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diff --git a/src/gallium/auxiliary/vl/vl_idct.h b/src/gallium/auxiliary/vl/vl_idct.h
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+/**************************************************************************
+ *
+ * Copyright 2010 Christian König
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef vl_idct_h
+#define vl_idct_h
+
+#include <pipe/p_state.h>
+
+#include <tgsi/tgsi_ureg.h>
+
+/* shader based inverse distinct cosinus transformation
+ * expect usage of vl_vertex_buffers as a todo list
+ */
+struct vl_idct
+{
+   struct pipe_context *pipe;
+
+   unsigned buffer_width;
+   unsigned buffer_height;
+   unsigned nr_of_render_targets;
+
+   void *rs_state;
+   void *blend;
+
+   void *samplers[2];
+
+   void *vs_mismatch, *fs_mismatch;
+   void *vs, *fs;
+
+   struct pipe_sampler_view *matrix;
+   struct pipe_sampler_view *transpose;
+};
+
+/* a set of buffers to work with */
+struct vl_idct_buffer
+{
+   struct vl_idct *idct;
+   
+   struct pipe_viewport_state viewport_mismatch;
+   struct pipe_viewport_state viewport;
+
+   struct pipe_framebuffer_state fb_state_mismatch;
+   struct pipe_framebuffer_state fb_state;
+
+   union
+   {
+      struct pipe_sampler_view *all[4];
+      struct pipe_sampler_view *stage[2][2];
+      struct {
+         struct pipe_sampler_view *source, *matrix;
+         struct pipe_sampler_view *intermediate, *transpose;
+      } individual;
+   } sampler_views;
+};
+
+/* upload the idct matrix, which can be shared by all idct instances of a pipe */
+struct pipe_sampler_view *
+vl_idct_upload_matrix(struct pipe_context *pipe, float scale);
+
+void
+vl_idct_stage2_vert_shader(struct vl_idct *idct, struct ureg_program *shader,
+                           unsigned first_output, struct ureg_dst tex);
+
+void
+vl_idct_stage2_frag_shader(struct vl_idct *idct, struct ureg_program *shader,
+                           unsigned first_input, struct ureg_dst fragment);
+
+/* init an idct instance */
+bool
+vl_idct_init(struct vl_idct *idct, struct pipe_context *pipe,
+             unsigned buffer_width, unsigned buffer_height,
+             unsigned nr_of_render_targets,
+             struct pipe_sampler_view *matrix,
+             struct pipe_sampler_view *transpose);
+
+/* destroy an idct instance */
+void
+vl_idct_cleanup(struct vl_idct *idct);
+
+/* init a buffer assosiated with agiven idct instance */
+bool
+vl_idct_init_buffer(struct vl_idct *idct, struct vl_idct_buffer *buffer,
+                    struct pipe_sampler_view *source,
+                    struct pipe_sampler_view *intermediate);
+
+/* cleanup a buffer of an idct instance */
+void
+vl_idct_cleanup_buffer(struct vl_idct_buffer *buffer);
+
+/* flush the buffer and start rendering, vertex buffers needs to be setup before calling this */
+void
+vl_idct_flush(struct vl_idct_buffer *buffer, unsigned num_verts);
+
+void
+vl_idct_prepare_stage2(struct vl_idct_buffer *buffer);
+
+#endif