text rendering

src/render/mod.rs

@@ -6,14 +6,18 @@ mod shadow;
 mod types;
 
 pub mod billboard;
+pub mod font_atlas;
 pub mod snow;
 pub mod snow_light;
+pub mod text_pipeline;
 
 pub use billboard::{BillboardDrawCall, BillboardPipeline};
+pub use font_atlas::FontAtlas;
 pub use global::{
     aspect_ratio, init, init_snow_light_accumulation, render, set_selected_entity, set_snow_depth,
-    set_terrain_data, update_spotlights, with_device, with_queue, with_surface_format,
+    set_terrain_data, update_spotlights, with_device, with_font_atlas, with_queue, with_surface_format,
 };
+pub use text_pipeline::TextVertex;
 pub use types::{DrawCall, Pipeline, Spotlight, SpotlightRaw, Uniforms, MAX_SPOTLIGHTS};
 
 use crate::entity::EntityHandle;
@@ -38,6 +42,7 @@ pub struct Renderer
     pub config: wgpu::SurfaceConfiguration,
 
     framebuffer: LowResFramebuffer,
+    fullres_depth_view: wgpu::TextureView,
 
     standard_pipeline: wgpu::RenderPipeline,
     snow_clipmap_pipeline: wgpu::RenderPipeline,
@@ -45,6 +50,8 @@ pub struct Renderer
     debug_lines_pipeline: Option<wgpu::RenderPipeline>,
     debug_overlay: Option<debug_overlay::DebugOverlay>,
     billboard_pipeline: BillboardPipeline,
+    font_atlas: font_atlas::FontAtlas,
+    text_pipeline: text_pipeline::TextPipeline,
     wireframe_supported: bool,
 
     uniform_buffer: wgpu::Buffer,
@@ -148,6 +155,23 @@ impl Renderer
         let framebuffer =
             LowResFramebuffer::new(&device, low_res_width, low_res_height, config.format);
 
+        let fullres_depth_texture = device.create_texture(&wgpu::TextureDescriptor {
+            label: Some("Full Res Depth Texture"),
+            size: wgpu::Extent3d {
+                width: config.width,
+                height: config.height,
+                depth_or_array_layers: 1,
+            },
+            mip_level_count: 1,
+            sample_count: 1,
+            dimension: wgpu::TextureDimension::D2,
+            format: wgpu::TextureFormat::Depth32Float,
+            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+            view_formats: &[],
+        });
+        let fullres_depth_view =
+            fullres_depth_texture.create_view(&wgpu::TextureViewDescriptor::default());
+
         let uniform_buffer = device.create_buffer(&wgpu::BufferDescriptor {
             label: Some("Uniform Buffer"),
             size: (std::mem::size_of::<Uniforms>() * MAX_DRAW_CALLS) as wgpu::BufferAddress,
@@ -502,6 +526,8 @@ impl Renderer
         ));
 
         let billboard_pipeline = BillboardPipeline::new(&device, config.format);
+        let font_atlas = font_atlas::FontAtlas::load(&device, &queue);
+        let text_pipeline = text_pipeline::TextPipeline::new(&device, config.format, &font_atlas);
 
         let debug_overlay = Some(debug_overlay::DebugOverlay::new(&device, config.format));
 
@@ -526,12 +552,15 @@ impl Renderer
             surface,
             config,
             framebuffer,
+            fullres_depth_view,
             standard_pipeline,
             snow_clipmap_pipeline,
             wireframe_pipeline,
             debug_lines_pipeline,
             debug_overlay,
             billboard_pipeline,
+            font_atlas,
+            text_pipeline,
             wireframe_supported,
             uniform_buffer,
             bind_group_layout,
@@ -576,6 +605,7 @@ impl Renderer
         player_position: glam::Vec3,
         draw_calls: &[DrawCall],
         billboard_calls: &[BillboardDrawCall],
+        text_vertices: &[text_pipeline::TextVertex],
         time: f32,
         delta_time: f32,
         debug_mode: DebugMode,
@@ -954,14 +984,6 @@ impl Renderer
             }
         }
 
-        self.billboard_pipeline.render(
-            &mut encoder,
-            &self.queue,
-            &self.framebuffer.view,
-            &self.framebuffer.depth_view,
-            billboard_calls,
-        );
-
         self.queue.submit(std::iter::once(encoder.finish()));
 
         let frame = match self.surface.get_current_texture()
@@ -1012,6 +1034,50 @@ impl Renderer
         }
 
         self.queue.submit(std::iter::once(blit_encoder.finish()));
+
+        let mut overlay_encoder =
+            self.device
+                .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+                    label: Some("Dialog Overlay Encoder"),
+                });
+
+        {
+            let _depth_clear = overlay_encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                label: Some("Full Res Depth Clear"),
+                color_attachments: &[],
+                depth_stencil_attachment: Some(wgpu::RenderPassDepthStencilAttachment {
+                    view: &self.fullres_depth_view,
+                    depth_ops: Some(wgpu::Operations {
+                        load: wgpu::LoadOp::Clear(1.0),
+                        store: wgpu::StoreOp::Store,
+                    }),
+                    stencil_ops: None,
+                }),
+                timestamp_writes: None,
+                occlusion_query_set: None,
+                multiview_mask: None,
+            });
+        }
+
+        self.billboard_pipeline.render(
+            &mut overlay_encoder,
+            &self.queue,
+            &screen_view,
+            &self.fullres_depth_view,
+            billboard_calls,
+        );
+
+        let view_proj = (*projection * *view).to_cols_array_2d();
+        self.text_pipeline.render(
+            &mut overlay_encoder,
+            &self.queue,
+            &screen_view,
+            &self.fullres_depth_view,
+            text_vertices,
+            view_proj,
+        );
+
+        self.queue.submit(std::iter::once(overlay_encoder.finish()));
         frame
     }