1 files changed, 14 insertions, 0 deletions

diff --git a/gfx/shaders/view_tangents.vert b/gfx/shaders/view_tangents.vert
new file mode 100644
index 0000000..561ad22
--- /dev/null
+++ b/gfx/shaders/view_tangents.vert
@@ -0,0 +1,14 @@
+precision highp float;
+
+uniform mat4 Modelview;
+uniform mat4 Projection;
+
+layout (location = 0) in vec3 vPosition;
+layout (location = 2) in vec4 vTangent;
+
+out vec4 Tangent;
+
+void main() {
+  Tangent = vec4(Tangent.xyz = mat3(Modelview) * vTangent.xyz, vTangent.w);
+  gl_Position = Projection * Modelview * vec4(vPosition, 1.0);
+}