110 lines
1.8 KiB
C#
110 lines
1.8 KiB
C#
namespace Ghost.Core.Graphics;
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public enum ZTest : byte
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{
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Disabled,
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Less,
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LessEqual,
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Equal,
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GreaterEqual,
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Greater,
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NotEqual,
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Always
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}
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public enum ZWrite : byte
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{
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Off,
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On
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}
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public enum Cull : byte
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{
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Off,
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Front,
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Back
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}
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public enum Blend : byte
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{
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Opaque,
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Alpha,
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Additive,
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Multiply,
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PremultipliedAlpha
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}
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[Flags]
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public enum ColorWriteMask : byte
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{
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None = 0,
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Red = 1 << 0,
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Green = 1 << 1,
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Blue = 1 << 2,
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Alpha = 1 << 3,
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All = Red | Green | Blue | Alpha
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}
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public struct PipelineState
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{
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public ZTest ZTest
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{
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get; set;
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}
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public ZWrite ZWrite
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{
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get; set;
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}
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public Cull Cull
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{
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get; set;
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}
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public Blend Blend
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{
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get; set;
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}
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public ColorWriteMask ColorMask
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{
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get; set;
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}
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public static PipelineState Default => new PipelineState
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{
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ZTest = ZTest.LessEqual,
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ZWrite = ZWrite.On,
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Cull = Cull.Back,
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Blend = Blend.Opaque,
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ColorMask = ColorWriteMask.All
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};
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public readonly ulong GetHashCode64()
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{
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// 32-bit packed key for states controlled by material / overrides.
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// layout:
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// 0..3 Blend (4 bits)
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// 4..6 Cull (3 bits)
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// 7..10 DeafaultState (4 bits)
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// 11 ZWrite (1 bit)
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// 12..15 ColorMask (4 bits)
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var key = 0u;
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key |= ((uint)Blend & 0xFu) << 0;
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key |= ((uint)Cull & 0x7u) << 4;
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key |= ((uint)ZTest & 0xFu) << 7;
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key |= ((uint)ZWrite & 0x1u) << 11;
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key |= ((uint)ColorMask & 0xFu) << 12;
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return key;
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}
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public override readonly int GetHashCode()
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{
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var code64 = GetHashCode64();
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return ((int)code64) ^ (int)(code64 >> 32);
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}
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} |