1 files changed, 34 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_geom.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_geom.glsl
new file mode 100644
index 00000000000..2ce37d867b7
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/lightprobe_geom.glsl
@@ -0,0 +1,34 @@
+
+layout(triangles) in;
+layout(triangle_strip, max_vertices=3) out;
+
+uniform int Layer;
+
+in vec4 vPos[];
+flat in int face[];
+flat out int fFace;
+
+out vec3 worldPosition;
+out vec3 viewPosition; /* Required. otherwise generate linking error. */
+out vec3 worldNormal; /* Required. otherwise generate linking error. */
+out vec3 viewNormal; /* Required. otherwise generate linking error. */
+
+const vec3 maj_axes[6] = vec3[6](vec3(1.0,  0.0,  0.0), vec3(-1.0,  0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, -1.0,  0.0), vec3( 0.0,  0.0, 1.0), vec3( 0.0,  0.0, -1.0));
+const vec3 x_axis[6]   = vec3[6](vec3(0.0,  0.0, -1.0), vec3( 0.0,  0.0, 1.0), vec3(1.0, 0.0, 0.0), vec3(1.0,  0.0,  0.0), vec3( 1.0,  0.0, 0.0), vec3(-1.0,  0.0,  0.0));
+const vec3 y_axis[6]   = vec3[6](vec3(0.0, -1.0,  0.0), vec3( 0.0, -1.0, 0.0), vec3(0.0, 0.0, 1.0), vec3(0.0,  0.0, -1.0), vec3( 0.0, -1.0, 0.0), vec3( 0.0, -1.0,  0.0));
+
+void main() {
+	fFace = face[0];
+	gl_Layer = Layer + fFace;
+
+	for (int v = 0; v < 3; ++v) {
+		gl_Position = vPos[v];
+		worldPosition = x_axis[fFace] * vPos[v].x + y_axis[fFace] * vPos[v].y + maj_axes[fFace];
+#ifdef ATTRIB
+		pass_attrib(v);
+#endif
+		EmitVertex();
+	}
+
+	EndPrimitive();
+}