Final day of opengl. Animations mostly work but there's either a problem with the model or the way it's loaded from assimp.

45-animation/src/model.cpp

@@ -177,10 +177,10 @@ Mesh Model::process_mesh(const aiScene *scene, aiMesh *mesh) {
     glm::vec3 bitangent;
 
     if(mesh->HasNormals()) {
-      normal = glm::vec3(
+      normal = glm::vec3{
         mesh->mNormals[i].x,
         mesh->mNormals[i].y,
-        mesh->mNormals[i].z);
+        mesh->mNormals[i].z};
     }
 
     if(mesh->mTextureCoords[0]) {

53-final-cleanup/.gitignore

@@ -0,0 +1,11 @@
+.*.sw*
+.DS_Store
+*.sqlite3
+*.sqlite3-wal
+*.sqlite3-shm
+debug
+coverage/
+.coverage
+builddir
+subprojects
+assets/backpack

53-final-cleanup/.vimrc_proj

@@ -0,0 +1 @@
+set makeprg=meson\ compile\ -C\ .

53-final-cleanup/LICENSE

@@ -0,0 +1,16 @@
+MIT No Attribution
+
+Copyright <YEAR> <COPYRIGHT HOLDER>
+
+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.
+
+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.

53-final-cleanup/Makefile

@@ -0,0 +1,30 @@
+all: build
+
+reset:
+	powershell -executionpolicy bypass .\scripts\reset_build.ps1
+
+build:
+	meson compile -j 4 -C builddir
+
+release_build:
+	meson --wipe builddir -Db_ndebug=true --buildtype release
+	meson compile -j 4 -C builddir
+
+debug_build:
+	meson setup --wipe builddir -Db_ndebug=true --buildtype debugoptimized
+	meson compile -j 4 -C builddir
+
+run: test
+	./builddir/hellogl.exe
+
+test: build
+	./builddir/fuc2it
+
+debug_test: build
+	gdb --nx -x .gdbinit --ex run --args builddir/fuc2it.exe
+
+debug_run: build
+	gdb --nx -x .gdbinit --batch --ex run --ex bt --ex q --args builddir/hellogl.exe
+
+clean:
+	meson compile --clean -C builddir

53-final-cleanup/assets/crate.mtl

@@ -0,0 +1,4 @@
+# Made in Blockbench 5.1.6
+newmtl m_cd2bce81-4f84-6efd-a971-2b9e91f19e2f
+map_Kd container2.png
+newmtl none

53-final-cleanup/assets/crate.obj

@@ -0,0 +1,49 @@
+# Made in Blockbench 5.1.6
+mtllib crate.mtl
+
+o cube
+v 0.1875 0.4375 0.375
+v 0.1875 0.4375 -0.0625
+v 0.1875 0 0.375
+v 0.1875 0 -0.0625
+v -0.25 0.4375 -0.0625
+v -0.25 0.4375 0.375
+v -0.25 0 -0.0625
+v -0.25 0 0.375
+vt 0 1
+vt 1 1
+vt 1 0
+vt 0 0
+vt 0 1
+vt 1 1
+vt 1 0
+vt 0 0
+vt 0 1
+vt 1 1
+vt 1 0
+vt 0 0
+vt 0 1
+vt 1 1
+vt 1 0
+vt 0 0
+vt 0 1
+vt 1 1
+vt 1 0
+vt 0 0
+vt 0 1
+vt 1 1
+vt 1 0
+vt 0 0
+vn 0 0 -1
+vn 1 0 0
+vn 0 0 1
+vn -1 0 0
+vn 0 1 0
+vn 0 -1 0
+usemtl m_cd2bce81-4f84-6efd-a971-2b9e91f19e2f
+f 4/4/1 7/3/1 5/2/1 2/1/1
+f 3/8/2 4/7/2 2/6/2 1/5/2
+f 8/12/3 3/11/3 1/10/3 6/9/3
+f 7/16/4 8/15/4 6/14/4 5/13/4
+f 6/20/5 1/19/5 2/18/5 5/17/5
+f 7/24/6 4/23/6 3/22/6 8/21/6

53-final-cleanup/config.json

@@ -0,0 +1,130 @@
+{
+  "scene": {
+    "shader": {
+      "vertex_path": "shaders/53-framebuffers.vert.glsl",
+      "frag_path": "shaders/53-framebuffers.frag.glsl",
+      "geometry_path": ""
+    },
+    "reflect_shader": {
+      "vertex_path": "shaders/53-reflect.vert.glsl",
+      "frag_path": "shaders/53-reflect.frag.glsl",
+      "geometry_path": ""
+    },
+    "screen_shader": {
+      "vertex_path": "shaders/53-screen.vert.glsl",
+      "frag_path": "shaders/53-screen.frag.glsl",
+      "geometry_path": ""
+    },
+    "skybox_shader": {
+      "vertex_path": "shaders/53-skybox.vert.glsl",
+      "frag_path": "shaders/53-skybox.frag.glsl",
+      "geometry_path": ""
+    },
+    "skybox_faces": [
+      "../assets/skybox/sky/right.jpg",
+      "../assets/skybox/sky/left.jpg",
+      "../assets/skybox/sky/top.jpg",
+      "../assets/skybox/sky/bottom.jpg",
+      "../assets/skybox/sky/front.jpg",
+      "../assets/skybox/sky/back.jpg"
+    ],
+    "materials": {
+      "default": {
+        "ambient": [0.5, 0.5, 0.5],
+        "shininess": 100000.0,
+        "diffuseMap": 0,
+        "specularMap": 0
+      },
+      "shiny": {
+        "ambient": [0.5, 0.5, 0.5],
+        "shininess": 32.0,
+        "diffuseMap": 0,
+        "specularMap": 0
+      }
+    },
+    "models": {
+      "marble_cube": {
+        "directory": "assets",
+        "model_path": "marble_cube.glb"
+      },
+      "metal_floor": {
+        "directory": "assets",
+        "model_path": "metal_floor.glb"
+      },
+      "grass": {
+        "directory": "assets",
+        "model_path": "grass.glb"
+      },
+      "window": {
+        "directory": "assets",
+        "model_path": "window.glb"
+      },
+      "light_bulb": {
+        "directory": "assets",
+        "model_path": "light_bulb.glb"
+      },
+      "human": {
+        "directory": "../assets",
+        "model_path": "janko_pastorius_anim.glb"
+      },
+      "brick_cube": {
+        "directory": "../assets",
+        "model_path": "brick_cube_normal.obj"
+      }
+    },
+    "things": [
+      {"model": "metal_floor", "position": [0.0,  0.0, 0.0],
+        "rotation": {"angle": 0.0, "axes": [1.0, 1.0, 1.0]},
+        "scale": 1.0, "animate": false,
+        "material": "shiny"},
+      {"model": "brick_cube", "position": [-2,  0.21, -1.0],
+        "rotation": {"angle": 0.0, "axes": [1.0, 1.0, 1.0]},
+        "scale": 0.5, "animate": false,
+        "material": "default"},
+      {"model": "human", "position": [1.28,  0.0, 1.33],
+        "rotation": {"angle": 0.0, "axes": [1.0, 1.0, 1.0]},
+        "scale": 1.0, "animate": true,
+        "material": "default"}
+    ],
+    "camera": {
+      "position": [1.5, 1.0, 4.5],
+      "front": [0.0, 0.0, -1.0],
+      "up": [0.0, 1.0, 0.0],
+      "direction": [0.0, 0.0, 0.0],
+      "movement_speed": 10.0
+    },
+    "light": {
+      "directional":
+        {
+          "position": [2.0, 4.0, -1.0],
+          "direction":[0.0, 0.0, 0.0],
+          "ambient":[0.3, 0.3, 0.3],
+          "diffuse":[0.9, 0.9, 0.9],
+          "specular":[1.0, 1.0, 1.0],
+          "constant": 1.0,
+          "linear": 0.05,
+          "quadratic": 0.022,
+          "cut_off": 12.5,
+          "outer_cut_off": 17.5,
+          "on": true
+        },
+      "positioned": [
+      ],
+      "spot": [
+      ],
+      "camera": {
+        "position":[2.2, 1.0, 2.0],
+        "direction":[0.0, 0.0, -1.0],
+        "ambient":[0.2, 0.2, 0.2],
+        "diffuse":[0.8, 0.8, 0.8],
+        "specular":[1.0, 1.0, 1.0],
+        "constant": 1.0,
+        "linear": 0.09,
+        "quadratic": 0.032,
+        "cut_off": 12.5,
+        "outer_cut_off": 17.5,
+        "on": true
+      }
+    }
+  }
+}

53-final-cleanup/meson.build

@@ -0,0 +1,109 @@
+project('hellogl', 'cpp',
+  version: '0.1.0',
+  default_options: [
+    'cpp_std=c++23',
+    'cpp_args=-D_GLIBCXX_DEBUG=1 -D_GLIBCXX_DEBUG_PEDANTIC=1',
+  ])
+
+# use this for common options only for our executables
+cpp_args=[
+  '-Wno-unused-parameter',
+  '-Wno-unused-function',
+  '-Wno-unused-variable',
+  '-Wno-unused-but-set-variable',
+  '-Wno-deprecated-declarations',
+]
+link_args=[]
+# these are passed as override_defaults
+exe_defaults = [ 'warning_level=2' ]
+
+cc = meson.get_compiler('cpp')
+dependencies = []
+
+if build_machine.system() == 'windows'
+  add_global_link_arguments(
+    '-static-libgcc',
+    '-static-libstdc++',
+    '-static',
+    '-lstdc++exp',
+    language: 'cpp',
+  )
+
+  opengl32 = cc.find_library('opengl32', required: true)
+  winmm = cc.find_library('winmm', required: true)
+  gdi32 = cc.find_library('gdi32', required: true)
+
+  dependencies += [
+      opengl32, winmm, gdi32
+  ]
+  exe_defaults += ['werror=true']
+
+elif build_machine.system() == 'darwin'
+  add_global_link_arguments(
+    language: 'cpp',
+  )
+
+  opengl = dependency('OpenGL')
+  corefoundation = dependency('CoreFoundation')
+  carbon = dependency('Carbon')
+  cocoa = dependency('Cocoa')
+  iokit = dependency('IOKit')
+  corevideo = dependency('CoreVideo')
+
+  link_args += ['-ObjC']
+  exe_defaults += ['werror=false']
+  dependencies += [
+    opengl, corefoundation, carbon, cocoa, iokit, corevideo
+  ]
+endif
+
+glfw3 = subproject('glfw').get_variable('glfw_dep')
+fuc2 = subproject('fuc2').get_variable('fuc2_dep')
+fmt = subproject('fmt').get_variable('fmt_dep')
+glm = subproject('glm').get_variable('glm_dep')
+json = subproject('nlohmann_json').get_variable('nlohmann_json_dep')
+freetype2 = subproject('freetype2').get_variable('freetype_dep')
+
+assimp = subproject('assimp').get_variable('assimp_dep')
+
+dependencies += [
+  glfw3, fuc2, fmt, glm, assimp, json, freetype2
+]
+
+inc_dirs = ['src']
+
+sources = [
+  'src/glad/glad.cpp',
+  'src/dbc.cpp',
+  'src/stb_image.cpp',
+  'src/shader.cpp',
+  'src/mesh.cpp',
+  'src/utils.cpp',
+  'src/model.cpp',
+  'src/scene.cpp',
+  'src/camera.cpp',
+  'src/framebuffer.cpp',
+  'src/shadows.cpp',
+  'src/screen.cpp',
+  'src/text.cpp',
+  'src/bone.cpp',
+  'src/animation.cpp',
+  'src/animator.cpp',
+]
+
+subdir('tests')
+
+executable('fuc2it', sources + fuc2_tests,
+  cpp_args: cpp_args,
+  link_args: link_args,
+  include_directories: inc_dirs,
+  override_options: exe_defaults,
+  dependencies: dependencies + [fuc2])
+
+executable('hellogl',
+  sources + [ 'src/main.cpp' ],
+  cpp_args: cpp_args,
+  include_directories: inc_dirs,
+  link_args: link_args,
+  override_options: exe_defaults,
+  dependencies: dependencies)

53-final-cleanup/scripts/reset_build.ps1

@@ -0,0 +1,7 @@
+mv .\subprojects\packagecache .
+rm -recurse -force .\subprojects\,.\builddir\
+mkdir subprojects
+mv .\packagecache .\subprojects\
+mkdir builddir
+cp wraps\*.wrap subprojects\
+meson setup --default-library=static --prefer-static  builddir

53-final-cleanup/scripts/reset_build.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+mv -f ./subprojects/packagecache .
+rm -rf subprojects builddir
+mkdir subprojects
+mv -f packagecache ./subprojects/ && true
+mkdir builddir
+cp wraps/*.wrap subprojects/
+# on OSX you can't do this with static
+meson setup --default-library=static --prefer-static  builddir

53-final-cleanup/scripts/setup.ps1

@@ -0,0 +1,4 @@
+mkdir builddir
+mkdir subprojects
+cp wraps/*.wrap subprojects
+meson setup -Ddefault_library=static builddir

53-final-cleanup/scripts/setup.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -ex
+
+mkdir subprojects
+mkdir builddir
+cp wraps/*.wrap subprojects/
+meson setup builddir

53-final-cleanup/scripts/watch_build.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -e
+
+fswatch -o *.cpp | while read num
+do echo ">>>>>>>>>>>>>>>>>>>>>> `date`"
+  if meson compile -C builddir
+  then
+    ./builddir/sfmldemo
+  else
+    echo "^^^^^^^^^^^^^^^^^^^^^ ERROR `date`"
+  fi
+done

53-final-cleanup/scripts/windows_setup.ps1

@@ -0,0 +1,255 @@
+function Test-WinUtilPackageManager {
+    <#
+
+    .SYNOPSIS
+        Checks if Winget and/or Choco are installed
+
+    .PARAMETER winget
+        Check if Winget is installed
+
+    .PARAMETER choco
+        Check if Chocolatey is installed
+
+    #>
+
+    Param(
+        [System.Management.Automation.SwitchParameter]$winget,
+        [System.Management.Automation.SwitchParameter]$choco
+    )
+
+    $status = "not-installed"
+
+    if ($winget) {
+        # Check if Winget is available while getting it's Version if it's available
+        $wingetExists = $true
+        try {
+            $wingetVersionFull = winget --version
+        } catch [System.Management.Automation.CommandNotFoundException], [System.Management.Automation.ApplicationFailedException] {
+            Write-Warning "Winget was not found due to un-availablity reasons"
+            $wingetExists = $false
+        } catch {
+            Write-Warning "Winget was not found due to un-known reasons, The Stack Trace is:`n$($psitem.Exception.StackTrace)"
+            $wingetExists = $false
+	}
+
+        # If Winget is available, Parse it's Version and give proper information to Terminal Output.
+	# If it isn't available, the return of this funtion will be "not-installed", indicating that
+        # Winget isn't installed/available on The System.
+	if ($wingetExists) {
+            # Check if Preview Version
+            if ($wingetVersionFull.Contains("-preview")) {
+                $wingetVersion = $wingetVersionFull.Trim("-preview")
+                $wingetPreview = $true
+            } else {
+                $wingetVersion = $wingetVersionFull
+                $wingetPreview = $false
+            }
+
+            # Check if Winget's Version is too old.
+            $wingetCurrentVersion = [System.Version]::Parse($wingetVersion.Trim('v'))
+            # Grabs the latest release of Winget from the Github API for version check process.
+            $response = Invoke-RestMethod -Uri "https://api.github.com/repos/microsoft/Winget-cli/releases/latest" -Method Get -ErrorAction Stop
+            $wingetLatestVersion = [System.Version]::Parse(($response.tag_name).Trim('v')) #Stores version number of latest release.
+            $wingetOutdated = $wingetCurrentVersion -lt $wingetLatestVersion
+            Write-Host "===========================================" -ForegroundColor Green
+            Write-Host "---        Winget is installed          ---" -ForegroundColor Green
+            Write-Host "===========================================" -ForegroundColor Green
+            Write-Host "Version: $wingetVersionFull" -ForegroundColor White
+
+            if (!$wingetPreview) {
+                Write-Host "    - Winget is a release version." -ForegroundColor Green
+            } else {
+                Write-Host "    - Winget is a preview version. Unexpected problems may occur." -ForegroundColor Yellow
+            }
+
+            if (!$wingetOutdated) {
+                Write-Host "    - Winget is Up to Date" -ForegroundColor Green
+                $status = "installed"
+            }
+            else {
+                Write-Host "    - Winget is Out of Date" -ForegroundColor Red
+                $status = "outdated"
+            }
+        } else {
+            Write-Host "===========================================" -ForegroundColor Red
+            Write-Host "---      Winget is not installed        ---" -ForegroundColor Red
+            Write-Host "===========================================" -ForegroundColor Red
+            $status = "not-installed"
+        }
+    }
+
+    if ($choco) {
+        if ((Get-Command -Name choco -ErrorAction Ignore) -and ($chocoVersion = (Get-Item "$env:ChocolateyInstall\choco.exe" -ErrorAction Ignore).VersionInfo.ProductVersion)) {
+            Write-Host "===========================================" -ForegroundColor Green
+            Write-Host "---      Chocolatey is installed        ---" -ForegroundColor Green
+            Write-Host "===========================================" -ForegroundColor Green
+            Write-Host "Version: v$chocoVersion" -ForegroundColor White
+            $status = "installed"
+        } else {
+            Write-Host "===========================================" -ForegroundColor Red
+            Write-Host "---    Chocolatey is not installed      ---" -ForegroundColor Red
+            Write-Host "===========================================" -ForegroundColor Red
+            $status = "not-installed"
+        }
+    }
+
+    return $status
+}
+
+function Get-WinUtilWingetPrerequisites {
+    <#
+    .SYNOPSIS
+        Downloads the Winget Prereqs.
+    .DESCRIPTION
+        Downloads Prereqs for Winget. Version numbers are coded as variables and can be updated as uncommonly as Microsoft updates the prereqs.
+    #>
+
+    # I don't know of a way to detect the prereqs automatically, so if someone has a better way of defining these, that would be great.
+    # Microsoft.VCLibs version rarely changes, but for future compatibility I made it a variable.
+    $versionVCLibs = "14.00"
+    $fileVCLibs = "https://aka.ms/Microsoft.VCLibs.x64.${versionVCLibs}.Desktop.appx"
+    # Write-Host "$fileVCLibs"
+    # Microsoft.UI.Xaml version changed recently, so I made the version numbers variables.
+    $versionUIXamlMinor = "2.8"
+    $versionUIXamlPatch = "2.8.6"
+    $fileUIXaml = "https://github.com/microsoft/microsoft-ui-xaml/releases/download/v${versionUIXamlPatch}/Microsoft.UI.Xaml.${versionUIXamlMinor}.x64.appx"
+    # Write-Host "$fileUIXaml"
+
+    Try{
+        Write-Host "Downloading Microsoft.VCLibs Dependency..."
+        Invoke-WebRequest -Uri $fileVCLibs -OutFile $ENV:TEMP\Microsoft.VCLibs.x64.Desktop.appx
+        Write-Host "Downloading Microsoft.UI.Xaml Dependency...`n"
+        Invoke-WebRequest -Uri $fileUIXaml -OutFile $ENV:TEMP\Microsoft.UI.Xaml.x64.appx
+    }
+    Catch{
+        throw [WingetFailedInstall]::new('Failed to install prerequsites')
+    }
+}
+
+function Get-WinUtilWingetLatest {
+    <#
+    .SYNOPSIS
+        Uses GitHub API to check for the latest release of Winget.
+    .DESCRIPTION
+        This function grabs the latest version of Winget and returns the download path to Install-WinUtilWinget for installation.
+    #>
+    # Invoke-WebRequest is notoriously slow when the byte progress is displayed. The following lines disable the progress bar and reset them at the end of the function
+    $PreviousProgressPreference = $ProgressPreference
+    $ProgressPreference = "silentlyContinue"
+    Try{
+        # Grabs the latest release of Winget from the Github API for the install process.
+        $response = Invoke-RestMethod -Uri "https://api.github.com/repos/microsoft/Winget-cli/releases/latest" -Method Get -ErrorAction Stop
+        $latestVersion = $response.tag_name #Stores version number of latest release.
+        $licenseWingetUrl = $response.assets.browser_download_url | Where-Object {$_ -like "*License1.xml"} #Index value for License file.
+        Write-Host "Latest Version:`t$($latestVersion)`n"
+        Write-Host "Downloading..."
+        $assetUrl = $response.assets.browser_download_url | Where-Object {$_ -like "*Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle"}
+        Invoke-WebRequest -Uri $licenseWingetUrl -OutFile $ENV:TEMP\License1.xml
+        # The only pain is that the msixbundle for winget-cli is 246MB. In some situations this can take a bit, with slower connections.
+        Invoke-WebRequest -Uri $assetUrl -OutFile $ENV:TEMP\Microsoft.DesktopAppInstaller.msixbundle
+    }
+    Catch{
+        throw [WingetFailedInstall]::new('Failed to get latest Winget release and license')
+    }
+    $ProgressPreference = $PreviousProgressPreference
+}
+
+function Install-WinUtilWinget {
+    <#
+
+    .SYNOPSIS
+        Installs Winget if it is not already installed.
+
+    .DESCRIPTION
+        This function will download the latest version of Winget and install it. If Winget is already installed, it will do nothing.
+    #>
+    $isWingetInstalled = Test-WinUtilPackageManager -winget
+
+    Try {
+        if ($isWingetInstalled -eq "installed") {
+            Write-Host "`nWinget is already installed.`r" -ForegroundColor Green
+            return
+        } elseif ($isWingetInstalled -eq "outdated") {
+            Write-Host "`nWinget is Outdated. Continuing with install.`r" -ForegroundColor Yellow
+        } else {
+            Write-Host "`nWinget is not Installed. Continuing with install.`r" -ForegroundColor Red
+        }
+
+        # Gets the computer's information
+        if ($null -eq $sync.ComputerInfo){
+            $ComputerInfo = Get-ComputerInfo -ErrorAction Stop
+        } else {
+            $ComputerInfo = $sync.ComputerInfo
+        }
+
+        if (($ComputerInfo.WindowsVersion) -lt "1809") {
+            # Checks if Windows Version is too old for Winget
+            Write-Host "Winget is not supported on this version of Windows (Pre-1809)" -ForegroundColor Red
+            return
+        }
+
+        # Install Winget via GitHub method.
+        # Used part of my own script with some modification: ruxunderscore/windows-initialization
+        Write-Host "Downloading Winget Prerequsites`n"
+        Get-WinUtilWingetPrerequisites
+        Write-Host "Downloading Winget and License File`r"
+        Get-WinUtilWingetLatest
+        Write-Host "Installing Winget w/ Prerequsites`r"
+        Add-AppxProvisionedPackage -Online -PackagePath $ENV:TEMP\Microsoft.DesktopAppInstaller.msixbundle -DependencyPackagePath $ENV:TEMP\Microsoft.VCLibs.x64.Desktop.appx, $ENV:TEMP\Microsoft.UI.Xaml.x64.appx -LicensePath $ENV:TEMP\License1.xml
+		Write-Host "Manually adding Winget Sources, from Winget CDN."
+		Add-AppxPackage -Path https://cdn.winget.microsoft.com/cache/source.msix #Seems some installs of Winget don't add the repo source, this should makes sure that it's installed every time.
+        Write-Host "Winget Installed" -ForegroundColor Green
+        Write-Host "Enabling NuGet and Module..."
+        Install-PackageProvider -Name NuGet -Force
+        Install-Module -Name Microsoft.WinGet.Client -Force
+        # Winget only needs a refresh of the environment variables to be used.
+        Write-Output "Refreshing Environment Variables...`n"
+        $ENV:PATH = [System.Environment]::GetEnvironmentVariable("Path", "Machine") + ";" + [System.Environment]::GetEnvironmentVariable("Path", "User")
+    } Catch {
+        Write-Host "Failure detected while installing via GitHub method. Continuing with Chocolatey method as fallback." -ForegroundColor Red
+        # In case install fails via GitHub method.
+        Try {
+        # Install Choco if not already present
+        Install-WinUtilChoco
+        Start-Process -Verb runas -FilePath powershell.exe -ArgumentList "choco install winget-cli"
+        Write-Host "Winget Installed" -ForegroundColor Green
+        Write-Output "Refreshing Environment Variables...`n"
+        $ENV:PATH = [System.Environment]::GetEnvironmentVariable("Path", "Machine") + ";" + [System.Environment]::GetEnvironmentVariable("Path", "User")
+        } Catch {
+            throw [WingetFailedInstall]::new('Failed to install!')
+        }
+    }
+}
+
+
+$isAdmin = [System.Security.Principal.WindowsPrincipal]::new(
+    [System.Security.Principal.WindowsIdentity]::GetCurrent()).
+        IsInRole('Administrators')
+
+if(-not $isAdmin) {
+  $params = @{
+      FilePath     = 'powershell' # or pwsh if Core
+      Verb         = 'RunAs'
+      ArgumentList = @(
+          '-ExecutionPolicy ByPass'
+          '-File "{0}"' -f $PSCommandPath
+      )
+  }
+
+  Start-Process -Wait @params
+  Write-Host "Admin stuff done..."
+} else {
+  Write-Host "In Admin stuff..."
+  Install-WinUtilWinget
+  return
+}
+
+Start-Process -NoNewWindow -Wait winget -ArgumentList 'install','chocolatey'
+Start-Process -NoNewWindow -Wait winget -ArgumentList 'install','Git.Git'
+Start-Process -NoNewWindow -Wait winget -ArgumentList 'install','Microsoft.WindowsTerminal'
+Start-Process -NoNewWindow -Wait winget -ArgumentList 'install','Python.Python.3.12'
+Start-Process -NoNewWindow -Wait winget -ArgumentList 'install','AntibodySoftware.WizFile'
+Start-Process -NoNewWindow -Wait winget -ArgumentList 'install','Kitware.CMake'
+Start-Process -NoNewWindow -Wait winget -ArgumentList 'install','Microsoft.VCRedist.2015+.x64'
+
+Start-Process -Verb RunAs -Wait powershell -argumentlist 'C:\ProgramData\chocolatey\bin\choco.exe','install','geany','geany-plugins','winlibs','conan','meson'

53-final-cleanup/shaders/08-frag.glsl

@@ -0,0 +1,43 @@
+#version 330 core
+struct Material {
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float shininess;
+};
+
+struct Light {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+uniform Light light;
+
+uniform Material material;
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+
+uniform vec3 viewPos;
+
+void main()
+{
+  vec3 ambient = light.ambient * material.ambient;
+
+  vec3 norm = normalize(Normal);
+  vec3 lightDir = normalize(light.position - FragPos);
+  float diff = max(dot(norm, lightDir), 0.0);
+  vec3 diffuse = light.diffuse * (diff * material.diffuse);
+
+  vec3 viewDir = normalize(viewPos - FragPos);
+  vec3 reflectDir = reflect(-lightDir, norm);
+
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+  vec3 specular = light.specular * (material.specular * spec);
+
+  vec3 result = ambient + diffuse + specular;
+
+  FragColor = vec4(result, 1.0);
+}

53-final-cleanup/shaders/08-lightsource.frag.glsl

@@ -0,0 +1,16 @@
+#version 330 core
+out vec4 FragColor;
+
+struct Light {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+uniform Light light;
+
+void main()
+{
+    FragColor = vec4(light.diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/08-vert.glsl

@@ -0,0 +1,17 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+
+out vec3 FragPos;
+out vec3 Normal;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+}

53-final-cleanup/shaders/10.1.instancing.fs

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 fColor;
+
+void main()
+{
+    FragColor = vec4(fColor, 1.0);
+}

53-final-cleanup/shaders/10.1.instancing.vs

@@ -0,0 +1,12 @@
+#version 330 core
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec3 aColor;
+layout (location = 2) in vec2 aOffset;
+
+out vec3 fColor;
+
+void main()
+{
+    fColor = aColor;
+    gl_Position = vec4(aPos + aOffset, 0.0, 1.0);
+}

53-final-cleanup/shaders/11-frag.glsl

@@ -0,0 +1,46 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+struct Light {
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Light light;
+uniform Material material;
+
+void main()
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+
+  vec3 ambient = light.ambient * mat_tex;
+
+  vec3 norm = normalize(Normal);
+  vec3 lightDir = normalize(light.position - FragPos);
+  float diff = max(dot(norm, lightDir), 0.0);
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+
+  vec3 viewDir = normalize(viewPos - FragPos);
+  vec3 reflectDir = reflect(-lightDir, norm);
+
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec3 specular = light.specular * spec * spec_tex;
+
+  vec3 result = ambient + diffuse + specular;
+
+  FragColor = vec4(result, 1.0);
+}

53-final-cleanup/shaders/11-lightsource.frag.glsl

@@ -0,0 +1,16 @@
+#version 330 core
+out vec4 FragColor;
+
+struct Light {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+uniform Light light;
+
+void main()
+{
+    FragColor = vec4(light.diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/11-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/12-frag.glsl

@@ -0,0 +1,67 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+struct Light {
+  vec3 direction;
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+
+  float constant;
+  float linear;
+  float quadratic;
+  float cutOff;
+  float outerCutOff;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Light light;
+uniform Material material;
+
+void main()
+{
+  vec3 lightDir = normalize(light.position - FragPos);
+
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 ambient = light.ambient * mat_tex;
+
+  vec3 norm = normalize(Normal);
+  float diff = max(dot(norm, lightDir), 0.0);
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+
+  vec3 viewDir = normalize(viewPos - FragPos);
+  vec3 reflectDir = reflect(-lightDir, norm);
+
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec3 specular = light.specular * spec * spec_tex;
+
+  // splotlight
+  float theta = dot(lightDir, normalize(-light.direction));
+  float epsilon = light.cutOff - light.outerCutOff;
+  float intensity = clamp((theta - light.outerCutOff) / epsilon, 0.0, 1.0);
+  diffuse *= intensity;
+  specular *= intensity;
+
+  // determine attenuation based on light distance
+  float distance = length(light.position - FragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  vec3 result = ambient + diffuse + specular;
+  FragColor = vec4(result, 1.0);
+}

53-final-cleanup/shaders/12-lightsource.frag.glsl

@@ -0,0 +1,16 @@
+#version 330 core
+out vec4 FragColor;
+
+struct Light {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+uniform Light light;
+
+void main()
+{
+    FragColor = vec4(light.diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/12-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/13-frag.glsl

@@ -0,0 +1,150 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Material material;
+
+struct DirLight {
+  vec3 direction;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+struct PointLight {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float constant;
+  float linear;
+  float quadratic;
+};
+
+struct SpotLight {
+  vec3 direction;
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+
+  float constant;
+  float linear;
+  float quadratic;
+  float cutOff;
+  float outerCutOff;
+};
+
+
+#define NR_POINT_LIGHTS 4
+uniform int pointLightCount;
+uniform PointLight pointLights[NR_POINT_LIGHTS];
+uniform DirLight dirLight;
+uniform SpotLight spotLight;
+
+vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+
+  vec3 lightDir = normalize(-light.direction);
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcPointLight(PointLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcSpotLight(SpotLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  float theta = dot(lightDir, normalize(-light.direction));
+  float epsilon = light.cutOff - light.outerCutOff;
+  float intensity = clamp((theta - light.outerCutOff) / epsilon, 0.0, 1.0);
+  diffuse *= intensity;
+  specular *= intensity;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+void main()
+{
+  vec3 norm = normalize(Normal);
+  vec3 viewDir = normalize(viewPos - FragPos);
+
+  vec3 result = CalcDirLight(dirLight, norm, viewDir);
+
+  for(int i = 0; i < pointLightCount; i++) {
+    result += CalcPointLight(pointLights[i], norm, FragPos, viewDir);
+  }
+
+  result += CalcSpotLight(spotLight, norm, FragPos, viewDir);
+
+  FragColor = vec4(result, 1.0);
+}

53-final-cleanup/shaders/13-lightsource.frag.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 diffuse;
+
+void main()
+{
+    FragColor = vec4(diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/13-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/14-frag.glsl

@@ -0,0 +1,150 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Material material;
+
+struct DirLight {
+  vec3 direction;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+struct PointLight {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float constant;
+  float linear;
+  float quadratic;
+};
+
+struct SpotLight {
+  vec3 direction;
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+
+  float constant;
+  float linear;
+  float quadratic;
+  float cutOff;
+  float outerCutOff;
+};
+
+
+#define NR_POINT_LIGHTS 4
+uniform int pointLightCount;
+uniform PointLight pointLights[NR_POINT_LIGHTS];
+uniform DirLight dirLight;
+uniform SpotLight spotLight;
+
+vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+
+  vec3 lightDir = normalize(-light.direction);
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcPointLight(PointLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcSpotLight(SpotLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  float theta = dot(lightDir, normalize(-light.direction));
+  float epsilon = light.cutOff - light.outerCutOff;
+  float intensity = clamp((theta - light.outerCutOff) / epsilon, 0.0, 1.0);
+  diffuse *= intensity;
+  specular *= intensity;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+void main()
+{
+  vec3 norm = normalize(Normal);
+  vec3 viewDir = normalize(viewPos - FragPos);
+
+  vec3 result = CalcDirLight(dirLight, norm, viewDir);
+
+  for(int i = 0; i < pointLightCount; i++) {
+    result += CalcPointLight(pointLights[i], norm, FragPos, viewDir);
+  }
+
+  result += CalcSpotLight(spotLight, norm, FragPos, viewDir);
+
+  FragColor = vec4(result, 1.0);
+}

53-final-cleanup/shaders/14-lightsource.frag.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 diffuse;
+
+void main()
+{
+    FragColor = vec4(diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/14-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/16-frag.glsl

@@ -0,0 +1,162 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Material material;
+
+struct DirLight {
+  vec3 direction;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+struct PointLight {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float constant;
+  float linear;
+  float quadratic;
+};
+
+struct SpotLight {
+  vec3 direction;
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+
+  float constant;
+  float linear;
+  float quadratic;
+  float cut_off;
+  float outer_cut_off;
+};
+
+
+#define MAX_LIGHTS 4
+uniform int pointLightCount = 0;
+uniform PointLight pointLights[MAX_LIGHTS];
+
+uniform int dirLightCount = 0;
+uniform DirLight dirLights[MAX_LIGHTS];
+
+uniform int spotLightCount = 0;
+uniform SpotLight spotLights[MAX_LIGHTS];
+
+vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+
+  vec3 lightDir = normalize(-light.direction);
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcPointLight(PointLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcSpotLight(SpotLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  float theta = dot(lightDir, normalize(-light.direction));
+  float epsilon = light.cut_off - light.outer_cut_off;
+  float intensity = clamp((theta - light.outer_cut_off) / epsilon, 0.0, 1.0);
+  diffuse *= intensity;
+  specular *= intensity;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+void main()
+{
+  vec3 norm = normalize(Normal);
+  vec3 viewDir = normalize(viewPos - FragPos);
+
+  // kick it off with the first dirlight
+  vec3 result = CalcDirLight(dirLights[0], norm, viewDir);
+
+  // then augment with more (off by one)
+  for(int i = 1; i < dirLightCount; i++) {
+    result += CalcDirLight(dirLights[i], norm, viewDir);
+  }
+
+  for(int i = 0; i < pointLightCount; i++) {
+    result += CalcPointLight(pointLights[i], norm, FragPos, viewDir);
+  }
+
+  for(int i = 0; i < spotLightCount; i++) {
+    result += CalcSpotLight(spotLights[i], norm, FragPos, viewDir);
+  }
+
+  FragColor = vec4(result, 1.0);
+}

53-final-cleanup/shaders/16-lightsource.frag.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 diffuse;
+
+void main()
+{
+    FragColor = vec4(diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/16-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/17-frag.glsl

@@ -0,0 +1,162 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Material material;
+
+struct DirLight {
+  vec3 direction;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+struct PointLight {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float constant;
+  float linear;
+  float quadratic;
+};
+
+struct SpotLight {
+  vec3 direction;
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+
+  float constant;
+  float linear;
+  float quadratic;
+  float cut_off;
+  float outer_cut_off;
+};
+
+
+#define MAX_LIGHTS 4
+uniform int pointLightCount = 0;
+uniform PointLight pointLights[MAX_LIGHTS];
+
+uniform int dirLightCount = 0;
+uniform DirLight dirLights[MAX_LIGHTS];
+
+uniform int spotLightCount = 0;
+uniform SpotLight spotLights[MAX_LIGHTS];
+
+vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+
+  vec3 lightDir = normalize(-light.direction);
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcPointLight(PointLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcSpotLight(SpotLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  float theta = dot(lightDir, normalize(-light.direction));
+  float epsilon = light.cut_off - light.outer_cut_off;
+  float intensity = clamp((theta - light.outer_cut_off) / epsilon, 0.0, 1.0);
+  diffuse *= intensity;
+  specular *= intensity;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+void main()
+{
+  vec3 norm = normalize(Normal);
+  vec3 viewDir = normalize(viewPos - FragPos);
+
+  // kick it off with the first dirlight
+  vec3 result = CalcDirLight(dirLights[0], norm, viewDir);
+
+  // then augment with more (off by one)
+  for(int i = 1; i < dirLightCount; i++) {
+    result += CalcDirLight(dirLights[i], norm, viewDir);
+  }
+
+  for(int i = 0; i < pointLightCount; i++) {
+    result += CalcPointLight(pointLights[i], norm, FragPos, viewDir);
+  }
+
+  for(int i = 0; i < spotLightCount; i++) {
+    result += CalcSpotLight(spotLights[i], norm, FragPos, viewDir);
+  }
+
+  FragColor = vec4(result, 1.0);
+}

53-final-cleanup/shaders/17-lightsource.frag.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 diffuse;
+
+void main()
+{
+    FragColor = vec4(diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/17-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/18-frag.glsl

@@ -0,0 +1,176 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Material material;
+
+struct DirLight {
+  vec3 direction;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+struct PointLight {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float constant;
+  float linear;
+  float quadratic;
+};
+
+struct SpotLight {
+  vec3 direction;
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+
+  float constant;
+  float linear;
+  float quadratic;
+  float cut_off;
+  float outer_cut_off;
+};
+
+
+#define MAX_LIGHTS 4
+uniform int pointLightCount = 0;
+uniform PointLight pointLights[MAX_LIGHTS];
+
+uniform int dirLightCount = 0;
+uniform DirLight dirLights[MAX_LIGHTS];
+
+uniform int spotLightCount = 0;
+uniform SpotLight spotLights[MAX_LIGHTS];
+
+
+float near = 0.1;
+float far = 100.0;
+
+vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+
+  vec3 lightDir = normalize(-light.direction);
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcPointLight(PointLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+vec3 CalcSpotLight(SpotLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 mat_tex = vec3(texture(material.diffuse, TexCoords));
+  vec3 spec_tex = vec3(texture(material.specular, TexCoords));
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec3 ambient = light.ambient * mat_tex;
+  vec3 diffuse = light.diffuse * diff * mat_tex;
+  vec3 specular = light.specular * spec * spec_tex;
+
+  float theta = dot(lightDir, normalize(-light.direction));
+  float epsilon = light.cut_off - light.outer_cut_off;
+  float intensity = clamp((theta - light.outer_cut_off) / epsilon, 0.0, 1.0);
+  diffuse *= intensity;
+  specular *= intensity;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+float LinearizeDepth(float depth)
+{
+  float ndc = depth * 2.0 - 1.0;
+  return (2.0 * near * far) / (far + near - ndc * (far - near));
+}
+
+
+void main()
+{
+  vec3 norm = normalize(Normal);
+  vec3 viewDir = normalize(viewPos - FragPos);
+
+  // kick it off with the first dirlight
+  vec3 result = CalcDirLight(dirLights[0], norm, viewDir);
+
+  // then augment with more (off by one)
+  for(int i = 1; i < dirLightCount; i++) {
+    result += CalcDirLight(dirLights[i], norm, viewDir);
+  }
+
+  for(int i = 0; i < pointLightCount; i++) {
+    result += CalcPointLight(pointLights[i], norm, FragPos, viewDir);
+  }
+
+  for(int i = 0; i < spotLightCount; i++) {
+    result += CalcSpotLight(spotLights[i], norm, FragPos, viewDir);
+  }
+
+  FragColor = vec4(result, 1.0);
+
+  // float depth = LinearizeDepth(gl_FragCoord.z) / far;
+  // FragColor = vec4(vec3(depth), 1.0);
+}

53-final-cleanup/shaders/18-lightsource.frag.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 diffuse;
+
+void main()
+{
+    FragColor = vec4(diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/18-outline.glsl

@@ -0,0 +1,6 @@
+#version 330 core
+out vec4 FragColor;
+
+void main() {
+  FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+}

53-final-cleanup/shaders/18-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/19-frag.glsl

@@ -0,0 +1,168 @@
+#version 330 core
+struct Material {
+  sampler2D diffuse;
+  sampler2D specular;
+  float shininess;
+};
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+
+uniform vec3 viewPos;
+uniform Material material;
+
+struct DirLight {
+  vec3 direction;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+};
+
+struct PointLight {
+  vec3 position;
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float constant;
+  float linear;
+  float quadratic;
+};
+
+struct SpotLight {
+  vec3 direction;
+  vec3 position;
+  vec3 diffuse;
+  vec3 specular;
+  vec3 ambient;
+
+  float constant;
+  float linear;
+  float quadratic;
+  float cut_off;
+  float outer_cut_off;
+};
+
+
+#define MAX_LIGHTS 4
+uniform int pointLightCount = 0;
+uniform PointLight pointLights[MAX_LIGHTS];
+
+uniform int dirLightCount = 0;
+uniform DirLight dirLights[MAX_LIGHTS];
+
+uniform int spotLightCount = 0;
+uniform SpotLight spotLights[MAX_LIGHTS];
+
+
+float near = 0.1;
+float far = 100.0;
+
+vec4 CalcDirLight(vec4 mat_tex, vec4 spec_tex, DirLight light, vec3 normal, vec3 viewDir)
+{
+  vec3 lightDir = normalize(-light.direction);
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  vec4 ambient = vec4(light.ambient, 1.0) * mat_tex;
+  vec4 diffuse = vec4(light.diffuse, 1.0) * diff * mat_tex;
+  vec4 specular = vec4(light.specular, 1.0) * spec * spec_tex;
+
+  return ambient + diffuse + specular;
+}
+
+vec4 CalcPointLight(vec4 mat_tex, vec4 spec_tex, PointLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec4 ambient = vec4(light.ambient, 1.0) * mat_tex;
+  vec4 diffuse = vec4(light.diffuse, 1.0) * diff * mat_tex;
+  vec4 specular = vec4(light.specular, 1.0) * spec * spec_tex;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+vec4 CalcSpotLight(vec4 mat_tex, vec4 spec_tex, SpotLight light, vec3 normal, vec3 fragPos, vec3 viewDir)
+{
+  vec3 lightDir = normalize(light.position - fragPos);
+
+  // diffuse shading
+  float diff = max(dot(normal, lightDir), 0.0);
+
+  // specular shading
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+  // attenuation
+  float distance = length(light.position - fragPos);
+  float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
+
+  vec4 ambient = vec4(light.ambient, 1.0) * mat_tex;
+  vec4 diffuse = vec4(light.diffuse, 1.0) * diff * mat_tex;
+  vec4 specular = vec4(light.specular, 1.0) * spec * spec_tex;
+
+  float theta = dot(lightDir, normalize(-light.direction));
+  float epsilon = light.cut_off - light.outer_cut_off;
+  float intensity = clamp((theta - light.outer_cut_off) / epsilon, 0.0, 1.0);
+  diffuse *= intensity;
+  specular *= intensity;
+
+  ambient *= attenuation;
+  diffuse *= attenuation;
+  specular *= attenuation;
+
+  return ambient + diffuse + specular;
+}
+
+float LinearizeDepth(float depth)
+{
+  float ndc = depth * 2.0 - 1.0;
+  return (2.0 * near * far) / (far + near - ndc * (far - near));
+}
+
+void main()
+{
+  vec4 mat_tex = texture(material.diffuse, TexCoords);
+  vec4 spec_tex = texture(material.specular, TexCoords);
+
+  vec3 norm = normalize(Normal);
+  vec3 viewDir = normalize(viewPos - FragPos);
+
+  // kick it off with the first dirlight
+  vec4 result = CalcDirLight(mat_tex, spec_tex, dirLights[0], norm, viewDir);
+
+  // then augment with more (off by one)
+  for(int i = 1; i < dirLightCount; i++) {
+    result += CalcDirLight(mat_tex, spec_tex, dirLights[i], norm, viewDir);
+  }
+
+  for(int i = 0; i < pointLightCount; i++) {
+    result += CalcPointLight(mat_tex, spec_tex, pointLights[i], norm, FragPos, viewDir);
+  }
+
+  for(int i = 0; i < spotLightCount; i++) {
+    result += CalcSpotLight(mat_tex, spec_tex, spotLights[i], norm, FragPos, viewDir);
+  }
+
+  FragColor = result;
+}

53-final-cleanup/shaders/19-lightsource.frag.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 diffuse;
+
+void main()
+{
+    FragColor = vec4(diffuse, 1.0); // set all 4 vector values to 1.0
+}

53-final-cleanup/shaders/19-vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/21-framebuffers.frag.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D texture1;
+
+void main()
+{
+    FragColor = texture(texture1, TexCoords);
+}

53-final-cleanup/shaders/21-framebuffers.vert.glsl

@@ -0,0 +1,20 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/21-screen-kernel.frag.glsl

@@ -0,0 +1,38 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+
+const float offset = 1.0 / 300.0;
+
+void main()
+{
+  vec2 offsets[9] = vec2[](
+      vec2(-offset,  offset), // top-left
+      vec2( 0.0f,    offset), // top-center
+      vec2( offset,  offset), // top-right
+      vec2(-offset,  0.0f),   // center-left
+      vec2( 0.0f,    0.0f),   // center-center
+      vec2( offset,  0.0f),   // center-right
+      vec2(-offset, -offset), // bottom-left
+      vec2( 0.0f,   -offset), // bottom-center
+      vec2( offset, -offset)  // bottom-right
+      );
+
+  float kernel[9] = float[](
+      1.0 / 16, 2.0 / 16, 1.0 / 16,
+      2.0 / 16, 4.0 / 16, 2.0 / 16,
+      1.0 / 16, 2.0 / 16, 1.0 / 16
+  );
+
+  vec3 col = vec3(0.0);
+
+  for(int i = 0; i < 9; i++) {
+    vec3 sampleTex = vec3(texture(screenTexture, TexCoords.st + offsets[i]));
+    col += sampleTex * kernel[i];
+  }
+
+  FragColor = vec4(col, 1.0);
+}

53-final-cleanup/shaders/21-screen.frag.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+
+void main()
+{
+    FragColor = texture(screenTexture, TexCoords);
+}

53-final-cleanup/shaders/21-screen.vert.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/24-frag.glsl

@@ -0,0 +1,17 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 Normal;
+in vec3 FragPos;
+in vec2 TexCoords;
+
+uniform vec3 cameraPos;
+uniform samplerCube skybox;
+
+void main()
+{
+  float ratio = 1.0/1.52;
+  vec3 I = normalize(FragPos - cameraPos);
+  vec3 R = refract(I, normalize(Normal), ratio);
+  FragColor = vec4(texture(skybox, R).rgb, 1.0);
+}

53-final-cleanup/shaders/24-skybox.frag.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 TexCoords;
+
+uniform samplerCube skybox;
+
+void main()
+{
+    FragColor = texture(skybox, TexCoords);
+}

53-final-cleanup/shaders/24-skybox.vert.glsl

@@ -0,0 +1,14 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+
+out vec3 TexCoords;
+
+uniform mat4 projection;
+uniform mat4 view;
+
+void main()
+{
+    TexCoords = aPos;
+    vec4 pos = projection * view * vec4(aPos, 1.0);
+    gl_Position = pos.xyww;
+}

53-final-cleanup/shaders/24-vert.glsl

@@ -0,0 +1,21 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+out vec3 Position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+  Normal = mat3(transpose(inverse(model))) * aNormal;
+  FragPos = vec3(model * vec4(aPos, 1.0));
+  gl_Position = projection * view * vec4(FragPos, 1.0);
+  TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/26-frag.glsl

@@ -0,0 +1,17 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 Normal;
+in vec3 FragPos;
+in vec2 TexCoords;
+
+uniform vec3 cameraPos;
+uniform samplerCube skybox;
+
+void main()
+{
+  float ratio = 1.0/1.52;
+  vec3 I = normalize(FragPos - cameraPos);
+  vec3 R = refract(I, normalize(Normal), ratio);
+  FragColor = vec4(texture(skybox, R).rgb, 1.0);
+}

53-final-cleanup/shaders/26-framebuffers.frag.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D texture1;
+
+void main()
+{
+  FragColor = texture(texture1, TexCoords);
+}

53-final-cleanup/shaders/26-framebuffers.vert.glsl

@@ -0,0 +1,23 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+
+out VS_OUT {
+    vec2 texCoords;
+} vs_out;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    vs_out.texCoords = aTexCoords;
+}

53-final-cleanup/shaders/26-geometry.glsl

@@ -0,0 +1,40 @@
+#version 330 core
+layout (triangles) in;
+layout (triangle_strip, max_vertices = 3) out;
+
+in VS_OUT {
+    vec2 texCoords;
+} gs_in[];
+
+out vec2 TexCoords;
+
+uniform float time;
+
+vec4 explode(vec4 position, vec3 normal)
+{
+    float magnitude = 2.0;
+    vec3 direction = normal * ((sin(time) + 1.0) / 2.0) * magnitude;
+    return position + vec4(direction, 0.0);
+}
+
+vec3 GetNormal()
+{
+    vec3 a = vec3(gl_in[0].gl_Position) - vec3(gl_in[1].gl_Position);
+    vec3 b = vec3(gl_in[2].gl_Position) - vec3(gl_in[1].gl_Position);
+    return normalize(cross(a, b));
+}
+
+void main() {
+    vec3 normal = GetNormal();
+
+    gl_Position = explode(gl_in[0].gl_Position, normal);
+    TexCoords = gs_in[0].texCoords;
+    EmitVertex();
+    gl_Position = explode(gl_in[1].gl_Position, normal);
+    TexCoords = gs_in[1].texCoords;
+    EmitVertex();
+    gl_Position = explode(gl_in[2].gl_Position, normal);
+    TexCoords = gs_in[2].texCoords;
+    EmitVertex();
+    EndPrimitive();
+}

53-final-cleanup/shaders/26-vert.glsl

@@ -0,0 +1,21 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+out vec3 Position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+  Normal = mat3(transpose(inverse(model))) * aNormal;
+  FragPos = vec3(model * vec4(aPos, 1.0));
+  gl_Position = projection * view * vec4(FragPos, 1.0);
+  TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/27-framebuffers.frag.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D texture1;
+
+void main()
+{
+  FragColor = texture(texture1, TexCoords);
+}

53-final-cleanup/shaders/27-framebuffers.vert.glsl

@@ -0,0 +1,26 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+layout (location = 3) in vec3 aOffset;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+uniform vec3 offsets[10];
+
+void main()
+{
+  vec3 in_offset = aOffset;
+
+  vec4 offset = vec4(aPos + in_offset, 1.0);
+  gl_Position = projection * view * model * offset;
+  FragPos = vec3(model * offset);
+  Normal = mat3(transpose(inverse(model))) * aNormal;
+  TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/3.3.shader.fs

@@ -0,0 +1,8 @@
+#version 330 core
+out vec4 FragColor;
+in vec3 ourColor;
+
+void main()
+{
+    FragColor = vec4(ourColor, 1.0);
+}

53-final-cleanup/shaders/3.3.shader.vs

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec3 aPos; // the position variable has attribute position 0
+layout (location = 1) in vec3 aColor;
+
+out vec3 ourColor;
+
+void main()
+{
+    gl_Position = vec4(aPos, 1.0); // see how we directly give a vec3 to vec4's constructor
+    ourColor = aColor;
+}

53-final-cleanup/shaders/30-screen-bw.frag.glsl

@@ -0,0 +1,13 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+
+void main()
+{
+    vec3 col = texture(screenTexture, TexCoords).rgb;
+    float grayscale = 0.2126 * col.r + 0.7152 * col.g + 0.0722 * col.b;
+    FragColor = vec4(vec3(grayscale), 1.0);
+}

53-final-cleanup/shaders/30-screen.frag.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+
+void main()
+{
+    FragColor = texture(screenTexture, TexCoords);
+}

53-final-cleanup/shaders/30-screen.vert.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);
+    TexCoords = aTexCoords;
+}

53-final-cleanup/shaders/32-text.frag.glsl

@@ -0,0 +1,12 @@
+#version 330 core
+in vec2 TexCoords;
+out vec4 color;
+
+uniform sampler2D text;
+uniform vec3 textColor;
+
+void main()
+{
+    vec4 sampled = vec4(1.0, 1.0, 1.0, texture(text, TexCoords).r);
+    color = vec4(textColor, 1.0) * sampled;
+}

53-final-cleanup/shaders/32-text.vert.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec4 vertex; // <vec2 pos, vec2 tex>
+out vec2 TexCoords;
+
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * vec4(vertex.xy, 0.0, 1.0);
+    TexCoords = vertex.zw;
+}

53-final-cleanup/shaders/33-depth.frag.glsl

@@ -0,0 +1,6 @@
+#version 330 core
+
+void main()
+{
+    // gl_FragDepth = gl_FragCoord.z;
+}

53-final-cleanup/shaders/33-depth.vert.glsl

@@ -0,0 +1,10 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+
+uniform mat4 lightSpaceMatrix;
+uniform mat4 model;
+
+void main()
+{
+    gl_Position = lightSpaceMatrix * model * vec4(aPos, 1.0);
+}

53-final-cleanup/shaders/33-framebuffers.frag.glsl

@@ -0,0 +1,72 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoords;
+in vec4 FragPosLightSpace;
+
+uniform vec3 lightPos;
+uniform vec3 viewPos;
+uniform sampler2D shadowMap;
+uniform sampler2D texture_diffuse1;
+uniform sampler2D texture_specular1;
+
+float ShadowCalculation(vec4 fragPosLightSpace, float bias)
+{
+    // perform perspective divide
+    vec3 projCoords = fragPosLightSpace.xyz / fragPosLightSpace.w;
+
+    // transform to [0,1] range
+    projCoords = projCoords * 0.5 + 0.5;
+
+    // avoid the frustrum
+    if(projCoords.z > 1.0) return 0.0;
+
+    // get closest depth value from light's perspective (using [0,1] range fragPosLight as coords)
+    float closestDepth = texture(shadowMap, projCoords.xy).r;
+
+    // get depth of current fragment from light's perspective
+    float currentDepth = projCoords.z;
+
+    // check whether current frag pos is in shadow
+    // PCF
+    float shadow = 0.0;
+    vec2 texelSize = 1.0 / textureSize(shadowMap, 0);
+    for(int x = -1; x <= 1; ++x) {
+      for(int y = -1; y <= 1; ++y) {
+        float pcfDepth = texture(shadowMap, projCoords.xy + vec2(x, y) * texelSize).r;
+        shadow += currentDepth - bias > pcfDepth  ? 1.0 : 0.0;
+      }
+    }
+
+    return shadow / 9.0;
+}
+
+void main()
+{
+  vec3 color = texture(texture_diffuse1, TexCoords).rgb;
+  vec3 normal = normalize(Normal);
+  vec3 lightColor = vec3(0.7);
+  // ambient
+  vec3 ambient = 0.3 * lightColor;
+  // diffuse
+  vec3 lightDir = normalize(lightPos - FragPos);
+  float diff = max(dot(lightDir, normal), 0.0);
+  vec3 diffuse = diff * lightColor;
+  // specular
+  vec3 viewDir = normalize(viewPos - FragPos);
+  vec3 reflectDir = reflect(-lightDir, normal);
+  float spec = 0.0;
+  vec3 halfwayDir = normalize(lightDir + viewDir);
+  spec = pow(max(dot(normal, halfwayDir), 0.0), 64.0);
+  vec3 specular = spec * lightColor;
+  // calculate shadow
+
+  float bias = max(0.05 * (1.0 - dot(normal, lightDir)), 0.005);
+  float shadow = ShadowCalculation(FragPosLightSpace, bias);
+
+  vec3 lighting = (ambient + (1.0 - shadow) * (diffuse + specular)) * color;
+
+  FragColor = vec4(lighting, 1.0);
+}

53-final-cleanup/shaders/33-framebuffers.vert.glsl

@@ -0,0 +1,23 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+out vec4 FragPosLightSpace;
+
+uniform mat4 projection;
+uniform mat4 view;
+uniform mat4 model;
+uniform mat4 lightSpaceMatrix;
+
+void main()
+{
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = transpose(inverse(mat3(model))) * aNormal;
+    TexCoords = aTexCoords;
+    FragPosLightSpace = lightSpaceMatrix * vec4(FragPos, 1.0);
+    gl_Position = projection * view * model * vec4(aPos, 1.0);
+}

53-final-cleanup/shaders/33-shadow_dbg.frag.glsl

@@ -0,0 +1,22 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D shadowMap;
+uniform float near_plane;
+uniform float far_plane;
+
+// required when using a perspective projection matrix
+float LinearizeDepth(float depth)
+{
+    float z = depth * 2.0 - 1.0; // Back to NDC
+    return (2.0 * near_plane * far_plane) / (far_plane + near_plane - z * (far_plane - near_plane));
+}
+
+void main()
+{
+    float depthValue = texture(shadowMap, TexCoords).r;
+    // FragColor = vec4(vec3(LinearizeDepth(depthValue) / far_plane), 1.0); // perspective
+    FragColor = vec4(vec3(depthValue), 1.0); // orthographic
+}

53-final-cleanup/shaders/33-shadow_dbg.vert.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    TexCoords = aTexCoords;
+    gl_Position = vec4(aPos, 1.0);
+}

53-final-cleanup/shaders/4.2.texture.fs

@@ -0,0 +1,11 @@
+#version 330 core
+
+out vec4 FragColor;
+in vec2 TexCoord;
+
+uniform sampler2D texture1;
+
+void main()
+{
+  FragColor = texture(texture1, TexCoord);
+}

53-final-cleanup/shaders/4.2.texture.vs

@@ -0,0 +1,15 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec2 aTexCoord;
+
+out vec2 TexCoord;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(aPos, 1.0f);
+    TexCoord = vec2(aTexCoord.x, aTexCoord.y);
+}