/// <summary> This sets the GL state variables to the render state this object requires. Called by RenderableItem</summary>
public void ApplyState(GLRenderState newstate) // apply deltas to GL
{
// general
//System.Diagnostics.Debug.WriteLine("Apply " + newstate.PrimitiveType + " Fixed state " + newstate.ApplyFixed);
if (newstate.PrimitiveRestart != PrimitiveRestart)
{
//System.Diagnostics.Debug.WriteLine("Set PR to {0}", newstate.PrimitiveRestart);
if (newstate.PrimitiveRestart.HasValue) // is new state has value
{
if (PrimitiveRestart == null) // if last was off, turn it on
{
GL.Enable(EnableCap.PrimitiveRestart);
}
GL.PrimitiveRestartIndex(newstate.PrimitiveRestart.Value); // set
}
else
{
GL.Disable(EnableCap.PrimitiveRestart); // else disable
}
PrimitiveRestart = newstate.PrimitiveRestart;
}
if (ClipDistanceEnable != newstate.ClipDistanceEnable) // if changed
{
if (newstate.ClipDistanceEnable > ClipDistanceEnable)
{
for (int i = ClipDistanceEnable; i < newstate.ClipDistanceEnable; i++)
{
GL.Enable(EnableCap.ClipDistance0 + i);
}
}
else if (newstate.ClipDistanceEnable < ClipDistanceEnable)
{
for (int i = ClipDistanceEnable - 1; i >= newstate.ClipDistanceEnable; i--)
{
GL.Disable(EnableCap.ClipDistance0 + i);
}
}
ClipDistanceEnable = newstate.ClipDistanceEnable;
}
if (DepthTest != newstate.DepthTest)
{
DepthTest = newstate.DepthTest;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.DepthTest, DepthTest);
// System.Diagnostics.Debug.WriteLine("Depth Test " + DepthTest);
}
if (DepthFunctionMode != newstate.DepthFunctionMode)
{
DepthFunctionMode = newstate.DepthFunctionMode;
GL.DepthFunc(DepthFunctionMode);
}
if (WriteDepthBuffer != newstate.WriteDepthBuffer)
{
WriteDepthBuffer = newstate.WriteDepthBuffer;
GL.DepthMask(WriteDepthBuffer);
}
if (DepthClamp != newstate.DepthClamp)
{
DepthClamp = newstate.DepthClamp;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.DepthClamp, DepthClamp);
// System.Diagnostics.Debug.WriteLine("Depth Clamp" + DepthClamp.Value);
}
if (BlendEnable != newstate.BlendEnable)
{
BlendEnable = newstate.BlendEnable;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.Blend, BlendEnable);
}
// blend on, we have new values for blend equation
if (BlendEnable == true)
{
if (BlendSourceRGB != newstate.BlendSourceRGB || BlendDestRGB != newstate.BlendDestRGB ||
BlendSourceA != newstate.BlendSourceA || BlendDestA != newstate.BlendDestA)
{
BlendSourceRGB = newstate.BlendSourceRGB;
BlendDestRGB = newstate.BlendDestRGB;
BlendSourceA = newstate.BlendSourceA;
BlendDestA = newstate.BlendDestA;
GL.BlendFuncSeparate(BlendSourceRGB, BlendDestRGB, BlendSourceA, BlendDestA);
}
if (BlendEquationRGB != newstate.BlendEquationRGB || BlendEquationA != newstate.BlendEquationA)
{
BlendEquationRGB = newstate.BlendEquationRGB;
BlendEquationA = newstate.BlendEquationA;
GL.BlendEquationSeparate(BlendEquationRGB, BlendEquationA);
}
}
if (ColorMasking != newstate.ColorMasking)
{
ColorMasking = newstate.ColorMasking;
GL.ColorMask((ColorMasking & ColorMask.Red) == ColorMask.Red, (ColorMasking & ColorMask.Green) == ColorMask.Green,
(ColorMasking & ColorMask.Blue) == ColorMask.Blue, (ColorMasking & ColorMask.Alpha) == ColorMask.Alpha);
}
if (newstate.Discard != Discard)
{
Discard = newstate.Discard;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.RasterizerDiscard, Discard);
//System.Diagnostics.Debug.WriteLine("RS Discard " + Discard);
}
// ---------------------------------- Below are default null
// Geo shaders
if (newstate.PatchSize.HasValue && PatchSize != newstate.PatchSize)
{
PatchSize = newstate.PatchSize;
GL.PatchParameter(PatchParameterInt.PatchVertices, PatchSize.Value);
}
// points
if (newstate.PointSize.HasValue && PointSize != newstate.PointSize)
{
if (newstate.PointSize > 0) // if fixed point size
{
if (PointSize == null || newstate.PointSize != PointSize.Value)
{
GL.PointSize(newstate.PointSize.Value); // set if different
}
if (PointSize == null || PointSize == 0) // if previous was off
{
GL.Disable(EnableCap.ProgramPointSize);
}
}
else
{
GL.Enable(EnableCap.ProgramPointSize);
}
PointSize = newstate.PointSize;
}
if (newstate.PointSprite.HasValue && PointSprite != newstate.PointSprite)
{
PointSprite = newstate.PointSprite;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.PointSprite, PointSprite.Value);
}
if (newstate.PointSmooth.HasValue && PointSmooth != newstate.PointSmooth)
{
PointSmooth = newstate.PointSmooth;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.PointSmooth, PointSmooth.Value);
}
// lines
if (newstate.LineWidth.HasValue && LineWidth != newstate.LineWidth)
{
LineWidth = newstate.LineWidth;
GL.LineWidth(LineWidth.Value);
}
if (newstate.LineSmooth.HasValue && LineSmooth != newstate.LineSmooth)
{
LineSmooth = newstate.LineSmooth;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.LineSmooth, LineSmooth.Value);
}
// triangles
if (newstate.PolygonModeFrontAndBack.HasValue && PolygonModeFrontAndBack != newstate.PolygonModeFrontAndBack)
{
PolygonModeFrontAndBack = newstate.PolygonModeFrontAndBack;
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonModeFrontAndBack.Value);
}
if (newstate.PolygonSmooth.HasValue && PolygonSmooth != newstate.PolygonSmooth)
{
PolygonSmooth = newstate.PolygonSmooth;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.PolygonSmooth, PolygonSmooth.Value);
}
if (newstate.CullFace.HasValue && CullFace != newstate.CullFace)
{
CullFace = newstate.CullFace;
GLStatics.SetEnable(OpenTK.Graphics.OpenGL.EnableCap.CullFace, CullFace.Value);
// System.Diagnostics.Debug.WriteLine("Cull mode " + CullFace.Value);
}
if (newstate.FrontFace.HasValue && FrontFace != newstate.FrontFace)
{
FrontFace = newstate.FrontFace;
GL.FrontFace(FrontFace.Value);
}
}
