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#include "texture_manager.hpp"
#include "symbols_texture.hpp"
#include "glfunctions.hpp"
#include "../base/stl_add.hpp"
#include "../coding/file_name_utils.hpp"
#include "../platform/platform.hpp"
#include "../std/vector.hpp"
class TextureManager::TextureSet
{
public:
TextureSet(uint32_t maxSize)
: m_maxSize(maxSize)
{
}
~TextureSet()
{
GetRangeDeletor(m_textures, MasterPointerDeleter())();
}
bool IsFull() const
{
return !(m_textures.size() < m_maxSize);
}
void AddTexture(TransferPointer<Texture> texture)
{
ASSERT(!IsFull(), ());
m_textures.push_back(MasterPointer<Texture>(texture));
}
int32_t FindResource(Texture::Key const & key, m2::RectF & texRect, m2::PointU & pixelSize) const
{
for (size_t i = 0; i < m_textures.size(); ++i)
{
if (m_textures[i]->FindResource(key, texRect, pixelSize))
return i;
}
return -1;
}
void BindTextureSet() const
{
for (size_t i = 0; i < m_textures.size(); ++i)
{
GLFunctions::glActiveTexture(GLConst::GLTexture0 + i);
m_textures[i]->Bind();
}
}
uint32_t GetSize() const
{
return m_textures.size();
}
private:
vector<MasterPointer<Texture> > m_textures;
uint32_t m_maxSize;
};
void TextureManager::Init(const string & resourcePostfix)
{
// in shader we handle only 8 textures
m_maxTextureBlocks = min(8, GLFunctions::glGetInteger(GLConst::GLMaxFragmentTextures));
SymbolsTexture * symbols = new SymbolsTexture();
symbols->Load(my::JoinFoldersToPath(string("resources-") + resourcePostfix, "symbols"));
m_textures.Reset(new TextureSet(m_maxTextureBlocks));
m_textures->AddTexture(MovePointer<Texture>(symbols));
}
void TextureManager::Release()
{
m_textures.Destroy();
}
void TextureManager::GetSymbolRegion(const string & symbolName, TextureRegion & symbol) const
{
SymbolsTexture::SymbolKey key(symbolName);
symbol.m_textureSet = 0;
symbol.m_textureOffset = m_textures->FindResource(key, symbol.m_stRect, symbol.m_pixelSize);
ASSERT(symbol.m_textureOffset != -1, ());
}
void TextureManager::BindTextureSet(uint32_t textureSet) const
{
ASSERT_LESS(textureSet, 1, ()); // TODO replace 1 to m_textureSets.size()
m_textures->BindTextureSet();
}
uint32_t TextureManager::GetTextureCount(uint32_t textureSet) const
{
ASSERT_LESS(textureSet, 1, ()); // TODO replace 1 to m_textureSets.size()
return m_textures->GetSize();
}
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