Add viewport

1 files changed, 16 insertions, 4 deletions

diff --git a/src/window/window.c b/src/window/window.c
index 9a650ae..44e0a23 100644
--- a/src/window/window.c
+++ b/src/window/window.c
@@ -32,10 +32,11 @@ static void mgl_window_on_resize(mgl_window *self, int width, int height) {
     mgl_context *context = mgl_get_context();
     self->size.x = width;
     self->size.y = height;
-    context->gl.glViewport(0, 0, self->size.x, self->size.y);
-    context->gl.glMatrixMode(GL_PROJECTION);
-    context->gl.glLoadIdentity();
-    context->gl.glOrtho(0.0, width, height, 0.0, -1.0, 1.0);
+
+    mgl_view view;
+    view.position = (mgl_vec2i){ 0, 0 };
+    view.size = self->size;
+    mgl_window_set_view(self, &view, NULL);
 }
 
 int mgl_window_create(mgl_window *self, const char *title, int width, int height) {
@@ -288,3 +289,14 @@ void mgl_window_display(mgl_window *self) {
     context->gl.glXSwapBuffers(context->connection, self->window);
 }
 
+void mgl_window_set_view(mgl_window *self, mgl_view *new_view, mgl_view *prev_view) {
+    if(prev_view)
+        *prev_view = self->view;
+
+    mgl_context *context = mgl_get_context();
+    self->view = *new_view;
+    context->gl.glViewport(new_view->position.x, self->size.y - new_view->size.y - new_view->position.y, new_view->size.x, new_view->size.y);
+    context->gl.glMatrixMode(GL_PROJECTION);
+    context->gl.glLoadIdentity();
+    context->gl.glOrtho(0.0, new_view->size.x, new_view->size.y, 0.0, 0.0, 1.0);
+}