aov.h

//
// Copyright 2018 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HD_AOV_H
#define PXR_IMAGING_HD_AOV_H

#include "pxr/pxr.h"

#include "pxr/imaging/hd/api.h"
#include "pxr/imaging/hd/types.h"
#include "pxr/usd/sdf/path.h"
#include "pxr/base/gf/vec3i.h"
#include "pxr/base/tf/hashmap.h"
#include "pxr/base/vt/value.h"

PXR_NAMESPACE_OPEN_SCOPE

typedef TfHashMap<TfToken, VtValue, TfToken::HashFunctor> HdAovSettingsMap;

struct HdAovDescriptor
{
    HdAovDescriptor()
        : format(HdFormatInvalid), multiSampled(false)
        , clearValue(), aovSettings() {}
    HdAovDescriptor(HdFormat f, bool ms, VtValue const& c)
        : format(f), multiSampled(ms), clearValue(c), aovSettings() {}

    // ----------------------------------------------------------------
    // Render buffer parameters
    // ----------------------------------------------------------------

    HdFormat format;

    bool multiSampled;

    // ----------------------------------------------------------------
    // Renderpass binding parameters.
    // ----------------------------------------------------------------

    VtValue clearValue;

    HdAovSettingsMap aovSettings;
};
typedef std::vector<HdAovDescriptor> HdAovDescriptorList;

struct HdRenderBufferDescriptor {

    HdRenderBufferDescriptor()
        : dimensions(0), format(HdFormatInvalid), multiSampled(false) {}
    HdRenderBufferDescriptor(GfVec3i const& _d, HdFormat _f, bool _ms)
        : dimensions(_d), format(_f), multiSampled(_ms) {}

    GfVec3i dimensions;

    HdFormat format;

    bool multiSampled;

    bool operator==(HdRenderBufferDescriptor const& rhs) const {
        return dimensions == rhs.dimensions &&
               format == rhs.format && multiSampled == rhs.multiSampled;
    }
    bool operator!=(HdRenderBufferDescriptor const& rhs) const {
        return !(*this == rhs);
    }
};


class HdRenderBuffer;

struct HdRenderPassAovBinding {

    HdRenderPassAovBinding()
        : renderBuffer(nullptr) {}

    TfToken aovName;

    HdRenderBuffer* renderBuffer;

    SdfPath renderBufferId;

    VtValue clearValue;

    HdAovSettingsMap aovSettings;
};

typedef std::vector<HdRenderPassAovBinding> HdRenderPassAovBindingVector;

// VtValue requirements for HdRenderPassAovBinding
HD_API
std::ostream& operator<<(std::ostream& out,
    const HdRenderPassAovBinding& desc);
HD_API
bool operator==(const HdRenderPassAovBinding& lhs,
    const HdRenderPassAovBinding& rhs);
HD_API
bool operator!=(const HdRenderPassAovBinding& lhs,
    const HdRenderPassAovBinding& rhs);

HD_API
size_t hash_value(const HdRenderPassAovBinding &b);

HD_API
bool HdAovHasDepthSemantic(TfToken const& aovName);

HD_API
bool HdAovHasDepthStencilSemantic(TfToken const& aovName);

struct HdParsedAovToken {
    HD_API
    HdParsedAovToken();
    HD_API
    HdParsedAovToken(TfToken const& aovName);

    TfToken name;
    bool isPrimvar : 1;
    bool isLpe : 1;
    bool isShader : 1;
};
typedef std::vector<HdParsedAovToken> HdParsedAovTokenVector;

PXR_NAMESPACE_CLOSE_SCOPE

#endif // PXR_IMAGING_HD_AOV_H