public void ShouldCorrectlyAssignAllMembers()
{
const bool WIREFRAME_MODE = true;
const TriangleCullMode CULL_MODE = TriangleCullMode.NoCulling;
const bool FLIP_FACES = true;
const int DEPTH_BIAS = 10;
const float DEPTH_BIAS_CLAMP = 400f;
const float SLOPE_SCALED_DEPTH_BIAS = -340f;
const bool ENABLE_Z_CLIPPING = false;
RasterizerState testRSState = new RasterizerState(
WIREFRAME_MODE,
CULL_MODE,
FLIP_FACES,
DEPTH_BIAS,
DEPTH_BIAS_CLAMP,
SLOPE_SCALED_DEPTH_BIAS,
ENABLE_Z_CLIPPING
);
Assert.AreEqual(WIREFRAME_MODE, testRSState.WireframeMode);
Assert.AreEqual(CULL_MODE, testRSState.TriangleCulling);
Assert.AreEqual(FLIP_FACES, testRSState.FlipFaces);
Assert.AreEqual(DEPTH_BIAS, testRSState.DepthBias);
Assert.AreEqual(DEPTH_BIAS_CLAMP, testRSState.DepthBiasClamp);
Assert.AreEqual(SLOPE_SCALED_DEPTH_BIAS, testRSState.SlopeScaledDepthBias);
Assert.AreEqual(ENABLE_Z_CLIPPING, testRSState.EnableZClipping);
testRSState.Dispose();
}
/// <summary>
/// Constructs a new RasterizerState.
/// </summary>
/// <param name="wireframeMode">True if polygons should not be shaded in (instead only the connecting lines will be drawn).</param>
/// <param name="triangleCulling">The cull mode applied to drawn polygons.</param>
/// <param name="flipFaces">Whether or not to 'flip' faces, so that back-facing polygons are treated as forward-facing and vice-versa.</param>
/// <param name="depthBias">Depth value added to a given pixel.
/// See https://msdn.microsoft.com/en-us/library/windows/desktop/cc308048%28v=vs.85%29.aspx.</param>
/// <param name="depthBiasClamp">Maximum depth bias of a pixel.
/// See https://msdn.microsoft.com/en-us/library/windows/desktop/cc308048%28v=vs.85%29.aspx.</param>
/// <param name="slopeScaledDepthBias">Scalar on a given pixel's slope.
/// See https://msdn.microsoft.com/en-us/library/windows/desktop/cc308048%28v=vs.85%29.aspx.</param>
/// <param name="enableZClipping">Whether or not to enable depth-clipping.</param>
public RasterizerState(bool wireframeMode, TriangleCullMode triangleCulling, bool flipFaces,
int depthBias, float depthBiasClamp, float slopeScaledDepthBias, bool enableZClipping)
: base(
CreateRasterizerState(wireframeMode, triangleCulling, flipFaces, depthBias, depthBiasClamp, slopeScaledDepthBias, enableZClipping),
ResourceUsage.Immutable,
RSSTATE_SIZE_BYTES
)
{
WireframeMode = wireframeMode;
TriangleCulling = triangleCulling;
FlipFaces = flipFaces;
DepthBias = depthBias;
DepthBiasClamp = depthBiasClamp;
SlopeScaledDepthBias = slopeScaledDepthBias;
EnableZClipping = enableZClipping;
}
// Initialize all states blocks of various types used by WWT
private void initializeStates()
{
initializeBlendStates();
initializeDepthStencilStates();
initializeRasterizerStates();
initializeSamplerStates();
currentCullMode = TriangleCullMode.CullCounterClockwise;
devContext.Rasterizer.State = standardRasterizerStates[(int)currentCullMode];
}
// TODO: Extend this method with more commonly used rasterizer states
// If the number of possible state combinations becomes large, switch
// to a limited set of state blocks
public void setRasterizerState(TriangleCullMode cull, bool multisample = true)
{
if (cull != currentCullMode || multisample != currentMultisampleState)
{
currentCullMode = cull;
currentMultisampleState = multisample;
if (multisample)
{
devContext.Rasterizer.State = standardRasterizerStates[(int)currentCullMode];
}
else
{
devContext.Rasterizer.State = standardRasterizerStates[3];
}
}
}
/// <summary>
/// Constructs a new RasterizerState with default parameters for depth-testing.
/// </summary>
/// <param name="wireframeMode">True if polygons should not be shaded in (instead only the connecting lines will be drawn).</param>
/// <param name="triangleCulling">The cull mode applied to drawn polygons.</param>
/// <param name="flipFaces">Whether or not to 'flip' faces, so that back-facing polygons are treated as forward-facing and vice-versa.</param>
public RasterizerState(bool wireframeMode, TriangleCullMode triangleCulling, bool flipFaces)
: this(wireframeMode, triangleCulling, flipFaces, 0, 0f, 0f, true)
{
}
private static unsafe RasterizerStateResourceHandle CreateRasterizerState(bool wireframeMode, TriangleCullMode triangleCulling, bool flipFaces,
int depthBias, float depthBiasClamp, float slopeScaledDepthBias, bool enableZClipping)
{
RasterizerStateResourceHandle outResourceHandle;
InteropUtils.CallNative(NativeMethods.ResourceFactory_CreateRSState,
RenderingModule.Device,
wireframeMode ? FILL_MODE_WIREFRAME : FILL_MODE_SOLID,
(int)triangleCulling,
(InteropBool)flipFaces,
depthBias,
depthBiasClamp,
slopeScaledDepthBias,
(InteropBool)enableZClipping,
(IntPtr)(&outResourceHandle)
).ThrowOnFailure();
return(outResourceHandle);
}
