1 files changed, 110 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/vl/vl_zscan.h b/src/gallium/auxiliary/vl/vl_zscan.h
new file mode 100644
index 00000000000..28b990ca83b
--- /dev/null
+++ b/src/gallium/auxiliary/vl/vl_zscan.h
@@ -0,0 +1,110 @@
+/**************************************************************************
+ *
+ * Copyright 2011 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_zscan_h
+#define vl_zscan_h
+
+#include <pipe/p_compiler.h>
+#include <pipe/p_state.h>
+
+/*
+ * shader based zscan and quantification
+ * expect usage of vl_vertex_buffers as a todo list
+ */
+struct vl_zscan
+{
+   struct pipe_context *pipe;
+
+   unsigned buffer_width;
+   unsigned buffer_height;
+
+   unsigned num_channels;
+
+   unsigned blocks_per_line;
+   unsigned blocks_total;
+
+   void *rs_state;
+   void *blend;
+
+   void *samplers[3];
+
+   void *vs, *fs;
+
+   struct pipe_sampler_view *scan;
+   struct pipe_sampler_view *quant;
+};
+
+struct vl_zscan_buffer
+{
+   struct vl_zscan *zscan;
+
+   struct pipe_viewport_state viewport;
+   struct pipe_framebuffer_state fb_state;
+
+   struct pipe_sampler_view *src, *scan, *quant;
+   struct pipe_surface *dst;
+};
+
+struct pipe_sampler_view *
+vl_zscan_linear(struct pipe_context *pipe, unsigned blocks_per_line);
+
+#if 0
+struct pipe_sampler_view *
+vl_zscan_normal(struct pipe_context *pipe, unsigned blocks_per_line);
+
+struct pipe_sampler_view *
+vl_zscan_alternate(struct pipe_context *pipe, unsigned blocks_per_line);
+#endif
+
+bool
+vl_zscan_init(struct vl_zscan *zscan, struct pipe_context *pipe,
+              unsigned buffer_width, unsigned buffer_height,
+              unsigned blocks_per_line, unsigned blocks_total,
+              unsigned num_channels);
+
+void
+vl_zscan_set_layout(struct vl_zscan *zscan, struct pipe_sampler_view *layout);
+
+void
+vl_zscan_cleanup(struct vl_zscan *zscan);
+
+#if 0
+void
+vl_zscan_upload_quant(struct vl_zscan *zscan, ...);
+#endif
+
+bool
+vl_zscan_init_buffer(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
+                     struct pipe_sampler_view *src, struct pipe_surface *dst);
+
+void
+vl_zscan_cleanup_buffer(struct vl_zscan_buffer *buffer);
+
+void
+vl_zscan_render(struct vl_zscan_buffer *buffer, unsigned num_instances);
+
+#endif