black triangle for platformer binary

good god this is ugly code

Cargo.toml

@@ -2,7 +2,7 @@
 name = "opengl_rust"
 version = "0.1.0"
 authors = ["_"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

src/bin/platformer.rs

@@ -1,6 +1,96 @@
-use opengl_rust::prelude::*;
+use std::{
+	collections::HashMap,
+};
 
 use anyhow::Result;
+use maplit::hashmap;
+
+use opengl_rust::{
+	prelude::*,
+	gl_state::*,
+	renderable_model::{
+		attributes,
+		RenderableModel,
+	},
+	shader_closure::ShaderLookup,
+	texture::Texture,
+};
+
+mod uniforms {
+use iota::iota;
+iota! {
+pub const 
+	  MVP: u32 = iota;
+	, OBJECT_SPACE_LIGHT
+	, OBJECT_SPACE_SKY
+	, ALBEDO
+	, MIN_ALBEDO
+	, MIN_BRIGHT
+	, TEXTURE
+}
+}
+
+struct GameGraphics {
+	passes: Vec <Pass>,
+	
+	shaders: Vec <ShaderClosure>,
+	shader_lookup: HashMap <u32, usize>,
+	
+	mesh_cube: RenderableModel,
+	mesh_sky: RenderableModel,
+	
+	text_stream: TriangleStream,
+	
+	texture_sky: Texture,
+}
+
+impl ShaderLookup for GameGraphics {
+	fn lookup <'a> (&'a self, id: u32) -> &'a ShaderClosure {
+		&self.shaders [self.shader_lookup [&id]]
+	}
+}
+
+impl GameGraphics {
+	fn draw (
+		&self,
+		gl_state: &mut GlState,
+	) {
+		use uniforms as u;
+		
+		let white = color_from_255 ((255.0, 255.0, 255.0));
+		let black = color_from_255 ((0.0, 0.0, 0.0));
+		
+		let screen_size = (1280.0, 720.0);
+		
+		let proj_mat = Mat4::perspective_rh_gl (30.0f32.to_radians (), screen_size.0 / screen_size.1, 0.125, 200.0);
+		
+		let view_mat = proj_mat * Mat4::from_rotation_x (-90.0f32.to_radians ());
+		let world_model_mat = Mat4::IDENTITY;
+		
+		self.passes [0].with (gl_state, || {
+			glezz::clear_color (1.0f32, 0.0f32, 1.0f32, 1.0f32);
+			glezz::clear (gl::COLOR_BUFFER_BIT | gl::DEPTH_BUFFER_BIT | gl::STENCIL_BUFFER_BIT);
+		});
+		
+		self.passes [1].with_shader (gl_state, self, |shader_vars| {
+			let attrs = shader_vars.attrs;
+			let unis = shader_vars.unis;
+			
+			{
+				let sky_mvp_mat = view_mat * Mat4::from_scale ((64.0, 64.0, 64.0).into ());
+				
+				self.texture_sky.bind ();
+				glezz::uniform_matrix_4fv (unis [&u::MVP], &sky_mvp_mat);
+				glezz::uniform_3fv (unis [&u::ALBEDO], &white);
+				glezz::uniform_3fv (unis [&u::MIN_BRIGHT], &white);
+				glezz::uniform_3fv (unis [&u::MIN_ALBEDO], &black);
+				glezz::uniform_1i (unis [&u::TEXTURE], 0);
+				
+				self.mesh_sky.draw_all (attrs, |_| true);
+			}
+		});
+	}
+}
 
 #[tokio::main]
 async fn main () -> Result <()> {
@@ -29,10 +119,140 @@ async fn main () -> Result <()> {
 	let mut time_step = TimeStep::new (60, 1000);
 	let mut graphics_frames = 0;
 	
-	let shader_program = shader::shader_from_files ("shaders/terrain-vert.glsl", "shaders/terrain-frag.glsl");
-	let shader_locations = ShaderLocations::new (&shader_program)?;
+	let uniform_names = {
+		vec! [
+			(uniforms::MVP, "uni_mvp"),
+			(uniforms::OBJECT_SPACE_LIGHT, "uni_object_space_light"),
+			(uniforms::OBJECT_SPACE_SKY, "uni_object_space_sky"),
+			(uniforms::ALBEDO, "uni_albedo"),
+			(uniforms::MIN_ALBEDO, "uni_min_albedo"),
+			(uniforms::MIN_BRIGHT, "uni_min_bright"),
+			(uniforms::TEXTURE, "uni_texture"),
+		]
+	};
+	
+	let attr_names = {
+		vec! [
+			(attributes::POS, "attr_pos"),
+			(attributes::UV, "attr_uv"),
+			(attributes::NORMAL, "attr_normal"),
+		]
+	};
+	
+	let shaders: Vec <_> = [
+		("shaders/pumpkin-vert.glsl", "shaders/pumpkin-frag.glsl"),
+		("shaders/shadow-vert.glsl", "shaders/shadow-frag.glsl"),
+		("shaders/terrain-vert.glsl", "shaders/terrain-frag.glsl"),
+	].into_iter ()
+	.map (|(v, f)| {
+		ShaderClosure::new (shader_from_files (v, f), &uniform_names, &attr_names)
+	})
+	.collect ();
 	
 	let mesh_cube = renderable_from_iqm_file ("cube.iqm");
+	let mesh_sky = renderable_from_iqm_file ("sky-sphere.iqm");
+	
+	let passes = vec![
+		// Clear everything
+		Pass {
+			iso: IsoGlState {
+				shader_id: None,
+				flags: Default::default (),
+				front_face: None,
+				stencil: None,
+				depth_func: None,
+				color_mask: Some ((1, 1, 1, 1)),
+				depth_mask: Some (1),
+				stencil_mask: Some (255),
+			},
+		},
+		// Draw world
+		Pass {
+			iso: IsoGlState {
+				shader_id: Some (shaders [0].get_id ()),
+				flags: hashmap! {
+					gl::CULL_FACE => true,
+					gl::DEPTH_TEST => true,
+					gl::TEXTURE_2D => true,
+					gl::STENCIL_TEST => false,
+				},
+				front_face: Some (FrontFace::Cw),
+				stencil: Some (StencilState {
+					func: StencilFuncState {
+						func: StencilFunc::Always,
+						reference: 0,
+						mask: 0,
+					},
+					op: StencilOpState {
+						sfail: StencilOp::Keep,
+						dpfail: StencilOp::Keep,
+						dppass: StencilOp::Keep,
+					},
+				}),
+				depth_func: Some (DepthFunc::Less),
+				color_mask: Some ((1, 1, 1, 1)),
+				depth_mask: Some (1),
+				stencil_mask: Some (0),
+			},
+		},
+		// Draw UI
+		Pass {
+			iso: IsoGlState {
+				shader_id: Some (shaders [0].get_id ()),
+				flags: hashmap! {
+					gl::CULL_FACE => false,
+					gl::DEPTH_TEST => false,
+					gl::TEXTURE_2D => true,
+					gl::STENCIL_TEST => false,
+				},
+				front_face: None,
+				stencil: None,
+				depth_func: Some (DepthFunc::Less),
+				color_mask: Some ((1, 1, 1, 1)),
+				depth_mask: Some (1),
+				stencil_mask: Some (0),
+			},
+		},
+	];
+	
+	let text_stream = TriangleStream {
+		verts: gpu_buffers::VertexBuffer::streaming (4 * 5 * 6 * 1024),
+		indices: {
+			let quad = [
+				0, 1, 2,
+				0, 2, 3,
+			];
+			
+			let v: Vec <u32> = (0u32..1024).map (|i| {
+				quad.iter ().map (move |j| 4 * i + j)
+			}).flatten ().collect ();
+			gpu_buffers::IndexBuffer::from_slice_u32 (&v)
+		}
+	};
+	
+	let shader_lookup = HashMap::from_iter (shaders.iter ().enumerate ()
+	.map (|(i, s)| {
+		(s.get_id (), i)
+	}));
+	
+	shaders [0].with (None, |shader_vars| {
+		let attrs = shader_vars.attrs;
+		glezz::enable_vertex_attrib_array (attrs [attributes::POS]);
+		glezz::enable_vertex_attrib_array (attrs [attributes::UV]);
+		glezz::enable_vertex_attrib_array (attrs [attributes::NORMAL]);
+	});
+	
+	let graphics = GameGraphics {
+		mesh_cube,
+		mesh_sky,
+		passes,
+		shader_lookup,
+		shaders,
+		text_stream,
+		texture_sky: Texture::from_file ("sky.png"),
+	};
+	
+	let mut gl_state = Default::default ();
 	
 	'running: loop {
 		let _frames_to_do = time_step.step ();
@@ -49,12 +269,10 @@ async fn main () -> Result <()> {
 		
 		window.gl_make_current (&gl_ctx).unwrap ();
 		
-		glezz::enable (gl::DEPTH_TEST);
-		
-		glezz::clear_color (0.392f32, 0.710f32, 0.965f32, 1.0f32);
-		glezz::clear (gl::COLOR_BUFFER_BIT | gl::DEPTH_BUFFER_BIT | gl::STENCIL_BUFFER_BIT);
+		graphics.draw (&mut gl_state);
 		
 		window.gl_swap_window ();
+		graphics_frames += 1;
 		
 		tokio::time::sleep (Duration::from_millis (15)).await;
 	}
@@ -70,7 +288,7 @@ struct ShaderLocations {
 }
 
 impl ShaderLocations {
-	pub fn new (shader_program: &shader::ShaderProgram) -> anyhow::Result <Self> 
+	pub fn new (shader_program: &opengl_rust::shader::ShaderProgram) -> anyhow::Result <Self> 
 	{
 		let attr = |name: &str| shader_program.get_attribute_location (&CString::new (name.as_bytes ())?).try_into ().context ("Attribute location negative");
 		let uni = |name: &str| shader_program.get_uniform_location (&CString::new (name.as_bytes ())?).try_into ().context ("Uniform location bad");
@@ -83,3 +301,20 @@ impl ShaderLocations {
 		})
 	}
 }
+
+struct TriangleStream {
+	pub verts: gpu_buffers::VertexBuffer,
+	pub indices: gpu_buffers::IndexBuffer,
+}
+
+fn color_from_255 <V> (rgb: V) -> Vec3
+where V: Into <Vec3>
+{
+	let rgb: Vec3 = rgb.into ();
+	
+	Vec3::from ((
+		rgb.x / 255.0,
+		rgb.y / 255.0,
+		rgb.z / 255.0
+	))
+}

src/prelude.rs

@@ -31,6 +31,7 @@ pub use crate::{
 	network_protocol::*,
 	quinn_common::make_client_endpoint,
 	renderable_model::renderable_from_iqm_file,
-	shader,
+	shader::shader_from_files,
+	shader_closure::ShaderClosure,
 	timestep::TimeStep,
 };