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#include "fastfetch.h"
#include "opengl.h"
#include "common/io.h"
#include <string.h>
#if __ANDROID__ && !defined(FF_HAVE_EGL)
// On Android, installing OpenGL headers is enough (mesa-dev)
#if __has_include(<EGL/egl.h>)
#define FF_HAVE_EGL 1
#endif
#endif
#if defined(FF_HAVE_EGL) || defined(FF_HAVE_GLX)
#define FF_HAVE_GL 1
#include "common/library.h"
#include <GL/gl.h>
void ffOpenGLHandleResult(FFOpenGLResult* result, __typeof__(&glGetString) ffglGetString);
#endif // FF_HAVE_GL
#ifdef FF_HAVE_GLX
#include <GL/glx.h>
typedef struct GLXData {
FF_LIBRARY_SYMBOL(glGetString)
FF_LIBRARY_SYMBOL(glXGetProcAddress)
FF_LIBRARY_SYMBOL(glXQueryVersion)
FF_LIBRARY_SYMBOL(XOpenDisplay)
FF_LIBRARY_SYMBOL(glXChooseVisual)
FF_LIBRARY_SYMBOL(XCreatePixmap)
FF_LIBRARY_SYMBOL(glXCreateGLXPixmap)
FF_LIBRARY_SYMBOL(glXCreateContext)
FF_LIBRARY_SYMBOL(glXMakeCurrent)
FF_LIBRARY_SYMBOL(glXDestroyContext)
FF_LIBRARY_SYMBOL(glXDestroyGLXPixmap)
FF_LIBRARY_SYMBOL(XFreePixmap)
FF_LIBRARY_SYMBOL(XCloseDisplay)
FF_LIBRARY_SYMBOL(XFree)
Display* display;
XVisualInfo* visualInfo;
Pixmap pixmap;
GLXPixmap glxPixmap;
GLXContext context;
} GLXData;
static const char* glxHandleContext(FFOpenGLResult* result, GLXData* data) {
if (data->ffglXMakeCurrent(data->display, data->glxPixmap, data->context) != True) {
return "glXMakeCurrent returned False";
}
ffOpenGLHandleResult(result, data->ffglGetString);
int major, minor;
if (data->ffglXQueryVersion(data->display, &major, &minor)) {
ffStrbufSetF(&result->library, "GLX %d.%d", major, minor);
} else {
ffStrbufSetStatic(&result->library, "GLX");
}
return NULL;
}
static const char* glxHandleGLXPixmap(FFOpenGLResult* result, GLXData* data) {
data->context = data->ffglXCreateContext(data->display, data->visualInfo, NULL, True);
if (data->context == NULL) {
return "glXCreateContext returned NULL";
}
const char* error = glxHandleContext(result, data);
data->ffglXDestroyContext(data->display, data->context);
return error;
}
static const char* glxHandlePixmap(FFOpenGLResult* result, GLXData* data) {
data->glxPixmap = data->ffglXCreateGLXPixmap(data->display, data->visualInfo, data->pixmap);
if (data->glxPixmap == None) {
return "glXCreateGLXPixmap returned None";
}
const char* error = glxHandleGLXPixmap(result, data);
data->ffglXDestroyGLXPixmap(data->display, data->glxPixmap);
return error;
}
static const char* glxHandleVisualInfo(FFOpenGLResult* result, GLXData* data) {
data->pixmap = data->ffXCreatePixmap(data->display, DefaultRootWindow(data->display), FF_OPENGL_BUFFER_WIDTH, FF_OPENGL_BUFFER_HEIGHT, (unsigned int) data->visualInfo->depth);
if (data->pixmap == None) {
return "XCreatePixmap returned None";
}
const char* error = glxHandlePixmap(result, data);
data->ffXFreePixmap(data->display, data->pixmap);
return error;
}
static const char* glxHandleDisplay(FFOpenGLResult* result, GLXData* data) {
data->visualInfo = data->ffglXChooseVisual(data->display, DefaultScreen(data->display), (int[]) { None });
if (data->visualInfo == NULL) {
return "glXChooseVisual returned NULL";
}
const char* error = glxHandleVisualInfo(result, data);
data->ffXFree(data->visualInfo);
return error;
}
static const char* glxHandleData(FFOpenGLResult* result, GLXData* data) {
data->ffglGetString = (__typeof__(data->ffglGetString)) data->ffglXGetProcAddress((const GLubyte*) "glGetString");
if (data->ffglGetString == NULL) {
return "glXGetProcAddress(glGetString) returned NULL";
}
data->display = data->ffXOpenDisplay(NULL);
if (data->display == NULL) {
return "XOpenDisplay returned NULL";
}
const char* error = glxHandleDisplay(result, data);
data->ffXCloseDisplay(data->display);
return error;
}
static const char* detectByGlx(FFOpenGLResult* result) {
GLXData data;
FF_LIBRARY_LOAD_MESSAGE(glx,
#if !__OpenBSD__ && !__NetBSD__
"libGLX"
#else
"libGL"
#endif
FF_LIBRARY_EXTENSION,
1);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXGetProcAddress);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXQueryVersion);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, XOpenDisplay);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXChooseVisual);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, XCreatePixmap);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXCreateGLXPixmap);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXCreateContext);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXMakeCurrent);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXDestroyContext);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, glXDestroyGLXPixmap);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, XFreePixmap);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, XCloseDisplay);
FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(glx, data, XFree);
FF_SUPPRESS_IO();
return glxHandleData(result, &data);
}
#endif // FF_HAVE_GLX
const char* ffDetectOpenGL(FFOpenGLOptions* options, FFOpenGLResult* result) {
#if FF_HAVE_GL
if (options->library == FF_OPENGL_LIBRARY_GLX) {
#ifdef FF_HAVE_GLX
return detectByGlx(result);
#else
return "fastfetch was compiled without glx support";
#endif
}
if (options->library == FF_OPENGL_LIBRARY_EGL) {
#ifdef FF_HAVE_EGL
const char* ffOpenGLDetectByEGL(FFOpenGLResult * result);
return ffOpenGLDetectByEGL(result);
#else
return "fastfetch was compiled without egl support";
#endif
}
const char* error = ""; // not NULL dummy value
#ifdef FF_HAVE_EGL
const char* ffOpenGLDetectByEGL(FFOpenGLResult * result);
error = ffOpenGLDetectByEGL(result);
#endif
#ifdef FF_HAVE_GLX
if (error != NULL) {
error = detectByGlx(result);
}
#endif
return error;
#else
FF_UNUSED(options, result);
return "Fastfetch was built without gl support.";
#endif // FF_HAVE_GL
}
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