supporting up to 10 textures

docs/INSTRUCTIONS.md

@@ -66,4 +66,4 @@ A/B Street binary releases contain pre-built maps that combine data from:
 - DejaVuSans.ttf (https://dejavu-fonts.github.io/License.html)
 - Puget Sound Regional Council
   (https://www.psrc.org/activity-based-travel-model-soundcast)
-- http://www.textures4photoshop.com for water textures
+- http://www.textures4photoshop.com for textures

ezgui/src/assets/fragment_140.glsl

@@ -5,7 +5,16 @@ uniform vec3 transform;
 // (window width, window height, hatching == 1.0)
 uniform vec3 window;
 
-uniform sampler2D tex;
+uniform sampler2D tex0;
+uniform sampler2D tex1;
+uniform sampler2D tex2;
+uniform sampler2D tex3;
+uniform sampler2D tex4;
+uniform sampler2D tex5;
+uniform sampler2D tex6;
+uniform sampler2D tex7;
+uniform sampler2D tex8;
+uniform sampler2D tex9;
 
 in vec4 pass_color;
 in vec3 pass_tex_coords;
@@ -14,8 +23,26 @@ out vec4 f_color;
 void main() {
     if (pass_tex_coords[0] == 0.0) {
         f_color = pass_color;
-    } else {
-        f_color = texture(tex, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 1.0) {
+        f_color = texture(tex0, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 2.0) {
+        f_color = texture(tex1, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 3.0) {
+        f_color = texture(tex2, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 4.0) {
+        f_color = texture(tex3, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 5.0) {
+        f_color = texture(tex4, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 6.0) {
+        f_color = texture(tex5, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 7.0) {
+        f_color = texture(tex6, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 8.0) {
+        f_color = texture(tex7, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 9.0) {
+        f_color = texture(tex8, vec2(pass_tex_coords[1], pass_tex_coords[2]));
+    } else if (pass_tex_coords[0] == 10.0) {
+        f_color = texture(tex9, vec2(pass_tex_coords[1], pass_tex_coords[2]));
     }
 
     if (window[2] == 1.0) {

ezgui/src/canvas.rs

@@ -39,7 +39,7 @@ pub struct Canvas {
     pub(crate) lctrl_held: bool,
 
     // TODO Definitely a weird place to stash this!
-    pub(crate) textures: HashMap<String, Texture2d>,
+    pub(crate) textures: Vec<(String, Texture2d)>,
 }
 
 impl Canvas {
@@ -70,7 +70,7 @@ impl Canvas {
             hide_modal_menus: false,
             lctrl_held: false,
 
-            textures: HashMap::new(),
+            textures: Vec::new(),
         }
     }
 

ezgui/src/drawing.rs

@@ -45,10 +45,9 @@ impl<'b> glium::uniforms::Uniforms for Uniforms<'b> {
     fn visit_values<'a, F: FnMut(&str, UniformValue<'a>)>(&'a self, mut output: F) {
         output("transform", UniformValue::Vec3(self.transform));
         output("window", UniformValue::Vec3(self.window));
-        output(
-            "tex",
-            UniformValue::Texture2d(&self.canvas.textures["assets/water_texture.png"], None),
-        );
+        for (idx, (_, tex)) in self.canvas.textures.iter().enumerate() {
+            output(&format!("tex{}", idx), UniformValue::Texture2d(tex, None));
+        }
     }
 }
 

ezgui/src/event_ctx.rs

@@ -76,6 +76,8 @@ impl<'a> Prerender<'a> {
                     tex_coords: [
                         if color == Color::rgb(170, 211, 223) {
                             1.0
+                        } else if color == Color::rgb(200, 250, 204) {
+                            2.0
                         } else {
                             0.0
                         },
@@ -163,19 +165,6 @@ impl<'a> EventCtx<'a> {
         self.input.window_lost_cursor()
             || (!self.canvas.is_dragging() && self.input.get_moved_mouse().is_some())
     }
-
-    // TODO Belongs on Prerender?
-    pub fn upload_texture(&mut self, filename: &str) {
-        assert!(!self.canvas.textures.contains_key(filename));
-        let img = image::open(filename).unwrap().to_rgba();
-        let dims = img.dimensions();
-        let tex = glium::texture::Texture2d::new(
-            self.prerender.display,
-            glium::texture::RawImage2d::from_raw_rgba_reversed(&img.into_raw(), dims),
-        )
-        .unwrap();
-        self.canvas.textures.insert(filename.to_string(), tex);
-    }
 }
 
 pub struct LoadingScreen<'a> {
@@ -202,19 +191,13 @@ impl<'a> LoadingScreen<'a> {
             GlyphBrush::new(prerender.display, vec![Font::from_bytes(dejavu).unwrap()]);
         let mapspace_glyphs =
             GlyphBrush::new(prerender.display, vec![Font::from_bytes(dejavu).unwrap()]);
-        let mut canvas = Canvas::new(
+        let canvas = Canvas::new(
             initial_width,
             initial_height,
             screenspace_glyphs,
             mapspace_glyphs,
         );
 
-        // TODO Hack
-        canvas.textures.insert(
-            "assets/water_texture.png".to_string(),
-            glium::texture::Texture2d::empty(prerender.display, 800, 600).unwrap(),
-        );
-
         // TODO Dupe code
         let vmetrics = canvas.screenspace_glyphs.borrow().fonts()[0]
             .v_metrics(Scale::uniform(FONT_SIZE as f32));

ezgui/src/runner.rs

@@ -156,6 +156,7 @@ pub fn run<G: GUI, F: FnOnce(&mut EventCtx) -> G>(
     window_title: &str,
     initial_width: f64,
     initial_height: f64,
+    textures: Vec<&str>,
     make_gui: F,
 ) {
     let events_loop = glutin::EventsLoop::new();
@@ -252,6 +253,21 @@ pub fn run<G: GUI, F: FnOnce(&mut EventCtx) -> G>(
         total_bytes_uploaded: Cell::new(0),
     };
 
+    if textures.len() > 10 {
+        panic!("Due to lovely hacks, only 10 textures supported");
+    }
+    for filename in textures {
+        println!("Uploading texture {}...", filename);
+        let img = image::open(filename).unwrap().to_rgba();
+        let dims = img.dimensions();
+        let tex = glium::texture::Texture2d::new(
+            &display,
+            glium::texture::RawImage2d::from_raw_rgba_reversed(&img.into_raw(), dims),
+        )
+        .unwrap();
+        canvas.textures.push((filename.to_string(), tex));
+    }
+
     let gui = make_gui(&mut EventCtx {
         input: &mut UserInput::new(Event::NoOp, ContextMenu::new(), &mut canvas),
         canvas: &mut canvas,

fix_map_geom/src/main.rs

@@ -427,7 +427,7 @@ impl GUI for UI {
 
 fn main() {
     let args: Vec<String> = env::args().collect();
-    ezgui::run("InitialMap debugger", 1800.0, 800.0, |ctx| {
+    ezgui::run("InitialMap debugger", 1800.0, 800.0, vec![], |ctx| {
         ctx.canvas.cam_zoom = 4.0;
         UI::new(&args[1], ctx)
     });

game/src/game.rs

@@ -16,8 +16,6 @@ pub struct Game {
 
 impl Game {
     pub fn new(flags: Flags, ctx: &mut EventCtx) -> Game {
-        ctx.upload_texture("assets/water_texture.png");
-
         let splash = !flags.no_splash
             && !format!("{}", flags.sim_flags.load.display()).contains("data/save");
         let ui = UI::new(flags, ctx, splash);

game/src/main.rs

@@ -14,7 +14,11 @@ mod ui;
 use structopt::StructOpt;
 
 fn main() {
-    ezgui::run("A/B Street", 1800.0, 800.0, |ctx| {
-        game::Game::new(ui::Flags::from_args(), ctx)
-    });
+    ezgui::run(
+        "A/B Street",
+        1800.0,
+        800.0,
+        vec!["assets/water_texture.png", "assets/grass_texture.png"],
+        |ctx| game::Game::new(ui::Flags::from_args(), ctx),
+    );
 }

synthetic/src/main.rs

@@ -225,7 +225,7 @@ impl GUI for UI {
 
 fn main() {
     let args: Vec<String> = env::args().collect();
-    ezgui::run("Synthetic map editor", 1024.0, 768.0, |_| {
+    ezgui::run("Synthetic map editor", 1024.0, 768.0, vec![], |_| {
         UI::new(args.get(1))
     });
 }