From f6d058be6639c8e052c5a38dea4f33d6b26ae20c Mon Sep 17 00:00:00 2001
From: Tengu712 <genreihoutengu@gmail.com>
Date: Sat, 26 Sep 2026 21:36:43 +0900
Subject: add texture

---
 src/graphics.rs | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 66 insertions(+), 2 deletions(-)

(limited to 'src/graphics.rs')

diff --git a/src/graphics.rs b/src/graphics.rs
index 6fa13b3..bbe07df 100644
--- a/src/graphics.rs
+++ b/src/graphics.rs
@@ -2,6 +2,10 @@ use std::{borrow::Cow, sync::Arc};
 use wgpu::*;
 use winit::{dpi::PhysicalSize, event_loop::OwnedDisplayHandle, window::Window};
 
+mod texture;
+
+use texture::TextureWrapper;
+
 pub enum AcquireSurfaceTextureResult {
     Ok(SurfaceTexture),
     ShouldSkip,
@@ -16,6 +20,9 @@ pub struct Renderer {
     view_format: TextureFormat,
     present_mode: PresentMode,
     pipeline: RenderPipeline,
+
+    font_tex: TextureWrapper,
+    fixed_bind_group: BindGroup,
 }
 
 impl Renderer {
@@ -26,7 +33,6 @@ impl Renderer {
         let size = window.inner_size();
 
         let instance = Instance::new(InstanceDescriptor::new_with_display_handle(display));
-
         let surface = instance.create_surface(window).map_err(|e| e.to_string())?;
 
         let adapter = instance
@@ -67,9 +73,30 @@ impl Renderer {
             source: ShaderSource::Wgsl(Cow::Borrowed(include_str!("shader.wgsl"))),
         });
 
+        let fixed_bind_group_layout = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
+            label: None,
+            entries: &[
+                BindGroupLayoutEntry {
+                    binding: 0,
+                    visibility: ShaderStages::FRAGMENT,
+                    ty: BindingType::Sampler(SamplerBindingType::Filtering),
+                    count: None,
+                },
+                BindGroupLayoutEntry {
+                    binding: 1,
+                    visibility: ShaderStages::FRAGMENT,
+                    ty: BindingType::Texture {
+                        sample_type: TextureSampleType::Float { filterable: true },
+                        view_dimension: TextureViewDimension::D2,
+                        multisampled: false,
+                    },
+                    count: None,
+                },
+            ],
+        });
         let pipeline_layout = device.create_pipeline_layout(&PipelineLayoutDescriptor {
             label: None,
-            bind_group_layouts: &[],
+            bind_group_layouts: &[Some(&fixed_bind_group_layout)],
             immediate_size: 0,
         });
         let pipeline = device.create_render_pipeline(&RenderPipelineDescriptor {
@@ -98,6 +125,40 @@ impl Renderer {
             cache: None,
         });
 
+        // NOTE: 本ゲームではlinearなサンプラしか用意しないので、ここで1個だけ作成すれば良い。
+        let sampler = device.create_sampler(&SamplerDescriptor {
+            label: None,
+            address_mode_u: AddressMode::ClampToEdge,
+            address_mode_v: AddressMode::ClampToEdge,
+            address_mode_w: AddressMode::ClampToEdge,
+            mag_filter: FilterMode::Linear,
+            min_filter: FilterMode::Linear,
+            mipmap_filter: MipmapFilterMode::Linear,
+            ..Default::default()
+        });
+        // NOTE: 文字テクスチャアトラスは使い回すので、ここで1個だけ作成すれば良い。
+        let font_tex = TextureWrapper::new(
+            &device,
+            128,
+            128,
+            TextureFormat::R8Unorm,
+            TextureUsages::TEXTURE_BINDING | TextureUsages::COPY_DST,
+        );
+        let fixed_bind_group = device.create_bind_group(&BindGroupDescriptor {
+            label: None,
+            layout: &fixed_bind_group_layout,
+            entries: &[
+                BindGroupEntry {
+                    binding: 0,
+                    resource: BindingResource::Sampler(&sampler),
+                },
+                BindGroupEntry {
+                    binding: 1,
+                    resource: BindingResource::TextureView(&font_tex.view),
+                },
+            ],
+        });
+
         let v = Self {
             device,
             queue,
@@ -106,6 +167,8 @@ impl Renderer {
             view_format,
             present_mode,
             pipeline,
+            font_tex,
+            fixed_bind_group,
         };
 
         v.configure_surface(size);
@@ -161,6 +224,7 @@ impl Renderer {
         });
 
         render_pass.set_pipeline(&self.pipeline);
+        render_pass.set_bind_group(0, &self.fixed_bind_group, &[]);
 
         // TODO: 描画
 
-- 
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