_builddir}/doc/OpenThreadsReferenceDocs
%{_libdir}/pkgconfig/openthreads.pc
%{_libdir}/libOpenThreads.so
%{_includedir}/OpenThreads


%changelog
%autochangelog