GLSL: implement transpose() in GLSL 1.10 / ES 1.00

1 files changed, 13 insertions, 1 deletions

diff --git a/shaders/legacy/vert/transpose.legacy.vert b/shaders/legacy/vert/transpose.legacy.vert
index 84f61826..588c28d5 100644
--- a/shaders/legacy/vert/transpose.legacy.vert
+++ b/shaders/legacy/vert/transpose.legacy.vert
@@ -15,6 +15,18 @@ void main()
 	vec4 c1 = M * (MVPColMajor * Position);
 	vec4 c2 = M * (Position * MVPRowMajor);
 	vec4 c3 = M * (Position * MVPColMajor);
-	gl_Position = c0 + c1 + c2 + c3;
+
+	vec4 c4 = transpose(MVPRowMajor) * Position;
+	vec4 c5 = transpose(MVPColMajor) * Position;
+	vec4 c6 = Position * transpose(MVPRowMajor);
+	vec4 c7 = Position * transpose(MVPColMajor);
+
+	// Multiplying by scalar forces resolution of the transposition
+	vec4 c8 = (MVPRowMajor * 2.0) * Position;
+	vec4 c9 = (transpose(MVPColMajor) * 2.0) * Position;
+	vec4 c10 = Position * (MVPRowMajor * 2.0);
+	vec4 c11 = Position * (transpose(MVPColMajor) * 2.0);
+
+	gl_Position = c0 + c1 + c2 + c3 + c4 + c5 + c6 + c7 + c8 + c9 + c10 + c11;
 }