/****************************************************************************
 Copyright (c) 2020-2023 Xiamen Yaji Software Co., Ltd.

 http://www.cocos.com

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights to
 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 of the Software, and to permit persons to whom the Software is furnished to do so,
 subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
****************************************************************************/

#include "WGPUDevice.h"
#include <emscripten/val.h>
#include <numeric>
#include "../../base/threading/Semaphore.h"
#include "WGPUBuffer.h"
#include "WGPUCommandBuffer.h"
#include "WGPUDescriptorSet.h"
#include "WGPUDescriptorSetLayout.h"
#include "WGPUDevice.h"
#include "WGPUExports.h"
#include "WGPUFrameBuffer.h"
#include "WGPUObject.h"
#include "WGPUPipelineLayout.h"
#include "WGPUPipelineState.h"
#include "WGPUQueryPool.h"
#include "WGPUQueue.h"
#include "WGPURenderPass.h"
#include "WGPUSampler.h"
#include "WGPUShader.h"
#include "WGPUSwapchain.h"
#include "WGPUUtils.h"

namespace cc {

namespace gfx {

namespace {
struct BufferMapData {
    Semaphore *semaphore = nullptr;
    WGPUBuffer buffer = wgpuDefaultHandle;
    emscripten::val *retBuffer = nullptr;
    uint64_t size = 0;
    bool finished = false;
};

} // namespace

void onAdapterGot(WGPURequestAdapterStatus status, WGPUAdapter adapter, char const *message, void *userdata) {
    if (message) {
        printf("onAdapterGot: %s\n", message);
    }
    if (status == WGPURequestAdapterStatus_Success) {
        auto *device = static_cast<CCWGPUDevice *>(userdata);
        device->gpuDeviceObject()->instance.wgpuAdapter = adapter;
        device->initConfigs();
        device->initLimits();
    } else {
        printf("onAdapterGot: failed to get adapter\n");
    }
}

CCWGPUDevice *CCWGPUDevice::instance = nullptr;

CCWGPUDevice *CCWGPUDevice::getInstance() {
    // if JS
    if (!instance) {
        instance = ccnew CCWGPUDevice();
    }
    // endif
    return instance;
}

CCWGPUDevice::CCWGPUDevice() : Device() {
    _api = API::WEBGPU;
    _deviceName = "WebGPU";
    _caps.clipSpaceMinZ = 0.0F;
    _caps.screenSpaceSignY = -1.0F;
    _caps.clipSpaceSignY = 1.0F;

    // Sept 6th 2022: ems getLimits not implemented
    _caps.uboOffsetAlignment = 256;
    _caps.uboOffsetAlignment = 256;
    _caps.maxVertexUniformVectors = 256;
    _caps.maxFragmentUniformVectors = 256;

    _caps.maxComputeSharedMemorySize = 32768;
    _caps.maxComputeWorkGroupInvocations = 256;
    _caps.maxComputeWorkGroupSize = {65535, 65535, 65535};
    _caps.maxComputeWorkGroupCount = {256, 256, 64};

    instance = this;
}

CCWGPUDevice::~CCWGPUDevice() {
    doDestroy();
    instance = nullptr;
}

bool CCWGPUDevice::doInit(const DeviceInfo &info) {
    _gpuDeviceObj = ccnew CCWGPUDeviceObject;
    _gpuDeviceObj->wgpuDevice = emscripten_webgpu_get_device();
    _gpuDeviceObj->wgpuQueue = wgpuDeviceGetQueue(_gpuDeviceObj->wgpuDevice);

    _gpuDeviceObj->defaultResources.uniformBuffer = CCWGPUBuffer::defaultUniformBuffer();
    _gpuDeviceObj->defaultResources.storageBuffer = CCWGPUBuffer::defaultStorageBuffer();
    _gpuDeviceObj->defaultResources.commonTexture = CCWGPUTexture::defaultCommonTexture();
    _gpuDeviceObj->defaultResources.storageTexture = CCWGPUTexture::defaultStorageTexture();
    _gpuDeviceObj->defaultResources.filterableSampler = CCWGPUSampler::defaultFilterableSampler();
    _gpuDeviceObj->defaultResources.unfilterableSampler = CCWGPUSampler::defaultUnfilterableSampler();

    QueueInfo queueInfo = {
        .type = QueueType::GRAPHICS,
    };
    _queue = this->Device::createQueue(queueInfo);

    CommandBufferInfo cmdInfo = {
        .queue = _queue,
        .type = CommandBufferType::PRIMARY,
    };
    _cmdBuff = this->Device::createCommandBuffer(cmdInfo);
    _gpuDeviceObj->instance.wgpuInstance = wgpuCreateInstance({});

#ifdef CC_WGPU_WASM
    WGPUSurfaceDescriptorFromCanvasHTMLSelector canvDesc = {};
    canvDesc.chain.sType = WGPUSType_SurfaceDescriptorFromCanvasHTMLSelector;
    canvDesc.selector = "canvas";

    WGPUSurfaceDescriptor surfDesc = {};
    surfDesc.nextInChain = reinterpret_cast<WGPUChainedStruct *>(&canvDesc);
    _gpuDeviceObj->instance.wgpuSurface = wgpuInstanceCreateSurface(_gpuDeviceObj->instance.wgpuInstance, &surfDesc);

#elif defined(CC_WGPU_DAWN)
    _gpuDeviceObj->instance.wgpuInstance = wgpuCreateInstance({});
    WGPUSurfaceDescriptor sufaceDesc = {
        .label = "DAWNSurface",
    };
    _gpuDeviceObj->instance.wgpuSurface = wgpuInstanceCreateSurface(_gpuDeviceObj->instance.wgpuInstance, &sufaceDesc);

#endif
    WGPURequestAdapterOptions options = {
        .compatibleSurface = _gpuDeviceObj->instance.wgpuSurface,
        .powerPreference = WGPUPowerPreference_LowPower,
    };

    wgpuInstanceRequestAdapter(_gpuDeviceObj->instance.wgpuInstance, &options, onAdapterGot, this);

    // auto bufferRecycleFunc = [this](WGPUBuffer buffer) {
    //     _recycleBin[getCurrentFrameIndex()].bufferBin.collect(buffer);
    // };
    // for (size_t i = 0; i < CC_WGPU_MAX_FRAME_COUNT; ++i) {
    //     _stagingBuffers[i] = new CCWGPUStagingBuffer(_gpuDeviceObj->wgpuDevice, bufferRecycleFunc);
    // }

    initFeatures();
    return true;
}

void CCWGPUDevice::doDestroy() {
    if (_gpuDeviceObj) {
        if (_gpuDeviceObj->defaultResources.uniformBuffer) {
            delete _gpuDeviceObj->defaultResources.uniformBuffer;
        }
        if (_gpuDeviceObj->defaultResources.storageBuffer) {
            delete _gpuDeviceObj->defaultResources.storageBuffer;
        }
        if (_gpuDeviceObj->defaultResources.commonTexture) {
            delete _gpuDeviceObj->defaultResources.commonTexture;
        }
        if (_gpuDeviceObj->defaultResources.storageTexture) {
            delete _gpuDeviceObj->defaultResources.storageTexture;
        }
        if (_gpuDeviceObj->defaultResources.filterableSampler) {
            delete _gpuDeviceObj->defaultResources.filterableSampler;
        }
        if (_gpuDeviceObj->defaultResources.unfilterableSampler) {
            delete _gpuDeviceObj->defaultResources.unfilterableSampler;
        }

        for (size_t i = 0; i < CC_WGPU_MAX_FRAME_COUNT; ++i) {
            _recycleBin[i].bufferBin.purge();
            _recycleBin[i].textureBin.purge();
            _recycleBin[i].queryBin.purge();
        }

        if (_gpuDeviceObj->wgpuQueue) {
            wgpuQueueRelease(_gpuDeviceObj->wgpuQueue);
        }
        if (_gpuDeviceObj->instance.wgpuSurface) {
            wgpuSurfaceRelease(_gpuDeviceObj->instance.wgpuSurface);
        }
        if (_gpuDeviceObj->instance.wgpuInstance) {
            wgpuInstanceRelease(_gpuDeviceObj->instance.wgpuInstance);
        }
        if (_gpuDeviceObj->instance.wgpuAdapter) {
            wgpuAdapterRelease(_gpuDeviceObj->instance.wgpuAdapter);
        }
        if (_gpuDeviceObj->wgpuDevice) {
            wgpuDeviceRelease(_gpuDeviceObj->wgpuDevice);
        }

        delete _gpuDeviceObj;
        _gpuDeviceObj = nullptr;
    }
}

Swapchain *CCWGPUDevice::createSwapchain() {
    return ccnew CCWGPUSwapchain(this);
}

Queue *CCWGPUDevice::createQueue() {
    return ccnew CCWGPUQueue;
}

Buffer *CCWGPUDevice::createBuffer() {
    return ccnew CCWGPUBuffer;
}

Texture *CCWGPUDevice::createTexture() {
    return ccnew CCWGPUTexture;
}

Shader *CCWGPUDevice::createShader() {
    return ccnew CCWGPUShader;
}

InputAssembler *CCWGPUDevice::createInputAssembler() {
    return ccnew CCWGPUInputAssembler;
}

RenderPass *CCWGPUDevice::createRenderPass() {
    return ccnew CCWGPURenderPass;
}

Framebuffer *CCWGPUDevice::createFramebuffer() {
    return ccnew CCWGPUFramebuffer;
}

DescriptorSet *CCWGPUDevice::createDescriptorSet() {
    return ccnew CCWGPUDescriptorSet;
}

DescriptorSetLayout *CCWGPUDevice::createDescriptorSetLayout() {
    return ccnew CCWGPUDescriptorSetLayout;
}

PipelineLayout *CCWGPUDevice::createPipelineLayout() {
    return ccnew CCWGPUPipelineLayout;
}

PipelineState *CCWGPUDevice::createPipelineState() {
    return ccnew CCWGPUPipelineState;
}

CommandBuffer *CCWGPUDevice::createCommandBuffer(const CommandBufferInfo &info, bool hasAgent) {
    return ccnew CCWGPUCommandBuffer;
}

Shader *CCWGPUDevice::createShader(const ShaderInfo &info, const std::vector<std::vector<uint32_t>> &spvData) {
    auto *shader = ccnew CCWGPUShader;
    shader->initialize(info, spvData);
    return shader;
}

void CCWGPUDevice::copyBuffersToTexture(const uint8_t *const *buffers, Texture *dst, const BufferTextureCopy *regions, uint count) {
    Format dstFormat = dst->getFormat();
    uint32_t pxSize = GFX_FORMAT_INFOS[static_cast<uint>(dstFormat)].size;
    auto *texture = static_cast<CCWGPUTexture *>(dst);
    auto blockSize = formatAlignment(dstFormat);

    auto *ccTexture = static_cast<CCWGPUTexture *>(texture);
    if (ccTexture->isTextureView()) {
        ccTexture = static_cast<CCWGPUTexture *>(ccTexture->getViewInfo().texture);
    }

    for (size_t i = 0; i < count; i++) {
        const auto &region = regions[i];
        auto bufferPixelWidth = region.buffStride > 0 ? region.buffStride : region.texExtent.width;
        auto bufferPixelHeight = region.buffTexHeight > 0 ? region.buffTexHeight : region.texExtent.height;
        auto bytesPerRow = formatSize(dstFormat, region.texExtent.width, 1, 1);
        auto bufferBytesPerRow = formatSize(dstFormat, bufferPixelWidth, 1, 1);
        auto bufferBytesPerImageSlice = formatSize(dstFormat, bufferPixelWidth, bufferPixelHeight, 1);
        auto bufferBytesPerImageLayer = formatSize(dstFormat, bufferPixelWidth, bufferPixelHeight, region.texExtent.depth);
        auto targetWidth = region.texExtent.width == 0 ? 0 : utils::alignTo(region.texExtent.width, blockSize.first);
        auto targetHeight = region.texExtent.height == 0 ? 0 : utils::alignTo(region.texExtent.height, blockSize.second);

        // it's buffer data layout
        WGPUTextureDataLayout texDataLayout = {
            .offset = 0,
            .bytesPerRow = bufferBytesPerRow,
            .rowsPerImage = bufferPixelHeight,
        };

        bool compactInWidth = bufferPixelWidth == region.texExtent.width;
        for (size_t l = region.texSubres.baseArrayLayer; l < region.texSubres.layerCount + region.texSubres.baseArrayLayer; ++l) {
            for (size_t d = region.texOffset.z; d < region.texExtent.depth + region.texOffset.z; ++d) {
                if (compactInWidth) {
                    auto *srcData = buffers[i] + region.buffOffset + (l - region.texSubres.baseArrayLayer) * bufferBytesPerImageLayer + (d - region.texOffset.z) * bufferBytesPerImageSlice;
                    WGPUImageCopyTexture imageCopyTexture = {
                        .texture = ccTexture->gpuTextureObject()->wgpuTexture,
                        .mipLevel = region.texSubres.mipLevel,
                        .origin = WGPUOrigin3D{
                            static_cast<uint32_t>(region.texOffset.x),
                            static_cast<uint32_t>(region.texOffset.y),
                            static_cast<uint32_t>(l)},
                        .aspect = WGPUTextureAspect_All,
                    };

                    WGPUExtent3D extent = {
                        .width = targetWidth,
                        .height = targetHeight,
                        .depthOrArrayLayers = 1,
                    };

                    wgpuQueueWriteTexture(_gpuDeviceObj->wgpuQueue, &imageCopyTexture, srcData, bufferBytesPerImageSlice, &texDataLayout, &extent);
                } else {
                    for (size_t h = region.texOffset.y; h < region.texExtent.height + region.texOffset.y; h += blockSize.second) {
                        auto *srcData = buffers[i] + region.buffOffset + (l - region.texSubres.baseArrayLayer) * bufferBytesPerImageLayer + (d - region.texOffset.z) * bufferBytesPerImageSlice +
                                        (h - region.texOffset.y) / blockSize.second * bufferBytesPerRow;
                        WGPUImageCopyTexture imageCopyTexture = {
                            .texture = ccTexture->gpuTextureObject()->wgpuTexture,
                            .mipLevel = region.texSubres.mipLevel,
                            .origin = WGPUOrigin3D{
                                static_cast<uint32_t>(region.texOffset.x),
                                static_cast<uint32_t>(h),
                                static_cast<uint32_t>(l)},
                            .aspect = WGPUTextureAspect_All,
                        };

                        WGPUExtent3D extent = {
                            .width = targetWidth,
                            .height = blockSize.second,
                            .depthOrArrayLayers = 1,
                        };

                        wgpuQueueWriteTexture(_gpuDeviceObj->wgpuQueue, &imageCopyTexture, srcData, bytesPerRow, &texDataLayout, &extent);
                    }
                }
            }
            if (hasFlag(ccTexture->getInfo().flags, TextureFlags::GEN_MIPMAP)) {
                genMipMap(ccTexture, 1, ccTexture->getInfo().levelCount - 1, l, _cmdBuff);
            }
        }
    }
}

void onQueueDone(WGPUQueueWorkDoneStatus status, void *userdata) {
    if (status == WGPUQueueWorkDoneStatus_Success) {
        auto *bufferMapData = static_cast<BufferMapData *>(userdata);
        // auto* mappedBuffer        = wgpuBufferGetMappedRange(bufferMapData->buffer, 0, bufferMapData->size);
        auto *mappedBuffer = (uint8_t *)malloc(static_cast<uint32_t>(bufferMapData->size));
        *bufferMapData->retBuffer = emscripten::val(emscripten::typed_memory_view(bufferMapData->size, static_cast<uint8_t *>(mappedBuffer)));
        bufferMapData->finished = true;
        // memcpy(bufferMapData->dst, mappedBuffer, bufferMapData->size);
    }
}

emscripten::val CCWGPUDevice::copyTextureToBuffers(Texture *src, const BufferTextureCopyList &regions) {
    // auto *texture = static_cast<CCWGPUTexture *>(src);
    // Format dstFormat = src->getFormat();
    // uint32_t pxSize = GFX_FORMAT_INFOS[static_cast<uint32_t>(dstFormat)].size;
    // auto wgpuCommandEncoder = wgpuDeviceCreateCommandEncoder(CCWGPUDevice::getInstance()->gpuDeviceObject()->wgpuDevice, nullptr);

    // uint64_t size = std::accumulate(regions.begin(), regions.end(), 0, [pxSize](uint64_t initVal, const BufferTextureCopy &in) {
    //     uint32_t bytesPerRow = (pxSize * in.texExtent.width + 255) / 256 * 256;
    //     uint32_t bufferSize = bytesPerRow * in.texExtent.height * in.texExtent.depth;
    //     return initVal + bufferSize;
    // });

    // WGPUBufferDescriptor descriptor = {
    //     .nextInChain = nullptr,
    //     .label = nullptr,
    //     .usage = WGPUBufferUsage_MapRead | WGPUBufferUsage_CopyDst,
    //     .size = size,
    //     .mappedAtCreation = false,
    // };

    // WGPUBuffer buffer = wgpuDeviceCreateBuffer(CCWGPUDevice::getInstance()->gpuDeviceObject()->wgpuDevice, &descriptor);
    // uint64_t offset = 0;
    // for (size_t i = 0; i < regions.size(); i++) {
    //     uint32_t bytesPerRow = (pxSize * regions[i].texExtent.width + 255) / 256 * 256;
    //     WGPUImageCopyTexture imageCopyTexture = {
    //         .texture = texture->gpuTextureObject()->wgpuTexture,
    //         .mipLevel = regions[i].texSubres.mipLevel,
    //         .origin = WGPUOrigin3D{
    //             static_cast<uint32_t>(regions[i].texOffset.x),
    //             static_cast<uint32_t>(regions[i].texOffset.y),
    //             static_cast<uint32_t>(regions[i].texOffset.z)},
    //         .aspect = WGPUTextureAspect_All,
    //     };

    //     WGPUTextureDataLayout texDataLayout = {
    //         .offset = offset,
    //         .bytesPerRow = bytesPerRow,
    //         .rowsPerImage = regions[i].texExtent.height,
    //     };
    //     uint32_t bufferSize = pxSize * regions[i].texExtent.width * regions[i].texExtent.depth;
    //     offset += bufferSize;

    //     WGPUImageCopyBuffer imageCopyBuffer = {
    //         .layout = texDataLayout,
    //         .buffer = buffer,
    //     };

    //     WGPUExtent3D extent = {
    //         .width = regions[i].texExtent.width,
    //         .height = regions[i].texExtent.height,
    //         .depthOrArrayLayers = regions[i].texExtent.depth,
    //     };

    //     wgpuCommandEncoderCopyTextureToBuffer(wgpuCommandEncoder, &imageCopyTexture, &imageCopyBuffer, &extent);
    // }

    // auto wgpuCommandBuffer = wgpuCommandEncoderFinish(wgpuCommandEncoder, nullptr);
    // wgpuQueueSubmit(CCWGPUDevice::getInstance()->gpuDeviceObject()->wgpuQueue, 1, &wgpuCommandBuffer);
    // printf("Q submit\n");
    // Semaphore sem{0};
    // BufferMapData *bufferMapData = ccnew BufferMapData{
    //     &sem,
    //     buffer,
    //     nullptr,
    //     size,
    //     false,
    // };

    // wgpuQueueOnSubmittedWorkDone(CCWGPUDevice::getInstance()->gpuDeviceObject()->wgpuQueue, 1, onQueueDone, bufferMapData);

    // while (!bufferMapData->finished) {
    //     ;
    // }
    // // wgpuBufferRelease(buffer);
    // return *bufferMapData->retBuffer;
    return emscripten::val::undefined();
}

void CCWGPUDevice::copyTextureToBuffers(Texture *src, uint8_t *const *buffers, const BufferTextureCopy *region, uint32_t count) {
}

void CCWGPUDevice::acquire(Swapchain *const *swapchains, uint32_t count) {
    for (auto *swapchain : _swapchains) {
        swapchain->update();
    }
}

QueryPool *CCWGPUDevice::createQueryPool() {
    return ccnew CCWGPUQueryPool;
}

Sampler *CCWGPUDevice::createSampler(const SamplerInfo &info) {
    return ccnew CCWGPUSampler(info);
}

void CCWGPUDevice::present() {
    auto *queue = static_cast<CCWGPUQueue *>(_queue);
    _numDrawCalls = queue->getNumDrawCalls();
    _numInstances = queue->getNumInstances();
    _numTriangles = queue->getNumTris();
    queue->resetStatus();

    CCWGPUDescriptorSet::clearCache();

    _currentFrameIndex = (++_currentFrameIndex) % CC_WGPU_MAX_FRAME_COUNT;
}

void CCWGPUDevice::getQueryPoolResults(QueryPool *queryPool) {
    // _cmdBuff->getQueryPoolResults(queryPool);
}

void CCWGPUDevice::debug() {
    // auto wgpuCommandEncoder = wgpuDeviceCreateCommandEncoder(CCWGPUDevice::getInstance()->gpuDeviceObject()->wgpuDevice, nullptr);
    // auto wgpuCommandBuffer = wgpuCommandEncoderFinish(wgpuCommandEncoder, nullptr);
    // wgpuQueueSubmit(CCWGPUDevice::getInstance()->gpuDeviceObject()->wgpuQueue, 1, &wgpuCommandBuffer);
}

void CCWGPUDevice::initConfigs() {
    WGPUAdapterProperties props{};
    wgpuAdapterGetProperties(_gpuDeviceObj->instance.wgpuAdapter, &props);
    // _deviceName = props.name;
    // _vendor = props.driverDescription;

    const auto &adapterName = getAdapterTypeName(props.adapterType);
    const auto &backendName = getBackendTypeName(props.backendType);

    printf("WebGPU:%s enabled with: %s , adapter:%s, backend: %s, vendorID: %u, deviceID:%u\n",
           _deviceName.c_str(), _vendor.c_str(), adapterName.c_str(), backendName.c_str(), props.vendorID, props.deviceID);

    if (wgpuAdapterHasFeature(_gpuDeviceObj->instance.wgpuAdapter, WGPUFeatureName_TextureCompressionBC)) {
        _formatFeatures[toNumber(Format::BC1_ALPHA)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC1_SRGB_ALPHA)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC2)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC2_SRGB)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC3)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC3_SRGB)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC4)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC4_SNORM)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC5_SNORM)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC6H_SF16)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC6H_UF16)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC7)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::BC7_SRGB)] = FormatFeature::SAMPLED_TEXTURE;
    }

    if (wgpuAdapterHasFeature(_gpuDeviceObj->instance.wgpuAdapter, WGPUFeatureName_TextureCompressionETC2)) {
        _formatFeatures[toNumber(Format::ETC2_RGBA8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ETC2_SRGB8_A8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ETC2_RGB8_A1)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ETC2_SRGB8_A1)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ETC2_RGB8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ETC2_SRGB8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::EAC_R11)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::EAC_R11SN)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::EAC_RG11)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::EAC_RG11SN)] = FormatFeature::SAMPLED_TEXTURE;
    }

    if (wgpuAdapterHasFeature(_gpuDeviceObj->instance.wgpuAdapter, WGPUFeatureName_TextureCompressionASTC)) {
        _formatFeatures[toNumber(Format::ASTC_RGBA_4X4)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_4X4)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_5X4)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_5X4)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_5X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_5X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_6X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_6X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_6X6)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_6X6)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_8X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_8X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_8X6)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_8X6)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_8X8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_8X8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_10X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_10X5)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_10X6)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_10X6)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_10X8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_10X8)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_10X10)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_10X10)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_12X10)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_SRGBA_12X10)] = FormatFeature::SAMPLED_TEXTURE;
        _formatFeatures[toNumber(Format::ASTC_RGBA_12X12)] = FormatFeature::SAMPLED_TEXTURE;
    }
}

void CCWGPUDevice::initLimits() {
    WGPUSupportedLimits supportLimits;

    // Aug-19th 2022: getlimits not impled.

#if 0
    wgpuAdapterGetLimits(_gpuDeviceObj->instance.wgpuAdapter, &supportLimits);

    const auto &limits = supportLimits.limits;
    _caps.maxVertexAttributes = limits.maxVertexAttributes;
    _caps.maxVertexUniformVectors = 256;
    _caps.maxFragmentUniformVectors = 256;
    _caps.maxTextureUnits = limits.maxSamplersPerShaderStage;
    _caps.maxImageUnits = limits.maxSampledTexturesPerShaderStage;
    _caps.maxVertexTextureUnits = limits.maxSampledTexturesPerShaderStage;
    _caps.maxShaderStorageBufferBindings = limits.maxStorageBuffersPerShaderStage;
    _caps.maxUniformBlockSize = limits.maxUniformBufferBindingSize;
    _caps.maxShaderStorageBlockSize = limits.maxStorageBufferBindingSize;
    _caps.maxShaderStorageBufferBindings = limits.maxStorageBuffersPerShaderStage;
    _caps.maxTextureSize = limits.maxTextureDimension2D;
    _caps.uboOffsetAlignment = limits.minUniformBufferOffsetAlignment;

    _caps.maxComputeSharedMemorySize = limits.maxComputeWorkgroupStorageSize;
    _caps.maxComputeWorkGroupInvocations = limits.maxComputeInvocationsPerWorkgroup;
    _caps.maxComputeWorkGroupSize = {limits.maxComputeWorkgroupsPerDimension, limits.maxComputeWorkgroupsPerDimension, limits.maxComputeWorkgroupsPerDimension};
    _caps.maxComputeWorkGroupCount = {limits.maxComputeWorkgroupSizeX, limits.maxComputeWorkgroupSizeY, limits.maxComputeWorkgroupSizeZ};

#endif
}

void CCWGPUDevice::initFeatures() {
    const FormatFeature completeFeature = FormatFeature::RENDER_TARGET | FormatFeature::SAMPLED_TEXTURE | FormatFeature::LINEAR_FILTER | FormatFeature::STORAGE_TEXTURE;

    FormatFeature tempFeature = FormatFeature::RENDER_TARGET | FormatFeature::SAMPLED_TEXTURE | FormatFeature::STORAGE_TEXTURE;

    // render target
    _formatFeatures[toNumber(Format::R8)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R8UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R8I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RG8)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RG8UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RG8I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA8)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::SRGB8_A8)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA8UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA8I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::BGRA8)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R16UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R16I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R16F)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RG16UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RG16I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RG16F)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA16UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA16I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA16F)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R32UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R32I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R32F)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R32UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::R32I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RG32F)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA32UI)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA32I)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGBA32F)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::RGB10A2)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::DEPTH)] |= FormatFeature::RENDER_TARGET;
    _formatFeatures[toNumber(Format::DEPTH_STENCIL)] |= FormatFeature::RENDER_TARGET;

    // storage
    _formatFeatures[toNumber(Format::RGBA8)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA8SN)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA8UI)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA8I)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA16UI)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA16I)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA16F)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::R32UI)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::R32I)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::R32F)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::R32UI)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::R32I)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RG32F)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA32UI)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA32I)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA32F)] |= FormatFeature::STORAGE_TEXTURE;
    _formatFeatures[toNumber(Format::RGB10A2)] |= FormatFeature::STORAGE_TEXTURE;

    // sampled
    _formatFeatures[toNumber(Format::R8)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R8SN)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R8UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R8I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG8)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG8SN)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG8UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG8I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA8)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::SRGB8_A8)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA8SN)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA8UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA8I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::BGRA8)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R16UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R16I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R16F)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG16UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG16I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG16F)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA16UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA16I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA16F)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R32UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R32I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R32F)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R32UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R32I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RG32F)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA32UI)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA32I)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGBA32F)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::RGB10A2)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::R11G11B10F)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::DEPTH)] |= FormatFeature::SAMPLED_TEXTURE;
    _formatFeatures[toNumber(Format::DEPTH_STENCIL)] |= FormatFeature::SAMPLED_TEXTURE;

    _formatFeatures[toNumber(Format::RGB9E5)] |= FormatFeature::SAMPLED_TEXTURE;

    _formatFeatures[toNumber(Format::R8)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG8)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB8)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA8)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R8SN)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG8SN)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB8SN)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA8SN)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R8I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG8I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB8I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA8I)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R8UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG8UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB8UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA8UI)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R16I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG16I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB16I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA16I)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R16UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG16UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB16UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA16UI)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R16F)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG16F)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB16F)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA16F)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R32UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG32UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB32UI)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA32UI)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R32I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG32I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB32I)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA32I)] |= FormatFeature::VERTEX_ATTRIBUTE;

    _formatFeatures[toNumber(Format::R32F)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RG32F)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGB32F)] |= FormatFeature::VERTEX_ATTRIBUTE;
    _formatFeatures[toNumber(Format::RGBA32F)] |= FormatFeature::VERTEX_ATTRIBUTE;

    //
    _features[toNumber(Feature::ELEMENT_INDEX_UINT)] = true;
    _features[toNumber(Feature::INSTANCED_ARRAYS)] = true;
    _features[toNumber(Feature::MULTIPLE_RENDER_TARGETS)] = true;
    _features[toNumber(Feature::BLEND_MINMAX)] = true;
    _features[toNumber(Feature::COMPUTE_SHADER)] = true;
    _features[toNumber(Feature::INPUT_ATTACHMENT_BENEFIT)] = true;
}

} // namespace gfx

} // namespace cc