125 lines
4.5 KiB
C++
125 lines
4.5 KiB
C++
// IAEngine: 2D Game Engine by IA
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// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include <RenderCore/Buffer.hpp>
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namespace ia::iae
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{
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RDC_Buffer::RDC_Buffer() : m_type(EType::NONE), m_size(0)
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{
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}
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RDC_Buffer::RDC_Buffer(IN EType type, IN UINT32 size) : m_type(type), m_size(size)
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{
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}
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RDC_StagingBuffer::RDC_StagingBuffer(IN UINT32 size) : RDC_Buffer(EType::NONE, size)
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{
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SDL_GPUTransferBufferCreateInfo stagingBufferCreateInfo{.usage = SDL_GPU_TRANSFERBUFFERUSAGE_UPLOAD,
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.size = size};
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m_buffer = SDL_CreateGPUTransferBuffer(RDC_Device::GetHandle(), &stagingBufferCreateInfo);
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}
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RDC_StagingBuffer::~RDC_StagingBuffer()
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{
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SDL_ReleaseGPUTransferBuffer(RDC_Device::GetHandle(), m_buffer);
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}
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VOID RDC_StagingBuffer::CopyFrom(IN PCVOID data, IN UINT32 size)
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{
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IA_ASSERT(size <= m_size);
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const auto mappedPtr = SDL_MapGPUTransferBuffer(RDC_Device::GetHandle(), m_buffer, false);
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SDL_memcpy(mappedPtr, data, size);
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SDL_UnmapGPUTransferBuffer(RDC_Device::GetHandle(), m_buffer);
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}
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RDC_DeviceLocalBuffer::RDC_DeviceLocalBuffer()
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{
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}
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RDC_DeviceLocalBuffer::RDC_DeviceLocalBuffer(IN RDC_Buffer::EType type, IN UINT32 size) : RDC_Buffer(type, size)
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{
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SDL_GPUBufferCreateInfo createInfo{.size = size};
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switch (type)
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{
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case RDC_Buffer::EType::NONE:
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THROW_INVALID_DATA();
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break;
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case RDC_Buffer::EType::VERTEX:
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createInfo.usage = SDL_GPU_BUFFERUSAGE_VERTEX;
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break;
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case RDC_Buffer::EType::INDEX:
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createInfo.usage = SDL_GPU_BUFFERUSAGE_INDEX;
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break;
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case RDC_Buffer::EType::STORAGE:
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createInfo.usage = SDL_GPU_BUFFERUSAGE_GRAPHICS_STORAGE_READ;
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break;
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}
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m_buffer = SDL_CreateGPUBuffer(RDC_Device::GetHandle(), &createInfo);
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}
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RDC_DeviceLocalBuffer::~RDC_DeviceLocalBuffer()
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{
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if (m_buffer)
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SDL_ReleaseGPUBuffer(RDC_Device::GetHandle(), m_buffer);
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}
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VOID RDC_DeviceLocalBuffer::CopyFrom(IN RDC_StagingBuffer *stagingBuffer, IN UINT32 size)
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{
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CopyFrom(stagingBuffer->m_buffer, size);
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}
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VOID RDC_DeviceLocalBuffer::CopyFrom(IN SDL_GPUTransferBuffer *stagingBuffer, IN UINT32 size)
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{
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const auto cmdBuffer = SDL_AcquireGPUCommandBuffer(RDC_Device::GetHandle());
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const auto copyPass = SDL_BeginGPUCopyPass(cmdBuffer);
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SDL_GPUTransferBufferLocation src{.transfer_buffer = stagingBuffer, .offset = 0};
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SDL_GPUBufferRegion dst{.buffer = m_buffer, .offset = 0, .size = size};
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SDL_UploadToGPUBuffer(copyPass, &src, &dst, false);
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SDL_EndGPUCopyPass(copyPass);
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SDL_SubmitGPUCommandBuffer(cmdBuffer);
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SDL_WaitForGPUIdle(RDC_Device::GetHandle());
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}
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RDC_HostVisibleBuffer::RDC_HostVisibleBuffer(IN RDC_Buffer::EType type, IN UINT32 size)
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: RDC_DeviceLocalBuffer(type, size)
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{
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SDL_GPUTransferBufferCreateInfo stagingBufferCreateInfo{.usage = SDL_GPU_TRANSFERBUFFERUSAGE_UPLOAD,
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.size = size};
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m_stagingBuffer = SDL_CreateGPUTransferBuffer(RDC_Device::GetHandle(), &stagingBufferCreateInfo);
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}
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RDC_HostVisibleBuffer::~RDC_HostVisibleBuffer()
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{
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SDL_ReleaseGPUTransferBuffer(RDC_Device::GetHandle(), m_stagingBuffer);
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}
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VOID RDC_HostVisibleBuffer::CopyFrom(IN PCVOID data, IN UINT32 size)
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{
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IA_ASSERT(size <= m_size);
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const auto mappedPtr = SDL_MapGPUTransferBuffer(RDC_Device::GetHandle(), m_stagingBuffer, false);
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SDL_memcpy(mappedPtr, data, size);
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SDL_UnmapGPUTransferBuffer(RDC_Device::GetHandle(), m_stagingBuffer);
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RDC_DeviceLocalBuffer::CopyFrom(m_stagingBuffer, size);
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}
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} // namespace ia::iae
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