X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fvertexformat.h;fp=source%2Fcore%2Fvertexformat.h;h=3561292245fc640deb2859629cbf8f39c1776e5b;hp=0000000000000000000000000000000000000000;hb=7aaec9a70b8d7733429bec043f8e33e02956f266;hpb=bec07999d95b76f4b47cffcc564d0cd0afc0435e

diff --git a/source/core/vertexformat.h b/source/core/vertexformat.h
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+++ b/source/core/vertexformat.h
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+#ifndef MSP_GL_VERTEXFORMAT_H_
+#define MSP_GL_VERTEXFORMAT_H_
+
+#include <msp/strings/lexicalcast.h>
+
+namespace Msp {
+namespace GL {
+
+/** A single vertex component.  Symbolic names are provided for commonly used
+attributes.  These are aliased with with generic attributes, so be careful when
+picking your attribute indices. */
+enum VertexComponent
+{
+	VERTEX2 = 1,
+	VERTEX3,
+	VERTEX4,
+	NORMAL3 = 10,
+	COLOR4_UBYTE = 12,
+	COLOR3_FLOAT = 14,
+	COLOR4_FLOAT,
+	TANGENT3 = 18,
+	BINORMAL3 = 22,
+	TEXCOORD1 = 32,
+	TEXCOORD2,
+	TEXCOORD3,
+	TEXCOORD4,
+	ATTRIB1 = 64,
+	ATTRIB2,
+	ATTRIB3,
+	ATTRIB4
+};
+
+class VertexFormat
+{
+private:
+	enum { MAX_COMPONENTS = 15 };
+
+	unsigned char count;
+	unsigned char components[MAX_COMPONENTS];
+
+public:
+	VertexFormat();
+	VertexFormat(VertexComponent);
+
+	VertexFormat operator,(VertexComponent c) const;
+	VertexFormat operator,(unsigned i) const;
+	bool operator==(const VertexFormat &) const;
+	bool operator!=(const VertexFormat &other) const { return !(*this==other); }
+
+	bool empty() const { return !count; }
+	const unsigned char *begin() const { return components; }
+	const unsigned char *end() const { return components+count; }
+	unsigned stride() const;
+	int offset(VertexComponent) const;
+};
+
+inline VertexFormat operator,(VertexComponent c1, VertexComponent c2)
+{ return (VertexFormat(c1), c2); }
+
+inline VertexFormat operator,(VertexComponent c, unsigned i)
+{ return (VertexFormat(c), i); }
+
+VertexComponent make_indexed_component(VertexComponent, unsigned);
+
+inline unsigned get_component_type(unsigned char c)
+{ return c>>2; }
+
+inline unsigned get_component_size(unsigned char c)
+{ return (c&3)+1; }
+
+inline unsigned get_stride(const VertexFormat &f)
+{ return f.stride(); }
+
+void operator>>(const LexicalConverter &, VertexComponent &);
+
+} // namespace GL
+} // namespace Msp
+
+#endif