Add append() method and and operator[] to VertexArray

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

diff --git a/source/vertexarray.cpp b/source/vertexarray.cpp
index c0ca8dca80f22b96f1efdfe8f9de6ccd9dc04ffd..c166e98718338c55bcfb175dde856d7c44e41c74 100644 (file)
--- a/source/vertexarray.cpp
+++ b/source/vertexarray.cpp
@@ -33,18 +33,22 @@ VertexArray::~VertexArray()
 
 void VertexArray::use_vertex_buffer()
 {
-       if(vbuf) return;
+       if(vbuf && own_vbuf)
+               return;
 
        vbuf=new VertexBuffer();
        own_vbuf=true;
+
        update_data();
 }
 
 void VertexArray::use_vertex_buffer(VertexBuffer *b)
 {
-       if(vbuf) return;
-
+       if(own_vbuf)
+               delete vbuf;
        vbuf=b;
+       own_vbuf=false;
+
        update_data();
 }
 
@@ -67,11 +71,6 @@ void VertexArray::reset(VertexFormat f)
        stride=get_stride(format);
 }
 
-RefPtr<VertexArrayBuilder> VertexArray::modify()
-{
-       return new VertexArrayBuilder(*this);
-}
-
 void VertexArray::apply() const
 {
        if(format==NODATA)
@@ -114,7 +113,8 @@ void VertexArray::apply() const
        set_array(GL_TEXTURE_COORD_ARRAY, found&4, 4);
        set_array(GL_COLOR_ARRAY, found&8, 8);
 
-       VertexBuffer::unbind();
+       if(vbuf)
+               VertexBuffer::unbind();
 }
 
 /**
@@ -123,7 +123,16 @@ Updates the VertexArray data to the VertexBuffer tied to the array, if any.
 void VertexArray::update_data()
 {
        if(vbuf)
+       {
                vbuf->data(data.size()*sizeof(float), &data[0]);
+               VertexBuffer::unbind();
+       }
+}
+
+float *VertexArray::append()
+{
+       data.insert(data.end(), stride, 0.0f);
+       return &*data.end()-stride;
 }
 
 void VertexArray::set_array(unsigned array, unsigned bit, unsigned mask) const