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[unity] SpriteAttacher better PMA behavior.

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John 2016-09-05 13:34:08 +08:00 committed by GitHub
parent 65d0014827
commit f539742300
1 changed files with 74 additions and 52 deletions
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126
spine-unity/Assets/spine-unity/Modules/SpriteAttacher.cs
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@ -35,16 +35,21 @@ using Spine;
namespace Spine.Unity.Modules {
public class SpriteAttacher : MonoBehaviour {
const string DefaultPMAShader = "Spine/Skeleton";
const string DefaultStraightAlphaShader = "Sprites/Default";
#region Inspector
public bool attachOnStart = true;
public bool keepLoaderInMemory = true;
public Sprite sprite;
[SpineSlot]
public string slot;
#endregion
private SpriteAttachmentLoader loader;
private RegionAttachment attachment;
private bool applyPMA;
void Start () {
if (attachOnStart)
@ -53,10 +58,11 @@ namespace Spine.Unity.Modules {
public void Attach () {
var skeletonRenderer = GetComponent<SkeletonRenderer>();
this.applyPMA = skeletonRenderer.pmaVertexColors;
if (loader == null)
//create loader instance, tell it what sprite and shader to use
loader = new SpriteAttachmentLoader(sprite, Shader.Find("Spine/Skeleton"));
Shader attachmentShader = applyPMA ? Shader.Find(DefaultPMAShader) : Shader.Find(DefaultStraightAlphaShader);
loader = loader ?? new SpriteAttachmentLoader(sprite, attachmentShader, applyPMA);
if (attachment == null)
attachment = loader.NewRegionAttachment(null, sprite.name, "");
@ -69,20 +75,16 @@ namespace Spine.Unity.Modules {
}
public class SpriteAttachmentLoader : AttachmentLoader {
//IMPORTANT: Make sure you clear this when you don't need it anymore. Goodluck.
static public Dictionary<int, AtlasRegion> atlasTable = new Dictionary<int, AtlasRegion>();
//MITCH: left a todo: Memory cleanup functions
//IMPORTANT: Make sure you clear this when you don't need it anymore. Goodluck.
public static Dictionary<int, AtlasRegion> atlasTable = new Dictionary<int, AtlasRegion>();
//Shouldn't need to clear this, should just prevent redoing premultiply alpha pass on packed atlases
public static List<int> premultipliedAtlasIds = new List<int>();
static public List<int> premultipliedAtlasIds = new List<int>();
Sprite sprite;
Shader shader;
//bool applyPMA;
public SpriteAttachmentLoader (Sprite sprite, Shader shader) {
public SpriteAttachmentLoader (Sprite sprite, Shader shader, bool applyPMA) {
if (sprite.packed && sprite.packingMode == SpritePackingMode.Tight) {
Debug.LogError("Tight Packer Policy not supported yet!");
return;
@ -90,32 +92,43 @@ namespace Spine.Unity.Modules {
this.sprite = sprite;
this.shader = shader;
//this.applyPMA = applyPMA;
Texture2D tex = sprite.texture;
//premultiply texture if it hasn't been yet
int instanceId = tex.GetInstanceID();
if (!premultipliedAtlasIds.Contains(instanceId)) {
if (applyPMA) {
try {
var colors = tex.GetPixels();
Color c;
float a;
for (int i = 0; i < colors.Length; i++) {
c = colors[i];
a = c.a;
c.r *= a;
c.g *= a;
c.b *= a;
colors[i] = c;
Texture2D texture = sprite.texture;
int instanceId = texture.GetInstanceID();
if (!premultipliedAtlasIds.Contains(instanceId)) {
var colors = texture.GetPixels();
Color c;
float a;
for (int i = 0; i < colors.Length; i++) {
c = colors[i];
a = c.a;
c.r *= a;
c.g *= a;
c.b *= a;
colors[i] = c;
}
texture.SetPixels(colors);
texture.Apply();
premultipliedAtlasIds.Add(instanceId);
}
tex.SetPixels(colors);
tex.Apply();
premultipliedAtlasIds.Add(instanceId);
} catch {
//texture is not readable! Can't pre-multiply it, you're on your own.
if (Application.isEditor)
Debug.LogWarning("Texture was not readable! Could not apply premultiply alpha. Rendering may be incorrect. Please check your texture import settings and make sure Read/Write is enabled.");
}
}
#if UNITY_EDITOR
else {
Texture2D texture = sprite.texture;
int instanceId = texture.GetInstanceID();
if (premultipliedAtlasIds.Contains(instanceId))
Debug.LogWarning("The same texture was used by both premultiply and straight alpha shaders. Rendering may be incorrect.");
}
#endif
}
public RegionAttachment NewRegionAttachment (Skin skin, string name, string path) {
@ -124,11 +137,9 @@ namespace Spine.Unity.Modules {
Texture2D tex = sprite.texture;
int instanceId = tex.GetInstanceID();
AtlasRegion atlasRegion;
bool cachedMaterialExists = atlasTable.TryGetValue(instanceId, out atlasRegion);
// Check cache first
if (atlasTable.ContainsKey(instanceId)) {
atlasRegion = atlasTable[instanceId];
} else {
if (!cachedMaterialExists) {
// Setup new material.
var material = new Material(shader);
if (sprite.packed)
@ -139,7 +150,7 @@ namespace Spine.Unity.Modules {
// Create faux-region to play nice with SkeletonRenderer.
atlasRegion = new AtlasRegion();
AtlasPage page = new AtlasPage();
var page = new AtlasPage();
page.rendererObject = material;
atlasRegion.page = page;
@ -149,16 +160,17 @@ namespace Spine.Unity.Modules {
Rect texRect = sprite.textureRect;
//normalize rect to UV space of packed atlas
// Normalize rect to UV space of packed atlas
texRect.x = Mathf.InverseLerp(0, tex.width, texRect.x);
texRect.y = Mathf.InverseLerp(0, tex.height, texRect.y);
texRect.width = Mathf.InverseLerp(0, tex.width, texRect.width);
texRect.height = Mathf.InverseLerp(0, tex.height, texRect.height);
Bounds bounds = sprite.bounds;
Vector3 size = bounds.size;
Vector2 boundsMin = bounds.min, boundsMax = bounds.max;
Vector2 size = bounds.size;
float spriteUnitsPerPixel = 1f / sprite.pixelsPerUnit;
//MITCH: left todo: make sure this rotation thing actually works
bool rotated = false;
if (sprite.packed)
rotated = sprite.packingRotation == SpritePackingRotation.Any;
@ -168,8 +180,8 @@ namespace Spine.Unity.Modules {
attachment.SetColor(Color.white);
attachment.ScaleX = 1;
attachment.ScaleY = 1;
attachment.RegionOffsetX = sprite.rect.width * (0.5f - InverseLerp(bounds.min.x, bounds.max.x, 0)) / sprite.pixelsPerUnit;
attachment.RegionOffsetY = sprite.rect.height * (0.5f - InverseLerp(bounds.min.y, bounds.max.y, 0)) / sprite.pixelsPerUnit;
attachment.RegionOffsetX = sprite.rect.width * (0.5f - InverseLerp(boundsMin.x, boundsMax.x, 0)) * spriteUnitsPerPixel;
attachment.RegionOffsetY = sprite.rect.height * (0.5f - InverseLerp(boundsMin.y, boundsMax.y, 0)) * spriteUnitsPerPixel;
attachment.Width = size.x;
attachment.Height = size.y;
attachment.RegionWidth = size.x;
@ -182,7 +194,6 @@ namespace Spine.Unity.Modules {
}
public MeshAttachment NewMeshAttachment (Skin skin, string name, string path) {
//MITCH : Left todo: Unity 5 only
return null;
}
@ -194,21 +205,32 @@ namespace Spine.Unity.Modules {
return null;
}
private float InverseLerp(float a, float b, float value)
{
static float InverseLerp (float a, float b, float value) {
return (value - a) / (b - a);
}
}
public static class SpriteAttachmentExtensions {
public static Attachment AttachUnitySprite (this Skeleton skeleton, string slotName, Sprite sprite, string shaderName = "Spine/Skeleton") {
var att = sprite.ToRegionAttachment(shaderName);
public static Attachment AttachUnitySprite (this Skeleton skeleton, string slotName, Sprite sprite, string shaderName = "Spine/Skeleton", bool applyPMA = true) {
return skeleton.AttachUnitySprite(slotName, sprite, Shader.Find(shaderName), applyPMA);
}
public static Attachment AddUnitySprite (this SkeletonData skeletonData, string slotName, Sprite sprite, string skinName = "", string shaderName = "Spine/Skeleton", bool applyPMA = true) {
return skeletonData.AddUnitySprite(slotName, sprite, skinName, Shader.Find(shaderName), applyPMA);
}
public static RegionAttachment ToRegionAttachment (this Sprite sprite, string shaderName = "Spine/Skeleton", bool applyPMA = true) {
return sprite.ToRegionAttachment(Shader.Find(shaderName), applyPMA);
}
public static Attachment AttachUnitySprite (this Skeleton skeleton, string slotName, Sprite sprite, Shader shader, bool applyPMA) {
var att = sprite.ToRegionAttachment(shader, applyPMA);
skeleton.FindSlot(slotName).Attachment = att;
return att;
}
public static Attachment AddUnitySprite (this SkeletonData skeletonData, string slotName, Sprite sprite, string skinName = "", string shaderName = "Spine/Skeleton") {
var att = sprite.ToRegionAttachment(shaderName);
public static Attachment AddUnitySprite (this SkeletonData skeletonData, string slotName, Sprite sprite, string skinName, Shader shader, bool applyPMA) {
var att = sprite.ToRegionAttachment(shader, applyPMA);
var slotIndex = skeletonData.FindSlotIndex(slotName);
Skin skin = skeletonData.defaultSkin;
@ -220,8 +242,8 @@ namespace Spine.Unity.Modules {
return att;
}
public static RegionAttachment ToRegionAttachment (this Sprite sprite, string shaderName = "Spine/Skeleton") {
var loader = new SpriteAttachmentLoader(sprite, Shader.Find(shaderName));
public static RegionAttachment ToRegionAttachment (this Sprite sprite, Shader shader, bool applyPMA) {
var loader = new SpriteAttachmentLoader(sprite, shader, applyPMA);
var att = loader.NewRegionAttachment(null, sprite.name, "");
loader = null;
return att;