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Guard BindBuffer/BufferData calls for empty arrays

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- Issue MatterHackers/MCCentral#3843
Crash when model is floating above plate with no supports
This commit is contained in:
John Lewin 2018-07-12 12:07:33 -07:00
parent 79804f354b
commit 18fd48d562
1 changed files with 14 additions and 8 deletions
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22
MatterControl.OpenGL/GCodeRenderer/GCodeVertexBuffer.cs
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@ -49,23 +49,29 @@ namespace MatterHackers.GCodeVisualizer
// Set vertex data
myVertexLength = colorData.Length;
GL.BindBuffer(BufferTarget.ArrayBuffer, myVertexId);
unsafe
if (myVertexLength > 0)
{
fixed (ColorVertexData* dataPointer = colorData)
GL.BindBuffer(BufferTarget.ArrayBuffer, myVertexId);
unsafe
{
GL.BufferData(BufferTarget.ArrayBuffer, colorData.Length * ColorVertexData.Stride, (IntPtr)dataPointer, BufferUsageHint.StaticDraw);
fixed (ColorVertexData* dataPointer = colorData)
{
GL.BufferData(BufferTarget.ArrayBuffer, colorData.Length * ColorVertexData.Stride, (IntPtr)dataPointer, BufferUsageHint.StaticDraw);
}
}
}
// Set index data
myIndexLength = indexData.Length;
GL.BindBuffer(BufferTarget.ElementArrayBuffer, myIndexId);
unsafe
if (myIndexLength > 0)
{
fixed (int* dataPointer = indexData)
GL.BindBuffer(BufferTarget.ElementArrayBuffer, myIndexId);
unsafe
{
GL.BufferData(BufferTarget.ElementArrayBuffer, indexData.Length * sizeof(int), (IntPtr)dataPointer, BufferUsageHint.StaticDraw);
fixed (int* dataPointer = indexData)
{
GL.BufferData(BufferTarget.ElementArrayBuffer, indexData.Length * sizeof(int), (IntPtr)dataPointer, BufferUsageHint.StaticDraw);
}
}
}
}