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Fix CRT shader: replace fract() with 1-arg wrapper for OpenCL 1.x

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OpenCL 1.x fract() requires 2 arguments; the single-argument form
is OpenCL 2.0+. Replace all usages with crt_fract(x) = x - floor(x).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
mani
2026-02-26 01:28:54 +01:00
parent 1325603fd0
commit f63a22e65e
1 changed files with 10 additions and 7 deletions
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17
Jellyfin.Server/Resources/Shaders/crt_lottes.cl
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@@ -13,6 +13,9 @@
// Kernel signature: (src_y, src_uv, dst_y, dst_uv)
// FFmpeg program_opencl passes one image2d_t per plane in plane order.
// fract() requires 2 arguments in OpenCL 1.x; define a 1-arg wrapper.
#define crt_fract(x) ((x) - floor(x))
// ── Parameters ────────────────────────────────────────────────────────────────
#ifndef HARD_SCAN
#define HARD_SCAN (-8.0f)
@@ -99,7 +102,7 @@ static float gauss1d(float pos, float scale)
static float2 distance_to_texel(float2 pos, float2 src_size)
{
return -1.0f * fract(pos * src_size - 0.5f);
return -1.0f * crt_fract(pos * src_size - 0.5f);
}
// ── Horizontal reconstruction (3 / 5 / 7 tap) ────────────────────────────────
@@ -233,23 +236,23 @@ static float3 apply_mask(float2 px)
#if SHADOW_MASK == 1
float line = MASK_LIGHT;
float odd = (fract(px.x / 6.0f) < 0.5f) ? 1.0f : 0.0f;
if (fract((px.y + odd) / 2.0f) < 0.5f) line = MASK_DARK;
float mx = fract(px.x / 3.0f);
float odd = (crt_fract(px.x / 6.0f) < 0.5f) ? 1.0f : 0.0f;
if (crt_fract((px.y + odd) / 2.0f) < 0.5f) line = MASK_DARK;
float mx = crt_fract(px.x / 3.0f);
if (mx < 1.0f / 3.0f) m.x = MASK_LIGHT;
else if (mx < 2.0f / 3.0f) m.y = MASK_LIGHT;
else m.z = MASK_LIGHT;
m *= line;
#elif SHADOW_MASK == 2
float mx2 = fract(px.x / 3.0f);
float mx2 = crt_fract(px.x / 3.0f);
if (mx2 < 1.0f / 3.0f) m.x = MASK_LIGHT;
else if (mx2 < 2.0f / 3.0f) m.y = MASK_LIGHT;
else m.z = MASK_LIGHT;
#elif SHADOW_MASK == 3
px.x += px.y * 3.0f;
float mx3 = fract(px.x / 6.0f);
float mx3 = crt_fract(px.x / 6.0f);
if (mx3 < 1.0f / 3.0f) m.x = MASK_LIGHT;
else if (mx3 < 2.0f / 3.0f) m.y = MASK_LIGHT;
else m.z = MASK_LIGHT;
@@ -257,7 +260,7 @@ static float3 apply_mask(float2 px)
#elif SHADOW_MASK == 4
px = floor(px * (float2)(1.0f, 0.5f));
px.x += px.y * 3.0f;
float mx4 = fract(px.x / 6.0f);
float mx4 = crt_fract(px.x / 6.0f);
if (mx4 < 1.0f / 3.0f) m.x = MASK_LIGHT;
else if (mx4 < 2.0f / 3.0f) m.y = MASK_LIGHT;
else m.z = MASK_LIGHT;