todo : changer en m_pLayoutDesc
todo : enlever le prefixe des enums !
Intro :
Voici une classe qui vous aidera à déclarer et à définir vos fichiers shaders facilement.
Cette classe gestionnaire vous permettra de définir les variables shaders utilisées et même de paramétrer automatiquement certaines types de variables.
Explications :
Voici le fichier ShaderTechnique.h :
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#ifndef SHADER_TECHNIQUE_H #define SHADER_TECHNIQUE_H enum ShaderVariableType { WORLD, VIEW, PROJECTION, WVP, WORLD_INVERSE, WORLD_INVERSE_TRANSPOSE, LIGHT_POS, EYE_POS, TEXTURE_0, TEXTURE_1, TEXTURE_2, ANY }; class ShaderTechnique { public: ShaderTechnique(const std::string& sEffectFileName, const std::string& sEffectTechniqueName, VertexLayoutType layoutType = VertexLayoutType::PTN_VERTEX); virtual ~ShaderTechnique(); virtual bool Initialize(); ID3D10EffectTechnique* GetShaderTechnique(); ID3D10InputLayout* GetVertexLayout(); D3D10_INPUT_ELEMENT_DESC* GetLayout(); void AddTexture(const std::string& sTextureFileName); void RegisterMatrixVariable(std::string sVariableName, ShaderVariableType variableType = ShaderVariableType::ANY); void RegisterVectorVariable(std::string sVariableName, ShaderVariableType variableType = ShaderVariableType::ANY); void RegisterScalarVariable(std::string sVariableName, ShaderVariableType variableType = ShaderVariableType::ANY); void RegisterVariable(std::string sVariableName, ShaderVariableType variableType = ShaderVariableType::ANY); void RegisterTextureVariable(std::string sTextureName, ShaderVariableType variableType = ShaderVariableType::ANY); void SetMatrix(const std::string& sMatrixName, D3DXMATRIX* mat); void SetColor(const std::string& sVectorName, D3DXCOLOR& col); void SetVector(const std::string& sVectorName, D3DXVECTOR3& vec); void SetVector(const std::string& sVectorName, D3DXVECTOR2& vec); void SetScalar(const std::string& sScalarName, float fValue); void SetVariable(const std::string& sVariableName, void* pValue, unsigned int iSizeInBytes); void SetTexture(const std::string& sTextureName, const std::string& sTextureAlias); void SetTexture(const std::string& sTextureName, unsigned int iSlot); void SetTextureRV(const std::string& sTextureName, ID3D10ShaderResourceView* pTextureRV); std::string GetShaderVariableName(ShaderVariableType variableType); void SetAutoMatrix(ShaderVariableType variableType); void SetAutoVector(ShaderVariableType variableType); virtual void SetupShaderVariables() {} virtual void Update(float fTimeSinceLastFrame) {} void SetCurrentWorldMatrix(const D3DXMATRIX& pWorldMatrix); private: ID3D10Effect* m_pEffect; ID3D10EffectTechnique* m_pTechnique; D3D10_INPUT_ELEMENT_DESC* m_layout; ID3D10InputLayout* m_pVertexLayout; std::map<std::string, ID3D10EffectMatrixVariable*> m_matrixVariables; std::map<std::string, ID3D10EffectVectorVariable*> m_vectorVariables; std::map<std::string, ID3D10EffectScalarVariable*> m_scalarVariables; // On peut se servir de variables génériques afin de passer des structures // au programme shader std::map<std::string, ID3D10EffectVariable*> m_variables; std::map<std::string, ID3D10EffectShaderResourceVariable*> m_ressourceVariables; std::map<std::string, unsigned int> m_texturesAliasSlot; // Un tableau pour la gestion automatique des variables shader std::map<ShaderVariableType, std::string> m_variablesTypes; std::string m_sEffectFileName; std::string m_sEffectTechniqueName; VertexLayoutType m_layoutType; bool m_bInitDone; D3DXMATRIX m_pCurrentWorld; unsigned int m_iCurrentTextureSlot; static unsigned int m_iCurrentShaderTechnique; }; #endif |
Voici le fichier ShaderTechnique.cpp :
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#include "ShaderTechnique.h" unsigned int ShaderTechnique::m_iCurrentShaderTechnique = 0; ShaderTechnique::ShaderTechnique(const std::string& sEffectFileName, const std::string& sEffectTechniqueName, VertexLayoutType layoutType) : m_pEffect(nullptr), m_pTechnique(nullptr), m_pVertexLayout(nullptr), m_layout(nullptr), m_bInitDone(false), m_sEffectFileName(sEffectFileName), m_sEffectTechniqueName(sEffectTechniqueName), m_layoutType(layoutType), m_iCurrentTextureSlot(0) { D3DXMatrixIdentity(&m_pCurrentWorld); m_iCurrentShaderTechnique++; } ShaderTechnique::~ShaderTechnique() { SAFE_RELEASE(m_pEffect); SAFE_RELEASE(m_pVertexLayout); } bool ShaderTechnique::Initialize() { if (m_bInitDone) { return false; } DWORD dwShaderFlags = D3D10_SHADER_ENABLE_STRICTNESS; #if defined( DEBUG ) || defined( _DEBUG ) // Permet d'afficher les éventuelles erreurs de la compilation d'un shader dwShaderFlags |= D3D10_SHADER_DEBUG; #endif HRESULT hr; ID3D10Blob* pBlob = nullptr; // Pour la création du shader, on le compile hr = D3DX10CreateEffectFromFileA(m_sEffectFileName.c_str(), nullptr, nullptr, "fx_4_0", dwShaderFlags, 0, D3D10_RENDERER->GetDevice(), nullptr, nullptr, &m_pEffect, &pBlob, nullptr); if (FAILED(hr)) { if (pBlob) { // Affiche l'erreur de compilation du shader MessageBoxA(NULL, (PCSTR)pBlob->GetBufferPointer(), "Erreur sur le fichier shader", MB_ICONHAND | MB_OK); } else { ShowMessageBoxDXError(hr); } return false; } unsigned int iNumElements = 0; if (m_layoutType == PTN_VERTEX) // Position, texture, normal { m_layout = new D3D10_INPUT_ELEMENT_DESC[3]; memcpy(m_layout, layoutPTN, sizeof(D3D10_INPUT_ELEMENT_DESC) * 3); iNumElements = sizeof( layoutPTN ) / sizeof( layoutPTN[0] ); } else if (m_layoutType == PT_VERTEX) { m_layout = new D3D10_INPUT_ELEMENT_DESC[2]; memcpy(m_layout, layoutPT, sizeof(D3D10_INPUT_ELEMENT_DESC) * 2); iNumElements = sizeof( layoutPT ) / sizeof( layoutPT[0] ); } else if (m_layoutType == PN_VERTEX) // Position, Normal { m_layout = new D3D10_INPUT_ELEMENT_DESC[2]; memcpy(m_layout, layoutPN, sizeof(D3D10_INPUT_ELEMENT_DESC) * 2); iNumElements = sizeof( layoutPN ) / sizeof( layoutPN[0] ); } else if (m_layoutType == PC_VERTEX) // Position, couleur { m_layout = new D3D10_INPUT_ELEMENT_DESC[2]; memcpy(m_layout, layoutPC, sizeof(D3D10_INPUT_ELEMENT_DESC) * 2); iNumElements = sizeof( layoutPC ) / sizeof( layoutPC[0] ); } else if (m_layoutType == PTC_VERTEX) // Position, couleur { m_layout = new D3D10_INPUT_ELEMENT_DESC[3]; memcpy(m_layout, layoutPTC, sizeof(D3D10_INPUT_ELEMENT_DESC) * 3); iNumElements = sizeof( layoutPTC ) / sizeof( layoutPTC[0] ); } else if (m_layoutType == WATER_VERTEX) { m_layout = new D3D10_INPUT_ELEMENT_DESC[3]; memcpy(m_layout, layoutWater, sizeof(D3D10_INPUT_ELEMENT_DESC) * 3); iNumElements = sizeof( layoutWater ) / sizeof( layoutWater[0] ); } else { FastMessageBox("Erreur de type de layout !"); return false; } // On acquiert la technique du shader HLSL m_pTechnique = m_pEffect->GetTechniqueByName(m_sEffectTechniqueName.c_str()); if (m_pTechnique == nullptr) { FastMessageBox("Erreur du nom de la technique passé en paramètre"); return false; } D3D10_PASS_DESC PassDesc; m_pTechnique->GetPassByIndex(0)->GetDesc(&PassDesc); if (!m_pTechnique->IsValid()) { std::string sErrorMsg = "Erreur sur la technique du fichier shader : " + m_sEffectFileName; FastMessageBox(sErrorMsg.c_str()); return false; } hr = D3D10_RENDERER->GetDevice()->CreateInputLayout(m_layout, iNumElements, PassDesc.pIAInputSignature, PassDesc.IAInputSignatureSize, &m_pVertexLayout); if (FAILED(hr)) { ShowMessageBoxDXError(hr); return false; } m_bInitDone = true; return true; } ID3D10EffectTechnique* ShaderTechnique::GetShaderTechnique() { return m_pTechnique; } ID3D10InputLayout* ShaderTechnique::GetVertexLayout() { return m_pVertexLayout; } D3D10_INPUT_ELEMENT_DESC* ShaderTechnique::GetLayout() { return m_layout; } // Ajoute une texture au gestionnaire de texture et fait correspondre // un slot à cette classe void ShaderTechnique::AddTexture(const std::string& sTextureFileName) { std::string sTextureAliasName = std::to_string(m_iCurrentShaderTechnique) + std::to_string(m_iCurrentTextureSlot++); m_texturesAliasSlot[sTextureAliasName] = m_iCurrentTextureSlot; TEXTURE_MANAGER->AddTexture(sTextureFileName, sTextureAliasName); } void ShaderTechnique::RegisterTextureVariable(std::string sTextureName, ShaderVariableType variableType) { ID3D10EffectShaderResourceVariable* pDiffuseVariable = nullptr; pDiffuseVariable = m_pEffect->GetVariableByName(sTextureName.c_str())->AsShaderResource(); m_ressourceVariables[sTextureName] = pDiffuseVariable; } void ShaderTechnique::RegisterMatrixVariable(std::string sVariableName, ShaderVariableType variableType) { ID3D10EffectMatrixVariable* pMatrixVariable = nullptr; pMatrixVariable = m_pEffect->GetVariableByName(sVariableName.c_str())->AsMatrix(); m_matrixVariables[sVariableName] = pMatrixVariable; m_variablesTypes[variableType] = sVariableName; } void ShaderTechnique::RegisterVectorVariable(std::string sVariableName, ShaderVariableType variableType) { ID3D10EffectVectorVariable* pVectorVariable = nullptr; pVectorVariable = m_pEffect->GetVariableByName(sVariableName.c_str())->AsVector(); m_vectorVariables[sVariableName] = pVectorVariable; m_variablesTypes[variableType] = sVariableName; } void ShaderTechnique::RegisterScalarVariable(std::string sVariableName, ShaderVariableType variableType) { ID3D10EffectScalarVariable* pScalarVariable = nullptr; pScalarVariable = m_pEffect->GetVariableByName(sVariableName.c_str())->AsScalar(); m_scalarVariables[sVariableName] = pScalarVariable; m_variablesTypes[variableType] = sVariableName; } void ShaderTechnique::RegisterVariable(std::string sVariableName, ShaderVariableType variableType) { ID3D10EffectVariable* pVariable = nullptr; pVariable = m_pEffect->GetVariableByName(sVariableName.c_str()); m_variables[sVariableName] = pVariable; m_variablesTypes[variableType] = sVariableName; } void ShaderTechnique::SetMatrix(const std::string& sMatrixName, D3DXMATRIX* mat) { if (m_matrixVariables.count(sMatrixName) > 0) { m_matrixVariables[sMatrixName]->SetMatrix((float*)mat); } } void ShaderTechnique::SetColor(const std::string& sVectorName, D3DXCOLOR& col) { if (m_vectorVariables.count(sVectorName) > 0) { m_vectorVariables[sVectorName]->SetFloatVector(col); } } void ShaderTechnique::SetVector(const std::string& sVectorName, D3DXVECTOR3& vec) { if (m_vectorVariables.count(sVectorName) > 0) { m_vectorVariables[sVectorName]->SetFloatVector(vec); } } void ShaderTechnique::SetVector(const std::string& sVectorName, D3DXVECTOR2& vec) { if (m_vectorVariables.count(sVectorName) > 0) { m_vectorVariables[sVectorName]->SetFloatVector(vec); } } void ShaderTechnique::SetScalar(const std::string& sScalarName, float fValue) { if (m_scalarVariables.count(sScalarName) > 0) { m_scalarVariables[sScalarName]->SetFloat(fValue); } } void ShaderTechnique::SetVariable(const std::string& sVariableName, void* pValue, unsigned int iSizeInBytes) { if (m_variables.count(sVariableName) > 0) { m_variables[sVariableName]->SetRawValue(pValue, 0, iSizeInBytes); } } void ShaderTechnique::SetTexture(const std::string& sTextureName, unsigned int iSlot) { std::string sTextureAliasName = std::to_string(m_iCurrentShaderTechnique) + std::to_string(iSlot); if (m_texturesAliasSlot.count(sTextureAliasName) > 0) { ID3D10ShaderResourceView* pTextureRV = TEXTURE_MANAGER->GetTexture(sTextureAliasName); if (pTextureRV != nullptr) { m_ressourceVariables[sTextureName]->SetResource(pTextureRV); } } } void ShaderTechnique::SetTexture(const std::string& sTextureName, const std::string& sTextureAlias) { if (TEXTURE_MANAGER->HasTexture(sTextureAlias)) { ID3D10ShaderResourceView* pTextureRV = TEXTURE_MANAGER->GetTexture(sTextureAlias); if (pTextureRV != nullptr) { m_ressourceVariables[sTextureName]->SetResource(pTextureRV); } } } void ShaderTechnique::SetTextureRV(const std::string& sTextureName, ID3D10ShaderResourceView* pTextureRV) { if (m_ressourceVariables.count(sTextureName) > 0) { m_ressourceVariables[sTextureName]->SetResource(pTextureRV); } } std::string ShaderTechnique::GetShaderVariableName(ShaderVariableType variableType) { if (m_variablesTypes.count(variableType)) { return m_variablesTypes[variableType]; } else { return UNKNOWN; } } void ShaderTechnique::SetCurrentWorldMatrix(const D3DXMATRIX& pWorldMatrix) { m_pCurrentWorld = pWorldMatrix; } void ShaderTechnique::SetAutoMatrix(ShaderVariableType variableType) { std::string sVariableName = GetShaderVariableName(variableType); switch (variableType) { case ShaderVariableType::WORLD: { SetMatrix(sVariableName, &m_pCurrentWorld); break; } case ShaderVariableType::VIEW: { SetMatrix(sVariableName, SCENE_MANAGER->GetActiveCamera()->GetViewMatrix()); break; } case ShaderVariableType::PROJECTION: { SetMatrix(sVariableName, SCENE_MANAGER->GetActiveCamera()->GetProjectionMatrix()); break; } case ShaderVariableType::WORLD_INVERSE: { D3DXMATRIX worldInverse; D3DXMatrixIdentity(&m_pCurrentWorld); D3DXMatrixInverse(&worldInverse, nullptr, &m_pCurrentWorld); SetMatrix(sVariableName, &worldInverse); break; } case ShaderVariableType::WORLD_INVERSE_TRANSPOSE: { D3DXMATRIX worldInverseTranspose; D3DXMatrixTranspose(&worldInverseTranspose, &worldInverseTranspose); D3DXMatrixInverse(&worldInverseTranspose, nullptr, &m_pCurrentWorld); SetMatrix(sVariableName, &worldInverseTranspose); break; } } } void ShaderTechnique::SetAutoVector(ShaderVariableType variableType) { std::string sVariableName = GetShaderVariableName(variableType); switch (variableType) { case ShaderVariableType::EYE_POS: { SetVector(sVariableName, SCENE_MANAGER->GetActiveCamera()->GetPosition()); break; } case ShaderVariableType::LIGHT_POS: { static float r = 0.0f; r += 0.00008f; D3DXVECTOR3 lightPos = D3D10_RENDERER->MatrixRotationAxis(D3DXVECTOR3(0.0f, 1.0f, 0.0f), D3DXVECTOR3(0.0f, 0.0f, -5.0f), r); SetVector(sVariableName, lightPos); break; } } } |
Résumé :
Cette classe vous permettra de paramétrer vos fichiers shaders facilement.