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-rw-r--r--src/glx.c39
-rw-r--r--src/mgl.c48
-rw-r--r--src/window.c13
3 files changed, 100 insertions, 0 deletions
diff --git a/src/glx.c b/src/glx.c
new file mode 100644
index 0000000..4a5af9d
--- /dev/null
+++ b/src/glx.c
@@ -0,0 +1,39 @@
+#include "../include/mgl/glx.h"
+#include <dlfcn.h>
+#include <stdio.h>
+#include <GL/glx.h>
+
+static void* dlsym_print_fail(void *handle, const char *name) {
+ dlerror();
+ void *sym = dlsym(handle, name);
+ char *err_str = dlerror();
+
+ if(!sym)
+ fprintf(stderr, "dlsym(handle, \"%s\") failed, error: %s\n", name, err_str ? err_str : "(null)");
+
+ return sym;
+}
+
+int mgl_glx_load(mgl_glx *self) {
+ const char *glx_path = "/usr/lib/libGLX.so.0";
+ self->handle = dlopen(glx_path, RTLD_LAZY);
+ if(!self->handle) {
+ fprintf(stderr, "dlopen(\"%s\", RTLD_LAZY) failed\n", glx_path);
+ return -1;
+ }
+
+ self->glXGetFBConfigs = (GLXFBConfig* (*)(Display*, int, int*))dlsym_print_fail(self->handle, "glXGetFBConfigs");
+ if(!self->glXGetFBConfigs) {
+ mgl_glx_unload(self);
+ return -1;
+ }
+
+ return 0;
+}
+
+void mgl_glx_unload(mgl_glx *self) {
+ if(self->handle) {
+ dlclose(self->handle);
+ self->handle = NULL;
+ }
+}
diff --git a/src/mgl.c b/src/mgl.c
new file mode 100644
index 0000000..a7221d0
--- /dev/null
+++ b/src/mgl.c
@@ -0,0 +1,48 @@
+#include "../include/mgl/mgl.h"
+#include <X11/Xlib.h>
+#include <stdio.h>
+
+static mgl_context context;
+static int init_count = 0;
+static XErrorHandler prev_xerror = NULL;
+
+static int ignore_xerror(Display *display, XErrorEvent *ee) {
+ (void)display;
+ (void)ee;
+ return 0;
+}
+
+int mgl_init(void) {
+ ++init_count;
+ if(init_count == 1) {
+ context.connection = XOpenDisplay(NULL);
+ if(!context.connection) {
+ fprintf(stderr, "XOpenDisplay(NULL) failed\n");
+ mgl_deinit();
+ return -1;
+ }
+
+ prev_xerror = XSetErrorHandler(ignore_xerror);
+ if(mgl_glx_load(&context.glx) != 0) {
+ mgl_deinit();
+ return -1;
+ }
+ }
+ return 0;
+}
+
+void mgl_deinit(void) {
+ if(init_count == 1) {
+ mgl_glx_unload(&context.glx);
+ XSetErrorHandler(prev_xerror);
+ XCloseDisplay(context.connection);
+ context.connection = NULL;
+ }
+
+ if(init_count > 0)
+ --init_count;
+}
+
+mgl_context* mgl_get_context(void) {
+ return &context;
+}
diff --git a/src/window.c b/src/window.c
new file mode 100644
index 0000000..39855da
--- /dev/null
+++ b/src/window.c
@@ -0,0 +1,13 @@
+#include "../include/mgl/window.h"
+
+void mgl_window_init(mgl_window *self) {
+
+}
+
+void mgl_window_deinit(mgl_window *self) {
+
+}
+
+void mgl_window_show(mgl_window *self) {
+
+}