From fee6238d33748e55d4bfabc658478ec603886a18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Foucault?= <foucault.clem@gmail.com>
Date: Wed, 15 Mar 2023 17:30:29 +0100
Subject: [PATCH] Fix #105323: Compositor: Crash when using color-ramp with
 b-spline

... or carnidal interpolation with only 2 color stops.

This was triggering an incorrect path due to missing optimisation cases.
Just fall back to the unoptimized case fixes the assert.
---
 .../nodes/composite/nodes/node_composite_val_to_rgb.cc        | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc b/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc
index 35a1261001a..be81362cc60 100644
--- a/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc
@@ -92,6 +92,10 @@ class ColorRampShaderNode : public ShaderNode {
                          GPU_uniform(&color_band->data[0].r),
                          GPU_uniform(&color_band->data[1].r));
           return;
+        case COLBAND_INTERP_B_SPLINE:
+        case COLBAND_INTERP_CARDINAL:
+          /* Not optimized yet. Fallback to gradient texture. */
+          break;
         default:
           BLI_assert_unreachable();
           return;