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Replace MiniTK.Graphics with custom OpenGL shim.

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This commit is contained in:
Paul Chote
2015-12-26 13:49:28 +00:00
parent 4660b7156d
commit 397ca0f481
8 changed files with 614 additions and 171 deletions
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51
OpenRA.Platforms.Default/VertexBuffer.cs
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@@ -10,7 +10,6 @@
using System;
using System.Runtime.InteropServices;
using OpenTK.Graphics.OpenGL;
namespace OpenRA.Platforms.Default
{
@@ -18,18 +17,28 @@ namespace OpenRA.Platforms.Default
where T : struct
{
static readonly int VertexSize = Marshal.SizeOf(typeof(T));
int buffer;
uint buffer;
bool disposed;
public VertexBuffer(int size)
{
GL.GenBuffers(1, out buffer);
OpenGL.glGenBuffers(1, out buffer);
ErrorHandler.CheckGlError();
Bind();
GL.BufferData(BufferTarget.ArrayBuffer,
new IntPtr(VertexSize * size),
new T[size],
BufferUsageHint.DynamicDraw);
var ptr = GCHandle.Alloc(new T[size], GCHandleType.Pinned);
try
{
OpenGL.glBufferData(OpenGL.GL_ARRAY_BUFFER,
new IntPtr(VertexSize * size),
ptr.AddrOfPinnedObject(),
OpenGL.GL_DYNAMIC_DRAW);
}
finally
{
ptr.Free();
}
ErrorHandler.CheckGlError();
}
@@ -41,17 +50,27 @@ namespace OpenRA.Platforms.Default
public void SetData(T[] data, int start, int length)
{
Bind();
GL.BufferSubData(BufferTarget.ArrayBuffer,
new IntPtr(VertexSize * start),
new IntPtr(VertexSize * length),
data);
var ptr = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
OpenGL.glBufferSubData(OpenGL.GL_ARRAY_BUFFER,
new IntPtr(VertexSize * start),
new IntPtr(VertexSize * length),
ptr.AddrOfPinnedObject());
}
finally
{
ptr.Free();
}
ErrorHandler.CheckGlError();
}
public void SetData(IntPtr data, int start, int length)
{
Bind();
GL.BufferSubData(BufferTarget.ArrayBuffer,
OpenGL.glBufferSubData(OpenGL.GL_ARRAY_BUFFER,
new IntPtr(VertexSize * start),
new IntPtr(VertexSize * length),
data);
@@ -61,11 +80,11 @@ namespace OpenRA.Platforms.Default
public void Bind()
{
VerifyThreadAffinity();
GL.BindBuffer(BufferTarget.ArrayBuffer, buffer);
OpenGL.glBindBuffer(OpenGL.GL_ARRAY_BUFFER, buffer);
ErrorHandler.CheckGlError();
GL.VertexAttribPointer(Shader.VertexPosAttributeIndex, 3, VertexAttribPointerType.Float, false, VertexSize, IntPtr.Zero);
OpenGL.glVertexAttribPointer(Shader.VertexPosAttributeIndex, 3, OpenGL.GL_FLOAT, false, VertexSize, IntPtr.Zero);
ErrorHandler.CheckGlError();
GL.VertexAttribPointer(Shader.TexCoordAttributeIndex, 4, VertexAttribPointerType.Float, false, VertexSize, new IntPtr(12));
OpenGL.glVertexAttribPointer(Shader.TexCoordAttributeIndex, 4, OpenGL.GL_FLOAT, false, VertexSize, new IntPtr(12));
ErrorHandler.CheckGlError();
}
@@ -85,7 +104,7 @@ namespace OpenRA.Platforms.Default
if (disposed)
return;
disposed = true;
GL.DeleteBuffers(1, ref buffer);
OpenGL.glDeleteBuffers(1, ref buffer);
}
}
}