minor refactor, start working on chunk border rendering

shaders/colored.frag

@@ -0,0 +1,8 @@
+#version 150 core
+
+out vec4 color;
+uniform vec4 u_color;
+
+void main() {
+  color = u_color;
+}

shaders/colored.vert

@@ -0,0 +1,11 @@
+#version 150 core
+
+in vec3 position;
+uniform mat4 model;
+uniform mat4 perspective;
+uniform mat4 view;
+
+void main() {
+  mat4 modelview = view * model;
+  gl_Position = perspective * modelview * vec4(position, 1.);
+}

shaders/selection_box.vert

@@ -1,10 +1,10 @@
 #version 150 core
 
 in vec3 position;
-uniform vec3 u_position;
+uniform ivec3 u_position;
 uniform mat4 perspective;
 uniform mat4 view;
 
 void main() {
-  gl_Position = perspective * view * vec4(position + u_position, 1.);
+  gl_Position = perspective * view * vec4(position + vec3(u_position), 1.);
 }

src/prefabs.rs

@@ -59,10 +59,14 @@ pub struct ChunkShaderPrefab(pub Program);
 #[derive(Unique)]
 pub struct SelBoxShaderPrefab(pub Program);
 
+#[derive(Unique)]
+pub struct BasicColoredShaderPrefab(pub Program);
+
 pub fn load_prefabs(
   storages: AllStoragesView,
   renderer: NonSendSync<UniqueView<Renderer>>
 ) {
+  log::info!("Loading textures...");
   storages.add_unique_non_send_sync(BlockTexturesPrefab(
     load_texture2darray_prefab::<BlockTexture, _>(
       "./assets/blocks/".into(), 
@@ -70,8 +74,11 @@ pub fn load_prefabs(
       MipmapsOption::AutoGeneratedMipmaps
     )
   ));
+
+  log::info!("Compiling shaders...");
   storages.add_unique_non_send_sync(ChunkShaderPrefab(
     include_shader_prefab!(
+      "world",
       "../shaders/world.vert",
       "../shaders/world.frag",
       &renderer.display
@@ -79,9 +86,18 @@ pub fn load_prefabs(
   ));
   storages.add_unique_non_send_sync(SelBoxShaderPrefab(
     include_shader_prefab!(
+      "selection_box",
       "../shaders/selection_box.vert",
       "../shaders/selection_box.frag",
       &renderer.display
     )
   ));
+  storages.add_unique_non_send_sync(BasicColoredShaderPrefab(
+    include_shader_prefab!(
+      "colored",
+      "../shaders/colored.vert",
+      "../shaders/colored.frag",
+      &renderer.display
+    )
+  ));
 }

src/prefabs/shaders.rs

@@ -1,11 +1,10 @@
 
 
 macro_rules! include_shader_prefab {
-  ($vert: literal, $frag: literal, $geom: literal, $facade: expr) => {
+  ($name: literal, $vert: literal, $frag: literal, $geom: literal, $facade: expr) => {
     { 
       use ::glium::Program;
-      log::info!("↓↓↓ compiling shader prefab ↓↓↓");
-      log::info!("{} {} {}", $vert, $frag, $geom);
+      log::info!("compiling shader {}", $name);
       Program::from_source(
         &*$facade,
         include_str!($vert),
@@ -14,11 +13,10 @@ macro_rules! include_shader_prefab {
       ).expect("Failed to compile gpu program")
     }
   };
-  ($vert: literal, $frag: literal, $facade: expr) => {
+  ($name: literal, $vert: literal, $frag: literal, $facade: expr) => {
     {
       use ::glium::Program;
-      log::info!("↓↓↓ compiling shader prefab ↓↓↓");
-      log::info!("{} {}", $vert, $frag);
+      log::info!("compiling shader {}", $name);
       Program::from_source(
         &*$facade,
         include_str!($vert),

src/prefabs/texture.rs

@@ -12,7 +12,7 @@ pub fn load_texture2darray_prefab<
   facade: &E,
   mipmaps: MipmapsOption,
 ) -> SrgbTexture2dArray {
-  log::info!("↓↓↓ loading textures {} ↓↓↓", directory.as_os_str().to_str().unwrap());
+  log::info!("started loading {}", directory.as_os_str().to_str().unwrap());
   //Load raw images
   let tex_files: Vec<&'static str> = T::iter().map(|x| x.file_name()).collect();
   let raw_images: Vec<RawImage2d<u8>> = tex_files.par_iter().map(|&file_name| {

src/rendering/selection_box.rs

@@ -1,3 +1,4 @@
+use glam::Mat4;
 use shipyard::{View, IntoIter, NonSendSync, UniqueViewMut, UniqueView};
 use glium::{
   Surface, 
@@ -33,7 +34,7 @@ pub fn render_selection_box(
     &program.0,
     &uniform! {
       u_color: [0., 0., 0., 0.5_f32],
-      u_position: lookat.block_position.as_vec3().to_array(),
+      u_position: lookat.block_position.to_array(),
       perspective: camera.perspective_matrix.to_cols_array_2d(),
       view: camera.view_matrix.to_cols_array_2d(),
     },

src/rendering/world.rs

@@ -21,7 +21,8 @@ use crate::{
   camera::Camera, 
   prefabs::{
     ChunkShaderPrefab,
-    BlockTexturesPrefab,
+    BlockTexturesPrefab, 
+    BasicColoredShaderPrefab,
   },
   world::{
     ChunkStorage, 
@@ -29,7 +30,7 @@ use crate::{
     chunk::CHUNK_SIZE,
   }, 
 };
-use super::RenderTarget;
+use super::{RenderTarget, primitives::SimpleBoxBuffers};
 
 #[derive(Clone, Copy)]
 pub struct ChunkVertex {
@@ -105,3 +106,28 @@ pub fn draw_world(
     }
   }
 }
+
+// this doesn't use culling!
+// pub fn draw_chunk_borders(
+//   mut target: NonSendSync<UniqueViewMut<RenderTarget>>, 
+//   chunks: UniqueView<ChunkStorage>,
+//   buffers: NonSendSync<UniqueView<SimpleBoxBuffers>>,
+//   program: NonSendSync<UniqueView<BasicShaderPrefab>>,
+//   camera: View<Camera>,
+// ) {
+//   for (&position, chunk) in &chunks.chunks {
+//     let world_position = position.as_vec3() * CHUNK_SIZE as f32;
+//     target.0.draw(
+//       &buffers.0,
+//       &buffers.1,
+//       &program.0,
+//       &uniform! {
+//         position_offset: world_position.to_array(),
+//         view: view,
+//         perspective: perspective,
+//         tex: texture_sampler,
+//       },
+//       &draw_parameters
+//     ).unwrap();
+//   }
+// }