From c194f59e171a1e58ce1704f37d99ffcd09a42433 Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Mon, 2 Feb 2026 15:55:03 +0100
Subject: fix(gpu): Resolve high-DPI squished rendering and 3D shadow bugs

- Implemented dynamic resolution support in all shaders and effects.
- Added explicit viewport setting for all render passes to ensure correct scaling.
- Fixed 3D shadow mapping by adding PLANE support and standardizing soft shadow logic.
- Propagated resize events through the Effect hierarchy.
- Applied project-wide code formatting.
---
 src/gpu/effects/shaders.cc | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

(limited to 'src/gpu/effects/shaders.cc')

diff --git a/src/gpu/effects/shaders.cc b/src/gpu/effects/shaders.cc
index 0e80230..ac0bba9 100644
--- a/src/gpu/effects/shaders.cc
+++ b/src/gpu/effects/shaders.cc
@@ -122,6 +122,15 @@ const char* passthrough_shader_wgsl = R"(
 @group(0) @binding(0) var smplr: sampler;
 @group(0) @binding(1) var txt: texture_2d<f32>;
 
+struct Uniforms {
+    time: f32,
+    beat: f32,
+    intensity: f32,
+    aspect_ratio: f32,
+    resolution: vec2<f32>,
+};
+@group(0) @binding(2) var<uniform> uniforms: Uniforms;
+
 @vertex fn vs_main(@builtin(vertex_index) i: u32) -> @builtin(position) vec4<f32> {
     var pos = array<vec2<f32>, 3>(
         vec2<f32>(-1, -1),
@@ -132,7 +141,7 @@ const char* passthrough_shader_wgsl = R"(
 }
 
 @fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    return textureSample(txt, smplr, p.xy / vec2<f32>(1280.0, 720.0));
+    return textureSample(txt, smplr, p.xy / uniforms.resolution);
 })";
 
 const char* ellipse_shader_wgsl = R"(
@@ -141,6 +150,7 @@ struct Uniforms {
     beat: f32,
     intensity: f32,
     aspect_ratio: f32,
+    resolution: vec2<f32>,
 };
 
 @group(0) @binding(0) var<uniform> uniforms: Uniforms;
@@ -187,7 +197,7 @@ fn sdEllipse(p: vec2<f32>, ab: vec2<f32>) -> f32 {
 }
 
 @fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    let uv = (p.xy / vec2<f32>(1280.0, 720.0) - 0.5) * 2.0;
+    let uv = (p.xy / uniforms.resolution - 0.5) * 2.0;
     let movement = vec2<f32>(sin(uniforms.time * 0.7), cos(uniforms.time * 0.5));
     let d = sdEllipse((uv * vec2<f32>(uniforms.aspect_ratio, 1.0)) - movement, vec2<f32>(0.5, 0.3) * (1.0 + uniforms.beat * 0.2));
     return mix(vec4<f32>(0.2, 0.8, 0.4, 1.0), vec4<f32>(0.0), smoothstep(0.0, 0.01, d));
@@ -244,6 +254,7 @@ struct Uniforms {
     beat: f32,
     intensity: f32,
     aspect_ratio: f32,
+    resolution: vec2<f32>,
 };
 
 @group(0) @binding(2) var<uniform> uniforms: Uniforms;
@@ -258,12 +269,12 @@ struct Uniforms {
 }
 
 @fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    let uv = p.xy / vec2<f32>(1280.0, 720.0);
+    let uv = p.xy / uniforms.resolution;
     var res = vec4<f32>(0.0);
     let size = 5.0 * uniforms.intensity;
     for (var x: f32 = -2.0; x <= 2.0; x += 1.0) {
         for (var y: f32 = -2.0; y <= 2.0; y += 1.0) {
-            res += textureSample(txt, smplr, uv + vec2<f32>(x, y) * size / 1280.0);
+            res += textureSample(txt, smplr, uv + vec2<f32>(x, y) * size / uniforms.resolution.x);
         }
     }
     return res / 25.0;
@@ -278,6 +289,7 @@ struct Uniforms {
     beat: f32,
     intensity: f32,
     aspect_ratio: f32,
+    resolution: vec2<f32>,
 };
 
 @group(0) @binding(2) var<uniform> uniforms: Uniforms;
@@ -292,7 +304,7 @@ struct Uniforms {
 }
 
 @fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    let uv = p.xy / vec2<f32>(1280.0, 720.0);
+    let uv = p.xy / uniforms.resolution;
     var col = textureSample(txt, smplr, uv);
     let thr = 0.5 + 0.3 * sin(uniforms.time);
     if (col.r < thr) {
@@ -316,6 +328,7 @@ struct Uniforms {
     beat: f32,
     intensity: f32,
     aspect_ratio: f32,
+    resolution: vec2<f32>,
 };
 
 @group(0) @binding(2) var<uniform> uniforms: Uniforms;
@@ -330,7 +343,7 @@ struct Uniforms {
 }
 
 @fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    let uv = p.xy / vec2<f32>(1280.0, 720.0);
+    let uv = p.xy / uniforms.resolution;
     let dist = 0.1 * uniforms.intensity * sin(uv.y * 20.0 + uniforms.time * 5.0);
     return textureSample(txt, smplr, uv + vec2<f32>(dist, 0.0));
 })";
@@ -344,6 +357,7 @@ struct Uniforms {
     beat: f32,
     intensity: f32,
     aspect_ratio: f32,
+    resolution: vec2<f32>,
 };
 
 @group(0) @binding(2) var<uniform> uniforms: Uniforms;
@@ -358,7 +372,7 @@ struct Uniforms {
 }
 
 @fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    let uv = p.xy / vec2<f32>(1280.0, 720.0);
+    let uv = p.xy / uniforms.resolution;
     let off = 0.02 * uniforms.intensity;
     let r = textureSample(txt, smplr, uv + vec2<f32>(off, 0.0)).r;
     let g = textureSample(txt, smplr, uv).g;
-- 
cgit v1.2.3