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render perf improvement: BufferSubData, and don't use the same buffer back-to-back

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This commit is contained in:
Bob
2010-09-24 14:55:28 +12:00
parent c77c63a380
commit cdcfeb6276
7 changed files with 83 additions and 52 deletions
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18
OpenRA.Gl/IndexBuffer.cs
View File

@@ -22,13 +22,21 @@ namespace OpenRA.GlRenderer
{
Gl.glGenBuffers(1, out buffer);
GraphicsDevice.CheckGlError();
}
public void SetData(ushort[] data)
{
Bind();
Gl.glBufferData(Gl.GL_ELEMENT_ARRAY_BUFFER,
new IntPtr(2 * data.Length), data, Gl.GL_DYNAMIC_DRAW);
new IntPtr(2 * size),
new ushort[ size ],
Gl.GL_DYNAMIC_DRAW);
GraphicsDevice.CheckGlError();
}
public void SetData(ushort[] data, int length)
{
Bind();
Gl.glBufferSubData(Gl.GL_ELEMENT_ARRAY_BUFFER,
IntPtr.Zero,
new IntPtr(2 * length),
data);
GraphicsDevice.CheckGlError();
}

18
OpenRA.Gl/VertexBuffer.cs
View File

@@ -24,13 +24,21 @@ namespace OpenRA.GlRenderer
{
Gl.glGenBuffers(1, out buffer);
GraphicsDevice.CheckGlError();
}
public void SetData(T[] data)
{
Bind();
Gl.glBufferData(Gl.GL_ARRAY_BUFFER,
new IntPtr(Marshal.SizeOf(typeof(T)) * data.Length), data, Gl.GL_DYNAMIC_DRAW);
new IntPtr(Marshal.SizeOf(typeof(T)) * size),
new T[ size ],
Gl.GL_DYNAMIC_DRAW);
GraphicsDevice.CheckGlError();
}
public void SetData(T[] data, int length)
{
Bind();
Gl.glBufferSubData(Gl.GL_ARRAY_BUFFER,
IntPtr.Zero,
new IntPtr(Marshal.SizeOf(typeof(T)) * length),
data);
GraphicsDevice.CheckGlError();
}