Ejemplo n.º 1
0
 public IEmitVal EmitAttributeRef(
     MidAttributeWrapperDecl wrapper,
     IEmitBlock block,
     EmitEnv env)
 {
     return(EmitAttributeRef(
                wrapper.Attribute,
                block,
                env));
 }
Ejemplo n.º 2
0
        //



        public override void EmitImplSetup()
        {
            var uniformElement  = GetElement("Uniform");
            var rasterVertex    = GetElement("RasterVertex");
            var fragmentElement = GetElement("Fragment");
            var pixelElement    = GetElement("Pixel");

            // Find all render targets:

            renderTargetAttributes = (from a in pixelElement.Attributes
                                      where a.Exp != null
                                      where a.IsOutput
                                      select a).ToArray();
            renderTargetCount = renderTargetAttributes.Length;

            // Depth-stencil view

            depthStencilViewAttribute = GetAttribute(uniformElement, "depthStencilView");


            // Compute the setup required by the OM


            // Blending stuff
            var blendStateType = EmitTarget.GetOpaqueType("ID3D11BlendState*");

            blendStateField = EmitClass.AddPrivateField(
                blendStateType,
                "_blendState");


            _renderTargetBlendDescs = new TargetBlendDesc[renderTargetCount];
            _renderTargetSources    = new SourceInfo[renderTargetCount];
            for (int ii = 0; ii < renderTargetCount; ++ii)
            {
                DecomposeAttr(renderTargetAttributes[ii], ii);
            }

            var rtBlendDescType = EmitTarget.GetBuiltinType("D3D11_RENDER_TARGET_BLEND_DESC");
            var blendSpecVals   = (from desc in _renderTargetBlendDescs
                                   select InitBlock.Struct(
                                       "D3D11_RENDER_TARGET_BLEND_DESC",
                                       InitBlock.LiteralBool(desc.blendEnable),
                                       InitBlock.Enum32(desc.color.srcBlend),
                                       InitBlock.Enum32(desc.color.destBlend),
                                       InitBlock.Enum32(desc.color.op),
                                       InitBlock.Enum32(desc.alpha.srcBlend),
                                       InitBlock.Enum32(desc.alpha.destBlend),
                                       InitBlock.Enum32(desc.alpha.op),
                                       InitBlock.LiteralU32(desc.writeMask))).ToList();

            while (blendSpecVals.Count < 8) // \todo: get the limits from somwhere!!!
            {
                blendSpecVals.Add(
                    InitBlock.Struct(
                        "D3D11_RENDER_TARGET_BLEND_DESC",
                        InitBlock.LiteralBool(false),
                        InitBlock.Enum32("D3D11_BLEND", "D3D11_BLEND_ONE", D3D11_BLEND.D3D11_BLEND_ONE),
                        InitBlock.Enum32("D3D11_BLEND", "D3D11_BLEND_ZERO", D3D11_BLEND.D3D11_BLEND_ZERO),
                        InitBlock.Enum32("D3D11_BLEND_OP", "D3D11_BLEND_OP_ADD", D3D11_BLEND_OP.D3D11_BLEND_OP_ADD),
                        InitBlock.Enum32("D3D11_BLEND", "D3D11_BLEND_ONE", D3D11_BLEND.D3D11_BLEND_ONE),
                        InitBlock.Enum32("D3D11_BLEND", "D3D11_BLEND_ZERO", D3D11_BLEND.D3D11_BLEND_ZERO),
                        InitBlock.Enum32("D3D11_BLEND_OP", "D3D11_BLEND_OP_ADD", D3D11_BLEND_OP.D3D11_BLEND_OP_ADD),
                        InitBlock.LiteralU32((UInt32)D3D11_COLOR_WRITE_ENABLE.D3D11_COLOR_WRITE_ENABLE_ALL)));
            }

            var blendSpecsVal = InitBlock.Array(
                rtBlendDescType,
                blendSpecVals);


            InitBlock.AppendComment("D3D11 Output Merger");
            var blendDescVal =
                InitBlock.Temp("blendDesc",
                               InitBlock.Struct(
                                   "D3D11_BLEND_DESC",
                                   InitBlock.LiteralBool(false),
                                   InitBlock.LiteralBool(true),
                                   blendSpecsVal));

            InitBlock.SetArrow(
                CtorThis,
                blendStateField,
                EmitTarget.GetNullPointer(blendStateType));

            InitBlock.CallCOM(
                CtorDevice,
                "ID3D11Device",
                "CreateBlendState",
                blendDescVal.GetAddress(),
                InitBlock.GetArrow(CtorThis, blendStateField).GetAddress());

            DtorBlock.CallCOM(
                DtorBlock.GetArrow(DtorThis, blendStateField),
                "IUnknown",
                "Release");



            // Emit HLSL code for PS

            InitBlock.AppendComment("D3D11 Pixel Shader");

            hlslContext = new EmitContextHLSL(SharedHLSL, Range, this.EmitClass.GetName());

            var entryPointSpan = hlslContext.EntryPointSpan;

            entryPointSpan.WriteLine("void main(");

            bool firstParam = true;

            hlslContext.DeclareConnectorAndBind(
                rasterVertex,
                GetAttribute(fragmentElement, "__rv2f"),
                ref firstParam,
                entryPointSpan);

            hlslContext.DeclareParamAndBind(
                GetAttribute(fragmentElement, "PS_ScreenSpacePosition"),
                "SV_Position",
                ref firstParam,
                entryPointSpan);

            for (int ii = 0; ii < renderTargetCount; ++ii)
            {
                if (!firstParam)
                {
                    entryPointSpan.WriteLine(",");
                }
                firstParam = false;

                var    sourceInfo = _renderTargetSources[ii];
                MidExp exp        = null;
                if (sourceInfo.combinedExp != null)
                {
                    // \todo: Validate other bits and bobs!!!
                    exp = sourceInfo.combinedExp;
                }
                else
                {
                    throw new NotImplementedException();
                }

                entryPointSpan.Write("\tout {1} target{0} : SV_Target{0}", ii,
                                     hlslContext.EmitType(exp.Type));
            }
            entryPointSpan.WriteLine(" )");
            entryPointSpan.WriteLine("{");


            hlslContext.EmitTempRecordCtor(
                entryPointSpan,
                fragmentElement,
                GetAttribute(pixelElement, "__ps2om"));

            var psCullFragmentAttr = GetAttribute(fragmentElement, "PS_CullFragment");

            entryPointSpan.WriteLine("\tif( {0} ) discard;",
                                     hlslContext.EmitAttribRef(psCullFragmentAttr, entryPointSpan));


            for (int ii = 0; ii < renderTargetCount; ++ii)
            {
                var    sourceInfo = _renderTargetSources[ii];
                MidExp exp        = null;
                if (sourceInfo.combinedExp != null)
                {
                    // \todo: Validate other bits and bobs!!!
                    exp = sourceInfo.combinedExp;
                }
                else
                {
                    throw new NotImplementedException();
                }

                entryPointSpan.WriteLine("\ttarget{0} = {1};",
                                         ii,
                                         hlslContext.EmitExp(exp, entryPointSpan));
            }

            entryPointSpan.WriteLine("}");

            hlslContext.EmitConstantBufferDecl();

            //

            EmitShaderSetup(
                hlslContext,
                "ps_5_0",
                "Pixel",
                "PS");
        }