X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fpixelformat.cpp;h=4744ebbdfbad3a61c209be9085a01e15c8e4b1bc;hp=738b796c5981fa307c2f9e3f15bc4f94fed1b789;hb=f14435e58bfa0fa697a06ba9a454bb30cd37d9d8;hpb=d1800d7ea80290f4913d0203241cef1409656522

diff --git a/source/pixelformat.cpp b/source/pixelformat.cpp
index 738b796c..4744ebbd 100644
--- a/source/pixelformat.cpp
+++ b/source/pixelformat.cpp
@@ -1,10 +1,4 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include "except.h"
 #include "pixelformat.h"
 
 using namespace std;
@@ -18,36 +12,71 @@ istream &operator>>(istream &in, PixelFormat &fmt)
 
 	in>>word;
 	if(word=="COLOR_INDEX")
-		fmt=COLOR_INDEX;
+		fmt = COLOR_INDEX;
 	else if(word=="STENCIL_INDEX")
-		fmt=STENCIL_INDEX;
+		fmt = STENCIL_INDEX;
 	else if(word=="DEPTH_COMPONENT")
-		fmt=DEPTH_COMPONENT;
+		fmt = DEPTH_COMPONENT;
 	else if(word=="RED")
-		fmt=RED;
+		fmt = RED;
 	else if(word=="GREEN")
-		fmt=GREEN;
+		fmt = GREEN;
 	else if(word=="BLUE")
-		fmt=BLUE;
+		fmt = BLUE;
 	else if(word=="ALPHA")
-		fmt=ALPHA;
+		fmt = ALPHA;
 	else if(word=="RGB")
-		fmt=RGB;
+		fmt = RGB;
 	else if(word=="RGBA")
-		fmt=RGBA;
+		fmt = RGBA;
 	else if(word=="BGR")
-		fmt=BGR;
+		fmt = BGR;
 	else if(word=="BGRA")
-		fmt=BGRA;
+		fmt = BGRA;
 	else if(word=="LUMINANCE")
-		fmt=LUMINANCE;
+		fmt = LUMINANCE;
 	else if(word=="LUMINANCE_ALPHA")
-		fmt=LUMINANCE_ALPHA;
+		fmt = LUMINANCE_ALPHA;
 	else
 		in.setstate(ios_base::failbit);
 
 	return in;
 }
 
+PixelFormat pixelformat_from_graphics(Graphics::PixelFormat pf)
+{
+	switch(pf)
+	{
+	case Graphics::COLOR_INDEX: return COLOR_INDEX;
+	case Graphics::LUMINANCE: return LUMINANCE;
+	case Graphics::LUMINANCE_ALPHA: return LUMINANCE_ALPHA;
+	case Graphics::RGB: return RGB;
+	case Graphics::RGBA: return RGBA;
+	case Graphics::BGR: return BGR;
+	case Graphics::BGRA: return BGRA;
+	default: throw InvalidParameterValue("Unknown Graphics::PixelFormat");
+	}
+}
+
+PixelFormat get_base_pixelformat(PixelFormat pf)
+{
+	switch(pf)
+	{
+	case RGB8:
+	case RGB16F:
+	case RGB32F: return RGB;
+	case RGBA8:
+	case RGBA16F:
+	case RGBA32F: return RGBA;
+	case LUMINANCE8:
+	case LUMINANCE16F:
+	case LUMINANCE32F: return LUMINANCE;
+	case LUMINANCE_ALPHA8:
+	case LUMINANCE_ALPHA16F:
+	case LUMINANCE_ALPHA32F: return LUMINANCE_ALPHA;
+	default: return pf;
+	}
+}
+
 } // namespace GL
 } // namespace Msp