From 749bbc6a54e50c297ab49d9e515a3679651d1461 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sun, 15 Dec 2019 00:39:18 +0800
Subject: *misc

---
 src/shaders/common.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/shaders/common.c

(limited to 'src/shaders/common.c')

diff --git a/src/shaders/common.c b/src/shaders/common.c
new file mode 100644
index 0000000..f36e272
--- /dev/null
+++ b/src/shaders/common.c
@@ -0,0 +1,21 @@
+#include "common.h"
+
+Vec3 normal_from_color(Color32 c32) {
+	Vec3 normal = {
+		c32.r * 2 - 1,
+		c32.g * 2 - 1,
+		c32.b * 2 - 1,
+	};
+	return normal;
+}
+
+Mat4 mat4(Vec4* c1, Vec4* c2, Vec4* c3, Vec4* c4);
+
+Mat3 mat3(Vec3* c1, Vec3* c2, Vec3* c3) {
+	Mat3 m = {
+		c1->x,c1->y,c1->z,
+		c2->x,c2->y,c2->z,
+		c3->x,c3->y,c3->z,
+	};
+	return m;
+}
-- 
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