public bool IsEnabledFor(PlaytimePainter painter, ImageMeta id, BrushConfig cfg) => painter.IsAtlased() && !id.TargetIsRenderTexture();
public void SHADER_BRUSH_UPDATE(BrushConfig brush = null, float brushAlpha = 1, ImageMeta id = null, PlaytimePainter painter = null)
{
if (brush == null)
{
brush = GlobalBrush;
}
if (!painter)
{
painter = PlaytimePainter.selectedInPlaytime;
}
if (id == null && painter)
{
id = painter.ImgMeta;
}
brush.previewDirty = false;
if (id == null)
{
return;
}
float textureWidth = id.width;
var rendTex = id.TargetIsRenderTexture();
var brushType = brush.GetBrushType(!rendTex);
var blitMode = brush.GetBlitMode(!rendTex);
var is3DBrush = brush.IsA3DBrush(painter);
//var isDecal = rendTex && brushType.IsUsingDecals;
var useAlphaBuffer = (brush.useAlphaBuffer && blitMode.SupportsAlphaBufferPainting && rendTex);
BrushColorProperty.GlobalValue = brush.Color;
BrushMaskProperty.GlobalValue = new Vector4(
BrushExtensions.HasFlag(brush.mask, BrushMask.R) ? 1 : 0,
BrushExtensions.HasFlag(brush.mask, BrushMask.G) ? 1 : 0,
BrushExtensions.HasFlag(brush.mask, BrushMask.B) ? 1 : 0,
BrushExtensions.HasFlag(brush.mask, BrushMask.A) ? 1 : 0);
float useTransparentLayerBackground = 0;
if (id.isATransparentLayer)
{
var md = painter.MatDta;
if (md != null && md.usePreviewShader && md.material)
{
var mt = md.material.mainTexture;
TransparentLayerUnderProperty.GlobalValue = mt;
useTransparentLayerBackground = (mt && (id != mt.GetImgDataIfExists())) ? 1 : 0;
}
}
brushType.OnShaderBrushUpdate(brush);
//if (isDecal)
// SHADER_DECAL_UPDATE(brush);
if (rendTex)
{
SourceMaskProperty.GlobalValue = brush.useMask ? Data.masks.TryGet(brush.selectedSourceMask) : null;
}
MaskDynamicsProperty.GlobalValue = new Vector4(
brush.maskTiling,
rendTex ? brush.hardness * brush.hardness : 0, // y - Hardness is 0 to do correct preview for Texture2D brush
((brush.flipMaskAlpha || brush.useMask) ? 0 : 1),
(brush.maskFromGreyscale && brush.useMask) ? 1 : 0);
MaskOffsetProperty.GlobalValue = brush.maskOffset.ToVector4();
BrushFormProperty.GlobalValue = new Vector4(
brushAlpha, // x - transparency
brush.Size(is3DBrush), // y - scale for sphere
brush.Size(is3DBrush) / textureWidth, // z - scale for uv space
brush.blurAmount); // w - blur amount
AlphaBufferConfigProperty.GlobalValue = new Vector4(
brush.alphaLimitForAlphaBuffer,
brush.worldSpaceBrushPixelJitter ? 1 : 0,
useAlphaBuffer ? 1 : 0,
0);
AlphaPaintingBuffer.GlobalValue = AlphaBuffer;
brushType.SetKeyword(id.useTexCoord2);
UnityUtils.SetShaderKeyword(PainterDataAndConfig.BRUSH_TEXCOORD_2, id.useTexCoord2);
if (blitMode.SupportsTransparentLayer)
{
UnityUtils.SetShaderKeyword(PainterDataAndConfig.TARGET_TRANSPARENT_LAYER, id.isATransparentLayer);
}
blitMode.SetKeyword(id).SetGlobalShaderParameters();
if (rendTex && blitMode.UsingSourceTexture)
{
SourceTextureProperty.GlobalValue = Data.sourceTextures.TryGet(brush.selectedSourceTexture);
TextureSourceParameters.GlobalValue = new Vector4(
(float)brush.srcColorUsage,
brush.clampSourceTexture ? 1f : 0f,
useTransparentLayerBackground,
brush.ignoreSrcTextureTransparency ? 1f : 0f
);
}
}
