OpenGL window surface

projects/apis/opengl/loader/opengl_instance_loader.c

@@ -1,5 +1,6 @@
 #include "opengl_loader.h"
 #include "instance/opengl_instance.h"
+#include "surface/opengl_surface.h"
 
 gnInstanceFunctions loadOpenGLInstanceFunctions() {
     return (gnInstanceFunctions){
@@ -9,6 +10,11 @@ gnInstanceFunctions loadOpenGLInstanceFunctions() {
         // ._gnQueueCanPresentToSurface = metalCanQueuePresentToSurface,
         // ._gnCreateOutputDevice = createMetalOutputDevice,
         // ._gnDestroyOutputDevice = destroyMetalOutputDevice,
+        #ifdef GN_PLATFORM_LINUX
+        #ifdef GN_WINDOW_X11
+        ._gnCreateX11WindowSurface = createGLXContext,
+        #endif
+        #endif
         // ._gnCreateMacOSWindowSurface = createMetalSurface,
         // ._gnDestroyWindowSurface = destroyMetalWindowSurface,
         // ._gnGetSurfaceDetails = getMetalSurfaceDetails

projects/apis/opengl/src/surface/opengl_surface.c

@@ -0,0 +1,28 @@
+#include "opengl_surface.h"
+
+#ifdef GN_PLATFORM_LINUX
+#ifdef GN_WINDOW_X11
+#include <X11/Xlib.h>
+gnReturnCode createGLXContext(gnWindowSurfaceHandle windowSurface, gnInstanceHandle instance, gnX11WindowSurfaceInfo createInfo) {
+    windowSurface->windowSurface = malloc(sizeof(gnPlatformWindowSurface));
+    int attribs[] = {
+        GLX_RGBA,
+        GLX_DEPTH_SIZE, 24,
+        GLX_DOUBLEBUFFER,
+        None
+    };
+
+    XVisualInfo* vi = glXChooseVisual(createInfo.display, 0, attribs);
+    windowSurface->windowSurface->context = glXCreateContext(createInfo.display, vi, NULL, GL_TRUE);
+    if (glXMakeCurrent(createInfo.display, createInfo.window, windowSurface->windowSurface->context) == GL_FALSE)
+        return GN_FAILED_TO_ATTACH_WINDOW;
+    return GN_SUCCESS;
+}
+#endif
+
+#ifdef GN_WINFDOW_WAYLAND
+gnReturnCode gnCreateWaylandWindowSurface(gnWindowSurfaceHandle windowSurface, gnInstanceHandle instance, gnWaylandWindowSurfaceInfo createInfo) {
+    return GN_FAILED_TO_ATTACH_WINDOW;
+}
+#endif
+#endif

projects/apis/opengl/src/surface/opengl_surface.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <window_surface/gryphn_surface.h>
+#include "core/src/window_surface/gryphn_surface_create_functions.h"
+
+#ifdef GN_PLATFORM_LINUX
+#ifdef GN_WINDOW_X11
+#include <GL/glx.h>
+typedef struct gnPlatformWindowSurface_t {
+    GLXContext context;
+} gnPlatformWindowSurface;
+gnReturnCode createGLXContext(gnWindowSurfaceHandle windowSurface, gnInstanceHandle instance, gnX11WindowSurfaceInfo createInfo);
+#endif
+#endif