// Copyright 2017 The NXT Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "backend/opengl/OpenGLBackend.h"

#include "backend/opengl/BlendStateGL.h"
#include "backend/opengl/BufferGL.h"
#include "backend/opengl/CommandBufferGL.h"
#include "backend/opengl/ComputePipelineGL.h"
#include "backend/opengl/DepthStencilStateGL.h"
#include "backend/opengl/InputStateGL.h"
#include "backend/opengl/PipelineLayoutGL.h"
#include "backend/opengl/RenderPipelineGL.h"
#include "backend/opengl/SamplerGL.h"
#include "backend/opengl/ShaderModuleGL.h"
#include "backend/opengl/SwapChainGL.h"
#include "backend/opengl/TextureGL.h"

namespace backend { namespace opengl {
    nxtProcTable GetNonValidatingProcs();
    nxtProcTable GetValidatingProcs();

    void Init(void* (*getProc)(const char*), nxtProcTable* procs, nxtDevice* device) {
        *device = nullptr;

        gladLoadGLLoader(reinterpret_cast<GLADloadproc>(getProc));

        *procs = GetValidatingProcs();
        *device = reinterpret_cast<nxtDevice>(new Device);

        glEnable(GL_DEPTH_TEST);
        glEnable(GL_SCISSOR_TEST);
        glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
    }

    // Device

    BindGroupBase* Device::CreateBindGroup(BindGroupBuilder* builder) {
        return new BindGroup(builder);
    }
    BindGroupLayoutBase* Device::CreateBindGroupLayout(BindGroupLayoutBuilder* builder) {
        return new BindGroupLayout(builder);
    }
    BlendStateBase* Device::CreateBlendState(BlendStateBuilder* builder) {
        return new BlendState(builder);
    }
    BufferBase* Device::CreateBuffer(BufferBuilder* builder) {
        return new Buffer(builder);
    }
    BufferViewBase* Device::CreateBufferView(BufferViewBuilder* builder) {
        return new BufferView(builder);
    }
    CommandBufferBase* Device::CreateCommandBuffer(CommandBufferBuilder* builder) {
        return new CommandBuffer(builder);
    }
    ComputePipelineBase* Device::CreateComputePipeline(ComputePipelineBuilder* builder) {
        return new ComputePipeline(builder);
    }
    DepthStencilStateBase* Device::CreateDepthStencilState(DepthStencilStateBuilder* builder) {
        return new DepthStencilState(builder);
    }
    InputStateBase* Device::CreateInputState(InputStateBuilder* builder) {
        return new InputState(builder);
    }
    PipelineLayoutBase* Device::CreatePipelineLayout(PipelineLayoutBuilder* builder) {
        return new PipelineLayout(builder);
    }
    QueueBase* Device::CreateQueue(QueueBuilder* builder) {
        return new Queue(builder);
    }
    RenderPassDescriptorBase* Device::CreateRenderPassDescriptor(
        RenderPassDescriptorBuilder* builder) {
        return new RenderPassDescriptor(builder);
    }
    RenderPipelineBase* Device::CreateRenderPipeline(RenderPipelineBuilder* builder) {
        return new RenderPipeline(builder);
    }
    SamplerBase* Device::CreateSampler(SamplerBuilder* builder) {
        return new Sampler(builder);
    }
    ShaderModuleBase* Device::CreateShaderModule(ShaderModuleBuilder* builder) {
        return new ShaderModule(builder);
    }
    SwapChainBase* Device::CreateSwapChain(SwapChainBuilder* builder) {
        return new SwapChain(builder);
    }
    TextureBase* Device::CreateTexture(TextureBuilder* builder) {
        return new Texture(builder);
    }
    TextureViewBase* Device::CreateTextureView(TextureViewBuilder* builder) {
        return new TextureView(builder);
    }

    void Device::TickImpl() {
    }

    // Bind Group

    BindGroup::BindGroup(BindGroupBuilder* builder) : BindGroupBase(builder) {
    }

    // Bind Group Layout

    BindGroupLayout::BindGroupLayout(BindGroupLayoutBuilder* builder)
        : BindGroupLayoutBase(builder) {
    }

    // Queue

    Queue::Queue(QueueBuilder* builder) : QueueBase(builder) {
    }

    void Queue::Submit(uint32_t numCommands, CommandBuffer* const* commands) {
        for (uint32_t i = 0; i < numCommands; ++i) {
            commands[i]->Execute();
        }
    }

    // RenderPassDescriptor

    RenderPassDescriptor::RenderPassDescriptor(RenderPassDescriptorBuilder* builder)
        : RenderPassDescriptorBase(builder) {
    }

}}  // namespace backend::opengl