X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fvertexarray.cpp;h=2bb6a6677b9ef5e2099a1a5922b1d2990910708c;hp=347e42595a1387bf7630a87344a6dc96f7425ac3;hb=d40673bd28c4b4524d3642b949d9d109dc6f9f24;hpb=11266e8093e56524a68de1d0a08d275de95c56a0

diff --git a/source/core/vertexarray.cpp b/source/core/vertexarray.cpp
index 347e4259..2bb6a667 100644
--- a/source/core/vertexarray.cpp
+++ b/source/core/vertexarray.cpp
@@ -11,14 +11,19 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
+VertexArray::VertexArray():
+	stride(0)
+{ }
+
 VertexArray::VertexArray(const VertexFormat &f)
 {
-	reset(f);
+	set_format(f);
 }
 
-void VertexArray::reset(const VertexFormat &f)
+void VertexArray::set_format(const VertexFormat &f)
 {
-	clear();
+	if(!format.empty())
+		throw invalid_operation("VertexArray::set_format");
 	format = f;
 	stride = format.stride();
 }
@@ -30,11 +35,15 @@ void VertexArray::clear()
 
 void VertexArray::reserve(unsigned n)
 {
+	if(format.empty())
+		throw invalid_operation("VertexArray::reserve");
 	data.reserve(n*stride);
 }
 
 float *VertexArray::append()
 {
+	if(format.empty())
+		throw invalid_operation("VertexArray::append");
 	data.insert(data.end(), stride, 0.0f);
 	update_offset();
 	dirty = true;
@@ -43,6 +52,8 @@ float *VertexArray::append()
 
 float *VertexArray::modify(unsigned i)
 {
+	if(format.empty())
+		throw invalid_operation("VertexArray::modify");
 	dirty = true;
 	return &data[0]+i*stride;
 }