split render pipelines

res/shaders/effects/default.glsl

@@ -1,50 +1,3 @@
-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);
+    return texture(u_screen, v_uv);
 }

res/shaders/effects/ssao.glsl

@@ -1,11 +1,39 @@
-uniform vec3 samples[64];
+uniform vec3 u_ssaoSamples[64];
+
+int kernelSize = 32;
+float radius = 0.25;
+float bias = 0.025;
 
 vec4 effect() {
-    vec2 noiseScale = u_screenSize / 4.0; 
+    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);
+    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 = 1.0;
+    if (u_enableShadows) {
+        occlusion = 0.0;
+        for (int i = 0; i < kernelSize; i++) {
+            vec3 samplePos = tbn * u_ssaoSamples[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);
+    }
+
+    return vec4(color * occlusion, 1.0);
 }