-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_GL_VERTEXARRAY_H_
#define MSP_GL_VERTEXARRAY_H_
+#include <climits>
#include <vector>
#include <msp/core/refptr.h>
-#include "types.h"
+#include <msp/datafile/loader.h>
+#include "bindable.h"
+#include "bufferable.h"
+#include "datatype.h"
+#include "primitivetype.h"
+#include "vertexarraybuilder.h"
+#include "vertexformat.h"
namespace Msp {
namespace GL {
-class VertexArray;
-class VertexBuffer;
+class Buffer;
-enum VertexFormat
-{
- NODATA=0,
- VERTEX2=1,
- VERTEX3,
- VERTEX4,
- NORMAL3=6,
- TEXCOORD1=8,
- TEXCOORD2,
- TEXCOORD3,
- TEXCOORD4,
- COLOR4_UBYTE=12,
- COLOR3_FLOAT=14,
- COLOR4_FLOAT,
-};
+/**
+Stores vertex data. Both legacy and generic attributes are supported. Mixing
+the two is possible but discouraged, as driver-specific issues may arise.
-inline VertexFormat operator,(VertexFormat a, VertexFormat b) { return VertexFormat((a<<4)|b); }
-uint get_stride(VertexFormat);
+The array's contents can be modified with the append and modify methods. To
+obtain the location of an individual component within the vertex, use
+VertexFormat::offset.
-class VertexArrayBuilder
+A higher-level interface for filling in vertex data is available in the
+VertexArrayBuilder class.
+*/
+class VertexArray: public Bindable<VertexArray>, public Bufferable
{
public:
- std::vector<float> &data;
-
- VertexArrayBuilder(VertexArray &, std::vector<float> &);
- void vertex(float x, float y) { vertex(x, y, 0, 1); }
- void vertex(float x, float y, float z) { vertex(x, y, z, 1); }
- void vertex(float, float, float, float);
- void normal(float x, float y, float z) { nx=x; ny=y; nz=z; }
- void texcoord(float s) { texcoord(s, 0, 0, 1); }
- void texcoord(float s, float t) { texcoord(s, t, 0, 1); }
- void texcoord(float s, float t, float r) { texcoord(s, t, r, 1); }
- void texcoord(float s, float t, float r, float q) { ts=s; tt=t; tr=r; tq=q; }
- void color(ubyte r, ubyte g, ubyte b) { color(r, g, b, 255); }
- void color(ubyte r, ubyte g, ubyte b, ubyte a) { color(r/255.f, g/255.f, b/255.f, a/255.f); }
- void color(float r, float g, float b) { color(r, g, b, 1); }
- void color(float r, float g, float b, float a) { cr=r; cg=g; cb=b; ca=a; }
- ~VertexArrayBuilder();
+ class Loader: public DataFile::Loader, public VertexArrayBuilder
+ {
+ public:
+ Loader(VertexArray &);
+ };
+
private:
- VertexArray &array;
+ struct Array
+ {
+ unsigned char component;
+ unsigned char offset;
+
+ Array();
+ };
+
VertexFormat format;
- uint stride;
+ std::vector<float> data;
+ unsigned stride;
+ std::vector<Array> arrays;
+ bool legacy;
- float cr, cg, cb, ca; // Color
- float ts, tt, tr, tq; // TexCoord
- float nx, ny, nz; // Normal
-};
+ static bool legacy_used;
-class VertexArray
-{
+ VertexArray(const VertexArray &);
+ VertexArray &operator=(const VertexArray &);
public:
- VertexArray(VertexFormat);
+ VertexArray(const VertexFormat &);
~VertexArray();
- VertexFormat get_format() const { return format; }
- const std::vector<float> &get_data() const { return data; }
- void use_vertex_buffer();
- void use_vertex_buffer(VertexBuffer *);
- void clear();
- RefPtr<VertexArrayBuilder> modify() { return new VertexArrayBuilder(*this, data); }
- void apply() const;
- void update_data();
+ /// Resets the VertexArray to a different format. All data is cleared.
+ void reset(const VertexFormat &);
+
+ const VertexFormat &get_format() const { return format; }
private:
- VertexFormat format;
- std::vector<float> data;
- uint stride;
- VertexBuffer *vbuf;
- bool own_vbuf;
+ static unsigned get_array_slot(unsigned char);
+
+public:
+ /// Clears all vertices from the array.
+ void clear();
+
+ /// Reserve space for vertices.
+ void reserve(unsigned);
+
+ /// Append a new vertex at the end of the array and return its location.
+ float *append();
+
+ /// Returns the location of a vertex for modification.
+ float *modify(unsigned);
+private:
+ virtual unsigned get_data_size() const;
+ virtual const void *get_data_pointer() const { return &data[0]; }
+
+public:
+ unsigned size() const { return data.size()/stride; }
+ const std::vector<float> &get_data() const { return data; }
+ const float *operator[](unsigned i) const { return &data[0]+i*stride; }
- void set_array(unsigned, unsigned, unsigned) const;
+ /** Equivalent to apply(true). For compatibility with the Bindable
+ interface. */
+ void bind() const { apply(); }
- static unsigned enabled_arrays;
+ /** Applies component arrays to the GL. If legacy is true, they are applied
+ as is. If legacy is false, any legacy attributes are converted to generic
+ attributes. */
+ void apply(bool legacy = true) const;
+
+private:
+ static void apply_arrays(const std::vector<Array> *, const std::vector<Array> *, const float *, unsigned, bool);
+public:
+ static void unbind();
};
} // namespace GL
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