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/*
Copyright (C) 2025 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef DCPOMATIC_WINDOWS
#include <GL/glew.h>
#endif
#include "gl_util.h"
#include "lib/dcpomatic_assert.h"
#include <wx/version.h>
/* This will only build on an new-enough wxWidgets: see the comment in gl_util.h */
#if wxCHECK_VERSION(3,1,0)
#ifdef DCPOMATIC_OSX
#define GL_DO_NOT_WARN_IF_MULTI_GL_VERSION_HEADERS_INCLUDED
#include <OpenGL/OpenGL.h>
#include <OpenGL/gl3.h>
#endif
#ifdef DCPOMATIC_LINUX
#include <GL/glu.h>
#include <GL/glext.h>
#endif
#ifdef DCPOMATIC_WINDOWS
#include <GL/glu.h>
#include <GL/wglext.h>
#endif
using namespace dcpomatic::gl;
void
dcpomatic::gl::check_error(char const * last)
{
auto const e = glGetError();
if (e != GL_NO_ERROR) {
throw GLError(last, e);
}
}
Uniform::Uniform(int program, char const* name)
{
setup(program, name);
}
void
Uniform::setup(int program, char const* name)
{
_location = glGetUniformLocation(program, name);
check_error("glGetUniformLocation");
}
UniformVec4f::UniformVec4f(int program, char const* name)
: Uniform(program, name)
{
}
void
UniformVec4f::set(float a, float b, float c, float d)
{
DCPOMATIC_ASSERT(_location != -1);
glUniform4f(_location, a, b, c, d);
check_error("glUniform4f");
}
Uniform1i::Uniform1i(int program, char const* name)
: Uniform(program, name)
{
}
void
Uniform1i::set(int v)
{
DCPOMATIC_ASSERT(_location != -1);
glUniform1i(_location, v);
check_error("glUniform1i");
}
UniformMatrix4fv::UniformMatrix4fv(int program, char const* name)
: Uniform(program, name)
{
}
void
UniformMatrix4fv::set(float const* matrix)
{
DCPOMATIC_ASSERT(_location != -1);
glUniformMatrix4fv(_location, 1, GL_TRUE, matrix);
check_error("glUniformMatrix4fv");
}
#endif
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