mirror of
https://github.com/MobileGL-Dev/MobileGL
synced 2026-09-11 21:58:31 +09:00
68 lines
3.7 KiB
C++
68 lines
3.7 KiB
C++
// MobileGL - MobileGL/MG_State/GLState/BufferState/BufferState.h
|
|
// Copyright (c) 2025-2026 MobileGL-Dev
|
|
// Licensed under the GNU Lesser General Public License v3.0:
|
|
// https://www.gnu.org/licenses/gpl-3.0.txt
|
|
// https://www.gnu.org/licenses/lgpl-3.0.txt
|
|
// SPDX-License-Identifier: LGPL-3.0-only
|
|
// End of Source File Header
|
|
|
|
#pragma once
|
|
#include <Includes.h>
|
|
#include <MG_Util/Miscellany/IndexGenerator.h>
|
|
#include "BufferObject.h"
|
|
|
|
namespace MobileGL::MG_State::GLState {
|
|
constexpr const auto GlobalBufferTargets =
|
|
ToArray(BufferTarget::Vertex, BufferTarget::Uniform, BufferTarget::CopyRead, BufferTarget::CopyWrite,
|
|
BufferTarget::PixelPack, BufferTarget::PixelUnpack, BufferTarget::Query, BufferTarget::Texture,
|
|
BufferTarget::TransformFeedback, BufferTarget::AtomicCounter, BufferTarget::DispatchIndirect,
|
|
BufferTarget::DrawIndirect, BufferTarget::Parameter, BufferTarget::ShaderStorage);
|
|
constexpr const auto BufferBindPointTargets = ToArray(BufferTarget::Uniform, BufferTarget::TransformFeedback,
|
|
BufferTarget::AtomicCounter, BufferTarget::ShaderStorage);
|
|
constexpr SizeT BufferBindingPointCount = 36;
|
|
|
|
class BufferState {
|
|
public:
|
|
BufferState();
|
|
|
|
const SharedPtr<BufferObject>& GetBufferObject(Uint index);
|
|
void GenerateNames(Uint number, Vector<Uint>& buffers);
|
|
const SharedPtr<BufferObject>& CreateBufferObject(Uint index);
|
|
BindingSlot<BufferObject>& GetBindingSlot(BufferTarget target);
|
|
// For glBindBufferBase / glBindBufferRange
|
|
BindingSlotRange1D<BufferObject>& GetBindingPoint(BufferTarget target, Uint index);
|
|
constexpr SizeT GetBindingPointCount(const BufferTarget target) const {
|
|
auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
|
|
auto index = std::distance(BufferBindPointTargets.begin(), it);
|
|
return m_bufferBindPointTargets[index].size();
|
|
}
|
|
// High-water mark of app-touched binding points per target (highest index + 1, 0 if none).
|
|
// Lets the backend skip syncing the never-touched tail of the fixed 36-point array each draw.
|
|
void TouchBindPoint(const BufferTarget target, Uint index) {
|
|
auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
|
|
if (it == BufferBindPointTargets.end()) return;
|
|
auto slot = std::distance(BufferBindPointTargets.begin(), it);
|
|
if (static_cast<SizeT>(index) + 1 > m_touchedBindPointCount[slot])
|
|
m_touchedBindPointCount[slot] = static_cast<SizeT>(index) + 1;
|
|
}
|
|
SizeT GetTouchedBindPointCount(const BufferTarget target) const {
|
|
auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
|
|
if (it == BufferBindPointTargets.end()) return 0;
|
|
return m_touchedBindPointCount[std::distance(BufferBindPointTargets.begin(), it)];
|
|
}
|
|
void MarkBufferObjectForDeletion(Uint index);
|
|
Bool ValidateName(Uint index) const;
|
|
Bool ValidateBufferObject(Uint index) const;
|
|
|
|
private:
|
|
UnorderedMap<Uint, SharedPtr<BufferObject>> m_bufferObjects;
|
|
IndexGenerator<Uint> m_indexGenerator;
|
|
Array<BindingSlot<BufferObject>, GlobalBufferTargets.size()> m_bindingSlots;
|
|
// TODO: query the count somewhere globally?
|
|
// For glBindBufferBase / glBindBufferRange
|
|
Array<Array<BindingSlotRange1D<BufferObject>, BufferBindingPointCount>, BufferBindPointTargets.size()>
|
|
m_bufferBindPointTargets;
|
|
Array<SizeT, BufferBindPointTargets.size()> m_touchedBindPointCount;
|
|
};
|
|
} // namespace MobileGL::MG_State::GLState
|