public Renderer(DynamicRenderable[] dynamics = null, Renderable[] renderables = null)
{
watch = new Stopwatch();
if (dynamics != null)
_dynamics = dynamics;
if (renderables != null)
_renderables = renderables;
}
Buffers Load(Renderable renderable)
{
int size;
Buffers buf = new Buffers();
var shape = renderable.Shape;
GL.GenBuffers(1, out buf.vertex_buffer_object);
GL.GenBuffers(1, out buf.color_buffer_object);
GL.GenBuffers(1, out buf.element_buffer_object);
GL.GenBuffers(1, out buf.normal_buffer_object);
GL.GenBuffers(1, out buf.tex_buffer_object);
// Upload the vertex buffer.
GL.BindBuffer(BufferTarget.ArrayBuffer, buf.vertex_buffer_object);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(shape.Vertices.Length * 3 * sizeof(float)), shape.Vertices,
BufferUsageHint.StaticDraw);
GL.GetBufferParameter(BufferTarget.ArrayBuffer, BufferParameterName.BufferSize, out size);
if (size != shape.Vertices.Length * 3 * sizeof(Single))
throw new ApplicationException(String.Format(
"Problem uploading vertex buffer to VBO (vertices). Tried to upload {0} bytes, uploaded {1}.",
shape.Vertices.Length * 3 * sizeof(Single), size));
// Upload the color buffer.
GL.BindBuffer(BufferTarget.ArrayBuffer, buf.color_buffer_object);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(shape.Colors.Length * sizeof(int)), shape.Colors,
BufferUsageHint.StaticDraw);
GL.GetBufferParameter(BufferTarget.ArrayBuffer, BufferParameterName.BufferSize, out size);
if (size != shape.Colors.Length * sizeof(int))
throw new ApplicationException(String.Format(
"Problem uploading vertex buffer to VBO (colors). Tried to upload {0} bytes, uploaded {1}.",
shape.Colors.Length * sizeof(int), size));
// Upload the index buffer (elements inside the vertex buffer, not color indices as per the IndexPointer function!)
GL.BindBuffer(BufferTarget.ElementArrayBuffer, buf.element_buffer_object);
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(shape.Indices.Length * sizeof(Int32)), shape.Indices,
BufferUsageHint.StaticDraw);
GL.GetBufferParameter(BufferTarget.ElementArrayBuffer, BufferParameterName.BufferSize, out size);
if (size != shape.Indices.Length * sizeof(int))
throw new ApplicationException(String.Format(
"Problem uploading vertex buffer to VBO (offsets). Tried to upload {0} bytes, uploaded {1}.",
shape.Indices.Length * sizeof(int), size));
GL.BindBuffer(BufferTarget.ArrayBuffer, buf.normal_buffer_object);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(shape.Normals.Length * 3 * sizeof(float)), shape.Normals,
BufferUsageHint.StaticDraw);
GL.GetBufferParameter(BufferTarget.ArrayBuffer, BufferParameterName.BufferSize, out size);
if (size != shape.Normals.Length * sizeof(float) * 3)
throw new ApplicationException(String.Format(
"Problem uploading vertex buffer to VBO (offsets). Tried to upload {0} bytes, uploaded {1}.",
shape.Normals.Length * sizeof(float) * 3, size));
GL.BindBuffer(BufferTarget.ArrayBuffer, buf.tex_buffer_object);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(shape.Texcoords.Length * 2 * sizeof(float)), shape.Texcoords,
BufferUsageHint.StaticDraw);
GL.GetBufferParameter(BufferTarget.ArrayBuffer, BufferParameterName.BufferSize, out size);
if (size != shape.Texcoords.Length * sizeof(float) * 2)
throw new ApplicationException(String.Format(
"Problem uploading vertex buffer to VBO (offsets). Tried to upload {0} bytes, uploaded {1}.",
shape.Texcoords.Length * sizeof(float) * 2, size));
return buf;
}
