mirror of
https://github.com/ncblakely/GiantsTools
synced 2024-07-03 20:11:45 +02:00
328 lines
8.8 KiB
C++
328 lines
8.8 KiB
C++
//--------------------------------------------------------------------------------------
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// File: Model.cpp
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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//
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// http://go.microsoft.com/fwlink/?LinkId=248929
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//--------------------------------------------------------------------------------------
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#include "pch.h"
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#include "Model.h"
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#include "CommonStates.h"
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#include "DirectXHelpers.h"
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#include "Effects.h"
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#include "PlatformHelpers.h"
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using namespace DirectX;
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#ifndef _CPPRTTI
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#error Model requires RTTI
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#endif
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//--------------------------------------------------------------------------------------
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// ModelMeshPart
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//--------------------------------------------------------------------------------------
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ModelMeshPart::ModelMeshPart() noexcept :
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indexCount(0),
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startIndex(0),
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vertexOffset(0),
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vertexStride(0),
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primitiveType(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST),
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indexFormat(DXGI_FORMAT_R16_UINT),
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isAlpha(false)
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{
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}
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ModelMeshPart::~ModelMeshPart()
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{
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}
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_Use_decl_annotations_
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void ModelMeshPart::Draw(
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ID3D11DeviceContext* deviceContext,
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IEffect* ieffect,
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ID3D11InputLayout* iinputLayout,
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std::function<void()> setCustomState) const
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{
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deviceContext->IASetInputLayout(iinputLayout);
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auto vb = vertexBuffer.Get();
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UINT vbStride = vertexStride;
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UINT vbOffset = 0;
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deviceContext->IASetVertexBuffers(0, 1, &vb, &vbStride, &vbOffset);
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// Note that if indexFormat is DXGI_FORMAT_R32_UINT, this model mesh part requires a Feature Level 9.2 or greater device
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deviceContext->IASetIndexBuffer(indexBuffer.Get(), indexFormat, 0);
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assert(ieffect != nullptr);
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ieffect->Apply(deviceContext);
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// Hook lets the caller replace our shaders or state settings with whatever else they see fit.
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if (setCustomState)
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{
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setCustomState();
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}
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// Draw the primitive.
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deviceContext->IASetPrimitiveTopology(primitiveType);
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deviceContext->DrawIndexed(indexCount, startIndex, vertexOffset);
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}
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_Use_decl_annotations_
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void ModelMeshPart::DrawInstanced(
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ID3D11DeviceContext* deviceContext,
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IEffect* ieffect,
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ID3D11InputLayout* iinputLayout,
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uint32_t instanceCount, uint32_t startInstanceLocation,
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std::function<void()> setCustomState) const
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{
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deviceContext->IASetInputLayout(iinputLayout);
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auto vb = vertexBuffer.Get();
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UINT vbStride = vertexStride;
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UINT vbOffset = 0;
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deviceContext->IASetVertexBuffers(0, 1, &vb, &vbStride, &vbOffset);
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// Note that if indexFormat is DXGI_FORMAT_R32_UINT, this model mesh part requires a Feature Level 9.2 or greater device
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deviceContext->IASetIndexBuffer(indexBuffer.Get(), indexFormat, 0);
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assert(ieffect != nullptr);
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ieffect->Apply(deviceContext);
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// Hook lets the caller replace our shaders or state settings with whatever else they see fit.
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if (setCustomState)
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{
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setCustomState();
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}
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// Draw the primitive.
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deviceContext->IASetPrimitiveTopology(primitiveType);
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deviceContext->DrawIndexedInstanced(
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indexCount, instanceCount, startIndex,
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vertexOffset,
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startInstanceLocation);
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}
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_Use_decl_annotations_
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void ModelMeshPart::CreateInputLayout(ID3D11Device* d3dDevice, IEffect* ieffect, ID3D11InputLayout** iinputLayout) const
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{
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if (iinputLayout)
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{
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*iinputLayout = nullptr;
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}
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if (!vbDecl || vbDecl->empty())
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throw std::exception("Model mesh part missing vertex buffer input elements data");
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if (vbDecl->size() > D3D11_IA_VERTEX_INPUT_STRUCTURE_ELEMENT_COUNT)
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throw std::exception("Model mesh part input layout size is too large for DirectX 11");
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ThrowIfFailed(
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CreateInputLayoutFromEffect(d3dDevice, ieffect, vbDecl->data(), vbDecl->size(), iinputLayout)
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);
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assert(iinputLayout != nullptr && *iinputLayout != nullptr);
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_Analysis_assume_(iinputLayout != nullptr && *iinputLayout != nullptr);
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}
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_Use_decl_annotations_
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void ModelMeshPart::ModifyEffect(ID3D11Device* d3dDevice, std::shared_ptr<IEffect>& ieffect, bool isalpha)
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{
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if (!vbDecl || vbDecl->empty())
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throw std::exception("Model mesh part missing vertex buffer input elements data");
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if (vbDecl->size() > D3D11_IA_VERTEX_INPUT_STRUCTURE_ELEMENT_COUNT)
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throw std::exception("Model mesh part input layout size is too large for DirectX 11");
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assert(ieffect != nullptr);
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this->effect = ieffect;
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this->isAlpha = isalpha;
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assert(d3dDevice != nullptr);
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ThrowIfFailed(
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CreateInputLayoutFromEffect(d3dDevice, effect.get(), vbDecl->data(), vbDecl->size(), inputLayout.ReleaseAndGetAddressOf())
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);
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}
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//--------------------------------------------------------------------------------------
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// ModelMesh
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//--------------------------------------------------------------------------------------
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ModelMesh::ModelMesh() noexcept :
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ccw(true),
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pmalpha(true)
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{
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}
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ModelMesh::~ModelMesh()
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{
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}
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_Use_decl_annotations_
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void ModelMesh::PrepareForRendering(
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ID3D11DeviceContext* deviceContext,
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const CommonStates& states,
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bool alpha,
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bool wireframe) const
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{
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assert(deviceContext != nullptr);
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// Set the blend and depth stencil state.
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ID3D11BlendState* blendState;
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ID3D11DepthStencilState* depthStencilState;
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if (alpha)
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{
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if (pmalpha)
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{
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blendState = states.AlphaBlend();
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depthStencilState = states.DepthRead();
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}
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else
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{
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blendState = states.NonPremultiplied();
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depthStencilState = states.DepthRead();
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}
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}
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else
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{
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blendState = states.Opaque();
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depthStencilState = states.DepthDefault();
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}
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deviceContext->OMSetBlendState(blendState, nullptr, 0xFFFFFFFF);
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deviceContext->OMSetDepthStencilState(depthStencilState, 0);
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// Set the rasterizer state.
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if (wireframe)
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deviceContext->RSSetState(states.Wireframe());
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else
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deviceContext->RSSetState(ccw ? states.CullCounterClockwise() : states.CullClockwise());
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// Set sampler state.
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ID3D11SamplerState* samplers[] =
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{
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states.LinearWrap(),
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states.LinearWrap(),
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};
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deviceContext->PSSetSamplers(0, 2, samplers);
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}
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_Use_decl_annotations_
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void XM_CALLCONV ModelMesh::Draw(
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ID3D11DeviceContext* deviceContext,
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FXMMATRIX world,
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CXMMATRIX view,
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CXMMATRIX projection,
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bool alpha,
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std::function<void()> setCustomState) const
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{
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assert(deviceContext != nullptr);
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for (auto it = meshParts.cbegin(); it != meshParts.cend(); ++it)
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{
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auto part = (*it).get();
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assert(part != nullptr);
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if (part->isAlpha != alpha)
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{
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// Skip alpha parts when drawing opaque or skip opaque parts if drawing alpha
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continue;
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}
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auto imatrices = dynamic_cast<IEffectMatrices*>(part->effect.get());
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if (imatrices)
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{
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imatrices->SetMatrices(world, view, projection);
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}
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part->Draw(deviceContext, part->effect.get(), part->inputLayout.Get(), setCustomState);
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}
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}
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//--------------------------------------------------------------------------------------
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// Model
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//--------------------------------------------------------------------------------------
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Model::~Model()
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{
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}
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_Use_decl_annotations_
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void XM_CALLCONV Model::Draw(
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ID3D11DeviceContext* deviceContext,
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const CommonStates& states,
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FXMMATRIX world,
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CXMMATRIX view,
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CXMMATRIX projection,
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bool wireframe, std::function<void()> setCustomState) const
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{
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assert(deviceContext != nullptr);
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// Draw opaque parts
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for (auto it = meshes.cbegin(); it != meshes.cend(); ++it)
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{
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auto mesh = it->get();
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assert(mesh != nullptr);
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mesh->PrepareForRendering(deviceContext, states, false, wireframe);
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mesh->Draw(deviceContext, world, view, projection, false, setCustomState);
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}
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// Draw alpha parts
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for (auto it = meshes.cbegin(); it != meshes.cend(); ++it)
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{
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auto mesh = it->get();
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assert(mesh != nullptr);
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mesh->PrepareForRendering(deviceContext, states, true, wireframe);
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mesh->Draw(deviceContext, world, view, projection, true, setCustomState);
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}
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}
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void Model::UpdateEffects(_In_ std::function<void(IEffect*)> setEffect)
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{
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if (mEffectCache.empty())
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{
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// This cache ensures we only set each effect once (could be shared)
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for (auto mit = meshes.cbegin(); mit != meshes.cend(); ++mit)
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{
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auto mesh = mit->get();
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assert(mesh != nullptr);
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for (auto it = mesh->meshParts.cbegin(); it != mesh->meshParts.cend(); ++it)
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{
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if ((*it)->effect)
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mEffectCache.insert((*it)->effect.get());
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}
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}
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}
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assert(setEffect != nullptr);
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for (auto it = mEffectCache.begin(); it != mEffectCache.end(); ++it)
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{
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setEffect(*it);
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}
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}
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