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I am trying to sample a texture inside a Metal vertex shader. Receiving the following error: "AGX: AGX: Texture read/write assertion failed: depth > 0" Setup for rendering: ` MTLSamplerDescriptor *samplerDesc = [MTLSamplerDescriptor new]; samplerDesc.normalizedCoordinates = YES; samplerDesc.rAddressMode = MTLSamplerAddressModeClampToEdge; samplerDesc.sAddressMode = MTLSamplerAddressModeClampToEdge; samplerDesc.tAddressMode = MTLSamplerAddressModeClampToEdge; samplerDesc.minFilter = MTLSamplerMinMagFilterNearest; samplerDesc.magFilter = MTLSamplerMinMagFilterNearest; samplerDesc.mipFilter = MTLSamplerMipFilterNotMipmapped; id ss = [device newSamplerStateWithDescriptor:samplerDesc]; [ commandEncoder setVertexSamplerState : ss atIndex : 0 ]; [ commandEncoder setVertexTexture : l_Texture_Height_Field atIndex : CTI_Gradient ]; Vertex` Shader: `vertex PVertex vertexShader_mkali ( uint vertexID [ [ vertex_id ] ], constant Vertex3D *vertexArray [ [ buffer ( CVI_Vertices ) ] ], constant vector_uint2 *viewportSizePointer [ [ buffer ( CVI_ViewportSize ) ] ], constant shader_Data_mkali &vertex_Shader_Data [ [ buffer ( CVI_ShaderData ) ] ], texture2d < float > heightTexture [ [ texture ( CTI_Gradient ) ] ], sampler smp [ [ sampler ( 0 ) ] ] ) { PVertex outVertex; float2 l_Point = vertexArray [ vertexID ].position.xy; l_Point.x = mkali_noxstep( -1.0, 1.0, l_Point.x ); l_Point.y = mkali_noxstep( -1.0, 1.0, l_Point.y ); float4 l_Texture_Heightfield = heightTexture.sample ( smp, l_Point ); outVertex.position = float4 ( vertexArray [ vertexID ].position + float3 ( l_Texture_Heightfield.x, 0.0, 0.0 ), 1.0 ); outVertex.color = float4 ( 1.0, 0.5, 0.0, 1.0 ); outVertex.size = 30; return outVertex; }` Anybody have any ideas? thank you, Nikki

Why do Motion keyframed values do not call parameterChanged even thought the value changed? The work around was painful. Please let me know if it can be done with parameterChanged. thank you, David Patrick Farmer

How do I get the 3D transform of a layer from an Image Well parameter? matrix_float4x4 l_Transform_Mask_Texture; FxMatrix44 *l_Pixel_Transform_Temporary     = sourceImages [ ki_Mask ].pixelTransform; Matrix44Data *l_Pixel_Transform             = [ l_Pixel_Transform_Temporary  matrix ]; Always returns identity matrix. If I retrieve the pixelTransform on the destinationImage I get something but it must be relating to the tile and that layer's transform. Could use some help here. thank you, David Patrick Farmer

FxPlug 4 How do I force a render in the active project? Thank you, David Patrick Farmer

I am trying to retrieve the layer transform of a layer put into a generator’s image well parameter.I setup like this: [ l_FxParameterCreationAPI_v5 addImageReferenceWithName : [l_Bundle localizedStringForKey: @"Source" value:NULL table:NULL] parameterID : k_Parameter_ID_Source_Texture parameterFlags : kFxParameterFlag_DEFAULT ];- ( BOOL ) properties : ( NSDictionary * _Nonnull * ) properties error : ( NSError * _Nullable * ) error{ *properties = @{ kFxPropertyKey_MayRemapTime : @NO, kFxPropertyKey_IsThreadSafe : @NO, kFxPropertyKey_UsesRationalTime : @YES, kFxPropertyKey_PixelTransformSupport : [ NSNumber numberWithInt : kFxPixelTransform_ScaleTranslate ], // kFxPixelTransform_Full ], kFxPropertyKey_VariesWhenParamsAreStatic : @YES, kFxPropertyKey_NeedsFullBuffer : @YES, kFxPropertyKey_ChangesOutputSize : @YES }; return YES;}- ( BOOL ) destinationImageRect : ( FxRect * ) m_Destination_Image_Rectangle sourceImages : ( NSArray &lt; FxImageTile * &gt; * ) m_Source_Images destinationImage : ( FxImageTile * ) m_Destination_Image pluginState : ( NSData * ) m_Plugin_State atTime : ( CMTime ) m_Render_Time error : ( NSError * _Nullable * ) m_Out_Error{ Matrix44Data* pt = [ m_Source_Images [ 0 ].pixelTransform matrix ]; NSLog( @"NECTAR . PT . 0x:%f 0y:%f 0z:%f 0w:%f", (*pt)[0][0], (*pt)[0][1], (*pt)[0][2], (*pt)[0][3] ); // ••• NSLog( @"NECTAR . PT . 1x:%f 1y:%f 1z:%f 1w:%f", (*pt)[1][0], (*pt)[1][1], (*pt)[1][2], (*pt)[1][3] ); // ••• NSLog( @"NECTAR . PT . 2x:%f 2y:%f 2z:%f 2w:%f", (*pt)[2][0], (*pt)[2][1], (*pt)[2][2], (*pt)[2][3] ); // ••• NSLog( @"NECTAR . PT . 3x:%f 3y:%f 3z:%f 3w:%f", (*pt)[3][0], (*pt)[3][1], (*pt)[3][2], (*pt)[3][3] ); // ••• return YES;}Result:PT . 0x:1.000000 0y:0.000000 0z:0.000000 0w:0.000000PT . 1x:0.000000 1y:1.000000 1z:0.000000 1w:0.000000PT . 2x:0.000000 2y:0.000000 2z:1.000000 2w:0.000000PT . 3x:0.000000 3y:0.000000 3z:0.000000 3w:1.000000 The source layer is rotated 90° so the following identity matrix does make sense? How do I retrieve the transform matrix of the source layer correctly?I tried in the render method as well with the same results.Thank you,David

I want to know if I am rendering to final view ( not a tumbnail ) or to export render. How would I know it the pluginState or setting the destinationRect methods?thank you,David

FxPlug 4 - How do I retrieve project dimensions when setting output size in a Filter?I want to set my filter output size to the size of the project ( possibly bigger ).If not, is there a way of retrieving child groups or layers of the current filter or generator?Thanks,David