TextureBuffer()

MayaFlux::Buffers::TextureBuffer::TextureBuffer	(	uint32_t	width,
		uint32_t	height,
		Portal::Graphics::ImageFormat	format,
		const void *	initial_pixel_data = nullptr
	)

Create texture buffer with dimensions.

Parameters

width	Texture width in pixels
height	Texture height in pixels
format	Pixel format
initial_pixel_data	Optional initial pixel data (nullptr = uninitialized)

The VKBuffer itself contains fullscreen quad vertices. The texture pixels are stored separately and uploaded to VKImage.

Definition at line 45 of file TextureBuffer.cpp.

    : VKBuffer(
          calculate_quad_vertex_size(),
          Usage::VERTEX,
          Kakshya::DataModality::IMAGE_COLOR)
    , m_width(width)
    , m_height(height)
    , m_format(format)
{
    RenderConfig default_config;
    default_config.vertex_shader = "texture.vert.spv";
    default_config.fragment_shader = "texture.frag.spv";
    if (format == Portal::Graphics::ImageFormat::R8) {
        default_config.fragment_shader = "texture_gray.frag.spv";
    } else if (format == Portal::Graphics::ImageFormat::RG8) {
        default_config.fragment_shader = "texture_gray_alpha.frag.spv";
    }
    default_config.default_texture_binding = "texSampler";
    default_config.topology = Portal::Graphics::PrimitiveTopology::TRIANGLE_STRIP;
    set_default_render_config(default_config);
 
    if (initial_pixel_data) {
        size_t pixel_bytes = static_cast<size_t>(width) * height * Portal::Graphics::TextureLoom::get_bytes_per_pixel(format);
        m_pixel_data.resize(pixel_bytes);
        std::memcpy(m_pixel_data.data(), initial_pixel_data, pixel_bytes);
    }
 
    generate_default_quad();
 
    MF_INFO(Journal::Component::Buffers, Journal::Context::Init,
        "Created TextureBuffer: {}x{} ({} pixel bytes, {} vertex bytes)",
        m_width, m_height, m_pixel_data.size(), m_vertex_bytes.size());
}