move to GLSL (rip rust-gpu 😭)

shaders/main.frag

@@ -0,0 +1,17 @@
+#version 450
+
+layout(location = 0) in vec3 frag_world_position;
+layout(location = 1) in vec3 frag_world_normal;
+layout(location = 2) in vec2 frag_tex_coord;
+
+layout(set = 0, binding = 1) uniform sampler2D tex_sampler;
+
+layout(location = 0) out vec4 out_color;
+
+void main() {
+    // Sample the texture
+    vec4 base_color = texture(tex_sampler, frag_tex_coord);
+    
+    // Output final color
+    out_color = vec4(base_color.rgb, base_color.a);
+}