postprocess render pass

src/shaders/fullscreen.vert

@@ -1,6 +1,6 @@
 #version 450
 
-layout(location=0) out vec2 vert_uv;
+layout(location=0) out vec2 _InUV;
 
 const vec2 positions[6] = vec2[6](
     vec2(-1.0, 1.0),
@@ -14,6 +14,6 @@ const vec2 positions[6] = vec2[6](
 
 void main() 
 {
-    vert_uv = positions[gl_VertexIndex];
+    _InUV = positions[gl_VertexIndex];
     gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
 }

src/shaders/postprocess/main.frag

@@ -0,0 +1,22 @@
+#version 450
+
+layout(set=0, binding=0) uniform texture2D _InTexture;
+layout(set=0, binding=1) uniform sampler _InTextureSampler;
+layout(location=0) in vec2 _InUV;
+layout(location=0) out vec4 _OutColor;
+
+
+void main() 
+{    
+    // Get color
+    vec2 uv = vec2(_InUV.x+1.0, -_InUV.y+1.0) * 0.5;
+    vec3 color = texture(sampler2D(_InTexture, _InTextureSampler), uv).rgb;
+
+    // Viniette
+    color = vec3(1,1,1);
+
+    color *= smoothstep(0.0, 0.2, pow(1.0-length(_InUV), 1.5)) + 0.5;
+
+    // Return
+    _OutColor = vec4(color, 1.0);
+}

src/shaders/raytrace/main.frag

@@ -1,4 +1,3 @@
-// shader.frag
 #version 450
 
 struct Material {
@@ -7,8 +6,8 @@ struct Material {
 };
 
 // Variables
-layout(location=0) in vec2 vert_uv;
-layout(location=0) out vec4 out_color;
+layout(location=0) in vec2 _InUV;
+layout(location=0) out vec4 _OutColor;
 
 layout(set=0,binding=0) uniform Uniforms {
     mat4 _ViewMatrix;
@@ -61,7 +60,7 @@ vec3 randomHemisphere(vec3 dir)
 vec3 solve()
 {
     // Calculate ray direction
-    vec3 view_dir = (_ProjMatrixInv * vec4(vert_uv, 0, 1)).xyz;
+    vec3 view_dir = (_ProjMatrixInv * vec4(_InUV, 0, 1)).xyz;
     vec3 rayDir = normalize(_ViewMatrix * vec4(view_dir,0)).xyz;
     Ray primaryRay = Ray(_CamPos / SCALE, rayDir);
 
@@ -91,6 +90,6 @@ vec3 solve()
 
 void main() 
 {
-    seed = 420 * vert_uv.x + 1337 * vert_uv.y + _Time * 1234;
-    out_color = vec4(solve(), 1);
+    seed = 420 * _InUV.x + 1337 * _InUV.y + _Time * 1234;
+    _OutColor = vec4(solve(), 1);
 }