public void Draw(IRender render)
{
render.Apply();
if (demo.EnableVertexBuffer)
{
if (meshVertexBuffer != -1)
{
if (meshIndexBuffer != -1)
{
GL.EnableClientState(ArrayCap.VertexArray);
GL.EnableClientState(ArrayCap.NormalArray);
GL.EnableClientState(ArrayCap.TextureCoordArray);
GL.BindBuffer(BufferTarget.ArrayBuffer, meshVertexBuffer);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, meshIndexBuffer);
GL.VertexPointer(3, VertexPointerType.Float, VertexPositionNormalTexture.SizeInBytes, IntPtr.Zero);
GL.NormalPointer(NormalPointerType.Float, VertexPositionNormalTexture.SizeInBytes, (IntPtr)Vector3.SizeInBytes);
GL.TexCoordPointer(2, TexCoordPointerType.Float, VertexPositionNormalTexture.SizeInBytes, (IntPtr)(Vector3.SizeInBytes + Vector3.SizeInBytes));
GL.DrawElements(PrimitiveType.Triangles, indexCount, meshIndicesType, 0);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
GL.VertexPointer(3, VertexPointerType.Float, 0, IntPtr.Zero);
GL.NormalPointer(NormalPointerType.Float, 0, IntPtr.Zero);
GL.TexCoordPointer(2, TexCoordPointerType.Float, 0, IntPtr.Zero);
GL.DisableClientState(ArrayCap.VertexArray);
GL.DisableClientState(ArrayCap.NormalArray);
GL.DisableClientState(ArrayCap.TextureCoordArray);
}
else
{
GL.EnableClientState(ArrayCap.VertexArray);
GL.EnableClientState(ArrayCap.NormalArray);
GL.EnableClientState(ArrayCap.TextureCoordArray);
GL.BindBuffer(BufferTarget.ArrayBuffer, meshVertexBuffer);
GL.VertexPointer(3, VertexPointerType.Float, VertexPositionNormalTexture.SizeInBytes, IntPtr.Zero);
GL.NormalPointer(NormalPointerType.Float, VertexPositionNormalTexture.SizeInBytes, (IntPtr)Vector3.SizeInBytes);
GL.TexCoordPointer(2, TexCoordPointerType.Float, VertexPositionNormalTexture.SizeInBytes, (IntPtr)(Vector3.SizeInBytes + Vector3.SizeInBytes));
GL.DrawArrays(PrimitiveType.Triangles, 0, vertexCount);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GL.VertexPointer(3, VertexPointerType.Float, 0, IntPtr.Zero);
GL.NormalPointer(NormalPointerType.Float, 0, IntPtr.Zero);
GL.TexCoordPointer(2, TexCoordPointerType.Float, 0, IntPtr.Zero);
GL.DisableClientState(ArrayCap.VertexArray);
GL.DisableClientState(ArrayCap.NormalArray);
GL.DisableClientState(ArrayCap.TextureCoordArray);
}
}
}
else
{
VertexPositionNormalTexture v1, v2, v3;
if (meshIndices16Bit != null)
{
GL.Begin(PrimitiveType.Triangles);
for (int i = 0; i < indexCount; i += 3)
{
v1 = meshVertices[meshIndices16Bit[i]];
v2 = meshVertices[meshIndices16Bit[i + 1]];
v3 = meshVertices[meshIndices16Bit[i + 2]];
GL.TexCoord2(v1.TextureCoordinate);
GL.Normal3(v1.Normal);
GL.Vertex3(v1.Position);
GL.TexCoord2(v2.TextureCoordinate);
GL.Normal3(v2.Normal);
GL.Vertex3(v2.Position);
GL.TexCoord2(v3.TextureCoordinate);
GL.Normal3(v3.Normal);
GL.Vertex3(v3.Position);
}
GL.End();
}
else
if (meshIndices32Bit != null)
{
GL.Begin(PrimitiveType.Triangles);
for (int i = 0; i < indexCount; i += 3)
{
v1 = meshVertices[meshIndices32Bit[i]];
v2 = meshVertices[meshIndices32Bit[i + 1]];
v3 = meshVertices[meshIndices32Bit[i + 2]];
GL.TexCoord2(v1.TextureCoordinate);
GL.Normal3(v1.Normal);
GL.Vertex3(v1.Position);
GL.TexCoord2(v2.TextureCoordinate);
GL.Normal3(v2.Normal);
GL.Vertex3(v2.Position);
GL.TexCoord2(v3.TextureCoordinate);
GL.Normal3(v3.Normal);
GL.Vertex3(v3.Position);
}
GL.End();
}
else
{
GL.Begin(PrimitiveType.Triangles);
for (int i = 0; i < vertexCount; i += 3)
{
v1 = meshVertices[i];
v2 = meshVertices[i + 1];
v3 = meshVertices[i + 2];
GL.TexCoord2(v1.TextureCoordinate);
GL.Normal3(v1.Normal);
GL.Vertex3(v1.Position);
GL.TexCoord2(v2.TextureCoordinate);
GL.Normal3(v2.Normal);
GL.Vertex3(v2.Position);
GL.TexCoord2(v3.TextureCoordinate);
GL.Normal3(v3.Normal);
GL.Vertex3(v3.Position);
}
GL.End();
}
}
}