Copy the material slot of RenderPass

[libs/gl.git] / source / vertexarray.h

diff --git a/source/vertexarray.h b/source/vertexarray.h
index 9610905d218994fcb2e539a6fe06d1a4e3934a41..6e54f681717f4269fb135f66bd18420b5d87943e 100644 (file)
--- a/source/vertexarray.h
+++ b/source/vertexarray.h
@@ -1,26 +1,34 @@
-/* $Id$
-
-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 <msp/datafile/loader.h>
-#include "types.h"
+#include "bindable.h"
+#include "bufferable.h"
+#include "datatype.h"
+#include "primitivetype.h"
 #include "vertexarraybuilder.h"
 #include "vertexformat.h"
 
 namespace Msp {
 namespace GL {
 
-class VertexBuffer;
+class Buffer;
+
+/**
+Stores vertex data.  Both legacy and generic attributes are supported.  Mixing
+the two is possible but discouraged, as driver-specific issues may arise.
 
-class VertexArray
+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.
+
+A higher-level interface for filling in vertex data is available in the
+VertexArrayBuilder class.
+*/
+class VertexArray: public Bindable<VertexArray>, public Bufferable
 {
 public:
        class Loader: public DataFile::Loader, public VertexArrayBuilder
@@ -29,30 +37,70 @@ public:
                Loader(VertexArray &);
        };
 
-       VertexArray(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();
-       void         reset(VertexFormat);
-       RefPtr<VertexArrayBuilder> modify();
-       void         apply() const;
-       void         update_data();
 private:
+       struct Array
+       {
+               unsigned char component;
+               unsigned char offset;
+
+               Array();
+       };
+
        VertexFormat format;
        std::vector<float> data;
-       uint         stride;
-       VertexBuffer *vbuf;
-       bool         own_vbuf;
+       unsigned stride;
+       std::vector<Array> arrays;
+       bool legacy;
+
+       static bool legacy_used;
 
        VertexArray(const VertexArray &);
        VertexArray &operator=(const VertexArray &);
-       void set_array(unsigned, unsigned, unsigned) const;
+public:
+       VertexArray(const VertexFormat &);
+       ~VertexArray();
 
-       static unsigned enabled_arrays;
+       /// Resets the VertexArray to a different format.  All data is cleared.
+       void reset(const VertexFormat &);
+
+       const VertexFormat &get_format() const { return format; }
+private:
+       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; }
+
+       /** Equivalent to apply(true).  For compatibility with the Bindable
+       interface. */
+       void bind() const { apply(); }
+
+       /** 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