Codechange: [OpenGL] Use persistently mapped pixel buffers when supported.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/video/opengl.h b/src/video/opengl.h
index a0fd2d2f3..d910ca3bf 100644
--- a/src/video/opengl.h
+++ b/src/video/opengl.h
@@ -31,6 +31,11 @@ class OpenGLBackend : public ZeroedMemoryAllocator, SpriteEncoder {
 private:
 	static OpenGLBackend *instance; ///< Singleton instance pointer.
 
+	bool persistent_mapping_supported; ///< Persistent pixel buffer mapping supported.
+	GLsync sync_vid_mapping;           ///< Sync object for the persistently mapped video buffer.
+	GLsync sync_anim_mapping;          ///< Sync object for the persistently mapped animation buffer.
+
+	void *vid_buffer;   ///< Pointer to the mapped video buffer.
 	GLuint vid_pbo;     ///< Pixel buffer object storing the memory used for the video driver to draw to.
 	GLuint vid_texture; ///< Texture handle for the video buffer texture.
 	GLuint vid_program; ///< Shader program for rendering a RGBA video buffer.
@@ -39,6 +44,7 @@ private:
 	GLuint vbo_quad;    ///< Vertex buffer with a fullscreen quad.
 	GLuint pal_texture; ///< Palette lookup texture.
 
+	void *anim_buffer;   ///< Pointer to the mapped animation buffer.
 	GLuint anim_pbo;     ///< Pixel buffer object storing the memory used for the animation buffer.
 	GLuint anim_texture; ///< Texture handle for the animation buffer texture.