From 210c44f6c4f34efacf349c14f6e4bf7e6693149b Mon Sep 17 00:00:00 2001
From: katajisto <t@ktj.st>
Date: Fri, 26 Jun 2026 07:34:37 +0300
Subject: [PATCH] fix billboards rendering upside down in macos

---
 src/shaders/jai/shader_gbuffer_billboard.jai | 43 +++++++++++---------
 src/shaders/shader_gbuffer_billboard.glsl    |  4 +-
 2 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/src/shaders/jai/shader_gbuffer_billboard.jai b/src/shaders/jai/shader_gbuffer_billboard.jai
index 84b513d..dfd5f85 100644
--- a/src/shaders/jai/shader_gbuffer_billboard.jai
+++ b/src/shaders/jai/shader_gbuffer_billboard.jai
@@ -556,7 +556,9 @@ vs_gbuffer_billboard_source_metal_macos := u8.[
     fragment main0_out main0(main0_in in [[stage_in]], texture2d<float> gsprite [[texture(0)]], sampler gspritesmp [[sampler(0)]])
     {
         main0_out out = {};
-        if (gsprite.sample(gspritesmp, in.uv_in).w < 0.00999999977648258209228515625)
+        float2 _12 = in.uv_in;
+        _12.y = 1.0 - _12.y;
+        if (gsprite.sample(gspritesmp, _12).w < 0.00999999977648258209228515625)
         {
             discard_fragment();
         }
@@ -596,24 +598,27 @@ fs_gbuffer_billboard_source_metal_macos := u8.[
     0x70,0x72,0x69,0x74,0x65,0x73,0x6d,0x70,0x20,0x5b,0x5b,0x73,0x61,0x6d,0x70,0x6c,
     0x65,0x72,0x28,0x30,0x29,0x5d,0x5d,0x29,0x0a,0x7b,0x0a,0x20,0x20,0x20,0x20,0x6d,
     0x61,0x69,0x6e,0x30,0x5f,0x6f,0x75,0x74,0x20,0x6f,0x75,0x74,0x20,0x3d,0x20,0x7b,
-    0x7d,0x3b,0x0a,0x20,0x20,0x20,0x20,0x69,0x66,0x20,0x28,0x67,0x73,0x70,0x72,0x69,
-    0x74,0x65,0x2e,0x73,0x61,0x6d,0x70,0x6c,0x65,0x28,0x67,0x73,0x70,0x72,0x69,0x74,
-    0x65,0x73,0x6d,0x70,0x2c,0x20,0x69,0x6e,0x2e,0x75,0x76,0x5f,0x69,0x6e,0x29,0x2e,
-    0x77,0x20,0x3c,0x20,0x30,0x2e,0x30,0x30,0x39,0x39,0x39,0x39,0x39,0x39,0x39,0x37,
-    0x37,0x36,0x34,0x38,0x32,0x35,0x38,0x32,0x30,0x39,0x32,0x32,0x38,0x35,0x31,0x35,
-    0x36,0x32,0x35,0x29,0x0a,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,0x20,
-    0x20,0x20,0x20,0x64,0x69,0x73,0x63,0x61,0x72,0x64,0x5f,0x66,0x72,0x61,0x67,0x6d,
-    0x65,0x6e,0x74,0x28,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,
-    0x20,0x6f,0x75,0x74,0x2e,0x6f,0x75,0x74,0x5f,0x70,0x6f,0x73,0x69,0x74,0x69,0x6f,
-    0x6e,0x20,0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,0x69,0x6e,0x2e,0x76,0x69,
-    0x65,0x77,0x5f,0x73,0x70,0x61,0x63,0x65,0x5f,0x70,0x6f,0x73,0x2c,0x20,0x31,0x2e,
-    0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x6f,0x75,0x74,0x2e,0x6f,0x75,0x74,0x5f,
-    0x6e,0x6f,0x72,0x6d,0x61,0x6c,0x20,0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,
-    0x66,0x61,0x73,0x74,0x3a,0x3a,0x6e,0x6f,0x72,0x6d,0x61,0x6c,0x69,0x7a,0x65,0x28,
-    0x69,0x6e,0x2e,0x76,0x69,0x65,0x77,0x5f,0x73,0x70,0x61,0x63,0x65,0x5f,0x6e,0x6f,
-    0x72,0x6d,0x61,0x6c,0x29,0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,
-    0x20,0x72,0x65,0x74,0x75,0x72,0x6e,0x20,0x6f,0x75,0x74,0x3b,0x0a,0x7d,0x0a,0x0a,
-    0x00,
+    0x7d,0x3b,0x0a,0x20,0x20,0x20,0x20,0x66,0x6c,0x6f,0x61,0x74,0x32,0x20,0x5f,0x31,
+    0x32,0x20,0x3d,0x20,0x69,0x6e,0x2e,0x75,0x76,0x5f,0x69,0x6e,0x3b,0x0a,0x20,0x20,
+    0x20,0x20,0x5f,0x31,0x32,0x2e,0x79,0x20,0x3d,0x20,0x31,0x2e,0x30,0x20,0x2d,0x20,
+    0x5f,0x31,0x32,0x2e,0x79,0x3b,0x0a,0x20,0x20,0x20,0x20,0x69,0x66,0x20,0x28,0x67,
+    0x73,0x70,0x72,0x69,0x74,0x65,0x2e,0x73,0x61,0x6d,0x70,0x6c,0x65,0x28,0x67,0x73,
+    0x70,0x72,0x69,0x74,0x65,0x73,0x6d,0x70,0x2c,0x20,0x5f,0x31,0x32,0x29,0x2e,0x77,
+    0x20,0x3c,0x20,0x30,0x2e,0x30,0x30,0x39,0x39,0x39,0x39,0x39,0x39,0x39,0x37,0x37,
+    0x36,0x34,0x38,0x32,0x35,0x38,0x32,0x30,0x39,0x32,0x32,0x38,0x35,0x31,0x35,0x36,
+    0x32,0x35,0x29,0x0a,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,
+    0x20,0x20,0x64,0x69,0x73,0x63,0x61,0x72,0x64,0x5f,0x66,0x72,0x61,0x67,0x6d,0x65,
+    0x6e,0x74,0x28,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,0x20,
+    0x6f,0x75,0x74,0x2e,0x6f,0x75,0x74,0x5f,0x70,0x6f,0x73,0x69,0x74,0x69,0x6f,0x6e,
+    0x20,0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,0x69,0x6e,0x2e,0x76,0x69,0x65,
+    0x77,0x5f,0x73,0x70,0x61,0x63,0x65,0x5f,0x70,0x6f,0x73,0x2c,0x20,0x31,0x2e,0x30,
+    0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x6f,0x75,0x74,0x2e,0x6f,0x75,0x74,0x5f,0x6e,
+    0x6f,0x72,0x6d,0x61,0x6c,0x20,0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,0x66,
+    0x61,0x73,0x74,0x3a,0x3a,0x6e,0x6f,0x72,0x6d,0x61,0x6c,0x69,0x7a,0x65,0x28,0x69,
+    0x6e,0x2e,0x76,0x69,0x65,0x77,0x5f,0x73,0x70,0x61,0x63,0x65,0x5f,0x6e,0x6f,0x72,
+    0x6d,0x61,0x6c,0x29,0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,
+    0x72,0x65,0x74,0x75,0x72,0x6e,0x20,0x6f,0x75,0x74,0x3b,0x0a,0x7d,0x0a,0x0a,0x00,
+
 ];
 gbuffer_billboard_shader_desc :: (backend: sg_backend) -> sg_shader_desc {
     desc: sg_shader_desc;
diff --git a/src/shaders/shader_gbuffer_billboard.glsl b/src/shaders/shader_gbuffer_billboard.glsl
index 9cd1893..52986d7 100644
--- a/src/shaders/shader_gbuffer_billboard.glsl
+++ b/src/shaders/shader_gbuffer_billboard.glsl
@@ -47,9 +47,7 @@ layout(location=1) out vec4 out_normal;
 
 void main() {
     vec2 uv = uv_in;
-    #if SOKOL_GLSL
-        uv.y = 1.0 - uv.y;
-    #endif
+    uv.y = 1.0 - uv.y;
     vec4 sampled = texture(sampler2D(gsprite, gspritesmp), uv);
     if(sampled.a < 0.01) discard;
     out_position = vec4(view_space_pos, 1.0);