IShaderProgram.h

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/* Copyright (C) 2023 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * 0 A.D. is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef INCLUDED_RENDERER_BACKEND_ISHADERPROGRAM
#define INCLUDED_RENDERER_BACKEND_ISHADERPROGRAM
 
#include "lib/file/vfs/vfs_path.h"
#include "ps/CStrIntern.h"
#include "renderer/backend/Format.h"
#include "renderer/backend/IDeviceObject.h"
 
namespace Renderer
{
 
namespace Backend
{
 
enum class VertexAttributeStream : uint32_t
{
    POSITION,
    NORMAL,
    COLOR,
    UV0,
    UV1,
    UV2,
    UV3,
    UV4,
    UV5,
    UV6,
    UV7,
};
 
enum class VertexAttributeRate : uint32_t
{
    PER_VERTEX,
    PER_INSTANCE
};
 
struct SVertexAttributeFormat
{
    VertexAttributeStream stream;
    Format format;
    uint32_t offset;
    uint32_t stride;
    VertexAttributeRate rate;
    uint32_t bindingSlot;
 
    constexpr bool operator==(const SVertexAttributeFormat& other) const noexcept
    {
        return stream == other.stream && format == other.format &&
            offset == other.offset && stride == other.stride &&
            rate == other.rate && bindingSlot == other.bindingSlot;
    }
};
 
/**
 * IVertexInputLayout stores precompiled list of vertex attributes.
 */
class IVertexInputLayout : public IDeviceObject<IVertexInputLayout>
{
};
 
/**
 * IShaderProgram is a container for multiple shaders of different types.
 */
class IShaderProgram : public IDeviceObject<IShaderProgram>
{
public:
    virtual int32_t GetBindingSlot(const CStrIntern name) const = 0;
 
    virtual std::vector<VfsPath> GetFileDependencies() const = 0;
};
 
} // namespace Backend
 
} // namespace Renderer
 
#endif // INCLUDED_RENDERER_BACKEND_ISHADERPROGRAM