diff --git a/src/Pipeline/PixelProgram.cpp b/src/Pipeline/PixelProgram.cpp
index c64c7ae..45b5348 100644
--- a/src/Pipeline/PixelProgram.cpp
+++ b/src/Pipeline/PixelProgram.cpp
@@ -173,7 +173,7 @@
 				}
 				break;
 			default:
-				ASSERT(false);
+				UNIMPLEMENTED("VkFormat: %d", int(state.targetFormat[index]));
 			}
 		}
 	}
@@ -227,7 +227,7 @@
 			case VK_FORMAT_R8G8B8A8_UINT:
 				break;
 			default:
-				ASSERT(false);
+				UNIMPLEMENTED("VkFormat: %d", int(state.targetFormat[index]));
 			}
 		}
 	}
diff --git a/src/Pipeline/PixelRoutine.cpp b/src/Pipeline/PixelRoutine.cpp
index 7e841e0..57cbf4e 100644
--- a/src/Pipeline/PixelRoutine.cpp
+++ b/src/Pipeline/PixelRoutine.cpp
@@ -363,7 +363,7 @@
 			value ^= Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkCompareOp: %d", int(stencilCompareMode));
 		}
 	}
 
@@ -439,7 +439,7 @@
 			zTest = CmpLT(zValue, Z);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkCompareOp: %d", int(state.depthCompareMode));
 		}
 
 		switch(state.depthCompareMode)
@@ -539,7 +539,7 @@
 			zTest = Int4(CmpGT(Z, zValue));
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkCompareOp: %d", int(state.depthCompareMode));
 		}
 
 		switch(state.depthCompareMode)
@@ -855,7 +855,7 @@
 			output = bufferValue - Byte8(1, 1, 1, 1, 1, 1, 1, 1);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkStencilOp: %d", int(operation));
 		}
 	}
 
@@ -936,7 +936,7 @@
 			blendFactor.z = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[3]));
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendFactor: %d", int(blendFactorActive));
 		}
 	}
 
@@ -986,7 +986,7 @@
 			blendFactor.w = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[3]));
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendFactor: %d", int(blendFactorAlphaActive));
 		}
 	}
 
@@ -1097,7 +1097,7 @@
 			pixel.w = Short4(0xFFFFu);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkFormat %d", state.targetFormat[index]);
 		}
 
 		if((postBlendSRGB && state.writeSRGB) || isSRGB(index))
@@ -1178,7 +1178,7 @@
 			current.z = Short4(0x0000);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendOp: %d", int(state.blendOperation));
 		}
 
 		blendFactorAlpha(sourceFactor, current, pixel, state.sourceBlendFactorAlpha);
@@ -1221,7 +1221,7 @@
 			current.w = Short4(0x0000);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendOp: %d", int(state.blendOperationAlpha));
 		}
 	}
 
@@ -1362,7 +1362,7 @@
 			transpose4x4(current.x, current.y, current.z, current.w);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkFormat: %d", int(state.targetFormat[index]));
 		}
 
 		Short4 c01 = current.z;
@@ -1653,7 +1653,7 @@
 			}
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkFormat: %d", int(state.targetFormat[index]));
 		}
 	}
 
@@ -1724,7 +1724,7 @@
 			blendFactor.z = *Pointer<Float4>(data + OFFSET(DrawData,factor.invBlendConstant4F[2]));
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendFactor: %d", int(blendFactorActive));
 		}
 	}
 
@@ -1772,7 +1772,7 @@
 			blendFactor.w = *Pointer<Float4>(data + OFFSET(DrawData,factor.invBlendConstant4F[3]));
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendFactor: %d", int(blendFactorAlphaActive));
 		}
 	}
 
@@ -1841,7 +1841,7 @@
 			transpose4x4(pixel.x, pixel.y, pixel.z, pixel.w);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkFormat: %d", int(state.targetFormat[index]));
 		}
 
 		if((postBlendSRGB && state.writeSRGB) || isSRGB(index))
@@ -1913,7 +1913,7 @@
 			oC.z = Float4(0.0f);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendOp: %d", int(state.blendOperation));
 		}
 
 		blendFactorAlpha(sourceFactor, oC, pixel, state.sourceBlendFactorAlpha);
@@ -1957,7 +1957,7 @@
 			oC.w = Float4(0.0f);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkBlendOp: %d", int(state.blendOperationAlpha));
 		}
 	}
 
@@ -1995,7 +1995,7 @@
 			transpose4x4(oC.x, oC.y, oC.z, oC.w);
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkFormat: %d", int(state.targetFormat[index]));
 		}
 
 		int rgbaWriteMask = state.colorWriteActive(index);
@@ -2386,7 +2386,7 @@
 			}
 			break;
 		default:
-			ASSERT(false);
+			UNIMPLEMENTED("VkFormat: %d", int(state.targetFormat[index]));
 		}
 	}