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Implement multisample textures

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This commit is contained in:
Nikita Lisitsa 2022-11-30 17:33:17 +03:00
parent f8846e8c06
commit a758535700
2 changed files with 117 additions and 0 deletions
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49
libs/gfx/include/psemek/gfx/texture.hpp
View file

@ -159,6 +159,49 @@ namespace psemek::gfx
{}
};
struct texture_2d_multisample
{
texture_2d_multisample();
texture_2d_multisample(texture_2d_multisample &&);
texture_2d_multisample & operator = (texture_2d_multisample &&);
~texture_2d_multisample();
texture_2d_multisample(texture_2d_multisample const &) = delete;
texture_2d_multisample & operator = (texture_2d_multisample const &) = delete;
static texture_2d_multisample null();
static constexpr GLenum target = gl::TEXTURE_2D_MULTISAMPLE;
GLuint id() const { return id_; }
explicit operator bool() const { return id() != 0; }
void reset();
void bind() const;
void bind(int texture_unit) const;
geom::vector<std::size_t, 2> size() const { return size_; }
std::size_t width() const { return size_[0]; }
std::size_t height() const { return size_[1]; }
int samples() const { return samples_; }
void load(GLint internal_format, geom::vector<std::size_t, 2> const & size, int samples, bool fixed_sample_locations = true);
template <typename Pixel>
void load(geom::vector<std::size_t, 2> const & size, int samples, bool fixed_sample_locations = true);
protected:
GLuint id_ = 0;
geom::vector<std::size_t, 2> size_ = {0, 0};
int samples_ = 0;
explicit texture_2d_multisample(std::nullptr_t);
};
struct buffer_texture
{
buffer_texture();
@ -467,6 +510,12 @@ namespace psemek::gfx
basic_texture<D, Target>::basic_texture(std::nullptr_t)
{}
template <typename Pixel>
void texture_2d_multisample::load(geom::vector<std::size_t, 2> const & size, int samples, bool fixed_sample_locations)
{
load(pixel_traits<Pixel>::internal_format, size, samples, fixed_sample_locations);
}
inline buffer_texture::buffer_texture()
{
gl::GenTextures(1, &id_);

68
libs/gfx/source/texture.cpp
View file

@ -52,4 +52,72 @@ namespace psemek::gfx
return gl::TEXTURE_CUBE_MAP_POSITIVE_X + f;
}
texture_2d_multisample::texture_2d_multisample()
{
gl::GenTextures(1, &id_);
}
texture_2d_multisample::texture_2d_multisample(texture_2d_multisample && other)
: id_(other.id_)
, size_(other.size_)
, samples_(other.samples_)
{
other.id_ = 0;
other.size_ = {0, 0};
other.samples_ = 0;
}
texture_2d_multisample & texture_2d_multisample::operator = (texture_2d_multisample && other)
{
if (this != &other)
{
reset();
id_ = other.id_;
size_ = other.size_;
samples_ = other.samples_;
other.id_ = 0;
other.size_ = {0, 0};
other.samples_ = 0;
}
return *this;
}
texture_2d_multisample::~texture_2d_multisample()
{
reset();
}
texture_2d_multisample texture_2d_multisample::null()
{
return texture_2d_multisample(nullptr);
}
void texture_2d_multisample::reset()
{
gl::DeleteTextures(1, &id_);
}
void texture_2d_multisample::bind() const
{
gl::BindTexture(target, id_);
}
void texture_2d_multisample::bind(int texture_unit) const
{
gl::ActiveTexture(gl::TEXTURE0 + texture_unit);
bind();
}
void texture_2d_multisample::load(GLint internal_format, geom::vector<std::size_t, 2> const & size, int samples, bool fixed_sample_locations)
{
bind();
gl::TexImage2DMultisample(target, samples, internal_format, size[0], size[1], fixed_sample_locations ? gl::TRUE : gl::FALSE);
size_ = size;
samples_ = samples;
}
texture_2d_multisample::texture_2d_multisample(std::nullptr_t)
{}
}