From f8a80039c74332e2101a177ef3fde31ef2077224 Mon Sep 17 00:00:00 2001
From: Micha White <botahamec@outlook.com>
Date: Thu, 15 Aug 2024 20:14:15 -0400
Subject: Lots a changes

---
 render/shaders/sprite.wgsl | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

(limited to 'render/shaders/sprite.wgsl')

diff --git a/render/shaders/sprite.wgsl b/render/shaders/sprite.wgsl
index 276a8ef..1e7f1a2 100644
--- a/render/shaders/sprite.wgsl
+++ b/render/shaders/sprite.wgsl
@@ -11,42 +11,30 @@ struct InstanceInput {
 	@location(2) size: vec2<f32>,
 	@location(3) texture_coordinates: vec2<f32>,
 	@location(4) texture_size: vec2<f32>,
-	@location(5) texture_atlas_index: u32,
-	@location(6) rotation: f32,
-	@location(7) z_index: f32,
 }
 
 struct VertexOutput {
 	@builtin(position) clip_position: vec4<f32>,
 	@location(0) texture_coordinates: vec2<f32>,
-	@location(1) texture_atlas_index: u32
 }
 
 @vertex
 fn vs_main(model: VertexInput, instance: InstanceInput) -> VertexOutput {
 	var out: VertexOutput;
 
-	// rotate the sprite
-	let rotation = -instance.rotation;
-	let a = vec2<f32>(cos(rotation), sin(rotation));
-	let b = vec2<f32>(-a[1], a[0]);
-	let rotation_mat = mat2x2<f32>(a, b);
-	let rotated = rotation_mat * model.position;
-
 	// scale the sprite
-	let scaled = rotated * instance.size;
+	let scaled = model.position * instance.size;
 
 	// move the sprite
 	let position2d = scaled + instance.position;
 
 	// camera stuff
-	let position4d = vec4<f32>(position2d, instance.z_index, 1.0);
+	let position4d = vec4<f32>(position2d, 0.0, 1.0);
 	let position = camera * position4d;
 
 	let tex_coords = vec2<f32>(model.position[0] + 0.5, 1.0 - (model.position[1] + 0.5));
 
 	out.clip_position = position;
-	out.texture_atlas_index = instance.texture_atlas_index;
 	out.texture_coordinates = tex_coords * instance.texture_size + instance.texture_coordinates;
 	return out;
 }
-- 
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