131 lines
2.8 KiB
C++
131 lines
2.8 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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#ifndef PSEMEK_GLES
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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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#endif
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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::sys::ext_ARB_texture_filter_anisotropic()) return std::nullopt;
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float level;
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gl::GetFloatv(gl::MAX_TEXTURE_MAX_ANISOTROPY, &level);
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return level;
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return 0.f;
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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, math::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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#ifndef PSEMEK_GLES
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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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#endif
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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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#ifndef PSEMEK_GLES
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texture_2d_multisample::texture_2d_multisample()
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{
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gl::GenTextures(1, &id_);
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}
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texture_2d_multisample::texture_2d_multisample(texture_2d_multisample && other)
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: id_(other.id_)
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, size_(other.size_)
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, samples_(other.samples_)
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{
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other.id_ = 0;
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other.size_ = {0, 0};
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other.samples_ = 0;
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}
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texture_2d_multisample & texture_2d_multisample::operator = (texture_2d_multisample && other)
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{
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if (this != &other)
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{
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reset();
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id_ = other.id_;
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size_ = other.size_;
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samples_ = other.samples_;
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other.id_ = 0;
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other.size_ = {0, 0};
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other.samples_ = 0;
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}
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return *this;
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}
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texture_2d_multisample::~texture_2d_multisample()
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{
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reset();
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}
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texture_2d_multisample texture_2d_multisample::null()
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{
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return texture_2d_multisample(nullptr);
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}
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void texture_2d_multisample::reset()
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{
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gl::DeleteTextures(1, &id_);
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}
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void texture_2d_multisample::bind() const
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{
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gl::BindTexture(target, id_);
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}
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void texture_2d_multisample::bind(int texture_unit) const
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{
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gl::ActiveTexture(gl::TEXTURE0 + texture_unit);
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bind();
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}
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void texture_2d_multisample::load(GLint internal_format, math::vector<std::size_t, 2> const & size, int samples, bool fixed_sample_locations)
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{
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bind();
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gl::TexImage2DMultisample(target, samples, internal_format, size[0], size[1], fixed_sample_locations ? gl::TRUE : gl::FALSE);
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size_ = size;
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samples_ = samples;
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}
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texture_2d_multisample::texture_2d_multisample(std::nullptr_t)
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{}
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#endif
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}
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