From 3bbe5ebcdb2a5aa6810dd05576c6ec031efdc1c7 Mon Sep 17 00:00:00 2001
From: Tengu712 <genreihoutengu@gmail.com>
Date: Wed, 7 Oct 2026 00:57:01 +0900
Subject: render image

---
 src/shader.wgsl | 27 +++++++++++++++++++--------
 1 file changed, 19 insertions(+), 8 deletions(-)

(limited to 'src/shader.wgsl')

diff --git a/src/shader.wgsl b/src/shader.wgsl
index e0b34f4..80df5b0 100644
--- a/src/shader.wgsl
+++ b/src/shader.wgsl
@@ -1,18 +1,25 @@
+enable wgpu_binding_array;
+
 struct Instance {
-	position: vec2<f32>,
-	scale:    vec2<f32>,
-	uv:       vec4<f32>,
+	transform:   mat2x2<f32>,
+	translation: vec2<f32>,
+	uv_offset:   vec2<f32>,
+	uv_size:     vec2<f32>,
+	tex_id:      u32,
+	_pad:        u32,
 }
 
 struct VertexOutput {
-	@builtin(position) position: vec4<f32>,
-	@location(0)       uv:       vec2<f32>,
+	@builtin(position)              position: vec4<f32>,
+	@location(0)                    uv:       vec2<f32>,
+	@location(1) @interpolate(flat) tex_id:   u32,
 }
 
 @group(0) @binding(0) var<storage, read> instances: array<Instance>;
 
 @group(1) @binding(0) var tex_sampler: sampler;
 @group(1) @binding(1) var font_tex:    texture_2d<f32>;
+@group(1) @binding(2) var image_texs:  binding_array<texture_2d<f32>, 5>;
 
 @vertex
 fn vs_main(
@@ -23,13 +30,17 @@ fn vs_main(
 	let instance = instances[in_instance_index];
 
 	var out: VertexOutput;
-	out.position = vec4<f32>(instance.position + (uv - 0.5) * instance.scale * 2.0, 0.0, 1.0);
-	out.uv = instance.uv.xy + vec2<f32>(uv.x, 1.0 - uv.y) * instance.uv.zw;
+	out.position = vec4<f32>(instance.transform * (uv - 0.5) + instance.translation, 0.0, 1.0);
+	out.uv = instance.uv_offset + uv * instance.uv_size;
+	out.tex_id = instance.tex_id;
 
 	return out;
 }
 
 @fragment
 fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
-	return vec4<f32>(1.0, 1.0, 1.0, textureSample(font_tex, tex_sampler, in.uv).r);
+	if in.tex_id >= 5u {
+		return vec4<f32>(1.0, 1.0, 1.0, textureSampleLevel(font_tex, tex_sampler, in.uv, 0.0).r);
+	}
+	return textureSampleLevel(image_texs[in.tex_id], tex_sampler, in.uv, 0.0);
 }
-- 
cgit v1.3.1