1 files changed, 11 insertions, 1 deletions
diff --git a/src/shaders/common.c b/src/shaders/common.c
index 3b58524..411c7e4 100644
--- a/src/shaders/common.c
+++ b/src/shaders/common.c
@@ -1,6 +1,9 @@
 #include "common.h"
 
-Vec3 normal_from_color(Color32 c32) {
+Vec4 _proj_params;
+Vec2 _time;
+
+Vec3 unpacknormal(Color32 c32) {
 	Vec3 normal = {
 		c32.r * 2 - 1,
 		c32.g * 2 - 1,
@@ -25,4 +28,11 @@ Vec2 texsize(Texture* texture) {
 	return size;
 }
 
+float linear01depth(float depth) {
+	float n = _proj_params.x, f = _proj_params.y;
+	return n / ((n-f)*depth + f);
+}
 
+float lineareyedepth(float depth) {
+	return _proj_params.y * linear01depth(depth);
+}
+\ No newline at end of file