////  DebugDeferredBuffer.cpp//  libraries/render-utils/src////  Created by Clement on 12/3/15.//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "DebugDeferredBuffer.h" #include <QFile> #include <gpu/Batch.h>#include <gpu/Context.h>#include <render/Scene.h>#include <ViewFrustum.h> #include "GeometryCache.h"#include "FramebufferCache.h"#include "DeferredLightingEffect.h" #include "debug_deferred_buffer_vert.h"#include "debug_deferred_buffer_frag.h" using namespace render; void DebugDeferredBufferConfig::setMode(int newMode) {    if (newMode == mode) {        return;    } else if (newMode > DebugDeferredBuffer::CustomMode || newMode < 0) {        mode = DebugDeferredBuffer::CustomMode;    } else {        mode = newMode;    }    emit dirty();} enum Slot {    Diffuse = 0,    Normal,    Specular,    Depth,    Lighting,    Shadow,    Pyramid,    AmbientOcclusion,    AmbientOcclusionBlurred};   static const std::string DEFAULT_DIFFUSE_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(pow(texture(diffuseMap, uv).xyz, vec3(1.0 / 2.2)), 1.0);"    " }"}; static const std::string DEFAULT_SPECULAR_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(texture(specularMap, uv).xyz, 1.0);"    " }"};static const std::string DEFAULT_ROUGHNESS_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(vec3(texture(specularMap, uv).a), 1.0);"    " }"};static const std::string DEFAULT_NORMAL_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(normalize(texture(normalMap, uv).xyz * 2.0 - vec3(1.0)), 1.0);"    " }"};static const std::string DEFAULT_DEPTH_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(vec3(texture(depthMap, uv).x), 1.0);"    " }"};static const std::string DEFAULT_LIGHTING_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(pow(texture(lightingMap, uv).xyz, vec3(1.0 / 2.2)), 1.0);"    " }"};static const std::string DEFAULT_SHADOW_SHADER {    "uniform sampler2DShadow shadowMap;"    "vec4 getFragmentColor() {"    "    for (int i = 255; i >= 0; --i) {"    "        float depth = i / 255.0;"    "        if (texture(shadowMap, vec3(uv, depth)) > 0.5) {"    "            return vec4(vec3(depth), 1.0);"    "        }"    "    }"    "    return vec4(vec3(0.0), 1.0);"    " }"}; static const std::string DEFAULT_PYRAMID_DEPTH_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(vec3(1.0 - texture(pyramidMap, uv).x * 0.01), 1.0);"    //"    return vec4(vec3(1.0 - textureLod(pyramidMap, uv, 3).x * 0.01), 1.0);"    " }"}; static const std::string DEFAULT_AMBIENT_OCCLUSION_SHADER{    "vec4 getFragmentColor() {"    "    return vec4(vec3(texture(occlusionMap, uv).x), 1.0);"    // When drawing color "    return vec4(vec3(texture(occlusionMap, uv).xyz), 1.0);"    // when drawing normal "    return vec4(normalize(texture(occlusionMap, uv).xyz * 2.0 - vec3(1.0)), 1.0);"    " }"};static const std::string DEFAULT_AMBIENT_OCCLUSION_BLURRED_SHADER{    "vec4 getFragmentColor() {"    "    return vec4(vec3(texture(occlusionBlurredMap, uv).x), 1.0);"    " }"}; static const std::string DEFAULT_CUSTOM_SHADER {    "vec4 getFragmentColor() {"    "    return vec4(1.0, 0.0, 0.0, 1.0);"    " }"}; static std::string getFileContent(std::string fileName, std::string defaultContent = std::string()) {    QFile customFile(QString::fromStdString(fileName));    if (customFile.open(QIODevice::ReadOnly)) {        return customFile.readAll().toStdString();    }    qWarning() << "DebugDeferredBuffer::getFileContent(): Could not open"               << QString::fromStdString(fileName);    return defaultContent;} #include <QStandardPaths> // TODO REMOVE: Temporary until UIDebugDeferredBuffer::DebugDeferredBuffer() {    // TODO REMOVE: Temporary until UI    static const auto DESKTOP_PATH = QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);    static const auto CUSTOM_FILE = DESKTOP_PATH.toStdString() + "/custom.slh";    CustomPipeline pipeline;    pipeline.info = QFileInfo(QString::fromStdString(CUSTOM_FILE));    _customPipelines.emplace(CUSTOM_FILE, pipeline);} std::string DebugDeferredBuffer::getShaderSourceCode(Mode mode, std::string customFile) {    switch (mode) {        case DiffuseMode:            return DEFAULT_DIFFUSE_SHADER;        case SpecularMode:            return DEFAULT_SPECULAR_SHADER;        case RoughnessMode:            return DEFAULT_ROUGHNESS_SHADER;        case NormalMode:            return DEFAULT_NORMAL_SHADER;        case DepthMode:            return DEFAULT_DEPTH_SHADER;        case LightingMode:            return DEFAULT_LIGHTING_SHADER;        case ShadowMode:            return DEFAULT_SHADOW_SHADER;        case PyramidDepthMode:            return DEFAULT_PYRAMID_DEPTH_SHADER;        case AmbientOcclusionMode:            return DEFAULT_AMBIENT_OCCLUSION_SHADER;        case AmbientOcclusionBlurredMode:            return DEFAULT_AMBIENT_OCCLUSION_BLURRED_SHADER;        case CustomMode:            return getFileContent(customFile, DEFAULT_CUSTOM_SHADER);    }    Q_UNREACHABLE();    return std::string();} bool DebugDeferredBuffer::pipelineNeedsUpdate(Mode mode, std::string customFile) const {    if (mode != CustomMode) {        return !_pipelines[mode];    }        auto it = _customPipelines.find(customFile);    if (it != _customPipelines.end() && it->second.pipeline) {        auto& info = it->second.info;                auto lastModified = info.lastModified();        info.refresh();        return lastModified != info.lastModified();    }        return true;} const gpu::PipelinePointer& DebugDeferredBuffer::getPipeline(Mode mode, std::string customFile) {    if (pipelineNeedsUpdate(mode, customFile)) {        static const std::string VERTEX_SHADER { debug_deferred_buffer_vert };        static const std::string FRAGMENT_SHADER { debug_deferred_buffer_frag };        static const std::string SOURCE_PLACEHOLDER { "//SOURCE_PLACEHOLDER" };        static const auto SOURCE_PLACEHOLDER_INDEX = FRAGMENT_SHADER.find(SOURCE_PLACEHOLDER);        Q_ASSERT_X(SOURCE_PLACEHOLDER_INDEX != std::string::npos, Q_FUNC_INFO,                   "Could not find source placeholder");                auto bakedFragmentShader = FRAGMENT_SHADER;        bakedFragmentShader.replace(SOURCE_PLACEHOLDER_INDEX, SOURCE_PLACEHOLDER.size(),                                    getShaderSourceCode(mode, customFile));                static const auto vs = gpu::Shader::createVertex(VERTEX_SHADER);        const auto ps = gpu::Shader::createPixel(bakedFragmentShader);        const auto program = gpu::Shader::createProgram(vs, ps);                gpu::Shader::BindingSet slotBindings;        slotBindings.insert(gpu::Shader::Binding("diffuseMap", Diffuse));        slotBindings.insert(gpu::Shader::Binding("normalMap", Normal));        slotBindings.insert(gpu::Shader::Binding("specularMap", Specular));        slotBindings.insert(gpu::Shader::Binding("depthMap", Depth));        slotBindings.insert(gpu::Shader::Binding("lightingMap", Lighting));        slotBindings.insert(gpu::Shader::Binding("shadowMap", Shadow));        slotBindings.insert(gpu::Shader::Binding("pyramidMap", Pyramid));        slotBindings.insert(gpu::Shader::Binding("occlusionMap", AmbientOcclusion));        slotBindings.insert(gpu::Shader::Binding("occlusionBlurredMap", AmbientOcclusionBlurred));        gpu::Shader::makeProgram(*program, slotBindings);                auto pipeline = gpu::Pipeline::create(program, std::make_shared<gpu::State>());                // Good to go add the brand new pipeline        if (mode != CustomMode) {            _pipelines[mode] = pipeline;        } else {            _customPipelines[customFile].pipeline = pipeline;        }    }        if (mode != CustomMode) {        return _pipelines[mode];    } else {        return _customPipelines[customFile].pipeline;    }} void DebugDeferredBuffer::configure(const Config& config) {    _mode = (Mode)config.mode;    _size = config.size;} void DebugDeferredBuffer::run(const SceneContextPointer& sceneContext, const RenderContextPointer& renderContext) {    assert(renderContext->args);    assert(renderContext->args->_viewFrustum);    RenderArgs* args = renderContext->args;     gpu::doInBatch(args->_context, [&](gpu::Batch& batch) {        const auto geometryBuffer = DependencyManager::get<GeometryCache>();        const auto framebufferCache = DependencyManager::get<FramebufferCache>();        const auto& lightStage = DependencyManager::get<DeferredLightingEffect>()->getLightStage();                glm::mat4 projMat;        Transform viewMat;        args->_viewFrustum->evalProjectionMatrix(projMat);        args->_viewFrustum->evalViewTransform(viewMat);        batch.setProjectionTransform(projMat);        batch.setViewTransform(viewMat);        batch.setModelTransform(Transform());         // TODO REMOVE: Temporary until UI        auto first = _customPipelines.begin()->first;                batch.setPipeline(getPipeline(_mode, first));                batch.setResourceTexture(Diffuse, framebufferCache->getDeferredColorTexture());        batch.setResourceTexture(Normal, framebufferCache->getDeferredNormalTexture());        batch.setResourceTexture(Specular, framebufferCache->getDeferredSpecularTexture());        batch.setResourceTexture(Depth, framebufferCache->getPrimaryDepthTexture());        batch.setResourceTexture(Lighting, framebufferCache->getLightingTexture());        batch.setResourceTexture(Shadow, lightStage.lights[0]->shadow.framebuffer->getDepthStencilBuffer());        batch.setResourceTexture(Pyramid, framebufferCache->getDepthPyramidTexture());        batch.setResourceTexture(AmbientOcclusion, framebufferCache->getOcclusionTexture());        batch.setResourceTexture(AmbientOcclusionBlurred, framebufferCache->getOcclusionBlurredTexture());         const glm::vec4 color(1.0f, 1.0f, 1.0f, 1.0f);        const glm::vec2 bottomLeft(_size.x, _size.y);        const glm::vec2 topRight(_size.z, _size.w);        geometryBuffer->renderQuad(batch, bottomLeft, topRight, color);    });}