Stride.Core.Shader

Shader source code manipulation library. With it, you can:

HLSL to GLSL

It can convert HLSL code to various GLSL dialect, including Core, ES 2.0, ES 3.0+ and Vulkan.

Feature	Status
Vertex & Pixel Shaders	✔
Geometry Shaders	✘
Tessellation Shaders	✘
Compute Shaders	✘
Standard intrinsics	✔ except: noise
SM5 intrinsics	✘ missing: dst, ddx_coarse, ddx_fine, ddy_coarse, ddy_fine, firstbithigh, firstbitlow, countbits, f16tof32, f32tof16, fma, mad, msad4, rcp, reversebits
Registers	✔ simple remapping
Constant Buffer Offsets & Packing	✘ cbuffer follow GLSL rules
Barriers intrinsics	✘ (no Compute Shaders)
Interlocked intrinsics	✘ (no Compute Shaders)
Shared variables & memory	✘ (no Compute Shaders)
Integer reinterpret intrinsics	✘ asuint, asint
Flow statements	✔ except: errorf, printf, abort
Texture objects	✔
Buffer objects	✔
Class/struct methods	✘
Preprocessor	✔
Remap VS projected coordinates	✔
Multiple Render Targets	✔
Constant Buffers	✔
StructuredBuffer and RWStructuredBuffer	✘
RWBuffer and RWTexture	✘
#extension directives	✘ not generated

By default, it generates "combined" samplers:

Texture2D texture;
SamplerState sampler;

texture.Sample(texture, sampler);

will generate a single sampler2D texture_sampler

There is also a mode to generate separate texture/samplers for platforms that support it (i.e. Vulkan).

Small type inference issue with Texture object, happens when doing texture.Sample().r, where it doesn't resolve generics type properly
Preprocessor seems to first concat then replace defines, which makes such patterns fail:

#define REGISTER_INDEX 1
#define REGISTER_EXPR b ## REGISTER_INDEX
cbuffer A : register(REGISTER_EXPR)