private static SpvInstruction ApplyScaling2DArray(CodeGenContext context, SpvInstruction vector, int index) { // The array index is not scaled, just x and y. var vectorXY = context.VectorShuffle(context.TypeVector(context.TypeS32(), 2), vector, vector, 0, 1); var vectorZ = context.CompositeExtract(context.TypeS32(), vector, 2); var vectorXYScaled = ApplyScaling2D(context, vectorXY, index); var vectorScaled = context.CompositeConstruct(context.TypeVector(context.TypeS32(), 3), vectorXYScaled, vectorZ); return(vectorScaled); }
public static SpvInstruction ApplyUnscaling( CodeGenContext context, AstTextureOperation texOp, SpvInstruction size, bool isBindless, bool isIndexed) { if (context.Config.Stage.SupportsRenderScale() && !isBindless && !isIndexed) { int index = context.Config.FindTextureDescriptorIndex(texOp); var pointerType = context.TypePointer(StorageClass.Uniform, context.TypeFP32()); var fieldIndex = context.Constant(context.TypeU32(), 4); var scaleIndex = context.Constant(context.TypeU32(), index); if (context.Config.Stage == ShaderStage.Vertex) { var scaleCountPointerType = context.TypePointer(StorageClass.Uniform, context.TypeS32()); var scaleCountElemPointer = context.AccessChain(scaleCountPointerType, context.SupportBuffer, context.Constant(context.TypeU32(), 3)); var scaleCount = context.Load(context.TypeS32(), scaleCountElemPointer); scaleIndex = context.IAdd(context.TypeU32(), scaleIndex, scaleCount); } scaleIndex = context.IAdd(context.TypeU32(), scaleIndex, context.Constant(context.TypeU32(), 1)); var scaleElemPointer = context.AccessChain(pointerType, context.SupportBuffer, fieldIndex, scaleIndex); var scale = context.GlslFAbs(context.TypeFP32(), context.Load(context.TypeFP32(), scaleElemPointer)); var passthrough = context.FOrdEqual(context.TypeBool(), scale, context.Constant(context.TypeFP32(), 1f)); var sizeFloat = context.ConvertSToF(context.TypeFP32(), size); var sizeUnscaled = context.FDiv(context.TypeFP32(), sizeFloat, scale); var sizeUnscaledInt = context.ConvertFToS(context.TypeS32(), sizeUnscaled); return(context.Select(context.TypeS32(), passthrough, size, sizeUnscaledInt)); } return(size); }
private static void ApplyScalingNoInterpolation(CodeGenContext context, SpvInstruction output, SpvInstruction vector, SpvInstruction scale) { if (context.Config.Stage == ShaderStage.Vertex) { scale = context.GlslFAbs(context.TypeFP32(), scale); } var vector2Type = context.TypeVector(context.TypeFP32(), 2); var vectorFloat = context.ConvertSToF(vector2Type, vector); var vectorScaled = context.VectorTimesScalar(vector2Type, vectorFloat, scale); context.Store(output, context.ConvertFToS(context.TypeVector(context.TypeS32(), 2), vectorScaled)); }
public static void DeclareLocals(CodeGenContext context, StructuredFunction function) { foreach (AstOperand local in function.Locals) { var localPointerType = context.TypePointer(StorageClass.Function, context.GetType(local.VarType.Convert())); var spvLocal = context.Variable(localPointerType, StorageClass.Function); context.AddLocalVariable(spvLocal); context.DeclareLocal(local, spvLocal); } var ivector2Type = context.TypeVector(context.TypeS32(), 2); var coordTempPointerType = context.TypePointer(StorageClass.Function, ivector2Type); var coordTemp = context.Variable(coordTempPointerType, StorageClass.Function); context.AddLocalVariable(coordTemp); context.CoordTemp = coordTemp; }
private static void ApplyScalingInterpolated(CodeGenContext context, SpvInstruction output, SpvInstruction vector, SpvInstruction scale) { var vector2Type = context.TypeVector(context.TypeFP32(), 2); var scaleNegated = context.FNegate(context.TypeFP32(), scale); var scaleVector = context.CompositeConstruct(vector2Type, scaleNegated, scaleNegated); var vectorFloat = context.ConvertSToF(vector2Type, vector); var vectorScaled = context.VectorTimesScalar(vector2Type, vectorFloat, scaleNegated); var fragCoordPointer = context.Inputs[AttributeConsts.PositionX]; var fragCoord = context.Load(context.TypeVector(context.TypeFP32(), 4), fragCoordPointer); var fragCoordXY = context.VectorShuffle(vector2Type, fragCoord, fragCoord, 0, 1); var scaleMod = context.FMod(vector2Type, fragCoordXY, scaleVector); var vectorInterpolated = context.FAdd(vector2Type, vectorScaled, scaleMod); context.Store(output, context.ConvertFToS(context.TypeVector(context.TypeS32(), 2), vectorInterpolated)); }
private static void DeclareSupportBuffer(CodeGenContext context) { if (!context.Config.Stage.SupportsRenderScale() && !(context.Config.LastInVertexPipeline && context.Config.GpuAccessor.QueryViewportTransformDisable())) { return; } var isBgraArrayType = context.TypeArray(context.TypeU32(), context.Constant(context.TypeU32(), SupportBuffer.FragmentIsBgraCount)); var viewportInverseVectorType = context.TypeVector(context.TypeFP32(), 4); var renderScaleArrayType = context.TypeArray(context.TypeFP32(), context.Constant(context.TypeU32(), SupportBuffer.RenderScaleMaxCount)); context.Decorate(isBgraArrayType, Decoration.ArrayStride, (LiteralInteger)SupportBuffer.FieldSize); context.Decorate(renderScaleArrayType, Decoration.ArrayStride, (LiteralInteger)SupportBuffer.FieldSize); var supportBufferStructType = context.TypeStruct(false, context.TypeU32(), isBgraArrayType, viewportInverseVectorType, context.TypeS32(), renderScaleArrayType); context.MemberDecorate(supportBufferStructType, 0, Decoration.Offset, (LiteralInteger)SupportBuffer.FragmentAlphaTestOffset); context.MemberDecorate(supportBufferStructType, 1, Decoration.Offset, (LiteralInteger)SupportBuffer.FragmentIsBgraOffset); context.MemberDecorate(supportBufferStructType, 2, Decoration.Offset, (LiteralInteger)SupportBuffer.ViewportInverseOffset); context.MemberDecorate(supportBufferStructType, 3, Decoration.Offset, (LiteralInteger)SupportBuffer.FragmentRenderScaleCountOffset); context.MemberDecorate(supportBufferStructType, 4, Decoration.Offset, (LiteralInteger)SupportBuffer.GraphicsRenderScaleOffset); context.Decorate(supportBufferStructType, Decoration.Block); var supportBufferPointerType = context.TypePointer(StorageClass.Uniform, supportBufferStructType); var supportBufferVariable = context.Variable(supportBufferPointerType, StorageClass.Uniform); context.Decorate(supportBufferVariable, Decoration.DescriptorSet, (LiteralInteger)0); context.Decorate(supportBufferVariable, Decoration.Binding, (LiteralInteger)0); context.AddGlobalVariable(supportBufferVariable); context.SupportBuffer = supportBufferVariable; }
private static SpvInstruction ApplyScaling2D(CodeGenContext context, SpvInstruction vector, int index) { var pointerType = context.TypePointer(StorageClass.Uniform, context.TypeFP32()); var fieldIndex = context.Constant(context.TypeU32(), 4); var scaleIndex = context.Constant(context.TypeU32(), index); if (context.Config.Stage == ShaderStage.Vertex) { var scaleCountPointerType = context.TypePointer(StorageClass.Uniform, context.TypeS32()); var scaleCountElemPointer = context.AccessChain(scaleCountPointerType, context.SupportBuffer, context.Constant(context.TypeU32(), 3)); var scaleCount = context.Load(context.TypeS32(), scaleCountElemPointer); scaleIndex = context.IAdd(context.TypeU32(), scaleIndex, scaleCount); } scaleIndex = context.IAdd(context.TypeU32(), scaleIndex, context.Constant(context.TypeU32(), 1)); var scaleElemPointer = context.AccessChain(pointerType, context.SupportBuffer, fieldIndex, scaleIndex); var scale = context.Load(context.TypeFP32(), scaleElemPointer); var ivector2Type = context.TypeVector(context.TypeS32(), 2); var localVector = context.CoordTemp; var passthrough = context.FOrdEqual(context.TypeBool(), scale, context.Constant(context.TypeFP32(), 1f)); var mergeLabel = context.Label(); if (context.Config.Stage == ShaderStage.Fragment) { var scaledInterpolatedLabel = context.Label(); var scaledNoInterpolationLabel = context.Label(); var needsInterpolation = context.FOrdLessThan(context.TypeBool(), scale, context.Constant(context.TypeFP32(), 0f)); context.SelectionMerge(mergeLabel, SelectionControlMask.MaskNone); context.BranchConditional(needsInterpolation, scaledInterpolatedLabel, scaledNoInterpolationLabel); // scale < 0.0 context.AddLabel(scaledInterpolatedLabel); ApplyScalingInterpolated(context, localVector, vector, scale); context.Branch(mergeLabel); // scale >= 0.0 context.AddLabel(scaledNoInterpolationLabel); ApplyScalingNoInterpolation(context, localVector, vector, scale); context.Branch(mergeLabel); context.AddLabel(mergeLabel); var passthroughLabel = context.Label(); var finalMergeLabel = context.Label(); context.SelectionMerge(finalMergeLabel, SelectionControlMask.MaskNone); context.BranchConditional(passthrough, passthroughLabel, finalMergeLabel); context.AddLabel(passthroughLabel); context.Store(localVector, vector); context.Branch(finalMergeLabel); context.AddLabel(finalMergeLabel); return(context.Load(ivector2Type, localVector)); } else { var passthroughLabel = context.Label(); var scaledLabel = context.Label(); context.SelectionMerge(mergeLabel, SelectionControlMask.MaskNone); context.BranchConditional(passthrough, passthroughLabel, scaledLabel); // scale == 1.0 context.AddLabel(passthroughLabel); context.Store(localVector, vector); context.Branch(mergeLabel); // scale != 1.0 context.AddLabel(scaledLabel); ApplyScalingNoInterpolation(context, localVector, vector, scale); context.Branch(mergeLabel); context.AddLabel(mergeLabel); return(context.Load(ivector2Type, localVector)); } }