134 lines
2.7 KiB
C++
134 lines
2.7 KiB
C++
#pragma once
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#ifndef REAL_BUILD
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# include "externals.hh"
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#endif
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enum class E_TexType {
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RGBA8 ,
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RGBA16F ,
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RGB8 ,
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RGB16F ,
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R8 ,
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R16F ,
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};
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enum class E_TexSampling {
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NEAREST ,
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LINEAR ,
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};
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enum class E_TexWrap {
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REPEAT ,
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CLAMP_EDGE ,
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CLAMP_BORDER
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};
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struct T_Texture
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{
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T_Texture( ) = delete;
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T_Texture( T_Texture const& ) = delete;
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T_Texture( T_Texture&& ) = delete;
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T_Texture(
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__rd__ const uint32_t width ,
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__rd__ const uint32_t height ,
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__rd__ const E_TexType type ,
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__rd__ const uint32_t levels = 1 );
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~T_Texture( );
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T_Texture& samplingMode(
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__rd__ const E_TexSampling mode );
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T_Texture& wrap(
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__rd__ const E_TexWrap mode );
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GLuint id( ) const noexcept { return id_; }
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uint32_t levels( ) const noexcept { return levels_; }
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uint32_t width( ) const noexcept { return width_; }
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uint32_t height( ) const noexcept { return height_; }
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private:
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GLuint id_;
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uint32_t levels_ , width_ , height_;
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};
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struct T_TextureSampler
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{
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T_TextureSampler( T_TextureSampler const& ) = delete;
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// --------------------------------------------------------------------
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// Initialisation, destruction & move
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T_TextureSampler( );
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T_TextureSampler(
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__rw__ T_TextureSampler&& other ) noexcept;
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T_TextureSampler& operator=(
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__rw__ T_TextureSampler&& other ) noexcept;
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~T_TextureSampler( );
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// --------------------------------------------------------------------
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// Configuration
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T_TextureSampler& sampling(
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__rd__ const E_TexSampling mode );
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T_TextureSampler& noMipmap( );
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T_TextureSampler& mipmap(
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__rd__ const E_TexSampling mode );
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T_TextureSampler& wrap(
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__rd__ const E_TexWrap mode );
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T_TextureSampler& lod(
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__rd__ const float min ,
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__rd__ const float max );
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// --------------------------------------------------------------------
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// Usage
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GLuint id( ) const noexcept { return id_; }
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// unused
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void bind( __rd__ const GLuint unit )
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{ glBindSampler( unit , id_ ); }
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private:
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void setSamplingMode( ) const;
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GLuint id_ = 0;
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E_TexSampling sampling_ = E_TexSampling::NEAREST;
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E_TexSampling lodSampling_ = E_TexSampling::NEAREST;
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bool hasLOD_ = false;
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};
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struct T_TextureManager
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{
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static constexpr uint32_t MaxUnits = 8;
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T_TextureManager( );
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NO_COPY( T_TextureManager );
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NO_MOVE( T_TextureManager );
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void reset( );
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T_TextureSampler const* sampler(
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__rd__ std::string const& name ) const;
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void bind( __rd__ const uint32_t unit ,
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__rd__ T_Texture const& texture );
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void bind( __rd__ const uint32_t unit ,
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__rd__ T_Texture const& texture ,
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__rd__ T_TextureSampler const& sampler );
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private:
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struct T_Binding_
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{
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GLuint texture = 0;
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GLuint sampler = 0;
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};
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std::map< std::string , std::shared_ptr< T_TextureSampler > > samplers_;
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T_Binding_ bindings_[ MaxUnits ];
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};
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