Reflective cube

shaders/cube.frag

@@ -2,17 +2,22 @@
 // vim: ft=c
 // clang-format off
 
+layout(binding = 1) uniform samplerCube combined_image;
+
 layout(location = 0) out vec4 outColor;
 
 layout(location = 0) in vec4 normal;
 layout(location = 1) in vec4 pos_pre;
+layout(location = 2) in vec4 view_orig;
 
 layout(push_constant, std430) uniform pc {
   layout(offset=48) vec4 data;
 };
 
 void main() {
-  outColor = vec4(data.rgb*(1.0+dot(normal.xyz, normalize(vec3(-0.7, -0.5, -0.1))))/2.0, 1.0);
+  vec4 ray = pos_pre - view_orig;
+  outColor = texture(combined_image, vec3(reflect(ray, normal)));
+  // outColor = vec4(data.rgb*(1.0+dot(normal.xyz, normalize(vec3(-0.7, -0.5, -0.1))))/2.0, 1.0);
 //if(pos_post.z <= 0.0) {
 //  outColor = vec4(1.0);
 //}

shaders/cube.vert

@@ -19,6 +19,7 @@ layout(push_constant, std430) uniform pc {
 
 layout (location = 0) out vec4 normal;
 layout (location = 1) out vec4 pos_pre;
+layout (location = 2) out vec4 view_orig;
 
 const float PI = 3.14159;
 // Forgive me for I have sinned
@@ -28,6 +29,7 @@ void main() {
   // assign outs
   normal = pos.posnrm[gl_VertexIndex].norm;
   pos_pre = pos.posnrm[gl_VertexIndex].pos;
+  view_orig = cam_orig;
 
   // define constants
   const float zFar = 100.0;