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101 changes: 101 additions & 0 deletions
101
fabric/src/main/java/com/noxcrew/noxesium/feature/ui/render/api/BlendState.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package com.noxcrew.noxesium.feature.ui.render.api; | ||
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| import com.mojang.blaze3d.platform.GlStateManager; | ||
| import org.lwjgl.opengl.GL11; | ||
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| /** | ||
| * Holds a snapshot of the current blending state. | ||
| */ | ||
| public class BlendState { | ||
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| /** | ||
| * Returns the initial blend state before UI rendering starts in vanilla. | ||
| */ | ||
| public static BlendState initial() { | ||
| var state = new BlendState(); | ||
| state.blend = false; | ||
| state.srcRgb = GL11.GL_SRC_ALPHA; | ||
| state.dstRgb = GL11.GL_ONE_MINUS_SRC_ALPHA; | ||
| state.srcAlpha = GL11.GL_ONE; | ||
| state.dstAlpha = GL11.GL_ZERO; | ||
| return state; | ||
| } | ||
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| /** | ||
| * Returns the standard blend state when rendering UI elements. | ||
| */ | ||
| public static BlendState standard() { | ||
| var state = new BlendState(); | ||
| state.blend = true; | ||
| state.srcRgb = GL11.GL_SRC_ALPHA; | ||
| state.dstRgb = GL11.GL_ONE_MINUS_SRC_ALPHA; | ||
| state.srcAlpha = GL11.GL_ONE; | ||
| state.dstAlpha = GL11.GL_ONE_MINUS_SRC_ALPHA; | ||
| return state; | ||
| } | ||
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| /** | ||
| * Takes a snapshot of the current blend state | ||
| * intended by vanilla. | ||
| */ | ||
| public static BlendState snapshot() { | ||
| var state = new BlendState(); | ||
| state.blend = GlStateManager.BLEND.mode.enabled; | ||
| state.srcRgb = GlStateManager.BLEND.srcRgb; | ||
| state.dstRgb = GlStateManager.BLEND.dstRgb; | ||
| state.srcAlpha = GlStateManager.BLEND.srcAlpha; | ||
| state.dstAlpha = GlStateManager.BLEND.dstAlpha; | ||
| return state; | ||
| } | ||
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| private boolean blend; | ||
| private int srcRgb, dstRgb, srcAlpha, dstAlpha; | ||
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| /** | ||
| * Applies this blend state. | ||
| */ | ||
| public void apply() { | ||
| if (blend) { | ||
| GlStateManager._enableBlend(); | ||
| } else { | ||
| GlStateManager._disableBlend(); | ||
| } | ||
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| GlStateManager._blendFuncSeparate(srcRgb, dstRgb, srcAlpha, dstAlpha); | ||
| } | ||
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| /** | ||
| * Returns whether blending is enabled. | ||
| */ | ||
| public boolean enabled() { | ||
| return blend; | ||
| } | ||
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| /** | ||
| * Returns the srcRgb value. | ||
| */ | ||
| public int srcRgb() { | ||
| return srcRgb; | ||
| } | ||
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| /** | ||
| * Returns the dstRgb value. | ||
| */ | ||
| public int dstRgb() { | ||
| return dstRgb; | ||
| } | ||
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| /** | ||
| * Returns the srcAlpha value. | ||
| */ | ||
| public int srcAlpha() { | ||
| return srcAlpha; | ||
| } | ||
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| /** | ||
| * Returns the dstAlpha value. | ||
| */ | ||
| public int dstAlpha() { | ||
| return dstAlpha; | ||
| } | ||
| } |
21 changes: 21 additions & 0 deletions
21
fabric/src/main/java/com/noxcrew/noxesium/feature/ui/render/api/BlendStateHook.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| package com.noxcrew.noxesium.feature.ui.render.api; | ||
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| /** | ||
| * A hook that receives any changes to the blending state. | ||
| */ | ||
| public interface BlendStateHook { | ||
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| /** | ||
| * Called when the blending state is attempted to | ||
| * be changed to [newValue]. If `true` is returned | ||
| * the call is prevented. | ||
| */ | ||
| boolean changeState(boolean newValue); | ||
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| /** | ||
| * Called when the blending function is attempted to | ||
| * be changed to the new values. If `true` is returned | ||
| * the call is prevented. | ||
| */ | ||
| boolean changeFunc(int srcRgb, int dstRgb, int srcAlpha, int dstAlpha); | ||
| } |
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