anonymous_namespace{main.cpp}::MipLevel Struct Reference

Public Member Functions
mxvk::MXCOLOR	sample_bilinear (float u, float v, bool repeat_horizontal) const

Public Attributes
int	height = 0
std::vector< mxvk::MXCOLOR >	pixels
int	width = 0

Detailed Description

Definition at line 79 of file main.cpp.

Member Function Documentation

sample_bilinear()

mxvk::MXCOLOR anonymous_namespace{main.cpp}::MipLevel::sample_bilinear ( float u, float v, bool repeat_horizontal ) const

inlinenodiscard

Definition at line 84 of file main.cpp.

                                                                                                  {
            u = repeat_horizontal ? u - std::floor(u) : std::clamp(u, 0.0f, 1.0f);
            v = std::clamp(v, 0.0f, 1.0f);
            const float texture_x = u * static_cast<float>(repeat_horizontal ? width : width - 1);
            const float texture_y = v * static_cast<float>(height - 1);
            const int first_x = static_cast<int>(std::floor(texture_x));
            const int first_y = static_cast<int>(std::floor(texture_y));
            const int second_x = repeat_horizontal ? (first_x + 1) % width : std::min(first_x + 1, width - 1);
            const int second_y = std::min(first_y + 1, height - 1);
            const float x_fraction = texture_x - static_cast<float>(first_x);
            const float y_fraction = texture_y - static_cast<float>(first_y);
            const auto texel = [this](int x, int y) {
                return pixels[static_cast<std::size_t>(y) * static_cast<std::size_t>(width) + static_cast<std::size_t>(x)];
            };
            const mxvk::MXCOLOR top = interpolate_color(texel(first_x, first_y), texel(second_x, first_y), x_fraction);
            const mxvk::MXCOLOR bottom = interpolate_color(texel(first_x, second_y), texel(second_x, second_y), x_fraction);
            return interpolate_color(top, bottom, y_fraction);
        }

Member Data Documentation

height

int anonymous_namespace{main.cpp}::MipLevel::height = 0

Definition at line 81 of file main.cpp.

pixels

std::vector<mxvk::MXCOLOR> anonymous_namespace{main.cpp}::MipLevel::pixels

Definition at line 82 of file main.cpp.

width

int anonymous_namespace{main.cpp}::MipLevel::width = 0

Definition at line 80 of file main.cpp.

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The documentation for this struct was generated from the following file:

• examples/3dmath_plg_loader/main.cpp