From 65aa7e1eaa1ee88d480e9f12c2c8749e1ed7e66b Mon Sep 17 00:00:00 2001
From: castano <castano@95f4ed2b-212e-0410-8b90-d31948207fce>
Date: Wed, 5 Mar 2008 22:35:16 +0000
Subject: [PATCH] Add interface for swizzle color xform.

---
 src/nvtt/InputOptions.cpp | 13 +++++++++++++
 src/nvtt/nvtt.h           |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/src/nvtt/InputOptions.cpp b/src/nvtt/InputOptions.cpp
index cb52e42..61ec767 100644
--- a/src/nvtt/InputOptions.cpp
+++ b/src/nvtt/InputOptions.cpp
@@ -305,6 +305,19 @@ void InputOptions::setLinearTransform(int channel, float w0, float w1, float w2,
 	//m.linearTransform.setRow(channel, w);
 }
 
+void InputOptions::setSwizzleTransform(int x, int y, int z, int w)
+{
+	nvCheck(x >= 0 && x < 3);
+	nvCheck(y >= 0 && y < 3);
+	nvCheck(z >= 0 && z < 3);
+	nvCheck(w >= 0 && w < 3);
+	
+	// m.xswizzle = x;
+	// m.yswizzle = y;
+	// m.zswizzle = z;
+	// m.wswizzle = w;
+}
+
 void InputOptions::setMaxExtents(int e)
 {
 	nvDebugCheck(e > 0);
diff --git a/src/nvtt/nvtt.h b/src/nvtt/nvtt.h
index fd3a344..44dbdd9 100644
--- a/src/nvtt/nvtt.h
+++ b/src/nvtt/nvtt.h
@@ -157,6 +157,7 @@ namespace nvtt
 	{
 		ColorTransform_None,
 		ColorTransform_Linear,
+		ColorTransform_Swizzle
 	};
 	
 	/// Extents rounding mode.
@@ -221,6 +222,7 @@ namespace nvtt
 		// Set color transforms. @@ Not implemented!
 		NVTT_API void setColorTransform(ColorTransform t);
 		NVTT_API void setLinearTransform(int channel, float w0, float w1, float w2, float w3);
+		NVTT_API void setSwizzleTransform(int x, int y, int z, int w);
 		
 		// Set resizing options.
 		NVTT_API void setMaxExtents(int d);