From 847962910f0bff071f3bf07c9abb87764fb6cac3 Mon Sep 17 00:00:00 2001
From: claude-bot <claude@ancap.in.ua>
Date: Mon, 13 Jul 2026 12:40:03 +0000
Subject: Import aap/librw @ master

Snapshot for re3/reVC vendoring, per @lzcnt.
Source: https://github.com/aap/librw (master).
---
 src/gl/shaders/matfx_env.vert | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 src/gl/shaders/matfx_env.vert

(limited to 'src/gl/shaders/matfx_env.vert')

diff --git a/src/gl/shaders/matfx_env.vert b/src/gl/shaders/matfx_env.vert
new file mode 100644
index 0000000..580a49f
--- /dev/null
+++ b/src/gl/shaders/matfx_env.vert
@@ -0,0 +1,31 @@
+uniform mat4 u_texMatrix;
+uniform vec4 u_colorClamp;
+uniform vec4 u_envColor;
+
+VSIN(ATTRIB_POS)	vec3 in_pos;
+
+VSOUT vec4 v_color;
+VSOUT vec4 v_envColor;
+VSOUT vec2 v_tex0;
+VSOUT vec2 v_tex1;
+VSOUT float v_fog;
+
+void
+main(void)
+{
+	vec4 Vertex = u_world * vec4(in_pos, 1.0);
+	gl_Position = u_proj * u_view * Vertex;
+	vec3 Normal = mat3(u_world) * in_normal;
+
+	v_tex0 = in_tex0;
+	v_tex1 = (u_texMatrix * vec4(Normal, 1.0)).xy;
+
+	v_color = in_color;
+	v_color.rgb += u_ambLight.rgb*surfAmbient;
+	v_color.rgb += DoDynamicLight(Vertex.xyz, Normal)*surfDiffuse;
+	v_color = clamp(v_color, 0.0, 1.0);
+	v_envColor = max(v_color, u_colorClamp) * u_envColor;
+	v_color *= u_matColor;
+
+	v_fog = DoFog(gl_Position.w);
+}
-- 
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