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SimpleTexturedDirectx11: embedded texture loading fixes 

- remove assumption that embedded texture names start with "*0", etc.
- rename ModelLoader::getTextureFromModel() to loadEmbeddedTexture()
- support loading uncompressed embedded textures

Fixes display of bullsquid.mdl from Half-Life (which has an
embdedded texture named "bottommap.bmp")
pull/3808/head
Eric Wasylishen 2021-04-24 14:13:51 -06:00
parent 21d7085be6
commit ee8d1b0417
2 changed files with 42 additions and 45 deletions
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83
samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/ModelLoader.cpp
View File

@ -42,22 +42,12 @@ void ModelLoader::Draw(ID3D11DeviceContext * devcon) {
}
}
std::string textype;
Mesh ModelLoader::processMesh(aiMesh * mesh, const aiScene * scene) {
// Data to fill
std::vector<VERTEX> vertices;
std::vector<UINT> indices;
std::vector<Texture> textures;
if (mesh->mMaterialIndex >= 0) {
aiMaterial* mat = scene->mMaterials[mesh->mMaterialIndex];
if (textype.empty()) {
textype = determineTextureType(scene, mat);
}
}
// Walk through each of the mesh's vertices
for (UINT i = 0; i < mesh->mNumVertices; i++) {
VERTEX vertex;
@ -108,9 +98,10 @@ std::vector<Texture> ModelLoader::loadMaterialTextures(aiMaterial * mat, aiTextu
if (!skip) { // If texture hasn't been loaded already, load it
HRESULT hr;
Texture texture;
if (textype == "embedded compressed texture") {
int textureindex = getTextureIndex(&str);
texture.texture = getTextureFromModel(scene, textureindex);
const aiTexture* embeddedTexture = scene->GetEmbeddedTexture(str.C_Str());
if (embeddedTexture != nullptr) {
texture.texture = loadEmbeddedTexture(embeddedTexture);
} else {
std::string filename = std::string(str.C_Str());
filename = directory_ + '/' + filename;
@ -148,38 +139,46 @@ void ModelLoader::processNode(aiNode * node, const aiScene * scene) {
}
}
std::string ModelLoader::determineTextureType(const aiScene * scene, aiMaterial * mat) {
aiString textypeStr;
mat->GetTexture(aiTextureType_DIFFUSE, 0, &textypeStr);
std::string textypeteststr = textypeStr.C_Str();
if (textypeteststr == "*0" || textypeteststr == "*1" || textypeteststr == "*2" || textypeteststr == "*3" || textypeteststr == "*4" || textypeteststr == "*5") {
if (scene->mTextures[0]->mHeight == 0) {
return "embedded compressed texture";
} else {
return "embedded non-compressed texture";
}
}
if (textypeteststr.find('.') != std::string::npos) {
return "textures are on disk";
}
return ".";
}
int ModelLoader::getTextureIndex(aiString * str) {
std::string tistr;
tistr = str->C_Str();
tistr = tistr.substr(1);
return stoi(tistr);
}
ID3D11ShaderResourceView * ModelLoader::getTextureFromModel(const aiScene * scene, int textureindex) {
ID3D11ShaderResourceView * ModelLoader::loadEmbeddedTexture(const aiTexture* embeddedTexture) {
HRESULT hr;
ID3D11ShaderResourceView *texture;
ID3D11ShaderResourceView *texture = nullptr;
int* size = reinterpret_cast<int*>(&scene->mTextures[textureindex]->mWidth);
if (embeddedTexture->mHeight != 0) {
// Load an uncompressed ARGB8888 embedded texture
D3D11_TEXTURE2D_DESC desc;
desc.Width = embeddedTexture->mWidth;
desc.Height = embeddedTexture->mHeight;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
desc.MiscFlags = 0;
hr = CreateWICTextureFromMemory(dev_, devcon_, reinterpret_cast<unsigned char*>(scene->mTextures[textureindex]->pcData), *size, nullptr, &texture);
D3D11_SUBRESOURCE_DATA subresourceData;
subresourceData.pSysMem = embeddedTexture->pcData;
subresourceData.SysMemPitch = embeddedTexture->mWidth * 4;
subresourceData.SysMemSlicePitch = embeddedTexture->mWidth * embeddedTexture->mHeight * 4;
ID3D11Texture2D *texture2D = nullptr;
hr = dev_->CreateTexture2D(&desc, &subresourceData, &texture2D);
if (FAILED(hr))
MessageBox(hwnd_, "CreateTexture2D failed!", "Error!", MB_ICONERROR | MB_OK);
hr = dev_->CreateShaderResourceView(texture2D, nullptr, &texture);
if (FAILED(hr))
MessageBox(hwnd_, "CreateShaderResourceView failed!", "Error!", MB_ICONERROR | MB_OK);
return texture;
}
// mHeight is 0, so try to load a compressed texture of mWidth bytes
const size_t size = embeddedTexture->mWidth;
hr = CreateWICTextureFromMemory(dev_, devcon_, reinterpret_cast<const unsigned char*>(embeddedTexture->pcData), size, nullptr, &texture);
if (FAILED(hr))
MessageBox(hwnd_, "Texture couldn't be created from memory!", "Error!", MB_ICONERROR | MB_OK);

4
samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/ModelLoader.h
View File

@ -35,9 +35,7 @@ private:
void processNode(aiNode* node, const aiScene* scene);
Mesh processMesh(aiMesh* mesh, const aiScene* scene);
std::vector<Texture> loadMaterialTextures(aiMaterial* mat, aiTextureType type, std::string typeName, const aiScene* scene);
std::string determineTextureType(const aiScene* scene, aiMaterial* mat);
int getTextureIndex(aiString* str);
ID3D11ShaderResourceView* getTextureFromModel(const aiScene* scene, int textureindex);
ID3D11ShaderResourceView* loadEmbeddedTexture(const aiTexture* embeddedTexture);
};
#endif // !MODEL_LOADER_H