initial commit

res/preload.json

@@ -6,10 +6,12 @@
         "lines",
         "entity",
         "background",
-        "skybox_gen"
+        "skybox_gen",
+        "shadows"
     ],
     "post-effects": [
-        "default"
+        "default",
+        "ssao"
     ],
     "textures": [
         "gui/menubg",

res/resources.json

@@ -4,5 +4,8 @@
         "third-person-front",
         "third-person-back",
         "cinematic"
+    ],
+    "post-effect-slot": [
+        "default"
     ]
 }

res/scripts/hud.lua

@@ -55,4 +55,8 @@ function on_hud_open()
             player.set_vel(pid, 0, 1, 0)
         end
     end)
+
+    local slot = gfx.posteffects.index("core:default")
+    gfx.posteffects.set_effect(slot, "ssao")
+    --gfx.posteffects.set_intensity(slot, 1.0)
 end

res/shaders/background.glslf

@@ -1,9 +1,13 @@
 in vec3 v_coord;
-out vec4 f_color;
+layout (location = 0) out vec4 f_color;
+layout (location = 1) out vec4 f_position;
+layout (location = 2) out vec4 f_normal;
 
 uniform samplerCube u_cubemap;
 
 void main(){
     vec3 dir = normalize(v_coord);
+    f_position = vec4(100000.0);
+    f_normal = vec4(0.0);
     f_color = texture(u_cubemap, dir);
 }

res/shaders/effect.glslf

@@ -2,8 +2,15 @@ in vec2 v_uv;
 out vec4 f_color;
 
 uniform sampler2D u_screen;
+uniform sampler2D u_position;
+uniform sampler2D u_normal;
+uniform sampler2D u_noise;
+uniform sampler2D u_shadows;
+
 uniform ivec2 u_screenSize;
 uniform float u_intensity;
+uniform float u_timer;
+uniform mat4 u_projection;
 
 #include <__effect__>
 

res/shaders/effects/default.glsl

@@ -1,3 +1,50 @@
-vec4 effect() {
-    return texture(u_screen, v_uv);
+uniform vec3 samples[64];
+
+int kernelSize = 32;
+float radius = 0.25;
+float bias = 0.025;
+
+float near_plane = 0.5f;
+float far_plane = 200.0f;
+
+// required when using a perspective projection matrix
+float linearize_depth(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));	
+}
+
+float fmod(float x, float y) {
+    return x - y * floor(x/y);
+}
+
+vec4 effect() {
+    vec2 noiseScale = u_screenSize / 4.0;
+
+    vec3 position = texture(u_position, v_uv).xyz;
+    vec3 color = texture(u_screen, v_uv).rgb;
+    vec3 normal = texture(u_normal, v_uv).xyz;
+    vec3 randomVec = normalize(texture(u_noise, v_uv * noiseScale).xyz);
+
+    vec3 tangent = normalize(randomVec - normal * dot(randomVec, normal));
+    vec3 bitangent = cross(normal, tangent);
+    mat3 TBN  = mat3(tangent, bitangent, normal);
+
+    float occlusion = 0.0;
+    for(int i = 0; i < kernelSize; ++i)
+    {
+        vec3 samplePos = TBN * samples[i];
+        samplePos = position + samplePos * radius; 
+        
+        vec4 offset = vec4(samplePos, 1.0);
+        offset = u_projection * offset;
+        offset.xyz /= offset.w;
+        offset.xyz = offset.xyz * 0.5 + 0.5;
+        
+        float sampleDepth = texture(u_position, offset.xy).z;
+        float rangeCheck = smoothstep(0.0, 1.0, radius / abs(position.z - sampleDepth));
+        occlusion += (sampleDepth >= samplePos.z + bias ? 1.0 : 0.0) * rangeCheck;
+    }
+    occlusion = 1.1 - (occlusion / kernelSize);
+    float d = texture(u_shadows, v_uv).r;
+    return vec4(color * occlusion, 1.0);
 }

res/shaders/effects/ssao.glsl

@@ -0,0 +1,11 @@
+uniform vec3 samples[64];
+
+vec4 effect() {
+    vec2 noiseScale = u_screenSize / 4.0; 
+
+    vec3 position = texture(u_position, v_uv).xyz;
+    vec3 color = texture(u_screen, v_uv).rgb;
+    vec3 normal = texture(u_normal, v_uv).xyz;
+    vec3 randomVec = texture(u_noise, v_uv * noiseScale).xyz;
+    return vec4(randomVec, 1.0);
+}

res/shaders/entity.glslf

@@ -1,8 +1,13 @@
 in vec4 a_color;
 in vec2 a_texCoord;
+in vec3 a_position;
 in vec3 a_dir;
+in vec3 a_normal;
 in float a_fog;
-out vec4 f_color;
+
+layout (location = 0) out vec4 f_color;
+layout (location = 1) out vec4 f_position;
+layout (location = 2) out vec4 f_normal;
 
 uniform sampler2D u_texture0;
 uniform samplerCube u_cubemap;
@@ -20,4 +25,6 @@ void main() {
         discard;
     f_color = mix(a_color * tex_color, vec4(fogColor,1.0), a_fog);
     f_color.a = alpha;
+    f_position = vec4(a_position, 1.0);
+    f_normal = vec4(a_normal, 1.0);
 }

res/shaders/entity.glslv

@@ -7,7 +7,9 @@ layout (location = 3) in vec4 v_light;
 
 out vec4 a_color;
 out vec2 a_texCoord;
+out vec3 a_normal;
 out float a_fog;
+out vec3 a_position;
 out vec3 a_dir;
 
 uniform mat4 u_model;
@@ -31,6 +33,8 @@ void main() {
     vec3 pos3d = modelpos.xyz - u_cameraPos;
     modelpos.xyz = apply_planet_curvature(modelpos.xyz, pos3d);
 
+    a_normal = vec3(0.0, 1.0, 0.0);//v_normal.xyz * 2.0 - 1.0;
+
     vec3 light = v_light.rgb;
     float torchlight = max(0.0, 1.0-distance(u_cameraPos, modelpos.xyz) / 
                        u_torchlightDistance);
@@ -48,4 +52,6 @@ void main() {
     a_fog = min(1.0, max(pow(depth * u_fogFactor, u_fogCurve),
                          min(pow(depth * u_weatherFogDencity, u_weatherFogCurve), u_weatherFogOpacity)));
     gl_Position = u_proj * u_view * modelpos;
+
+    a_position = (u_view * modelpos).xyz;
 }

res/shaders/main.glslf

@@ -1,19 +1,53 @@
+layout (location = 0) out vec4 f_color;
+layout (location = 1) out vec4 f_position;
+layout (location = 2) out vec4 f_normal;
+
 in vec4 a_color;
 in vec2 a_texCoord;
 in float a_fog;
+in vec3 a_position;
 in vec3 a_dir;
-out vec4 f_color;
+in vec3 a_normal;
+in vec3 a_realnormal;
+in vec4 a_modelpos;
 
 uniform sampler2D u_texture0;
 uniform samplerCube u_cubemap;
+uniform sampler2DShadow u_shadows;
+
+// flags
 uniform bool u_alphaClip;
 uniform bool u_debugLights;
+uniform bool u_debugNormals;
+uniform bool u_enableShadows;
+
+uniform mat4 u_shadowsMatrix;
+
+const int BLUR_SAMPLES = 6;
 
 void main() {
+    float shadow = 1.0;
+    if (u_enableShadows) {
+        vec4 mpos = u_shadowsMatrix * vec4(a_modelpos.xyz, 1.0);
+        vec3 projCoords = mpos.xyz / mpos.w;
+        projCoords = projCoords * 0.5 + 0.5;
+        projCoords.z -= 0.0001;
+
+        shadow = 0.0;
+        
+        for (int i = 0; i < BLUR_SAMPLES; i++) {
+            shadow += texture(u_shadows, projCoords.xyz + vec3(
+                -0.002*(i%2==0?1:0)*i/BLUR_SAMPLES,
+                -0.002*(i%2==0?0:1)*i/BLUR_SAMPLES,
+                -0.0005 * i/BLUR_SAMPLES));
+        }
+        shadow /= BLUR_SAMPLES;
+        shadow += 0.5;
+        shadow = shadow * 0.7 + 0.3;
+    }
+
     vec3 fogColor = texture(u_cubemap, a_dir).rgb;
     vec4 tex_color = texture(u_texture0, a_texCoord);
-    if (u_debugLights)
-        tex_color.rgb = vec3(1.0);
     float alpha = a_color.a * tex_color.a;
     if (u_alphaClip) {
         if (alpha < 0.2f)
@@ -23,6 +57,14 @@ void main() {
         if (alpha < 0.002f)
             discard;
     }
+    if (u_debugLights)
+        tex_color.rgb = u_debugNormals ? (a_normal * 0.5 + 0.5) : vec3(1.0);
+    else if (u_debugNormals) {
+        tex_color.rgb *= a_normal * 0.5 + 0.5;
+    }
     f_color = mix(a_color * tex_color, vec4(fogColor,1.0), a_fog);
+    f_color.rgb *= shadow;
     f_color.a = alpha;
+    f_position = vec4(a_position, 1.0);
+    f_normal = vec4(a_normal, 1.0);
 }

res/shaders/main.glslv

@@ -3,12 +3,17 @@
 layout (location = 0) in vec3 v_position;
 layout (location = 1) in vec2 v_texCoord;
 layout (location = 2) in vec4 v_light;
+layout (location = 3) in vec4 v_normal;
 
 out vec4 a_color;
 out vec2 a_texCoord;
+out vec3 a_normal;
 out float a_distance;
 out float a_fog;
+out vec3 a_position;
+out vec4 a_modelpos;
 out vec3 a_dir;
+out vec3 a_realnormal;
 
 uniform mat4 u_model;
 uniform mat4 u_proj;
@@ -25,12 +30,19 @@ uniform samplerCube u_cubemap;
 
 uniform vec3 u_torchlightColor;
 uniform float u_torchlightDistance;
+uniform bool u_enableShadows;
 
 void main() {
     vec4 modelpos = u_model * vec4(v_position, 1.0f);
     vec3 pos3d = modelpos.xyz-u_cameraPos;
     modelpos.xyz = apply_planet_curvature(modelpos.xyz, pos3d);
 
+    a_realnormal = v_normal.xyz;
+    mat3 normalMatrix = transpose(inverse(mat3(u_view * u_model)));
+    a_normal = v_normal.xyz * 2.0 - 1.0;
+    a_normal = normalMatrix * (false ? -a_normal : a_normal);
+    //a_normal = v_normal.xyz * 2.0 - 1.0;
+
     vec3 light = v_light.rgb;
     float torchlight = max(0.0, 1.0-distance(u_cameraPos, modelpos.xyz) /
                        u_torchlightDistance);
@@ -47,4 +59,7 @@ void main() {
     a_fog = min(1.0, max(pow(depth * u_fogFactor, u_fogCurve),
                          min(pow(depth * u_weatherFogDencity, u_weatherFogCurve), u_weatherFogOpacity)));
     gl_Position = u_proj * u_view * modelpos;
+
+    a_position = (u_view * modelpos).xyz;
+    a_modelpos = modelpos;
 }

res/shaders/shadows.glslf

@@ -0,0 +1,11 @@
+in vec2 a_texCoord;
+
+uniform sampler2D u_texture0;
+
+void main() {
+    vec4 tex_color = texture(u_texture0, a_texCoord);
+    if (tex_color.a < 0.5) {
+        discard;
+    }
+    // depth will be written anyway
+}

res/shaders/shadows.glslv

@@ -0,0 +1,17 @@
+#include <commons>
+
+layout (location = 0) in vec3 v_position;
+layout (location = 1) in vec2 v_texCoord;
+layout (location = 2) in vec4 v_light;
+layout (location = 3) in vec4 v_normal;
+
+out vec2 a_texCoord;
+
+uniform mat4 u_model;
+uniform mat4 u_proj;
+uniform mat4 u_view;
+
+void main() {
+    a_texCoord = v_texCoord;
+    gl_Position = u_proj * u_view * u_model * vec4(v_position, 1.0f);
+}

src/frontend/hud.cpp

@@ -178,6 +178,8 @@ Hud::Hud(Engine& engine, LevelFrontend& frontend, Player& player)
     uicamera = std::make_unique<Camera>(glm::vec3(), 1);
     uicamera->perspective = false;
     uicamera->flipped = true;
+    uicamera->near = -1.0f;
+    uicamera->far = 1.0f;
 
     debugPanel = create_debug_panel(
         engine, frontend.getLevel(), player, allowDebugCheats

src/frontend/screens/MenuScreen.cpp

@@ -22,6 +22,8 @@ MenuScreen::MenuScreen(Engine& engine) : Screen(engine) {
     uicamera =
         std::make_unique<Camera>(glm::vec3(), engine.getWindow().getSize().y);
     uicamera->perspective = false;
+    uicamera->near = -1.0f;
+    uicamera->far = 1.0f;
     uicamera->flipped = true;
 }
 

src/graphics/core/DrawContext.cpp

@@ -100,7 +100,7 @@ void DrawContext::setViewport(const glm::uvec2& viewport) {
     glViewport(0, 0, viewport.x, viewport.y);
 }
 
-void DrawContext::setFramebuffer(Framebuffer* fbo) {
+void DrawContext::setFramebuffer(Bindable* fbo) {
     if (this->fbo == fbo)
         return;
     this->fbo = fbo;

src/graphics/core/DrawContext.hpp

@@ -16,7 +16,7 @@ class DrawContext {
     glm::uvec2 viewport;
     Batch2D* g2d;
     Flushable* flushable = nullptr;
-    Framebuffer* fbo = nullptr;
+    Bindable* fbo = nullptr;
     bool depthMask = true;
     bool depthTest = false;
     bool cullFace = false;
@@ -37,7 +37,7 @@ public:
     DrawContext sub(Flushable* flushable=nullptr) const;
 
     void setViewport(const glm::uvec2& viewport);
-    void setFramebuffer(Framebuffer* fbo);
+    void setFramebuffer(Bindable* fbo);
     void setDepthMask(bool flag);
     void setDepthTest(bool flag);
     void setCullFace(bool flag);

src/graphics/core/Framebuffer.cpp

@@ -2,6 +2,9 @@
 
 #include <GL/glew.h>
 #include "Texture.hpp"
+#include "debug/Logger.hpp"
+
+static debug::Logger logger("gl-framebuffer");
 
 Framebuffer::Framebuffer(uint fbo, uint depth, std::unique_ptr<Texture> texture)
   : fbo(fbo), depth(depth), texture(std::move(texture)) 
@@ -38,18 +41,41 @@ Framebuffer::Framebuffer(uint width, uint height, bool alpha)
 
     // Setup color attachment (texture)
     texture = create_texture(width, height, format);
-    
+
+    glGenTextures(1, &positions);
+    glBindTexture(GL_TEXTURE_2D, positions);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, NULL);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, positions, 0);
+
+    glGenTextures(1, &normals);
+    glBindTexture(GL_TEXTURE_2D, normals);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, NULL);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, normals, 0);
+
+    unsigned int attachments[3] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
+    glDrawBuffers(3, attachments);
+
     // Setup depth attachment
     glGenRenderbuffers(1, &depth);
     glBindRenderbuffer(GL_RENDERBUFFER, depth);
     glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
     glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depth);
+
+    if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+        logger.error() << "framebuffer is not complete!";
+    }
+
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
 Framebuffer::~Framebuffer() {
     glDeleteFramebuffers(1, &fbo);
-    glDeleteRenderbuffers(1, &depth);
+    glDeleteTextures(1, &normals);
+    glDeleteTextures(1, &depth);
 }
 
 void Framebuffer::bind() {
@@ -60,6 +86,19 @@ void Framebuffer::unbind() {
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
+void Framebuffer::bindBuffers() {
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, texture->getId());
+
+    glActiveTexture(GL_TEXTURE1);
+    glBindTexture(GL_TEXTURE_2D, positions);
+
+    glActiveTexture(GL_TEXTURE2);
+    glBindTexture(GL_TEXTURE_2D, normals);
+
+    glActiveTexture(GL_TEXTURE0);
+}
+
 void Framebuffer::resize(uint width, uint height) {
     if (this->width == width && this->height == height) {
         return;
@@ -67,11 +106,22 @@ void Framebuffer::resize(uint width, uint height) {
     this->width = width;
     this->height = height;
 
+    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+
     glBindRenderbuffer(GL_RENDERBUFFER, depth);
     glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
     glBindRenderbuffer(GL_RENDERBUFFER, 0);
 
-    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+    glBindTexture(GL_TEXTURE_2D, positions);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F, width, height, 0, GL_RGB, GL_FLOAT, NULL);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, positions, 0);
+
+    glBindTexture(GL_TEXTURE_2D, normals);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F, width, height, 0, GL_RGB, GL_FLOAT, NULL);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, normals, 0);
+
+    glBindTexture(GL_TEXTURE_2D, 0);
+
     texture = create_texture(width, height, format);
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }

src/graphics/core/Framebuffer.hpp

@@ -1,14 +1,17 @@
 #pragma once
 
 #include "typedefs.hpp"
+#include "commons.hpp"
 
 #include <memory>
 
 class Texture;
 
-class Framebuffer {
+class Framebuffer : public Bindable {
     uint fbo;
     uint depth;
+    uint positions;
+    uint normals;
     uint width;
     uint height;
     uint format;
@@ -19,10 +22,12 @@ public:
     ~Framebuffer();
 
     /// @brief Use framebuffer
-    void bind();
+    void bind() override;
 
     /// @brief Stop using framebuffer
-    void unbind();
+    void unbind() override;
+
+    void bindBuffers();
 
     /// @brief Update framebuffer texture size
     /// @param width new width

src/graphics/core/GBuffer.cpp

@@ -0,0 +1,186 @@
+#include "GBuffer.hpp"
+
+#include <GL/glew.h>
+
+#include "debug/Logger.hpp"
+
+static debug::Logger logger("gl-gbuffer");
+
+void GBuffer::createColorBuffer() {
+    glGenTextures(1, &colorBuffer);
+    glBindTexture(GL_TEXTURE_2D, colorBuffer);
+    glTexImage2D(
+        GL_TEXTURE_2D,
+        0,
+        GL_RGB,
+        width,
+        height,
+        0,
+        GL_RGB,
+        GL_UNSIGNED_BYTE,
+        nullptr
+    );
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glFramebufferTexture2D(
+        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorBuffer, 0
+    );
+}
+
+void GBuffer::createPositionsBuffer() {
+    glGenTextures(1, &positionsBuffer);
+    glBindTexture(GL_TEXTURE_2D, positionsBuffer);
+    glTexImage2D(
+        GL_TEXTURE_2D,
+        0,
+        GL_RGBA16F,
+        width,
+        height,
+        0,
+        GL_RGBA,
+        GL_FLOAT,
+        nullptr
+    );
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glFramebufferTexture2D(
+        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, positionsBuffer, 0
+    );
+}
+
+void GBuffer::createNormalsBuffer() {
+    glGenTextures(1, &normalsBuffer);
+    glBindTexture(GL_TEXTURE_2D, normalsBuffer);
+    glTexImage2D(
+        GL_TEXTURE_2D,
+        0,
+        GL_RGBA16F,
+        width,
+        height,
+        0,
+        GL_RGBA,
+        GL_FLOAT,
+        nullptr
+    );
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glFramebufferTexture2D(
+        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, normalsBuffer, 0
+    );
+}
+
+void GBuffer::createDepthBuffer() {
+    glGenRenderbuffers(1, &depthBuffer);
+    glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer);
+    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
+    glFramebufferRenderbuffer(
+        GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthBuffer
+    );
+}
+
+GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
+    glGenFramebuffers(1, &fbo);
+    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+
+    createColorBuffer();
+    createPositionsBuffer();
+    createNormalsBuffer();
+
+    GLenum attachments[3] = {
+        GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2
+    };
+    glDrawBuffers(3, attachments);
+
+    createDepthBuffer();
+
+    if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+        logger.error() << "framebuffer is not complete!";
+    }
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+GBuffer::~GBuffer() {
+    glDeleteTextures(1, &colorBuffer);
+    glDeleteTextures(1, &positionsBuffer);
+    glDeleteTextures(1, &normalsBuffer);
+    glDeleteRenderbuffers(1, &depthBuffer);
+    glDeleteFramebuffers(1, &fbo);
+}
+
+void GBuffer::bind() {
+    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+}
+
+void GBuffer::unbind() {
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+void GBuffer::bindBuffers() {
+    glActiveTexture(GL_TEXTURE2);
+    glBindTexture(GL_TEXTURE_2D, normalsBuffer);
+
+    glActiveTexture(GL_TEXTURE1);
+    glBindTexture(GL_TEXTURE_2D, positionsBuffer);
+
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, colorBuffer);
+}
+
+void GBuffer::resize(uint width, uint height) {
+    if (this->width == width && this->height == height) {
+        return;
+    }
+    this->width = width;
+    this->height = height;
+
+    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+
+    glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer);
+    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
+    glBindRenderbuffer(GL_RENDERBUFFER, 0);
+
+    glBindTexture(GL_TEXTURE_2D, colorBuffer);
+    glTexImage2D(
+        GL_TEXTURE_2D,
+        0,
+        GL_RGB,
+        width,
+        height,
+        0,
+        GL_RGB,
+        GL_UNSIGNED_BYTE,
+        nullptr
+    );
+    glFramebufferTexture2D(
+        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorBuffer, 0
+    );
+
+    glBindTexture(GL_TEXTURE_2D, positionsBuffer);
+    glTexImage2D(
+        GL_TEXTURE_2D, 0, GL_RGB16F, width, height, 0, GL_RGB, GL_FLOAT, nullptr
+    );
+    glFramebufferTexture2D(
+        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, positionsBuffer, 0
+    );
+
+    glBindTexture(GL_TEXTURE_2D, normalsBuffer);
+    glTexImage2D(
+        GL_TEXTURE_2D, 0, GL_RGB16F, width, height, 0, GL_RGB, GL_FLOAT, nullptr
+    );
+    glFramebufferTexture2D(
+        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, normalsBuffer, 0
+    );
+
+    glBindTexture(GL_TEXTURE_2D, 0);
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+uint GBuffer::getWidth() const {
+    return width;
+}
+
+uint GBuffer::getHeight() const {
+    return height;
+}

src/graphics/core/GBuffer.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include "typedefs.hpp"
+#include "commons.hpp"
+
+class GBuffer : public Bindable{
+public:
+    GBuffer(uint width, uint height);
+    ~GBuffer();
+
+    void bind() override;
+    void unbind() override;
+
+    void bindBuffers();
+
+    void resize(uint width, uint height);
+
+    uint getWidth() const;
+    uint getHeight() const;
+private:
+    uint width;
+    uint height;
+
+    uint fbo;
+    uint colorBuffer;
+    uint positionsBuffer;
+    uint normalsBuffer;
+    uint depthBuffer;
+
+    void createColorBuffer();
+    void createPositionsBuffer();
+    void createNormalsBuffer();
+    void createDepthBuffer();
+};

src/graphics/core/PostProcessing.cpp

@@ -6,22 +6,56 @@
 #include "DrawContext.hpp"
 #include "PostEffect.hpp"
 #include "assets/Assets.hpp"
+#include "window/Camera.hpp"
 
 #include <stdexcept>
+#include <random>
 
 PostProcessing::PostProcessing(size_t effectSlotsCount)
     : effectSlots(effectSlotsCount) {
     // Fullscreen quad mesh bulding
-    PostProcessingVertex meshData[]{
-            {{-1.0f, -1.0f}},
-            {{-1.0f, 1.0f}},
-            {{1.0f, 1.0f}},
-            {{-1.0f, -1.0f}},
-            {{1.0f, 1.0f}},
-            {{1.0f, -1.0f}},
+    PostProcessingVertex meshData[] {
+        {{-1.0f, -1.0f}},
+        {{-1.0f, 1.0f}},
+        {{1.0f, 1.0f}},
+        {{-1.0f, -1.0f}},
+        {{1.0f, 1.0f}},
+        {{1.0f, -1.0f}},
     };
 
     quadMesh = std::make_unique<Mesh<PostProcessingVertex>>(meshData, 6);
+
+    std::vector<glm::vec3> ssaoNoise;
+    for (unsigned int i = 0; i < 16; i++)
+    {
+        glm::vec3 noise(
+            (rand() / static_cast<float>(RAND_MAX)) * 2.0 - 1.0, 
+            (rand() / static_cast<float>(RAND_MAX)) * 2.0 - 1.0, 
+            0.0f); 
+        ssaoNoise.push_back(noise);
+    }  
+    glGenTextures(1, &noiseTexture);
+    glBindTexture(GL_TEXTURE_2D, noiseTexture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F, 4, 4, 0, GL_RGB, GL_FLOAT, ssaoNoise.data());
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    std::uniform_real_distribution<float> randomFloats(0.0, 1.0); 
+    std::default_random_engine generator;
+    for (unsigned int i = 0; i < 64; ++i)
+    {
+        glm::vec3 sample(
+            randomFloats(generator) * 2.0 - 1.0, 
+            randomFloats(generator) * 2.0 - 1.0, 
+            randomFloats(generator)
+        );
+        sample  = glm::normalize(sample);
+        sample *= randomFloats(generator);
+        ssaoKernel.push_back(sample);  
+    }
 }
 
 PostProcessing::~PostProcessing() = default;
@@ -39,7 +73,7 @@ void PostProcessing::use(DrawContext& context) {
 }
 
 void PostProcessing::render(
-    const DrawContext& context, const Assets& assets, float timer
+    const DrawContext& context, const Assets& assets, float timer, const Camera& camera, uint depthMap
 ) {
     if (fbo == nullptr) {
         throw std::runtime_error("'use(...)' was never called");
@@ -51,8 +85,38 @@ void PostProcessing::render(
 
     if (totalPasses == 0) {
         auto& effect = assets.require<PostEffect>("default");
-        effect.use();
         fbo->getTexture()->bind();
+        fbo->bindBuffers();
+
+        glActiveTexture(GL_TEXTURE3);
+        glBindTexture(GL_TEXTURE_2D, noiseTexture);
+        glActiveTexture(GL_TEXTURE0);
+
+        glActiveTexture(GL_TEXTURE4);
+        glBindTexture(GL_TEXTURE_2D, depthMap);
+        glActiveTexture(GL_TEXTURE0);
+
+        const auto& viewport = context.getViewport();
+
+        auto& shader = effect.use();
+        if (!ssaoConfigured) {
+            for (unsigned int i = 0; i < 64; ++i) {
+                auto name = "samples["+ std::to_string(i) + "]";
+                shader.uniform3f(name, ssaoKernel[i]);
+            }
+            ssaoConfigured = true;
+        }
+        shader.uniform1i("u_screen", 0);
+        shader.uniform1i("u_position", 1);
+        shader.uniform1i("u_normal", 2);
+        shader.uniform1i("u_noise", 3);
+        shader.uniform1i("u_shadows", 4);
+        shader.uniform2i("u_screenSize", viewport);
+        shader.uniform1f("u_timer", timer);
+        shader.uniform1f("near_plane", camera.near);
+        shader.uniform1f("far_plane", camera.far);
+        shader.uniformMatrix("u_projection", camera.getProjection());
+
         quadMesh->draw();
         return;
     }
@@ -64,15 +128,25 @@ void PostProcessing::render(
         }
         auto& shader = effect->use();
 
+        for (unsigned int i = 0; i < 64; ++i) {
+            shader.uniform3f("samples["+ std::to_string(i) + "]", ssaoKernel[i]);
+        }
+
         const auto& viewport = context.getViewport();
         shader.uniform1i("u_screen", 0);
+        shader.uniform1i("u_position", 1);
+        shader.uniform1i("u_normal", 2);
+        shader.uniform1i("u_noise", 3);
         shader.uniform2i("u_screenSize", viewport);
         shader.uniform1f("u_timer", timer);
-
+        shader.uniformMatrix("u_projection", camera.getProjView(false));
         fbo->getTexture()->bind();
+        fbo->bindBuffers();
+
         if (currentPass < totalPasses) {
             fboSecond->bind();
         }
+
         quadMesh->draw();
         if (currentPass < totalPasses) {
             fboSecond->unbind();

src/graphics/core/PostProcessing.hpp

@@ -11,6 +11,7 @@ class Framebuffer;
 class DrawContext;
 class ImageData;
 class PostEffect;
+class Camera;
 
 struct PostProcessingVertex {
     glm::vec2 position;
@@ -30,6 +31,10 @@ class PostProcessing {
     /// @brief Fullscreen quad mesh as the post-processing canvas
     std::unique_ptr<Mesh<PostProcessingVertex>> quadMesh;
     std::vector<std::shared_ptr<PostEffect>> effectSlots;
+
+    std::vector<glm::vec3> ssaoKernel;
+    uint noiseTexture;
+    bool ssaoConfigured = false;
 public:
     PostProcessing(size_t effectSlotsCount);
     ~PostProcessing();
@@ -42,7 +47,7 @@ public:
     /// with framebuffer texture bound
     /// @param context graphics context
     /// @throws std::runtime_error if use(...) wasn't called before
-    void render(const DrawContext& context, const Assets& assets, float timer);
+    void render(const DrawContext& context, const Assets& assets, float timer, const Camera& camera, uint depthMap);
 
     void setEffect(size_t slot, std::shared_ptr<PostEffect> effect);
 

src/graphics/core/ShadowMap.cpp

@@ -0,0 +1,47 @@
+#include "ShadowMap.hpp"
+
+#include <GL/glew.h>
+
+ShadowMap::ShadowMap(int resolution) : resolution(resolution) {
+    glGenTextures(1, &depthMap);
+    glBindTexture(GL_TEXTURE_2D, depthMap);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
+        resolution, resolution, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_BORDER);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE);
+    float border[4] {1.0f, 1.0f, 1.0f, 1.0f};
+    glTexParameterfv(GL_TEXTURE_2D,GL_TEXTURE_BORDER_COLOR, border);
+
+    glGenFramebuffers(1, &fbo);
+    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthMap, 0);
+    glDrawBuffer(GL_NONE);
+    glReadBuffer(GL_NONE);
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+ShadowMap::~ShadowMap() {
+    glDeleteFramebuffers(1, &fbo);
+    glDeleteTextures(1, &depthMap);
+}
+
+void ShadowMap::bind() {
+    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+    glClear(GL_DEPTH_BUFFER_BIT);
+}
+
+void ShadowMap::unbind() {
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+uint ShadowMap::getDepthMap() const {
+    return depthMap;
+}
+
+int ShadowMap::getResolution() const {
+    return resolution;
+}

src/graphics/core/ShadowMap.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "typedefs.hpp"
+
+class ShadowMap {
+public:
+    ShadowMap(int resolution);
+    ~ShadowMap();
+
+    void bind();
+    void unbind();
+    uint getDepthMap() const;
+    int getResolution() const;
+private:
+    uint fbo;
+    uint depthMap; 
+    int resolution;
+};

src/graphics/core/commons.hpp

@@ -69,3 +69,11 @@ public:
 
     virtual void flush() = 0;
 };
+
+class Bindable {
+public:
+    virtual ~Bindable() = default;
+
+    virtual void bind() = 0;
+    virtual void unbind() = 0;
+};

src/graphics/render/BlocksRenderer.cpp

@@ -10,7 +10,7 @@
 #include "frontend/ContentGfxCache.hpp"
 
 const glm::vec3 BlocksRenderer::SUN_VECTOR(0.528265f, 0.833149f, -0.163704f);
-const float DIRECTIONAL_LIGHT_FACTOR = 0.3f;
+const float DIRECTIONAL_LIGHT_FACTOR = 0.2f;
 
 BlocksRenderer::BlocksRenderer(
     size_t capacity,
@@ -39,13 +39,17 @@ BlocksRenderer::~BlocksRenderer() {
 
 /// Basic vertex add method
 void BlocksRenderer::vertex(
-    const glm::vec3& coord, float u, float v, const glm::vec4& light
+    const glm::vec3& coord, float u, float v, const glm::vec4& light, const glm::vec3& normal
 ) {
 
     vertexBuffer[vertexCount].position = coord;
 
     vertexBuffer[vertexCount].uv = {u,v};
 
+    vertexBuffer[vertexCount].normal[0] = static_cast<uint8_t>(normal.r * 127 + 128);
+    vertexBuffer[vertexCount].normal[1] = static_cast<uint8_t>(normal.g * 127 + 128);
+    vertexBuffer[vertexCount].normal[2] = static_cast<uint8_t>(normal.b * 127 + 128);
+
     vertexBuffer[vertexCount].color[0] = static_cast<uint8_t>(light.r * 255);
     vertexBuffer[vertexCount].color[1] = static_cast<uint8_t>(light.g * 255);
     vertexBuffer[vertexCount].color[2] = static_cast<uint8_t>(light.b * 255);
@@ -82,10 +86,10 @@ void BlocksRenderer::face(
     auto Y = axisY * h;
     auto Z = axisZ * d;
     float s = 0.5f;
-    vertex(coord + (-X - Y + Z) * s, region.u1, region.v1, lights[0] * tint);
-    vertex(coord + ( X - Y + Z) * s, region.u2, region.v1, lights[1] * tint);
-    vertex(coord + ( X + Y + Z) * s, region.u2, region.v2, lights[2] * tint);
-    vertex(coord + (-X + Y + Z) * s, region.u1, region.v2, lights[3] * tint);
+    vertex(coord + (-X - Y + Z) * s, region.u1, region.v1, lights[0] * tint, axisZ);
+    vertex(coord + ( X - Y + Z) * s, region.u2, region.v1, lights[1] * tint, axisZ);
+    vertex(coord + ( X + Y + Z) * s, region.u2, region.v2, lights[2] * tint, axisZ);
+    vertex(coord + (-X + Y + Z) * s, region.u1, region.v2, lights[3] * tint, axisZ);
     index(0, 1, 3, 1, 2, 3);
 }
 
@@ -103,7 +107,7 @@ void BlocksRenderer::vertexAO(
         axisX,
         axisY
     );
-    vertex(coord, u, v, light * tint);
+    vertex(coord, u, v, light * tint, axisZ);
 }
 
 void BlocksRenderer::faceAO(
@@ -134,11 +138,12 @@ void BlocksRenderer::faceAO(
         vertexAO(coord + ( X + Y + Z) * s, region.u2, region.v2, tint, axisX, axisY, axisZ);
         vertexAO(coord + (-X + Y + Z) * s, region.u1, region.v2, tint, axisX, axisY, axisZ);
     } else {
+        auto axisZ = glm::normalize(Z);
         glm::vec4 tint(1.0f);
-        vertex(coord + (-X - Y + Z) * s, region.u1, region.v1, tint);
-        vertex(coord + ( X - Y + Z) * s, region.u2, region.v1, tint);
-        vertex(coord + ( X + Y + Z) * s, region.u2, region.v2, tint);
-        vertex(coord + (-X + Y + Z) * s, region.u1, region.v2, tint);
+        vertex(coord + (-X - Y + Z) * s, region.u1, region.v1, tint, axisZ);
+        vertex(coord + ( X - Y + Z) * s, region.u2, region.v1, tint, axisZ);
+        vertex(coord + ( X + Y + Z) * s, region.u2, region.v2, tint, axisZ);
+        vertex(coord + (-X + Y + Z) * s, region.u1, region.v2, tint, axisZ);
     }
     index(0, 1, 2, 0, 2, 3);
 }
@@ -163,10 +168,10 @@ void BlocksRenderer::face(
         d = (1.0f - DIRECTIONAL_LIGHT_FACTOR) + d * DIRECTIONAL_LIGHT_FACTOR;
         tint *= d;
     }
-    vertex(coord + (-X - Y + Z) * s, region.u1, region.v1, tint);
-    vertex(coord + ( X - Y + Z) * s, region.u2, region.v1, tint);
-    vertex(coord + ( X + Y + Z) * s, region.u2, region.v2, tint);
-    vertex(coord + (-X + Y + Z) * s, region.u1, region.v2, tint);
+    vertex(coord + (-X - Y + Z) * s, region.u1, region.v1, tint, Z);
+    vertex(coord + ( X - Y + Z) * s, region.u2, region.v1, tint, Z);
+    vertex(coord + ( X + Y + Z) * s, region.u2, region.v2, tint, Z);
+    vertex(coord + (-X + Y + Z) * s, region.u1, region.v2, tint, Z);
     index(0, 1, 2, 0, 2, 3);
 }
 
@@ -337,7 +342,8 @@ void BlocksRenderer::blockCustomModel(
                     coord + vcoord.x * X + vcoord.y * Y + vcoord.z * Z,
                     vertex.uv.x,
                     vertex.uv.y,
-                    glm::vec4(d, d, d, d) * aoColor
+                    glm::vec4(d, d, d, d) * aoColor,
+                    n
                 );
                 indexBuffer[indexCount++] = vertexOffset++;
             }

src/graphics/render/BlocksRenderer.hpp

@@ -44,7 +44,7 @@ class BlocksRenderer {
 
     SortingMeshData sortingMesh;
 
-    void vertex(const glm::vec3& coord, float u, float v, const glm::vec4& light);
+    void vertex(const glm::vec3& coord, float u, float v, const glm::vec4& light, const glm::vec3& normal);
     void index(uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f);
 
     void vertexAO(

src/graphics/render/ChunksRenderer.cpp

@@ -143,7 +143,7 @@ void ChunksRenderer::update() {
 }
 
 const Mesh<ChunkVertex>* ChunksRenderer::retrieveChunk(
-    size_t index, const Camera& camera, Shader& shader, bool culling
+    size_t index, const Camera& camera, bool culling
 ) {
     auto chunk = chunks.getChunks()[index];
     if (chunk == nullptr) {
@@ -219,7 +219,7 @@ void ChunksRenderer::drawChunks(
     // TODO: minimize draw calls number
     for (int i = indices.size()-1; i >= 0; i--) {
         auto& chunk = chunks.getChunks()[indices[i].index];
-        auto mesh = retrieveChunk(indices[i].index, camera, shader, culling);
+        auto mesh = retrieveChunk(indices[i].index, camera, culling);
 
         if (mesh) {
             glm::vec3 coord(

src/graphics/render/ChunksRenderer.hpp

@@ -50,7 +50,7 @@ class ChunksRenderer {
     std::vector<ChunksSortEntry> indices;
     util::ThreadPool<std::shared_ptr<Chunk>, RendererResult> threadPool;
     const Mesh<ChunkVertex>* retrieveChunk(
-        size_t index, const Camera& camera, Shader& shader, bool culling
+        size_t index, const Camera& camera, bool culling
     );
 public:
     ChunksRenderer(

src/graphics/render/Skybox.cpp

@@ -136,8 +136,8 @@ void Skybox::draw(
         batch3d->sprite(pos, glm::vec3(0, 0, 1),
                         up, 1, 1, UVRegion(), tint);
     }
-
-    drawStars(angle, opacity);
+    batch3d->flush();
+    //drawStars(angle, opacity);
 }
 
 void Skybox::refresh(const DrawContext& pctx, float t, float mie, uint quality) {

src/graphics/render/WorldRenderer.cpp

@@ -41,6 +41,8 @@
 #include "graphics/core/Shader.hpp"
 #include "graphics/core/Texture.hpp"
 #include "graphics/core/Font.hpp"
+#include "graphics/core/ShadowMap.hpp"
+#include "graphics/core/GBuffer.hpp"
 #include "BlockWrapsRenderer.hpp"
 #include "ParticlesRenderer.hpp"
 #include "PrecipitationRenderer.hpp"
@@ -100,6 +102,10 @@ WorldRenderer::WorldRenderer(
         settings.graphics.skyboxResolution.get(),
         assets->require<Shader>("skybox_gen")
     );
+
+    shadowMap = std::make_unique<ShadowMap>(1024);
+
+    shadowCamera = std::make_unique<Camera>();
 }
 
 WorldRenderer::~WorldRenderer() = default;
@@ -119,6 +125,7 @@ void WorldRenderer::setupWorldShader(
     shader.uniform1f("u_fogFactor", fogFactor);
     shader.uniform1f("u_fogCurve", settings.graphics.fogCurve.get());
     shader.uniform1i("u_debugLights", lightsDebug);
+    shader.uniform1i("u_debugNormals", false);
     shader.uniform1f("u_weatherFogOpacity", weather.fogOpacity());
     shader.uniform1f("u_weatherFogDencity", weather.fogDencity());
     shader.uniform1f("u_weatherFogCurve", weather.fogCurve());
@@ -126,6 +133,15 @@ void WorldRenderer::setupWorldShader(
     shader.uniform2f("u_lightDir", skybox->getLightDir());
     shader.uniform3f("u_cameraPos", camera.position);
     shader.uniform1i("u_cubemap", 1);
+    shader.uniform1i("u_enableShadows", gbufferPipeline);
+
+    if (gbufferPipeline) {
+        shader.uniformMatrix("u_shadowsMatrix", shadowCamera->getProjView());
+        glActiveTexture(GL_TEXTURE4);
+        shader.uniform1i("u_shadows", 4);
+        glBindTexture(GL_TEXTURE_2D, shadowMap->getDepthMap());
+        glActiveTexture(GL_TEXTURE0);
+    }
 
     auto indices = level.content.getIndices();
     // Light emission when an emissive item is chosen
@@ -354,10 +370,52 @@ void WorldRenderer::draw(
 
     const auto& assets = *engine.getAssets();
     auto& linesShader = assets.require<Shader>("lines");
+    auto& shadowsShader = assets.require<Shader>("shadows");
+
+    if (gbufferPipeline) {
+        float shadowMapScale = 0.05f;
+        float shadowMapSize = shadowMap->getResolution() * shadowMapScale;
+        *shadowCamera = Camera(camera.position, shadowMapSize);
+        shadowCamera->near = 0.5f;
+        shadowCamera->far = 600.0f;
+        shadowCamera->perspective = false;
+        shadowCamera->setAspectRatio(1.0f);
+        shadowCamera->rotate(glm::radians(-65.0f), glm::radians(-35.0f), glm::radians(-35.0f));
+        //shadowCamera.perspective = false;
+        /*shadowCamera.rotation = //glm::inverse(
+            glm::lookAt({}, glm::normalize(shadowCamera.position-camera.position), glm::vec3(0, 1, 0));
+        //);*/
+        shadowCamera->updateVectors();
+        //shadowCamera->position += camera.dir * shadowMapSize * 0.5f;
+        shadowCamera->position -= shadowCamera->front * 100.0f;
+        shadowCamera->position -= shadowCamera->right * (shadowMap->getResolution() * shadowMapScale) * 0.5f;
+        shadowCamera->position -= shadowCamera->up * (shadowMap->getResolution() * shadowMapScale) * 0.5f;
+        shadowCamera->position = glm::floor(shadowCamera->position);
+        {
+            frustumCulling->update(shadowCamera->getProjView());
+            auto sctx = pctx.sub();
+            sctx.setDepthTest(true);
+            sctx.setCullFace(true);
+            sctx.setViewport({shadowMap->getResolution(), shadowMap->getResolution()});
+            shadowMap->bind();
+            setupWorldShader(shadowsShader, *shadowCamera, settings, 0.0f);
+            chunks->drawChunks(*shadowCamera, shadowsShader);
+            shadowMap->unbind();
+        }
+    }
 
     /* World render scope with diegetic HUD included */ {
         DrawContext wctx = pctx.sub();
-        postProcessing.use(wctx);
+        if (gbufferPipeline) {
+            if (gbuffer == nullptr) {
+                gbuffer = std::make_unique<GBuffer>(vp.x, vp.y);
+            } else {
+                gbuffer->resize(vp.x, vp.y);
+            }
+            wctx.setFramebuffer(gbuffer.get());
+        } else {
+            postProcessing.use(wctx);
+        }
 
         display::clearDepth();
 
@@ -370,25 +428,25 @@ void WorldRenderer::draw(
             ctx.setCullFace(true);
             renderLevel(ctx, camera, settings, uiDelta, pause, hudVisible);
             // Debug lines
-            if (hudVisible) {
-                if (debug) {
-                    guides->renderDebugLines(
-                        ctx, camera, *lineBatch, linesShader, showChunkBorders
-                    );
-                }
-                if (player.currentCamera == player.fpCamera) {
-                    renderHands(camera, delta);
-                }
-            }
+            // if (hudVisible) {
+            //     if (debug) {
+            //         guides->renderDebugLines(
+            //             ctx, camera, *lineBatch, linesShader, showChunkBorders
+            //         );
+            //     }
+            //     if (player.currentCamera == player.fpCamera) {
+            //         renderHands(camera, delta);
+            //     }
+            // }
         }
-        {
-            DrawContext ctx = wctx.sub();
-            texts->render(ctx, camera, settings, hudVisible, true);
-        }
-        renderBlockOverlay(wctx);
+        // {
+        //     DrawContext ctx = wctx.sub();
+        //     texts->render(ctx, camera, settings, hudVisible, true);
+        // }
+        //renderBlockOverlay(wctx);
     }
 
-    postProcessing.render(pctx, assets, timer);
+    postProcessing.render(pctx, assets, timer, camera, shadowMap->getDepthMap());
 }
 
 void WorldRenderer::renderBlockOverlay(const DrawContext& wctx) {

src/graphics/render/WorldRenderer.hpp

@@ -30,6 +30,8 @@ class PostProcessing;
 class DrawContext;
 class ModelBatch;
 class Assets;
+class ShadowMap;
+class GBuffer;
 struct EngineSettings;
 
 class WorldRenderer {
@@ -44,12 +46,18 @@ class WorldRenderer {
     std::unique_ptr<GuidesRenderer> guides;
     std::unique_ptr<ChunksRenderer> chunks;
     std::unique_ptr<Skybox> skybox;
+    std::unique_ptr<ShadowMap> shadowMap;
     Weather weather {};
+
+    std::unique_ptr<Camera> shadowCamera;
     
     float timer = 0.0f;
     bool debug = false;
     bool lightsDebug = false;
 
+    std::unique_ptr<GBuffer> gbuffer;
+    bool gbufferPipeline = false;
+
     /// @brief Render block selection lines
     void renderBlockSelection();
 

src/graphics/render/commons.hpp

@@ -14,11 +14,13 @@ struct ChunkVertex {
     glm::vec3 position;
     glm::vec2 uv;
     std::array<uint8_t, 4> color;
+    std::array<uint8_t, 4> normal;
 
     static constexpr VertexAttribute ATTRIBUTES[] = {
         {VertexAttribute::Type::FLOAT, false, 3},
         {VertexAttribute::Type::FLOAT, false, 2},
         {VertexAttribute::Type::UNSIGNED_BYTE, true, 4},
+        {VertexAttribute::Type::UNSIGNED_BYTE, true, 4},
         {{}, 0}};
 };
 

src/graphics/ui/GUI.cpp

@@ -38,6 +38,8 @@ GUI::GUI(Engine& engine)
         std::make_unique<Camera>(glm::vec3(), engine.getWindow().getSize().y);
     uicamera->perspective = false;
     uicamera->flipped = true;
+    uicamera->near = -1.0f;
+    uicamera->far = 1.0f;
 
     menu = std::make_shared<Menu>(*this);
     menu->setId("menu");

src/window/Camera.cpp

@@ -31,9 +31,9 @@ glm::mat4 Camera::getProjection() const {
     if (perspective) {
         return glm::perspective(fov * zoom, ar, near, far);
     } else if (flipped) {
-        return glm::ortho(0.0f, fov * ar, fov, 0.0f);
+        return glm::ortho(0.0f, fov * ar, fov, 0.0f, near, far);
     } else {
-        return glm::ortho(0.0f, fov * ar, 0.0f, fov);
+        return glm::ortho(0.0f, fov * ar, 0.0f, fov, near, far);
     }
 }
 
@@ -45,7 +45,8 @@ glm::mat4 Camera::getView(bool pos) const {
     if (perspective) {
         return glm::lookAt(camera_pos, camera_pos + front, up);
     } else {
-        return glm::translate(glm::mat4(1.0f), camera_pos);
+        return glm::lookAt(camera_pos, camera_pos + front, up);
+        //return glm::translate(glm::mat4(1.0f), camera_pos);
     }
 }