-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <msp/gl/extensions/arb_texture_float.h>
+#include <msp/gl/extensions/ext_bgra.h>
+#include <msp/strings/format.h>
#include "pixelformat.h"
using namespace std;
namespace Msp {
namespace GL {
-istream &operator>>(istream &in, PixelFormat &fmt)
+void operator>>(const LexicalConverter &conv, PixelFormat &fmt)
{
- string word;
-
- in>>word;
- if(word=="COLOR_INDEX")
- fmt=COLOR_INDEX;
- else if(word=="STENCIL_INDEX")
- fmt=STENCIL_INDEX;
- else if(word=="DEPTH_COMPONENT")
- fmt=DEPTH_COMPONENT;
- else if(word=="RED")
- fmt=RED;
- else if(word=="GREEN")
- fmt=GREEN;
- else if(word=="BLUE")
- fmt=BLUE;
- else if(word=="ALPHA")
- fmt=ALPHA;
- else if(word=="RGB")
- fmt=RGB;
- else if(word=="RGBA")
- fmt=RGBA;
- else if(word=="BGR")
- fmt=BGR;
- else if(word=="BGRA")
- fmt=BGRA;
- else if(word=="LUMINANCE")
- fmt=LUMINANCE;
- else if(word=="LUMINANCE_ALPHA")
- fmt=LUMINANCE_ALPHA;
+ if(conv.get()=="COLOR_INDEX")
+ fmt = COLOR_INDEX;
+ else if(conv.get()=="STENCIL_INDEX")
+ fmt = STENCIL_INDEX;
+ else if(conv.get()=="DEPTH_COMPONENT")
+ fmt = DEPTH_COMPONENT;
+ else if(conv.get()=="RED")
+ fmt = RED;
+ else if(conv.get()=="GREEN")
+ fmt = GREEN;
+ else if(conv.get()=="BLUE")
+ fmt = BLUE;
+ else if(conv.get()=="ALPHA")
+ fmt = ALPHA;
+ else if(conv.get()=="RGB")
+ fmt = RGB;
+ else if(conv.get()=="RGBA")
+ fmt = RGBA;
+ else if(conv.get()=="BGR")
+ fmt = BGR;
+ else if(conv.get()=="BGRA")
+ fmt = BGRA;
+ else if(conv.get()=="LUMINANCE")
+ fmt = LUMINANCE;
+ else if(conv.get()=="LUMINANCE_ALPHA")
+ fmt = LUMINANCE_ALPHA;
else
- in.setstate(ios_base::failbit);
+ throw lexical_error(format("conversion of '%s' to PixelFormat", conv.get()));
+}
- 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 invalid_argument("pixelformat_from_graphics");
+ }
+}
+
+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;
+ }
+}
+
+void require_pixelformat(PixelFormat pf)
+{
+ switch(pf)
+ {
+ case RGB16F:
+ case RGB32F:
+ case RGBA16F:
+ case RGBA32F:
+ case LUMINANCE16F:
+ case LUMINANCE32F:
+ case LUMINANCE_ALPHA16F:
+ case LUMINANCE_ALPHA32F:
+ { static Require _req(ARB_texture_float); }
+ break;
+ case BGR:
+ case BGRA:
+ { static Require _req(EXT_bgra); }
+ break;
+ default:
+ break;
+ }
}
} // namespace GL