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Support additive blending for D2K explosions.

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This commit is contained in:
Paul Chote
2013-08-14 17:00:57 +12:00
parent 2b6b212d02
commit a1dd7cff7b
9 changed files with 55 additions and 26 deletions
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27
OpenRA.Renderer.SdlCommon/SdlGraphics.cs
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@@ -147,17 +147,24 @@ namespace OpenRA.Renderer.SdlCommon
ErrorHandler.CheckGlError();
}
public void EnableAlphaBlending()
public void SetBlendMode(BlendMode mode)
{
Gl.glEnable(Gl.GL_BLEND);
ErrorHandler.CheckGlError();
Gl.glBlendFunc(Gl.GL_SRC_ALPHA, Gl.GL_ONE_MINUS_SRC_ALPHA);
ErrorHandler.CheckGlError();
}
public void DisableAlphaBlending()
{
Gl.glDisable(Gl.GL_BLEND);
switch (mode)
{
case BlendMode.None:
Gl.glDisable(Gl.GL_BLEND);
break;
case BlendMode.Alpha:
Gl.glEnable(Gl.GL_BLEND);
ErrorHandler.CheckGlError();
Gl.glBlendFunc(Gl.GL_SRC_ALPHA, Gl.GL_ONE_MINUS_SRC_ALPHA);
break;
case BlendMode.Additive:
Gl.glEnable(Gl.GL_BLEND);
ErrorHandler.CheckGlError();
Gl.glBlendFunc(Gl.GL_ONE, Gl.GL_ONE);
break;
}
ErrorHandler.CheckGlError();
}