Add scene serializer components

.gitignore

@@ -54,6 +54,7 @@ Thumbs.db
 .vscode/
 .idea/
 *.code-workspace
+imgui.ini
 
 # vcpkg binary cache and top-level helper artifacts (keep vcpkg.exe if present)
 .vcpkg_binary_cache

Assets/icons/camera_icon.ppm

@@ -0,0 +1,12 @@
+P3
+# Genesis Editor camera icon (8x8), magenta background is transparent key
+8 8
+255
+255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255
+255 0 255 255 0 255 220 220 220 220 220 220 220 220 220 220 220 220 255 0 255 255 0 255
+255 0 255 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 255 0 255
+255 0 255 220 220 220 220 220 220 255 255 255 255 255 255 220 220 220 220 220 220 255 0 255
+255 0 255 220 220 220 220 220 220 255 255 255 255 255 255 220 220 220 220 220 220 255 0 255
+255 0 255 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 220 255 0 255
+255 0 255 255 0 255 220 220 220 220 220 220 220 220 220 220 220 220 255 0 255 255 0 255
+255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255

Assets/icons/light_dir_icon.ppm

@@ -0,0 +1,12 @@
+P3
+# Genesis Editor directional light icon (8x8), magenta background is transparent key
+8 8
+255
+255 0 255 255 0 255 255 0 255 220 220 220 255 0 255 255 0 255 255 0 255 255 0 255
+255 0 255 255 0 255 220 220 220 255 255 255 220 220 220 255 0 255 255 0 255 255 0 255
+255 0 255 220 220 220 255 255 255 255 255 255 255 255 255 220 220 220 255 0 255 255 0 255
+220 220 220 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 220 220 220 255 0 255
+255 0 255 220 220 220 255 255 255 255 255 255 255 255 255 220 220 220 255 0 255 255 0 255
+255 0 255 255 0 255 220 220 220 255 255 255 220 220 220 255 0 255 255 0 255 255 0 255
+255 0 255 255 0 255 255 0 255 220 220 220 255 0 255 255 0 255 255 0 255 255 0 255
+255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255

Assets/icons/light_point_icon.ppm

@@ -0,0 +1,12 @@
+P3
+# Genesis Editor point light icon (8x8), magenta background is transparent key
+8 8
+255
+255 0 255 255 0 255 255 0 255 220 220 220 255 0 255 255 0 255 255 0 255 255 0 255
+255 0 255 255 0 255 220 220 220 220 220 220 220 220 220 255 0 255 255 0 255 255 0 255
+255 0 255 220 220 220 220 220 220 255 255 255 220 220 220 220 220 220 255 0 255 255 0 255
+220 220 220 220 220 220 255 255 255 255 255 255 255 255 255 220 220 220 220 220 220 255 0 255
+255 0 255 220 220 220 220 220 220 255 255 255 220 220 220 220 220 220 255 0 255 255 0 255
+255 0 255 255 0 255 220 220 220 220 220 220 220 220 220 255 0 255 255 0 255 255 0 255
+255 0 255 255 0 255 255 0 255 220 220 220 255 0 255 255 0 255 255 0 255 255 0 255
+255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255 255 0 255

Assets/models/triangle.obj.meta

@@ -0,0 +1,6 @@
+# Genesis Asset Meta
+guid=947aba47-02b1-4204-4105-e2f708a9f18b
+importer=model
+source_timestamp=1766818049
+setting=flip_uvs|0
+setting=gen_normals|1

Assets/shaders/deferred_lighting.frag

@@ -8,12 +8,15 @@ uniform sampler2D gPosition;
 uniform sampler2D gNormal;
 uniform sampler2D gAlbedoSpec;
 uniform sampler2D shadowMap;
+uniform vec2 uShadowMapTexelSize;
 
 uniform vec3 uLightDir;
 uniform vec3 uLightColor;
 uniform float uLightIntensity;
 uniform vec3 viewPos;
 uniform mat4 lightSpaceMatrix;
+uniform float uBloomThreshold;
+uniform float uShadowPcfRadius;
 
 struct PointLight {
     vec3 position;
@@ -72,11 +75,21 @@ float ShadowCalculation(vec4 fragPosLightSpace, vec3 normal, vec3 lightDir)
 {
     vec3 projCoords = fragPosLightSpace.xyz / fragPosLightSpace.w;
     projCoords = projCoords * 0.5 + 0.5;
-    if(projCoords.z > 1.0) return 0.0;
-    float closestDepth = texture(shadowMap, projCoords.xy).r; 
+    if (projCoords.z > 1.0) return 0.0;
+
     float currentDepth = projCoords.z;
     float bias = max(0.05 * (1.0 - dot(normal, lightDir)), 0.005);
-    float shadow = currentDepth - bias > closestDepth  ? 1.0 : 0.0;
+    float radius = max(uShadowPcfRadius, 0.5);
+    vec2 texelSize = max(uShadowMapTexelSize, vec2(1.0 / 2048.0)) * radius;
+
+    float shadow = 0.0;
+    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;
+        }
+    }
+    shadow /= 9.0;
     return shadow;
 }
 
@@ -169,7 +182,7 @@ void main()
 
     // Check for brightness for bloom
     float brightness = dot(FragColor.rgb, vec3(0.2126, 0.7152, 0.0722));
-    if(brightness > 1.0)
+    if(brightness > uBloomThreshold)
         BrightColor = vec4(FragColor.rgb, 1.0);
     else
         BrightColor = vec4(0.0, 0.0, 0.0, 1.0);

Assets/shaders/pbr.frag

@@ -16,21 +16,32 @@ uniform int uHasBaseColorTexture = 0;
 uniform vec3 uLightDir = vec3(0.5, 0.5, 0.8);
 uniform vec3 uLightColor = vec3(1.0, 1.0, 1.0);
 uniform float uLightIntensity = 1.0;
+uniform float uBloomThreshold;
+uniform float uShadowPcfRadius;
 
 uniform sampler2D shadowMap;
+uniform vec2 uShadowMapTexelSize;
 
-float ShadowCalculation(vec4 fragPosLightSpace)
+float ShadowCalculation(vec4 fragPosLightSpace, vec3 normal, vec3 lightDir)
 {
     vec3 projCoords = fragPosLightSpace.xyz / fragPosLightSpace.w;
     projCoords = projCoords * 0.5 + 0.5;
-    float closestDepth = texture(shadowMap, projCoords.xy).r; 
+    if (projCoords.z > 1.0)
+        return 0.0;
+
     float currentDepth = projCoords.z;
-    float bias = 0.005;
-    float shadow = currentDepth - bias > closestDepth  ? 1.0 : 0.0;
+    float bias = max(0.05 * (1.0 - dot(normal, lightDir)), 0.005);
+    float radius = max(uShadowPcfRadius, 0.5);
+    vec2 texelSize = max(uShadowMapTexelSize, vec2(1.0 / 2048.0)) * radius;
 
-    if(projCoords.z > 1.0)
-        shadow = 0.0;
-
+    float shadow = 0.0;
+    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;
+        }
+    }
+    shadow /= 9.0;
     return shadow;
 }
 
@@ -44,7 +55,7 @@ void main() {
         baseColor *= texture(uBaseColorTexture, vUV);
     }
 
-    float shadow = ShadowCalculation(vFragPosLightSpace);
+    float shadow = ShadowCalculation(vFragPosLightSpace, n, lightDir);
 
     vec3 diffuse = baseColor.rgb * NdotL * uLightColor * uLightIntensity;
     vec3 viewDir = normalize(vec3(0.0,0.0,1.0)); // TODO: Pass camera pos
@@ -59,7 +70,7 @@ void main() {
 
     // Check whether fragment output is higher than threshold, if so output as brightness color
     float brightness = dot(FragColor.rgb, vec3(0.2126, 0.7152, 0.0722));
-    if(brightness > 1.0)
+    if(brightness > uBloomThreshold)
         BrightColor = vec4(FragColor.rgb, 1.0);
     else
         BrightColor = vec4(0.0, 0.0, 0.0, 1.0);

Assets/shaders/postprocess.frag

@@ -7,6 +7,36 @@ uniform sampler2D uBloomBlur;
 uniform float uExposure;
 uniform float uGamma;
 uniform bool uBloom;
+uniform bool uVignetteEnabled;
+uniform float uVignetteIntensity;
+uniform float uVignetteRadius;
+uniform float uVignetteSoftness;
+uniform sampler2D uLUT;
+uniform bool uLUTEnabled;
+uniform float uLUTIntensity;
+uniform float uLUTSize;
+
+vec3 ApplyLUT(vec3 color)
+{
+    float size = max(uLUTSize, 2.0);
+    vec3 c = clamp(color, 0.0, 1.0);
+
+    float slice = c.b * (size - 1.0);
+    float slice0 = floor(slice);
+    float slice1 = min(slice0 + 1.0, size - 1.0);
+    float lerpFactor = slice - slice0;
+
+    float texelSize = 1.0 / (size * size);
+    float texelSizeY = 1.0 / size;
+
+    float x0 = (slice0 * size + c.r * (size - 1.0)) * texelSize + texelSize * 0.5;
+    float x1 = (slice1 * size + c.r * (size - 1.0)) * texelSize + texelSize * 0.5;
+    float y = (c.g * (size - 1.0)) * texelSizeY + texelSizeY * 0.5;
+
+    vec3 c0 = texture(uLUT, vec2(x0, y)).rgb;
+    vec3 c1 = texture(uLUT, vec2(x1, y)).rgb;
+    return mix(c0, c1, lerpFactor);
+}
 
 void main()
 {
@@ -20,6 +50,22 @@ void main()
 
     // Gamma correction
     result = pow(result, vec3(1.0 / uGamma));
+
+    // Vignette
+    if (uVignetteEnabled) {
+        float dist = distance(TexCoords, vec2(0.5));
+        float edge0 = max(uVignetteRadius - uVignetteSoftness, 0.0);
+        float edge1 = max(uVignetteRadius, edge0 + 0.0001);
+        float vignette = 1.0 - smoothstep(edge0, edge1, dist);
+        float mixAmt = clamp(uVignetteIntensity, 0.0, 1.0);
+        result *= mix(1.0, vignette, mixAmt);
+    }
+
+    // LUT
+    if (uLUTEnabled) {
+        vec3 lutColor = ApplyLUT(result);
+        result = mix(result, lutColor, clamp(uLUTIntensity, 0.0, 1.0));
+    }
 
     FragColor = vec4(result, 1.0);
 }