Rev 787 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 787 | chris | 1 | using System; |
| 2 | using System.Collections.Generic; |
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| 3 | using System.Linq; |
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| 4 | using System.Text; |
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| 5 | using System.Threading.Tasks; |
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| 6 | |||
| 7 | using Tao.OpenGl; |
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| 1451 | chris | 8 | #pragma warning disable 0618 |
| 787 | chris | 9 | |
| 10 | namespace BauzoidNET.graphics.renderstates |
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| 11 | { |
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| 12 | public class BlendingStates : RenderStatesObject |
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| 13 | { |
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| 14 | public enum BlendingMode |
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| 15 | { |
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| 16 | ADD, |
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| 17 | ALPHABLEND, |
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| 18 | SUBTRACT, |
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| 19 | // MIN, // unsupported on OpenGL ES |
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| 20 | // MAX, // unsupported on OpenGL ES |
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| 21 | MULTIPLY |
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| 22 | }; |
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| 23 | |||
| 24 | private bool mEnabled = false; |
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| 25 | private BlendingMode mBlendingMode = BlendingMode.ALPHABLEND; |
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| 26 | private bool mCurrentlyEnabled = false; |
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| 27 | private BlendingMode mCurrentBlendingMode = BlendingMode.ALPHABLEND; |
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| 28 | private bool mDefaultEnabled = false; |
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| 29 | private BlendingMode mDefaultBlendingMode = BlendingMode.ALPHABLEND; |
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| 30 | |||
| 31 | /** Constructor. */ |
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| 32 | public BlendingStates(RenderStates renderStates) : base(renderStates) |
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| 33 | { |
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| 34 | } |
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| 35 | |||
| 36 | /** Activate the render state. Manages multiple same-state changes. */ |
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| 37 | public override void activate(bool force) |
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| 38 | { |
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| 39 | if ((force) || (mBlendingMode != mCurrentBlendingMode)) |
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| 40 | { |
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| 41 | mCurrentBlendingMode = mBlendingMode; |
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| 42 | switch (mBlendingMode) |
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| 43 | { |
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| 44 | case BlendingMode.ADD: |
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| 45 | { |
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| 46 | Gl.glBlendFunc(Gl.GL_SRC_ALPHA, Gl.GL_ONE); |
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| 47 | break; |
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| 48 | } |
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| 49 | case BlendingMode.ALPHABLEND: |
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| 50 | { |
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| 51 | Gl.glBlendFunc(Gl.GL_SRC_ALPHA, Gl.GL_ONE_MINUS_SRC_ALPHA); |
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| 52 | break; |
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| 53 | } |
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| 54 | case BlendingMode.SUBTRACT: |
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| 55 | { |
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| 56 | Gl.glBlendFunc(Gl.GL_ZERO, Gl.GL_SRC_ALPHA); |
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| 57 | break; |
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| 58 | } |
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| 59 | case BlendingMode.MULTIPLY: |
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| 60 | { |
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| 61 | Gl.glBlendFunc(Gl.GL_ZERO, Gl.GL_SRC_COLOR); |
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| 62 | break; |
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| 63 | } |
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| 64 | } |
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| 65 | } |
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| 66 | |||
| 67 | if ((force) || (mEnabled != mCurrentlyEnabled)) |
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| 68 | { |
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| 69 | mCurrentlyEnabled = mEnabled; |
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| 70 | if (mEnabled) |
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| 71 | { |
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| 72 | Gl.glEnable(Gl.GL_BLEND); |
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| 73 | } |
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| 74 | else |
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| 75 | { |
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| 76 | Gl.glDisable(Gl.GL_BLEND); |
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| 77 | } |
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| 78 | } |
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| 79 | } |
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| 80 | |||
| 81 | /** Reset to default values. */ |
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| 82 | public override void reset() |
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| 83 | { |
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| 84 | if ((mLocked) || (mRenderStates.isLocked())) |
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| 85 | return; |
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| 86 | mEnabled = mDefaultEnabled; |
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| 87 | mBlendingMode = mDefaultBlendingMode; |
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| 88 | } |
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| 89 | |||
| 90 | /** Check if blending is enabled. */ |
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| 91 | public bool isEnabled() |
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| 92 | { |
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| 93 | return mEnabled; |
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| 94 | } |
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| 95 | |||
| 96 | /** Check if blending is enabled by default. */ |
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| 97 | public bool isDefaultEnabled() |
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| 98 | { |
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| 99 | return mEnabled; |
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| 100 | } |
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| 101 | |||
| 102 | /** Check blending mode. */ |
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| 103 | public BlendingMode getBlendingMode() |
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| 104 | { |
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| 105 | return mBlendingMode; |
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| 106 | } |
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| 107 | |||
| 108 | /** Check default blending mode. */ |
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| 109 | public BlendingMode getDefaultBlendingMode() |
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| 110 | { |
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| 111 | return mDefaultBlendingMode; |
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| 112 | } |
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| 113 | |||
| 114 | /** Set enabled state. */ |
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| 115 | public void setEnabled(bool value) |
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| 116 | { |
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| 117 | if ((mLocked) || (mRenderStates.isLocked())) |
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| 118 | return; |
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| 119 | |||
| 120 | mEnabled = value; |
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| 121 | } |
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| 122 | |||
| 123 | /** Set default enabled state. */ |
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| 124 | public void setDefaultEnabled(bool value) |
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| 125 | { |
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| 126 | if ((mLocked) || (mRenderStates.isLocked())) |
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| 127 | return; |
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| 128 | |||
| 129 | mDefaultEnabled = value; |
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| 130 | } |
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| 131 | |||
| 132 | /** Set blending mode. */ |
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| 133 | public void setBlendingMode(BlendingMode value) |
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| 134 | { |
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| 135 | if ((mLocked) || (mRenderStates.isLocked())) |
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| 136 | return; |
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| 137 | |||
| 138 | mBlendingMode = value; |
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| 139 | } |
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| 140 | |||
| 141 | /** Set default blending mode. */ |
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| 142 | public void setDefaultBlendingMode(BlendingMode value) |
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| 143 | { |
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| 144 | if ((mLocked) || (mRenderStates.isLocked())) |
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| 145 | return; |
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| 146 | |||
| 147 | mDefaultBlendingMode = value; |
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| 148 | } |
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| 149 | |||
| 150 | } |
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| 151 | } |