image_ktx

KTX Texture Integration for Vulkan

Overview

This sample demonstrates KTX texture usage with nvpro_core helpers and post-process tonemapping in Vulkan.

Key Components

• TextureKtx Class: Handles texture creation and management
• Tonemapper: Implemented using TonemapperPostProcess class
  • Supports both compute and graphics pipeline approaches

Implementation Details

Texture Handling

• TextureKtx::create(ktximage) function manages texture and mipmap uploading
• Preserves original image format (e.g., sRGB)

Render Pipeline

1. Load default image
2. Create simple sphere scene
3. Generate Vulkan buffers for vertices and indices
4. Create pipeline with basic vertex and fragment shaders
5. Update camera matrices in m_frameInfo.buffer
6. Render scene
7. Apply post-process tonemapping

Vulkan Specifics

• Utilizes VK_KHR_PUSH_DESCRIPTOR_EXTENSION_NAME
• Fragment shader avoids gamma correction, deferring to tonemapper

Dependencies

• Zstandard Supercompression
• Basis Universal

Resources

• Khronos KTX
• KTX Specification
• NVIDIA Texture Tools Exporter
• KTX-Software

Build Configuration

_add_package_KTX()
target_link_libraries(${PROJECT_NAME} libzstd_static zlibstatic basisu)