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);
+}

shaders/main.vert

@@ -0,0 +1,32 @@
+#version 450
+
+// Vertex inputs
+layout(location = 0) in vec3 in_pos;
+layout(location = 1) in vec3 in_normal;
+layout(location = 2) in vec2 in_tex_coord;
+
+// Uniform buffer
+layout(set = 0, binding = 0) uniform UniformBufferObject {
+    mat4 model;
+    mat4 view;
+    mat4 proj;
+} ubo;
+
+// Vertex outputs
+layout(location = 0) out vec3 out_world_position;
+layout(location = 1) out vec3 out_world_normal;
+layout(location = 2) out vec2 out_tex_coord;
+
+void main() {
+    // Transform position to world space
+    vec4 pos = ubo.model * vec4(in_pos, 1.0);
+    out_world_position = (pos / pos.w).xyz;
+
+    // Transform normal to world space
+    mat3 normal_matrix = transpose(inverse(mat3(ubo.model)));
+    out_world_normal = normal_matrix * in_normal;
+
+    // Calculate clip space position
+    gl_Position = ubo.proj * ubo.view * pos;
+    out_tex_coord = in_tex_coord;
+}