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/*
* Copyright (c) 2022, Jelle Raaijmakers <jelle@gmta.nl>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Error.h>
#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
#include <LibGfx/Rect.h>
#include <LibGfx/Size.h>
#include <LibSoftGPU/Buffer/Typed2DBuffer.h>
namespace SoftGPU {
/*
* The frame buffer is a 2D buffer that consists of:
* - color buffer(s); (FIXME: implement multiple color buffers)
* - depth buffer;
* - stencil buffer;
* - accumulation buffer. (FIXME: implement accumulation buffer)
*/
template<typename C, typename D, typename S>
class FrameBuffer final : public RefCounted<FrameBuffer<C, D, S>> {
public:
static ErrorOr<NonnullRefPtr<FrameBuffer<C, D, S>>> try_create(Gfx::IntSize const& size)
{
Gfx::IntRect rect = { 0, 0, size.width(), size.height() };
auto color_buffer = TRY(Typed2DBuffer<C>::try_create(size));
auto depth_buffer = TRY(Typed2DBuffer<D>::try_create(size));
auto stencil_buffer = TRY(Typed2DBuffer<S>::try_create(size));
return adopt_ref(*new FrameBuffer(rect, color_buffer, depth_buffer, stencil_buffer));
}
NonnullRefPtr<Typed2DBuffer<C>> color_buffer() { return m_color_buffer; }
NonnullRefPtr<Typed2DBuffer<D>> depth_buffer() { return m_depth_buffer; }
NonnullRefPtr<Typed2DBuffer<S>> stencil_buffer() { return m_stencil_buffer; }
Gfx::IntRect rect() const { return m_rect; }
private:
FrameBuffer(Gfx::IntRect rect, NonnullRefPtr<Typed2DBuffer<C>> color_buffer, NonnullRefPtr<Typed2DBuffer<D>> depth_buffer, NonnullRefPtr<Typed2DBuffer<S>> stencil_buffer)
: m_color_buffer(color_buffer)
, m_depth_buffer(depth_buffer)
, m_stencil_buffer(stencil_buffer)
, m_rect(rect)
{
}
NonnullRefPtr<Typed2DBuffer<C>> m_color_buffer;
NonnullRefPtr<Typed2DBuffer<D>> m_depth_buffer;
NonnullRefPtr<Typed2DBuffer<S>> m_stencil_buffer;
Gfx::IntRect m_rect;
};
}
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