feat: render and manage textures :3

shaders/vert.glsl.vert

@@ -1,26 +1,38 @@
 #version 450
 
-// Matches Vertex struct attribute descriptions
+// INPUTS from Vertex Buffer (matching Vertex struct)
 layout(location = 0) in vec3 inPosition;
-layout(location = 1) in vec3 inColor;
-// layout(location = 2) in vec2 inTexCoord; // If you add texture coords
+layout(location = 1) in vec3 inNormal;
+layout(location = 2) in vec2 inTexCoord; // <<< MUST be vec2
 
-// Matches UniformBufferObject struct and descriptor set layout binding
-layout(binding = 0) uniform UniformBufferObject {
-    mat4 model;
+// UNIFORMS (Set 0)
+layout(set = 0, binding = 0) uniform UniformBufferObject {
     mat4 view;
     mat4 proj;
 } ubo;
 
-// Output to fragment shader
-layout(location = 0) out vec3 fragColor;
-// layout(location = 1) out vec2 fragTexCoord; // If you add texture coords
+// PUSH CONSTANTS
+layout(push_constant) uniform PushConstants {
+    mat4 model;
+} pushConstants;
+
+// OUTPUTS to Fragment Shader
+layout(location = 0) out vec3 fragNormal; // Location 0 for Normal
+layout(location = 1) out vec2 fragTexCoord; // Location 1 for TexCoord
 
 void main() {
-    // Transform position: Model -> World -> View -> Clip space
-    gl_Position = ubo.proj * ubo.view * ubo.model * vec4(inPosition, 1.0);
+    vec4 worldPos = pushConstants.model * vec4(inPosition, 1.0);
 
-    // Pass color (and other attributes) through
-    fragColor = inColor;
-    // fragTexCoord = inTexCoord;
+    // Calculate final position
+    gl_Position = ubo.proj * ubo.view * worldPos;
+
+    // --- Pass attributes to Fragment Shader ---
+
+    // Pass world-space normal (adjust calculation if needed)
+    // Ensure fragNormal is assigned a vec3
+    fragNormal = normalize(mat3(transpose(inverse(pushConstants.model))) * inNormal);
+
+    // Pass texture coordinates (ensure inTexCoord is vec2)
+    // Ensure fragTexCoord is assigned a vec2
+    fragTexCoord = inTexCoord;
 }