private void BindBlendState(bool force)
{
blendStateDirty |= force;
if (!blendStateDirty)
{
return;
}
if (force || blendState.Enable != boundBlendState.Enable)
{
if (blendState.Enable)
{
GL.Enable(EnableCap.Blend);
GLHelper.CheckGLErrors();
}
else
{
GL.Disable(EnableCap.Blend);
GLHelper.CheckGLErrors();
}
boundBlendState.Enable = blendState.Enable;
}
if (force || blendState.Enable)
{
if (force ||
blendState.ColorBlendFunc != boundBlendState.ColorBlendFunc ||
blendState.AlphaBlendFunc != boundBlendState.AlphaBlendFunc
)
{
GL.BlendEquationSeparate(
(BlendEquationMode)GLHelper.GetGLBlendEquationMode(blendState.ColorBlendFunc),
(BlendEquationMode)GLHelper.GetGLBlendEquationMode(blendState.AlphaBlendFunc));
GLHelper.CheckGLErrors();
boundBlendState.ColorBlendFunc = blendState.ColorBlendFunc;
boundBlendState.AlphaBlendFunc = blendState.AlphaBlendFunc;
}
if (force ||
blendState.ColorSrcBlend != boundBlendState.ColorSrcBlend ||
blendState.ColorDstBlend != boundBlendState.ColorDstBlend ||
blendState.AlphaSrcBlend != boundBlendState.AlphaSrcBlend ||
blendState.AlphaDstBlend != boundBlendState.AlphaDstBlend
)
{
GL.BlendFuncSeparate(
(BlendingFactorSrc)GLHelper.GetGLBlendFactor(blendState.ColorSrcBlend), (BlendingFactorDest)GLHelper.GetGLBlendFactor(blendState.ColorDstBlend),
(BlendingFactorSrc)GLHelper.GetGLBlendFactor(blendState.AlphaSrcBlend), (BlendingFactorDest)GLHelper.GetGLBlendFactor(blendState.AlphaDstBlend));
GLHelper.CheckGLErrors();
boundBlendState.ColorSrcBlend = blendState.ColorSrcBlend;
boundBlendState.ColorDstBlend = blendState.ColorDstBlend;
boundBlendState.AlphaSrcBlend = blendState.AlphaSrcBlend;
boundBlendState.AlphaDstBlend = blendState.AlphaDstBlend;
}
if (force || blendState.BlendFactor != boundBlendState.BlendFactor)
{
GL.BlendColor(
blendState.BlendFactor.R / 255f,
blendState.BlendFactor.G / 255f,
blendState.BlendFactor.B / 255f,
blendState.BlendFactor.A / 255f);
GLHelper.CheckGLErrors();
boundBlendState.BlendFactor = blendState.BlendFactor;
}
}
blendStateDirty = false;
}