// <!
//  Created by Olivier Prat on 2018/09/18
//  Copyright 2013-2018 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
// !>

// <@if not RENDER_UTILS_SSAO_SHARED_H@>
// <@def RENDER_UTILS_SSAO_SHARED_H@>

// Hack comment to absorb the extra '//' scribe prepends

#ifndef RENDER_UTILS_SSAO_SHARED_H
#define RENDER_UTILS_SSAO_SHARED_H

#define SSAO_USE_HORIZON_BASED	1
#define SSAO_USE_QUAD_SPLIT	1
#define SSAO_BLUR_GAUSSIAN_COEFS_COUNT  16

#if SSAO_USE_QUAD_SPLIT
#define SSAO_SPLIT_COUNT  4
#else
#define SSAO_SPLIT_COUNT  1
#endif

// glsl / C++ compatible source as interface for ambient occlusion
#ifdef __cplusplus
#   define SSAO_VEC4 glm::vec4
#   define SSAO_IVEC4 glm::ivec4
#else
#   define SSAO_VEC4 vec4
#   define SSAO_IVEC4 ivec4
#endif

struct AmbientOcclusionParams {
    SSAO_VEC4 _resolutionInfo;
    SSAO_VEC4 _radiusInfo;
    SSAO_VEC4 _ditheringInfo;
    SSAO_VEC4 _sampleInfo;
    SSAO_VEC4 _blurInfo;
    float _blurFilterTaps[SSAO_BLUR_GAUSSIAN_COEFS_COUNT];
};

struct AmbientOcclusionFrameParams {
    SSAO_VEC4 _angleInfo;
    SSAO_IVEC4 _pixelOffsets;
};

#endif // RENDER_UTILS_SHADER_CONSTANTS_H

// <@if 1@>
// Trigger Scribe include
// <@endif@> <!def that !>

// <@endif@>

// Hack Comment