libvgcode::OpenGLWrapper Class Reference

#include </home/runner/work/OrcaSlicer/OrcaSlicer/src/libvgcode/src/OpenGLUtils.hpp>

Static Public Member Functions
static bool	load_opengl (const std::string &context_version)
static void	unload_opengl ()
static bool	is_valid_context ()

Static Private Attributes
static bool	s_valid_context = false

Detailed Description

Member Function Documentation

is_valid_context()

bool libvgcode::OpenGLWrapper::is_valid_context ( )

inlinestatic

{ return s_valid_context; }

References s_valid_context.

Referenced by libvgcode::ViewerImpl::init().

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load_opengl()

bool libvgcode::OpenGLWrapper::load_opengl ( const std::string & context_version )

static

{
    s_valid_context = false;
 
    const char* version = context_version.c_str();
    for (int i = 0; OPENGL_ES_PREFIXES[i] != nullptr; ++i) {
        const size_t length = strlen(OPENGL_ES_PREFIXES[i]);
        if (strncmp(version, OPENGL_ES_PREFIXES[i], length) == 0) {
            version += length;
            break;
        }
    }
 
    GLint major = 0;
    GLint minor = 0;
#ifdef _MSC_VER
    const int res = sscanf_s(version, "%d.%d", &major, &minor);
#else
    const int res = sscanf(version, "%d.%d", &major, &minor);
#endif // _MSC_VER
    if (res != 2)
        return false;
 
#ifdef ENABLE_OPENGL_ES
    s_valid_context = major > 3 || (major == 3 && minor >= 0);
    const int glad_res = gladLoaderLoadGLES2();
#else
    s_valid_context = major > 3 || (major == 3 && minor >= 2);
    const int glad_res = gladLoaderLoadGL();
#endif // ENABLE_OPENGL_ES
 
    if (glad_res == 0)
        return false;
 
#ifdef ENABLE_OPENGL_ES
    glsafe(glGetIntegerv(GL_MAX_TEXTURE_SIZE, &s_max_texture_size));
#endif // ENABLE_OPENGL_ES
 
    return s_valid_context;
}

References GL_MAX_TEXTURE_SIZE, gladLoaderLoadGL(), gladLoaderLoadGLES2(), glGetIntegerv, glsafe, libvgcode::length(), libvgcode::OPENGL_ES_PREFIXES, and s_valid_context.

Referenced by libvgcode::ViewerImpl::init().

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unload_opengl()

void libvgcode::OpenGLWrapper::unload_opengl ( )

static

{
#ifdef ENABLE_OPENGL_ES
    gladLoaderUnloadGLES2();
#else
    gladLoaderUnloadGL();
#endif // ENABLE_OPENGL_ES
}

References gladLoaderUnloadGL(), and gladLoaderUnloadGLES2().

Referenced by libvgcode::ViewerImpl::shutdown().

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Member Data Documentation

s_valid_context

bool libvgcode::OpenGLWrapper::s_valid_context = false

staticprivate

Referenced by is_valid_context(), and load_opengl().

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The documentation for this class was generated from the following files:

• /home/runner/work/OrcaSlicer/OrcaSlicer/src/libvgcode/src/OpenGLUtils.hpp
• /home/runner/work/OrcaSlicer/OrcaSlicer/src/libvgcode/src/OpenGLUtils.cpp