enricobuehler
4c3b11445c
Phase 0 of design/pyrowave-codec-plan.md — the opt-in wired-LAN ultra-low- latency codec. Vendored at upstream 509e4f88 (API 0.4.0, Granite 44362775, volk + vulkan-headers pins in PUNKTFUNK-VENDOR.txt), pruned to the 6.6 MB the standalone no-renderer build needs; scripts/vendor-pyrowave.sh reproduces the tree (a pin bump is protocol-affecting, plan §4.2). build.rs drives the wrapper CMakeLists (static archives incl. a static C-API lib upstream only ships shared) + bindgen over pyrowave.h; Linux and Windows only, empty stub elsewhere (Apple gets a native Metal port, §4.7). Offline-safe by construction: no network, no system lib, vendored Vulkan headers — same model as the opus dep (flatpak builder has no network). Phase-0 validation on .21 (RTX 5070 Ti, driver 610.43.03): - upstream pyrowave-c-test + interop test (incl. dmabuf/DRM-modifier Vulkan<->Vulkan) pass, from the pristine AND the pruned tree - GPU kernel times at ~1.6 bpp noise: encode/decode 0.090/0.042 ms @800p, 0.146/0.067 @1080p, 0.226/0.103 @1440p, 0.477/0.201 @4K — order of magnitude under NVENC's 1-2 ms retrieve, CBR lands within ~100 B of target - cargo test -p pyrowave-sys green (static link + API-version pin check) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
61 lines
1.6 KiB
GLSL
61 lines
1.6 KiB
GLSL
#version 450
|
|
|
|
#if DELTA
|
|
layout(set = 0, binding = 0) uniform texture2D Y0;
|
|
layout(set = 0, binding = 1) uniform texture2D Y1;
|
|
#else
|
|
layout(set = 0, binding = 0) uniform texture2D Y;
|
|
layout(set = 0, binding = 1) uniform texture2D Cb;
|
|
layout(set = 0, binding = 2) uniform texture2D Cr;
|
|
#endif
|
|
layout(set = 0, binding = 3) uniform sampler Samp;
|
|
|
|
layout(location = 0) out vec3 FragColor;
|
|
layout(location = 0) in vec2 vUV;
|
|
|
|
layout(constant_id = 0) const bool BT2020 = false;
|
|
layout(constant_id = 1) const bool FullRange = false;
|
|
|
|
const mat3 yuv2rgb_bt709 = mat3(
|
|
vec3(1.0, 1.0, 1.0),
|
|
vec3(0.0, -0.13397432 / 0.7152, 1.8556),
|
|
vec3(1.5748, -0.33480248 / 0.7152, 0.0));
|
|
|
|
const mat3 yuv2rgb_bt2020 = mat3(
|
|
vec3(1.0, 1.0, 1.0),
|
|
vec3(0.0, -0.202008 / 0.587, 1.772),
|
|
vec3(1.402, -0.419198 / 0.587, 0.0));
|
|
|
|
void main()
|
|
{
|
|
#if DELTA
|
|
float y0 = textureLod(sampler2D(Y0, Samp), vUV, 0.0).x;
|
|
float y1 = textureLod(sampler2D(Y1, Samp), vUV, 0.0).x;
|
|
FragColor = vec3(abs(y0 - y1) * 10.0);
|
|
#else
|
|
float y = textureLod(sampler2D(Y, Samp), vUV, 0.0).x;
|
|
float cb = textureLod(sampler2D(Cb, Samp), vUV, 0.0).x;
|
|
float cr = textureLod(sampler2D(Cr, Samp), vUV, 0.0).x;
|
|
|
|
cb -= 0.5;
|
|
cr -= 0.5;
|
|
|
|
if (!FullRange)
|
|
{
|
|
y -= 16.0 / 255.0;
|
|
y *= 255.0 / 219.0;
|
|
const float ChromaScale = 255.0 / 224.0;
|
|
cb *= ChromaScale;
|
|
cr *= ChromaScale;
|
|
y = clamp(y, 0.0, 1.0);
|
|
cb = clamp(cb, -0.5, 0.5);
|
|
cr = clamp(cr, -0.5, 0.5);
|
|
}
|
|
|
|
if (BT2020)
|
|
FragColor = yuv2rgb_bt2020 * vec3(y, cb, cr);
|
|
else
|
|
FragColor = yuv2rgb_bt709 * vec3(y, cb, cr);
|
|
#endif
|
|
}
|