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Add gfx memory usage utilities

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This commit is contained in:
Nikita Lisitsa 2023-02-26 20:44:29 +03:00
parent 6d5a01921c
commit 696ed71090
5 changed files with 103 additions and 0 deletions
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6
libs/gfx/include/psemek/gfx/buffer.hpp
View file

@ -180,4 +180,10 @@ namespace psemek::gfx
using buffer = basic_buffer<gl::ARRAY_BUFFER>;
using uniform_buffer = basic_buffer<gl::UNIFORM_BUFFER>;
template <GLenum Target>
std::size_t memory_usage(basic_buffer<Target> const & buffer)
{
return buffer.size();
}
}

5
libs/gfx/include/psemek/gfx/mesh.hpp
View file

@ -363,4 +363,9 @@ namespace psemek::gfx
imported_mesh load_mesh(std::string_view data);
inline std::size_t memory_usage(mesh const & mesh)
{
return memory_usage(mesh.vertex_buffer()) + memory_usage(mesh.index_buffer()) + memory_usage(mesh.instance_buffer());
}
}

2
libs/gfx/include/psemek/gfx/pixel.hpp
View file

@ -453,4 +453,6 @@ namespace psemek::gfx
static constexpr GLenum type = gl::UNSIGNED_BYTE;
};
std::size_t pixel_size(GLint internal_format);
}

14
libs/gfx/include/psemek/gfx/texture.hpp
View file

@ -37,6 +37,8 @@ namespace psemek::gfx
void bind() const;
void bind(int texture_unit) const;
GLint internal_format() const { return format_; }
geom::vector<std::size_t, D> size() const { return size_; }
std::size_t width() const;
@ -82,6 +84,7 @@ namespace psemek::gfx
protected:
GLuint id_ = 0;
GLint format_ = 0;
geom::vector<std::size_t, D> size_ = geom::vector<std::size_t, D>::zero();
explicit basic_texture(std::nullptr_t);
@ -250,9 +253,11 @@ namespace psemek::gfx
template <std::size_t D, GLenum Target>
basic_texture<D, Target>::basic_texture(basic_texture && other)
: id_{other.id_}
, format_{other.format_}
, size_{other.size_}
{
other.id_ = 0;
other.format_ = 0;
other.size_ = other.size_.zero();
}
@ -263,6 +268,7 @@ namespace psemek::gfx
reset();
std::swap(id_, other.id_);
std::swap(format_, other.format_);
std::swap(size_, other.size_);
return *this;
}
@ -285,6 +291,7 @@ namespace psemek::gfx
if (id_ != 0)
gl::DeleteTextures(1, &id_);
id_ = 0;
format_ = 0;
size_ = size_.zero();
}
@ -351,6 +358,7 @@ namespace psemek::gfx
gl::TexImage3D(Target, 0, internal_format, size[0], size[1], size[2], 0, format, type, data);
}
format_ = internal_format;
size_ = size;
}
@ -598,4 +606,10 @@ namespace psemek::gfx
return result;
}
template <std::size_t D, GLenum Target>
std::size_t memory_usage(basic_texture<D, Target> const & texture)
{
return texture.width() * texture.height() * texture.depth() * pixel_size(texture.internal_format());
}
}

76
libs/gfx/source/pixel.cpp Normal file
View file

@ -0,0 +1,76 @@
#include <psemek/gfx/pixel.hpp>
#include <psemek/util/to_string.hpp>
namespace psemek::gfx
{
std::size_t pixel_size(GLint internal_format)
{
switch (internal_format)
{
case gl::RGBA32F: return 16;
case gl::RGBA32I: return 16;
case gl::RGBA32UI: return 16;
case gl::RGBA16: return 8;
case gl::RGBA16F: return 8;
case gl::RGBA16I: return 8;
case gl::RGBA16UI: return 8;
case gl::RGBA8: return 4;
case gl::RGBA8UI: return 4;
case gl::SRGB8_ALPHA8: return 4;
case gl::RGB10_A2: return 4;
case gl::RGB10_A2UI: return 4;
case gl::R11F_G11F_B10F: return 4;
case gl::RG32F: return 8;
case gl::RG32I: return 8;
case gl::RG32UI: return 8;
case gl::RG16: return 4;
case gl::RG16F: return 4;
case gl::RGB16I: return 4;
case gl::RGB16UI: return 4;
case gl::RG8: return 2;
case gl::RG8I: return 2;
case gl::RG8UI: return 2;
case gl::R32F: return 4;
case gl::R32I: return 4;
case gl::R32UI: return 4;
case gl::R16F: return 2;
case gl::R16I: return 2;
case gl::R16UI: return 2;
case gl::R8: return 1;
case gl::R8I: return 1;
case gl::R8UI: return 1;
case gl::RGBA16_SNORM: return 8;
case gl::RGBA8_SNORM: return 4;
case gl::RGB32F: return 12;
case gl::RGB32I: return 12;
case gl::RGB32UI: return 12;
case gl::RGB16_SNORM: return 6;
case gl::RGB16F: return 6;
case gl::RGB16: return 6;
case gl::RGB8_SNORM: return 3;
case gl::RGB8: return 3;
case gl::RGB8I: return 3;
case gl::RGB8UI: return 3;
case gl::SRGB8: return 3;
case gl::RGB9_E5: return 4;
case gl::RG16_SNORM: return 4;
case gl::RG8_SNORM: return 2;
case gl::R16_SNORM: return 2;
case gl::R8_SNORM: return 1;
case gl::DEPTH_COMPONENT32F: return 4;
case gl::DEPTH_COMPONENT24: return 3;
case gl::DEPTH_COMPONENT16: return 2;
case gl::DEPTH32F_STENCIL8: return 5;
case gl::DEPTH24_STENCIL8: return 4;
// Assume uncompressed size as an upper bound
case gl::COMPRESSED_RG_RGTC2: return 2;
case gl::COMPRESSED_SIGNED_RG_RGTC2: return 2;
case gl::COMPRESSED_RED_RGTC1: return 1;
case gl::COMPRESSED_SIGNED_RED_RGTC1: return 1;
};
throw std::runtime_error(util::to_string("unknown pixel format: 0x", std::hex, internal_format));
}
}