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227 行
6.7 KiB

using System;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.ui;
using UnityEngine;
using Canvas = Unity.UIWidgets.ui.Canvas;
using Rect = UnityEngine.Rect;
namespace Unity.UIWidgets.editor {
public delegate bool SubmitCallback(SurfaceFrame surfaceFrame, Canvas canvas);
public class SurfaceFrame : IDisposable {
bool _submitted;
readonly GrSurface _surface;
readonly SubmitCallback _submitCallback;
public SurfaceFrame(GrSurface surface, SubmitCallback submitCallback) {
this._surface = surface;
this._submitCallback = submitCallback;
}
public void Dispose() {
if (this._submitCallback != null && !this._submitted) {
this._submitCallback(this, null);
}
}
public Canvas getCanvas() {
return this._surface != null ? this._surface.getCanvas() : null;
}
public bool submit() {
if (this._submitted) {
return false;
}
this._submitted = this._performSubmit();
return this._submitted;
}
bool _performSubmit() {
if (this._submitCallback == null) {
return false;
}
if (this._submitCallback(this, this.getCanvas())) {
return true;
}
return false;
}
}
public interface Surface : IDisposable {
SurfaceFrame acquireFrame(Size size, double devicePixelRatio);
MeshPool getMeshPool();
}
public class EditorWindowSurface : Surface {
static Material _guiTextureMat;
static Material _uiDefaultMat;
public delegate void DrawToTargetFunc(Rect screenRect, Texture texture, Material mat);
internal static Material _getGUITextureMat() {
if (_guiTextureMat) {
return _guiTextureMat;
}
var guiTextureShader = Shader.Find("UIWidgets/GUITexture");
if (guiTextureShader == null) {
throw new Exception("UIWidgets/GUITexture not found");
}
_guiTextureMat = new Material(guiTextureShader);
_guiTextureMat.hideFlags = HideFlags.HideAndDontSave;
return _guiTextureMat;
}
internal static Material _getUIDefaultMat() {
if (_uiDefaultMat) {
return _uiDefaultMat;
}
var uiDefaultShader = Shader.Find("UIWidgets/UIDefault");
if (uiDefaultShader == null) {
throw new Exception("UIWidgets/UIDefault not found");
}
_uiDefaultMat = new Material(uiDefaultShader);
_uiDefaultMat.hideFlags = HideFlags.HideAndDontSave;
return _uiDefaultMat;
}
GrSurface _surface;
readonly DrawToTargetFunc _drawToTargetFunc;
MeshPool _meshPool = new MeshPool();
public EditorWindowSurface(DrawToTargetFunc drawToTargetFunc = null) {
this._drawToTargetFunc = drawToTargetFunc;
}
public SurfaceFrame acquireFrame(Size size, double devicePixelRatio) {
this._createOrUpdateRenderTexture(size, devicePixelRatio);
return new SurfaceFrame(this._surface,
(frame, canvas) => this._presentSurface(canvas));
}
public MeshPool getMeshPool() {
return this._meshPool;
}
public void Dispose() {
if (this._surface != null) {
this._surface.Dispose();
this._surface = null;
}
if (this._meshPool != null) {
this._meshPool.Dispose();
this._meshPool = null;
}
}
protected bool _presentSurface(Canvas canvas) {
if (canvas == null) {
return false;
}
this._surface.getCanvas().flush();
this._surface.getCanvas().reset();
var screenRect = new Rect(0, 0,
(float) (this._surface.size.width / this._surface.devicePixelRatio),
(float) (this._surface.size.height / this._surface.devicePixelRatio));
if (this._drawToTargetFunc == null) {
Graphics.DrawTexture(screenRect, this._surface.getRenderTexture(),
_getGUITextureMat());
}
else {
this._drawToTargetFunc(screenRect, this._surface.getRenderTexture(),
_getUIDefaultMat());
}
return true;
}
void _createOrUpdateRenderTexture(Size size, double devicePixelRatio) {
if (this._surface != null
&& this._surface.size == size
&& this._surface.devicePixelRatio == devicePixelRatio
&& this._surface.getRenderTexture() != null) {
return;
}
if (this._surface != null) {
this._surface.Dispose();
this._surface = null;
}
this._surface = new GrSurface(size, devicePixelRatio, this._meshPool);
}
}
public class GrSurface : IDisposable {
public readonly Size size;
public readonly double devicePixelRatio;
readonly MeshPool _meshPool;
RenderTexture _renderTexture;
CommandBufferCanvas _canvas;
public RenderTexture getRenderTexture() {
return this._renderTexture;
}
public Canvas getCanvas() {
if (this._canvas == null) {
this._canvas = new CommandBufferCanvas(
this._renderTexture, (float) this.devicePixelRatio, this._meshPool);
}
return this._canvas;
}
public GrSurface(Size size, double devicePixelRatio, MeshPool meshPool) {
this.size = size;
this.devicePixelRatio = devicePixelRatio;
var desc = new RenderTextureDescriptor(
(int) this.size.width, (int) this.size.height,
RenderTextureFormat.Default, 24) {
useMipMap = false,
autoGenerateMips = false,
};
if (QualitySettings.antiAliasing != 0) {
desc.msaaSamples = QualitySettings.antiAliasing;
}
this._renderTexture = new RenderTexture(desc);
this._renderTexture.hideFlags = HideFlags.HideAndDontSave;
this._meshPool = meshPool;
}
public void Dispose() {
if (this._renderTexture) {
this._renderTexture = ObjectUtils.SafeDestroy(this._renderTexture);
}
if (this._canvas != null) {
this._canvas.reset();
this._canvas = null;
}
}
}
}