further work on launcher

launcher/deferred_image.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include "Texture.h"
+#include "renderer.h"
+
+class deferred_image {
+public:
+	deferred_image() = default;
+	deferred_image(const std::string &p) : path(p) { }
+	deferred_image(const deferred_image&) = delete;
+	deferred_image(deferred_image&&) = default;
+	deferred_image &operator=(deferred_image&&) = default;
+	operator bool() const
+	{
+		return image != null_handle || !path.empty();
+	}
+
+	GLuint get() const
+	{
+		if (!path.empty()) {
+			image = GfxRenderer.Fetch_Texture(path, true);
+			path.clear();
+		}
+
+		if (image != null_handle) {
+			opengl_texture &tex = GfxRenderer.Texture(image);
+			tex.create();
+
+			if (tex.is_ready)
+				return tex.id;
+		}
+
+		return -1;
+	}
+
+	glm::ivec2 size() const
+	{
+		if (image != null_handle) {
+			opengl_texture &tex = GfxRenderer.Texture(image);
+			return glm::ivec2(tex.width(), tex.height());
+		}
+		return glm::ivec2();
+	}
+
+private:
+	mutable std::string path;
+	mutable texture_handle image = 0;
+};