Add an asynchronous version of Texture2D::sub_image

[libs/gl.git] / source / backends / opengl / texture2d_backend.h

diff --git a/source/backends/opengl/texture2d_backend.h b/source/backends/opengl/texture2d_backend.h
index af9f482cbf039c47e6bb17190bfdf7966701032a..5de1079537daf16dd08248ca1d3712844223913d 100644 (file)
--- a/source/backends/opengl/texture2d_backend.h
+++ b/source/backends/opengl/texture2d_backend.h
@@ -11,6 +11,20 @@ class Buffer;
 class OpenGLTexture2D: public Texture
 {
 protected:
+       class AsyncTransfer: public NonCopyable
+       {
+       protected:
+               Buffer *pixel_buffer = 0;
+
+               AsyncTransfer() = default;
+               AsyncTransfer(AsyncTransfer &&);
+               AsyncTransfer &operator=(AsyncTransfer &&);
+               ~AsyncTransfer();
+
+               void *allocate();
+               void finalize();
+       };
+
        class AsyncLoader;
 
        OpenGLTexture2D();