private void OnEnable()
{
Reset();
if (Selection.activeObject != null && (Selection.activeObject is Texture || Selection.activeObject is Sprite))
{
Sprite sp = Selection.activeObject as Sprite;
if (sp != null)
{
m_sourceTexture = sp.texture;
}
else
{
m_sourceTexture = Selection.activeObject as Texture;
}
}
m_bgTexture = RenderTexture.GetTemporary(256, 256, 0, RenderTextureFormat.ARGB32);
m_mat = new Material(Shader.Find("ASTC/ColorMask"));
for (EChanelMask i = 0; i < EChanelMask.Max; ++i)
{
channel_button_texts[(int)i] = i.ToString();
}
if (m_sourceTexture == null)
{
return;
}
m_encodeType = m_willEncodeType = EASTCENCODE.None;
m_quality = m_willQuality = ECompressQuality.QUALITY_MEDIUM;
InitCaculateTextureShow();
}
private void Reset()
{
m_scale = 1;
m_sourceTexture = null;
m_previewTexture = null;
m_willEncodeType = EASTCENCODE.None;
}
private bool TryRefreshEncode(EASTCENCODE t, out Texture image)
{
image = null;
if (m_sourceTexture == null || !m_previewDirty)
{
return(false);
}
int sw_alpha = 4;
bool need_pack = false;
switch (t)
{
case EASTCENCODE.None:
//show the source
need_pack = false;
break;
case EASTCENCODE.E4x4:
case EASTCENCODE.E5x5:
case EASTCENCODE.E6x6:
case EASTCENCODE.E8x8:
case EASTCENCODE.E10x10:
case EASTCENCODE.E12x12:
need_pack = true;
break;
default:
EditorUtility.DisplayDialog("提示", "暂不支持该格式", "确定");
break;
}
if (need_pack)
{
string file_path = GetSourceTextureFullPath();
var ptr = ASTCWrap.pack_and_unpack_image(file_path, (int)t, 0, sw_alpha, 0);
image = DecodeImageData(ptr);
}
return(need_pack);
}
private void OnGUI()
{
bool need_repaint = false;
if (m_sourceTexture == null)
{
m_sourceTexture = EditorGUILayout.ObjectField("放置预览texture", m_sourceTexture, typeof(Texture), false) as Texture;
if (m_sourceTexture != null)
{
InitCaculateTextureShow();
}
}
else
{
if (Event.current.type == EventType.Repaint)
{
EditorGUI.DrawTextureTransparent(new Rect(0, 0, this.position.width, this.position.height), m_bgTexture);
}
GUILayout.BeginHorizontal(EditorStyles.toolbar, GUILayout.Width(this.position.width));
{
if (GUILayout.Button("Reset", EditorStyles.toolbarButton, GUILayout.Width(50)))
{
Reset();
Repaint();
return;
}
m_mask = (EChanelMask)GUILayout.SelectionGrid((int)m_mask, channel_button_texts, channel_button_texts.Length, EditorStyles.toolbarButton, GUILayout.Width(180));
m_willEncodeType = (EASTCENCODE)EditorGUILayout.EnumPopup(m_willEncodeType, EditorStyles.toolbarPopup, GUILayout.Width(80));
if (m_willEncodeType != EASTCENCODE.None)
{
m_willQuality = (ECompressQuality)EditorGUILayout.EnumPopup(m_willQuality, EditorStyles.toolbarPopup, GUILayout.Width(80));
}
if (GUILayout.Button("PreView", EditorStyles.toolbarButton, GUILayout.Width(100)))
{
Texture image;
if (TryRefreshEncode(m_willEncodeType, out image))
{
m_encodeType = m_willEncodeType;
m_quality = m_willQuality;
//show the astc
m_previewTexture = image;
}
}
} GUILayout.EndHorizontal();
if (Event.current.type == EventType.MouseDrag)
{
m_scrollVec.x = m_scrollVec.x - Event.current.delta.x;
m_scrollVec.y = m_scrollVec.y - Event.current.delta.y;
need_repaint = true;
}
else if (Event.current.type == EventType.ScrollWheel)
{
m_scale += Event.current.delta.y * 0.01f;
need_repaint = true;
}
Color col = new Color();
m_mat.SetInt("_AlphaToggle", 1);
switch (m_mask)
{
case EChanelMask.R:
col.r = 1;
col.g = 0;
col.b = 0;
col.a = 1;
break;
case EChanelMask.G:
col.r = 0;
col.g = 1;
col.b = 0;
col.a = 1;
break;
case EChanelMask.B:
col.r = 0;
col.g = 0;
col.b = 1;
col.a = 1;
break;
case EChanelMask.RGB:
col.r = 1;
col.g = 1;
col.b = 1;
col.a = 1;
m_mat.SetInt("_AlphaToggle", 0);
break;
case EChanelMask.SO:
col.r = 1;
col.g = 1;
col.b = 1;
col.a = 1;
break;
default:
col.r = col.r = col.b = col.a = 1;
break;
}
m_mat.SetColor("_Color", col);
//自定义材质，需手动开启裁剪
m_mat.EnableKeyword("UNITY_UI_CLIP_RECT");
m_mat.SetVector("_ClipRect", new Vector4(0, 0, this.position.width, this.position.height));
float content_width = m_previewTexture.width * m_scale;
float content_height = m_previewTexture.height * m_scale;
float x = -m_scrollVec.x;
float y = 25 - m_scrollVec.y;
m_textureRect = new Rect(x, y, content_width, content_height);
GUI.BeginClip(new Rect(0, 16, this.position.width, this.position.height));
EditorGUI.DrawPreviewTexture(m_textureRect, m_previewTexture, m_mat, ScaleMode.StretchToFill, 0, 0);
EditorGUI.DrawTextureAlpha(new Rect(m_textureRect.x, m_textureRect.y + m_textureRect.height + 10, m_textureRect.width, m_textureRect.height), m_previewTexture, ScaleMode.StretchToFill, 0, 0);
GUI.EndClip();
float right = Math.Max(content_width + 30, this.position.width);
float left = -30;
m_scrollVec.x = GUI.HorizontalScrollbar(new Rect(0, this.position.height - 16, this.position.width - 16, 16), m_scrollVec.x, this.position.width, left, right);
right = Math.Max(content_height * 2 + 70, this.position.height);
left = -30;
m_scrollVec.y = GUI.VerticalScrollbar(new Rect(this.position.width - 16, 0, 16, this.position.height), m_scrollVec.y, this.position.height, left, right);
}
if (need_repaint)
{
Repaint();
}
}
