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AMD Barycentric Shader Extension Sample

This sample shows how to use the GCN shader extensions for D3D11 to access the barycentric intrinsic instruction in an HLSL pixel shader.

Prerequisites

• AMD Radeon™ GCN-based GPU (HD 7000 series or newer)
• 64-bit Windows® 10
• Visual Studio® 2019
• Radeon Software Crimson Edition 16.9.1 (driver version 16.40) or later

Sample Overview

This sample renders a triangle zooming in and out. The triangle uses a checker board texture modulated by the barycentric coordinates as RGB colors.

Points of Interest

• This sample uses a driver extension to enable the use of instrinsic instructions.
  • The driver extension is accessed through the AMD GPU Services (AGS) library.
  • For more information on AGS, including samples, visit the AGS SDK repository: https://github.com/GPUOpen-LibrariesAndSDKs/AGS_SDK
• The shader compiler should not use the D3DCOMPILE_SKIP_OPTIMIZATION option, otherwise it will not work.
• Other instrinsics are also available.

Attribution

• AMD, the AMD Arrow logo, Radeon, and combinations thereof are either registered trademarks or trademarks of Advanced Micro Devices, Inc. in the United States and/or other countries.
• Microsoft, Direct3D, DirectX, Visual Studio, and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.