// Copyright 2019 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "src/dawn/native/RenderBundleEncoder.h"

#include <string>
#include <utility>

#include "dawn/native/ObjectType_autogen.h"
#include "dawn/native/ValidationUtils_autogen.h"
#include "dawn/platform/DawnPlatform.h"
#include "src/dawn/common/Enumerator.h"
#include "src/dawn/native/Adapter.h"
#include "src/dawn/native/CommandValidation.h"
#include "src/dawn/native/Commands.h"
#include "src/dawn/native/Device.h"
#include "src/dawn/native/Format.h"
#include "src/dawn/native/RenderPipeline.h"
#include "src/dawn/platform/tracing/TraceEvent.h"
#include "src/utils/compiler.h"

namespace dawn::native {

MaybeValError ValidateColorAttachmentFormat(const DeviceBase* device,
                                            wgpu::TextureFormat textureFormat) {
    DAWN_TRY(ValidateTextureFormat(textureFormat));
    const Format* format = nullptr;
    DAWN_TRY_ASSIGN(format, device->GetInternalFormat(textureFormat));
    DAWN_INVALID_IF(!format->IsColor() || !format->IsRenderable(),
                    "Texture format %s is not color renderable.", textureFormat);
    return {};
}

MaybeValError ValidateDepthStencilAttachmentFormat(const DeviceBase* device,
                                                   wgpu::TextureFormat textureFormat,
                                                   bool depthReadOnly,
                                                   bool stencilReadOnly) {
    DAWN_TRY(ValidateTextureFormat(textureFormat));
    const Format* format = nullptr;
    DAWN_TRY_ASSIGN(format, device->GetInternalFormat(textureFormat));
    DAWN_INVALID_IF(!format->HasDepthOrStencil() || !format->IsRenderable(),
                    "Texture format %s is not depth/stencil renderable.", textureFormat);
    return {};
}

ResultOrValError<UnpackedPtr<RenderBundleEncoderDescriptor>> ValidateRenderBundleEncoderDescriptor(
    DeviceBase* device,
    const RenderBundleEncoderDescriptor* descriptor) {
    UnpackedPtr<RenderBundleEncoderDescriptor> unpacked;
    DAWN_TRY_ASSIGN(unpacked, ValidateAndUnpack(descriptor));
    if (!device->IsToggleEnabled(Toggle::AllowExperimentalAPIs)) {
        // Only the chained structs that are part of the stable ABI may be used.
        DAWN_TRY_CONTEXT(unpacked.ValidateStable(),
                         "validating %s with allow_experimental_apis disabled", descriptor);
    }

    if (auto* rt = unpacked.Get<RenderBundleEncoderResourceTable>()) {
        DAWN_INVALID_IF(rt->usesResourceTable &&
                            !device->HasFeature(Feature::ChromiumExperimentalSamplingResourceTable),
                        "Resource table used without the %s feature enabled.",
                        wgpu::FeatureName::ChromiumExperimentalSamplingResourceTable);
    }

    DAWN_INVALID_IF(!IsValidSampleCount(descriptor->sampleCount),
                    "Sample count (%u) is not supported.", descriptor->sampleCount);

    auto maxColorAttachments =
        ColorAttachmentIndex{static_cast<uint8_t>(device->GetLimits().v1.maxColorAttachments)};
    DAWN_INVALID_IF(
        descriptor->colorFormats.size() > maxColorAttachments,
        "Color formats count (%u) exceeds maximum number of color attachments (%u).%s",
        descriptor->colorFormats.size(), maxColorAttachments,
        DAWN_INCREASE_LIMIT_MESSAGE(device->GetAdapter()->GetLimits().v1, maxColorAttachments,
                                    uint8_t{descriptor->colorFormats.size()}));

    bool allColorFormatsUndefined = true;
    ColorAttachmentFormats colorAttachmentFormats;
    for (auto [i, format] : Enumerate(descriptor->colorFormats)) {
        if (format != wgpu::TextureFormat::Undefined) {
            DAWN_TRY_CONTEXT(ValidateColorAttachmentFormat(device, format),
                             "validating colorFormats[%u]", i);
            colorAttachmentFormats.push_back(&device->GetValidInternalFormat(format));
            allColorFormatsUndefined = false;
        }
    }
    DAWN_TRY_CONTEXT(ValidateColorAttachmentBytesPerSample(device, colorAttachmentFormats),
                     "validating color attachment bytes per sample.");

    if (descriptor->depthStencilFormat != wgpu::TextureFormat::Undefined) {
        DAWN_TRY_CONTEXT(ValidateDepthStencilAttachmentFormat(
                             device, descriptor->depthStencilFormat, descriptor->depthReadOnly,
                             descriptor->stencilReadOnly),
                         "validating depthStencilFormat");
    } else {
        DAWN_INVALID_IF(
            allColorFormatsUndefined,
            "No color or depthStencil attachments specified. At least one is required.");
    }

    return unpacked;
}

RenderBundleEncoder::RenderBundleEncoder(
    DeviceBase* device,
    const UnpackedPtr<RenderBundleEncoderDescriptor>& descriptor)
    : RenderEncoderBase(device,
                        descriptor->label,
                        &mBundleEncodingContext,
                        RenderPassResourceUsageTracker(device->GetNextPassTrackerID()),
                        device->GetOrCreateAttachmentState(descriptor),
                        descriptor->depthReadOnly,
                        descriptor->stencilReadOnly),
      mBundleEncodingContext(device, this) {
    GetObjectTrackingList()->Track(this);

    // Gather the resource table information.
    if (auto* rt = descriptor.Get<RenderBundleEncoderResourceTable>()) {
        mUsesResourceTable = rt->usesResourceTable;
        if (mUsesResourceTable) {
            mCommandBufferState.SetRenderBundleHasResourceTable();
        }
    }
}

RenderBundleEncoder::RenderBundleEncoder(DeviceBase* device, ErrorTag errorTag, StringView label)
    : RenderEncoderBase(device, &mBundleEncodingContext, errorTag, label),
      mBundleEncodingContext(device, errorTag) {}

RenderBundleEncoder::~RenderBundleEncoder() {
    mEncodingContext = nullptr;
}

void RenderBundleEncoder::DestroyImpl(DestroyReason reason) {
    mCommandBufferState.End();
    // Resource usages contain raw_ptrs to resources held by recorded commands. Clear them
    // before releasing references in mIndirectDrawMetadata or commands to avoid dangling raw_ptrs.
    mUsages = {};
    mIndirectDrawMetadata.ClearIndexedIndirectBufferValidationInfo();
    mBundleEncodingContext.Destroy();
    RenderEncoderBase::DestroyImpl(reason);
}

// static
Ref<RenderBundleEncoder> RenderBundleEncoder::Create(
    DeviceBase* device,
    const UnpackedPtr<RenderBundleEncoderDescriptor>& descriptor) {
    return AcquireRef(new RenderBundleEncoder(device, descriptor));
}

// static
Ref<RenderBundleEncoder> RenderBundleEncoder::MakeError(DeviceBase* device, StringView label) {
    return AcquireRef(new RenderBundleEncoder(device, ObjectBase::kError, label));
}

ObjectType RenderBundleEncoder::GetType() const {
    return ObjectType::RenderBundleEncoder;
}

CommandIterator RenderBundleEncoder::AcquireCommands() {
    return mBundleEncodingContext.AcquireCommands();
}

RenderPassResourceUsage RenderBundleEncoder::AcquireRenderPassUsages() {
    return std::move(mUsages);
}

IndirectDrawMetadata RenderBundleEncoder::AcquireIndirectDrawMetadata() {
    return std::move(mIndirectDrawMetadata);
}

RenderBundleBase* RenderBundleEncoder::APIFinish(const RenderBundleDescriptor* descriptor) {
    Ref<RenderBundleBase> result;

    if (GetDevice()->ConsumedError(Finish(descriptor), &result, "calling %s.Finish(%s).", this,
                                   descriptor)) {
        result = RenderBundleBase::MakeError(GetDevice(), descriptor ? descriptor->label : nullptr);
        result->SetEncoderLabel(this->GetLabel());
    }

    return ReturnToAPI(std::move(result));
}

bool RenderBundleEncoder::UsesResourceTable() const {
    return mUsesResourceTable;
}

ResultOrUnknownError<Ref<RenderBundleBase>> RenderBundleEncoder::Finish(
    const RenderBundleDescriptor* descriptor) {
    mCommandBufferState.End();
    // Even if mBundleEncodingContext.Finish() validation fails, calling it will mutate the
    // internal state of the encoding context. Subsequent calls to encode commands will generate
    // errors.
    DAWN_TRY(mBundleEncodingContext.Finish());
    DAWN_TRY(GetDevice()->ValidateIsAlive());

    mUsages = mUsageTracker.AcquireResourceUsage();
    if (IsValidationEnabled()) {
        DAWN_TRY(ValidateFinish(mUsages));
    }
    return GetDevice()->CreateRenderBundle(this, descriptor);
}

MaybeValError RenderBundleEncoder::ValidateFinish(const RenderPassResourceUsage& usages) const {
    TRACE_EVENT(DAWN_TRACE_CATEGORY("validation"), "RenderBundleEncoder::ValidateFinish");
    DAWN_TRY(GetDevice()->ValidateObject(this));
    DAWN_TRY(ValidateProgrammableEncoderEnd());
    DAWN_TRY(ValidateSyncScopeResourceUsage(usages));
    return {};
}

}  // namespace dawn::native