OpenGL module

2026-11-09 06:30:10 +01:00 · 2022-06-04 15:21:34 +02:00
parent 43b3998b9d
commit 1826e23c29
14 changed files with 468 additions and 4 deletions
@@ -0,0 +1,319 @@
+#include "fastfetch.h"
+
+#include <string.h>
+
+#define FF_OPENGL_MODULE_NAME "OpenGL"
+#define FF_OPENGL_NUM_FORMAT_ARGS 3
+
+#ifdef FF_HAVE_GL
+#include <GL/gl.h>
+
+typedef struct GLData
+{
+    FF_LIBRARY_SYMBOL(glGetString);
+} GLData;
+
+static const char* glHandlePrint(FFinstance* instance, const GLData* data)
+{
+    const char* version = (const char*) data->ffglGetString(GL_VERSION);
+    if(!ffStrSet(version))
+        return "glGetString(GL_VERSION) returned NULL";
+
+    const char* renderer = (const char*) data->ffglGetString(GL_RENDERER);
+    const char* vendor = (const char*) data->ffglGetString(GL_VENDOR);
+
+    if(instance->config.openGLFormat.length == 0)
+    {
+        ffPrintLogoAndKey(instance, FF_OPENGL_MODULE_NAME, 0, &instance->config.openGLKey);
+        puts(version);
+    }
+    else
+    {
+        ffPrintFormatString(instance, FF_OPENGL_MODULE_NAME, 0, &instance->config.openGLKey, &instance->config.openGLFormat, NULL, FF_OPENGL_NUM_FORMAT_ARGS, (FFformatarg[]) {
+            {FF_FORMAT_ARG_TYPE_STRING, version},
+            {FF_FORMAT_ARG_TYPE_STRING, renderer},
+            {FF_FORMAT_ARG_TYPE_STRING, vendor}
+        });
+    }
+
+    return NULL;
+}
+
+#ifdef FF_HAVE_EGL
+#include <EGL/egl.h>
+
+typedef struct EGLData
+{
+    GLData* glData;
+
+    FF_LIBRARY_SYMBOL(eglGetDisplay);
+    FF_LIBRARY_SYMBOL(eglInitialize);
+    FF_LIBRARY_SYMBOL(eglBindAPI);
+    FF_LIBRARY_SYMBOL(eglGetConfigs);
+    FF_LIBRARY_SYMBOL(eglCreatePbufferSurface);
+    FF_LIBRARY_SYMBOL(eglCreateContext);
+    FF_LIBRARY_SYMBOL(eglMakeCurrent);
+    FF_LIBRARY_SYMBOL(eglDestroyContext);
+    FF_LIBRARY_SYMBOL(eglDestroySurface);
+    FF_LIBRARY_SYMBOL(eglTerminate);
+
+    EGLDisplay display;
+    EGLConfig config;
+    EGLSurface surface;
+    EGLContext context;
+} EGLData;
+
+static const char* eglHandleContext(FFinstance* instance, EGLData* data)
+{
+    if(data->ffeglMakeCurrent(data->display, data->surface, data->surface, data->context) != EGL_TRUE)
+        return "eglMakeCurrent returned EGL_FALSE";
+
+    return glHandlePrint(instance, data->glData);
+}
+
+static const char* eglHandleSurface(FFinstance* instance, EGLData* data)
+{
+    data->context = data->ffeglCreateContext(data->display, data->config, EGL_NO_CONTEXT, (EGLint[]){EGL_NONE});
+    if(data->context == EGL_NO_CONTEXT)
+        return "eglCreateContext returned EGL_NO_CONTEXT";
+
+    const char* error = eglHandleContext(instance, data);
+    data->ffeglDestroyContext(data->display, data->context);
+    return error;
+}
+
+static const char* eglHandleDisplay(FFinstance* instance, EGLData* data)
+{
+    if(data->ffeglBindAPI(EGL_OPENGL_API) != EGL_TRUE)
+        return "eglBindAPI returned EGL_FALSE";
+
+    EGLint eglConfigCount;
+    data->ffeglGetConfigs(data->display, &data->config, 1, &eglConfigCount);
+    if(eglConfigCount == 0)
+        return "eglGetConfigs returned 0 configs";
+
+    data->surface = data->ffeglCreatePbufferSurface(data->display, data->config, (EGLint[]){
+        EGL_WIDTH, 1,
+        EGL_HEIGHT, 1,
+        EGL_NONE
+    });
+
+    if(data->surface == EGL_NO_SURFACE)
+        return "eglCreatePbufferSurface returned EGL_NO_SURFACE";
+
+    const char* error = eglHandleSurface(instance, data);
+    data->ffeglDestroySurface(data->display, data->surface);
+    return error;
+}
+
+static const char* eglHandleData(FFinstance* instance, EGLData* data)
+{
+    data->display = data->ffeglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if(data->display == EGL_NO_DISPLAY)
+        return "eglGetDisplay returned EGL_NO_DISPLAY";
+
+    EGLint major, minor;
+    if(data->ffeglInitialize(data->display, &major, &minor) == EGL_FALSE)
+        return "eglInitialize returned EGL_FALSE";
+
+    const char* error = eglHandleDisplay(instance, data);
+    data->ffeglTerminate(data->display);
+    return error;
+}
+
+static const char* eglPrint(FFinstance* instance, GLData* glData)
+{
+    EGLData eglData;
+    eglData.glData = glData;
+
+    FF_LIBRARY_LOAD(egl, instance->config.libEGL, "dlopen egl failed", "libEGL.so", 1);
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglGetDisplay, eglGetDisplay, "dlsym eglGetDisplay failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglInitialize, eglInitialize, "dlsym eglInitialize failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglBindAPI, eglBindAPI, "dlsym eglBindAPI failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglGetConfigs, eglGetConfigs, "dlsym eglGetConfigs failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglCreatePbufferSurface, eglCreatePbufferSurface, "dlsym eglCreatePbufferSurface failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglCreateContext, eglCreateContext, "dlsym eglCreateContext failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglMakeCurrent, eglMakeCurrent, "dlsym eglMakeCurrent failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglDestroyContext, eglDestroyContext, "dlsym eglDestroyContext failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglDestroySurface, eglDestroySurface, "dlsym eglDestroySurface failed");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(egl, eglData.ffeglTerminate, eglTerminate, "dlsym eglTerminate failed");
+
+    const char* error = eglHandleData(instance, &eglData);
+    dlclose(egl);
+    return error;
+}
+
+#endif //FF_HAVE_EGL
+
+#ifdef FF_HAVE_GLX
+#include <GL/glx.h>
+
+typedef struct GLXData
+{
+    GLData* glData;
+
+    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);
+
+    Display* display;
+    XVisualInfo* visualInfo;
+    Pixmap pixmap;
+    GLXPixmap glxPixmap;
+    GLXContext context;
+} GLXData;
+
+static const char* glxHandleContext(FFinstance* instance, GLXData* data)
+{
+    if(data->ffglXMakeCurrent(data->display, data->glxPixmap, data->context) != True)
+        return "glXMakeCurrent returned False";
+
+    return glHandlePrint(instance, data->glData);
+}
+
+static const char* glxHandleGLXPixmap(FFinstance* instance, GLXData* data)
+{
+    data->context = data->ffglXCreateContext(data->display, data->visualInfo, NULL, True);
+    if(data->context == NULL)
+        return "glXCreateContext returned NULL";
+
+    const char* error = glxHandleContext(instance, data);
+    data->ffglXDestroyContext(data->display, data->context);
+    return error;
+}
+
+static const char* glxHandlePixmap(FFinstance* instance, GLXData* data)
+{
+    data->glxPixmap = data->ffglXCreateGLXPixmap(data->display, data->visualInfo, data->pixmap);
+    if(data->glxPixmap == None)
+        return "glXCreateGLXPixmap returned None";
+
+    const char* error = glxHandleGLXPixmap(instance, data);
+    data->ffglXDestroyGLXPixmap(data->display, data->glxPixmap);
+    return error;
+}
+
+static const char* glxHandleVisualInfo(FFinstance* instance, GLXData* data)
+{
+    data->pixmap = data->ffXCreatePixmap(data->display, DefaultRootWindow(data->display), 1, 1, (unsigned int) data->visualInfo->depth);
+    if(data->pixmap == None)
+        return "XCreatePixmap returned None";
+
+    const char* error = glxHandlePixmap(instance, data);
+    data->ffXFreePixmap(data->display, data->pixmap);
+    return error;
+}
+
+static const char* glxHandleDisplay(FFinstance* instance, GLXData* data)
+{
+    data->visualInfo = data->ffglXChooseVisual(data->display, DefaultScreen(data->display), (int[]){None});
+    if(data->visualInfo == NULL)
+        return "glXChooseVisual returned NULL";
+
+    return glxHandleVisualInfo(instance, data);
+}
+
+static const char* glxHandleData(FFinstance* instance, GLXData* data)
+{
+    data->display = data->ffXOpenDisplay(NULL);
+    if(data->display == NULL)
+        return "XOpenDisplay returned NULL";
+
+    const char* error = glxHandleDisplay(instance, data);
+    data->ffXCloseDisplay(data->display);
+    return error;
+}
+
+static const char* glxPrint(FFinstance* instance, GLData* glData)
+{
+    GLXData data;
+    data.glData = glData;
+
+    FF_LIBRARY_LOAD(glx, instance->config.libGLX, "dlopen glx failed", "libGLX.so", 1);
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffXOpenDisplay, XOpenDisplay, "dlsym XOpenDisplay returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffglXChooseVisual, glXChooseVisual, "dlsym glXChooseVisual returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffXCreatePixmap, XCreatePixmap, "dlsym XCreatePixmap returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffglXCreateGLXPixmap, glXCreateGLXPixmap, "dlsym glXCreateGLXPixmap returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffglXCreateContext, glXCreateContext, "dlsym glXCreateContext returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffglXMakeCurrent, glXMakeCurrent, "dlsym glXMakeCurrent returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffglXDestroyContext, glXDestroyContext, "dlsym glXDestroyContext returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffglXDestroyGLXPixmap, glXDestroyGLXPixmap, "dlsym glXDestroyGLXPixmap returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffXFreePixmap, XFreePixmap, "dlsym XFreePixmap returned NULL");
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(glx, data.ffXCloseDisplay, XCloseDisplay, "dlsym XCloseDisplay returned NULL");
+
+    const char* error = glxHandleData(instance, &data);
+    dlclose(glx);
+    return error;
+}
+
+#endif //FF_HAVE_GLX
+
+static const char* glHandleGL(FFinstance* instance, GLData* data)
+{
+    if(instance->config.glType == FF_GL_TYPE_GLX)
+    {
+        #ifdef FF_HAVE_GL
+            return glxPrint(instance, data);
+        #else
+            return = "fastfetch was compiled without glx support";
+        #endif
+    }
+
+    if(instance->config.glType == FF_GL_TYPE_EGL)
+    {
+        #ifdef FF_HAVE_EGL
+            return eglPrint(instance, data);
+        #else
+            return "fastfetch was compiled without egl support";
+        #endif
+    }
+
+    const char* error = ""; // not NULL dummy value
+
+    #ifdef FF_HAVE_EGL
+        error = eglPrint(instance, data);
+    #endif
+
+    #ifdef FF_HAVE_GLX
+        if(error != NULL)
+            error = glxPrint(instance, data);
+    #endif
+
+    return error;
+}
+
+static const char* glPrint(FFinstance* instance)
+{
+    GLData data;
+
+    FF_LIBRARY_LOAD(gl, instance->config.libGL, "dlopen gl failed", "libGL.so", 1);
+    FF_LIBRARY_LOAD_SYMBOL_ADRESS(gl, data.ffglGetString, glGetString, "dlsym glGetString failed");
+
+    const char* error = glHandleGL(instance, &data);
+
+    dlclose(gl);
+    return error;
+}
+
+#endif //FF_HAVE_GL
+
+void ffPrintOpenGL(FFinstance* instance)
+{
+    const char* error;
+
+    #ifndef FF_HAVE_GL
+        error = "Fastfetch was built without gl support.";
+    #else
+       error = glPrint(instance);
+    #endif
+
+    if(error != NULL)
+        ffPrintError(instance, FF_OPENGL_MODULE_NAME, 0, &instance->config.openGLKey, &instance->config.openGLFormat, FF_OPENGL_NUM_FORMAT_ARGS, error);
+}