54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
#include <psemek/gfx/texture.hpp>
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#include <optional>
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namespace psemek::gfx
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{
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template struct basic_texture<1, gl::TEXTURE_1D>;
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template struct basic_texture<2, gl::TEXTURE_1D_ARRAY>;
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template struct basic_texture<2, gl::TEXTURE_2D>;
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template struct basic_texture<3, gl::TEXTURE_2D_ARRAY>;
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template struct basic_texture<3, gl::TEXTURE_3D>;
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template struct basic_texture<2, gl::TEXTURE_CUBE_MAP>;
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namespace detail
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{
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static std::optional<float> get_max_anisotropy()
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{
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if (!gl::exts::var_EXT_texture_filter_anisotropic) return std::nullopt;
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float level;
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gl::GetFloatv(gl::MAX_TEXTURE_MAX_ANISOTROPY_EXT, &level);
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return level;
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}
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std::optional<float> max_anisotropy()
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{
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static std::optional<float> level = get_max_anisotropy();
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return level;
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}
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}
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void texture_cubemap::load(int f, GLint internal_format, geom::vector<std::size_t, 2> const & size, GLenum format, GLenum type, const void * data)
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{
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bind();
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gl::TexImage2D(face_to_gl(f), 0, internal_format, size[0], size[1], 0, format, type, data);
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size_ = size;
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}
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void texture_cubemap::pixels(int f, GLenum format, GLenum type, void * data) const
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{
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bind();
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gl::GetTexImage(face_to_gl(f), 0, format, type, data);
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}
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GLenum texture_cubemap::face_to_gl(int f)
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{
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return gl::TEXTURE_CUBE_MAP_POSITIVE_X + f;
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}
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}
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