Function sampleTextureBilinear

src/rendering/raster_rendering_engine.cpp:902–924

        }

        [[nodiscard]] glm::vec4 sampleTextureBilinear(const lfs::core::TextureImage& image,
                                                      float u,
                                                      float v) {
            if (image.width <= 0 || image.height <= 0 || image.channels <= 0 || image.pixels.empty()) {
                return glm::vec4(1.0f);
            }

            u -= std::floor(u);
            v -= std::floor(v);

            const float x = u * static_cast<float>(image.width - 1);
            const float y = v * static_cast<float>(image.height - 1);
            const int x0 = std::clamp(static_cast<int>(std::floor(x)), 0, image.width - 1);
            const int y0 = std::clamp(static_cast<int>(std::floor(y)), 0, image.height - 1);
            const int x1 = (x0 + 1) % image.width;
            const int y1 = (y0 + 1) % image.height;
            const float tx = x - static_cast<float>(x0);
            const float ty = y - static_cast<float>(y0);

            const glm::vec4 top = glm::mix(fetchTexel(image, x0, y0), fetchTexel(image, x1, y0), tx);
            const glm::vec4 bottom = glm::mix(fetchTexel(image, x0, y1), fetchTexel(image, x1, y1), tx);
            return glm::mix(top, bottom, ty);
        }

        [[nodiscard]] const lfs::core::Material& meshMaterialOrDefault(
            const lfs::core::MeshData& mesh,