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/**************************************************************************
*
* 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 *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, *layout, *quant;
struct pipe_surface *dst;
};
extern const int vl_zscan_linear[];
extern const int vl_zscan_normal[];
extern const int vl_zscan_alternate[];
struct pipe_sampler_view *
vl_zscan_layout(struct pipe_context *pipe, const int layout[64], unsigned blocks_per_line);
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_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_set_layout(struct vl_zscan_buffer *buffer, struct pipe_sampler_view *layout);
void
vl_zscan_render(struct vl_zscan_buffer *buffer, unsigned num_instances);
#endif
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