progress?

shaders/triangle.frag

@@ -1,11 +1,12 @@
 #version 450
+#extension GL_ARB_separate_shader_objects : enable
 
 layout(location = 0) in vec2 tex_coords;
 
-layout(location = 0) out vec4 f_color;
+layout(location = 0) out vec4 out_color;
 
-layout(set = 0, binding = 0) uniform sampler2D tex;
+layout(binding = 1) uniform sampler2D tex;
 
 void main() {
-    f_color = texture(tex, tex_coords);
+    out_color = texture(tex, tex_coords);
 }