1 files changed, 52 insertions, 0 deletions
diff --git a/src/egl.h b/src/egl.h
new file mode 100644
index 0000000..52422bc
--- /dev/null
+++ b/src/egl.h
@@ -0,0 +1,52 @@
+#ifndef GSR_EGL_H
+#define GSR_EGL_H
+
+/* OpenGL EGL library with a hidden window context (to allow using the opengl functions) */
+
+#include <X11/X.h>
+#include <X11/Xutil.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef void* EGLDisplay;
+typedef void* EGLSurface;
+typedef void* EGLContext;
+typedef void* EGLConfig;
+typedef void* EGLNativeDisplayType;
+typedef uintptr_t EGLNativeWindowType;
+
+#define EGL_BUFFER_SIZE                         0x3020
+#define EGL_RENDERABLE_TYPE                     0x3040
+#define EGL_OPENGL_ES2_BIT                      0x0004
+#define EGL_NONE                                0x3038
+#define EGL_CONTEXT_CLIENT_VERSION              0x3098
+
+#define GL_VENDOR                               0x1F00
+#define GL_RENDERER                             0x1F01
+
+typedef struct {
+    void *egl_library;
+    void *gl_library;
+    Display *dpy;
+    EGLDisplay egl_display;
+    EGLSurface egl_surface;
+    EGLContext egl_context;
+    Window window;
+
+    EGLDisplay (*eglGetDisplay)(EGLNativeDisplayType display_id);
+    unsigned int (*eglInitialize)(EGLDisplay dpy, int32_t *major, int32_t *minor);
+    unsigned int (*eglTerminate)(EGLDisplay dpy);
+    unsigned int (*eglChooseConfig)(EGLDisplay dpy, const int32_t *attrib_list, EGLConfig *configs, int32_t config_size, int32_t *num_config);
+    EGLSurface (*eglCreateWindowSurface)(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const int32_t *attrib_list);
+    EGLContext (*eglCreateContext)(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const int32_t *attrib_list);
+    unsigned int (*eglMakeCurrent)(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
+    unsigned int (*eglDestroyContext)(EGLDisplay dpy, EGLContext ctx);
+    unsigned int (*eglDestroySurface)(EGLDisplay dpy, EGLSurface surface);
+
+    const unsigned char* (*glGetString)(unsigned int name);
+} gsr_egl;
+
+bool gsr_egl_load(gsr_egl *self, Display *dpy);
+void gsr_egl_unload(gsr_egl *self);
+
+#endif /* GSR_EGL_H */