From 14bd7d061fbf2783b0239d645c97d1c1e1c18e8f Mon Sep 17 00:00:00 2001
From: ArthasMenethil <dinobot92t@gmail.com>
Date: Tue, 20 Feb 2024 20:24:05 +0700
Subject: [PATCH] Fix shader cache with transform feedback on some android
 devices

(cherry picked from commit d31d3e503e2a0b5719f6de57b2b350ed7b4160a0)
---
 drivers/gles3/shader_gles3.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gles3/shader_gles3.cpp b/drivers/gles3/shader_gles3.cpp
index e1a9588d87d..241fb231d7e 100644
--- a/drivers/gles3/shader_gles3.cpp
+++ b/drivers/gles3/shader_gles3.cpp
@@ -584,6 +584,19 @@ bool ShaderGLES3::_load_from_cache(Version *p_version) {
 			Version::Specialization specialization;
 
 			specialization.id = glCreateProgram();
+			if (feedback_count) {
+				Vector<const char *> feedback;
+				for (int feedback_index = 0; feedback_index < feedback_count; feedback_index++) {
+					if (feedbacks[feedback_index].specialization == 0 || (feedbacks[feedback_index].specialization & specialization_key)) {
+						// Specialization for this feedback is enabled.
+						feedback.push_back(feedbacks[feedback_index].name);
+					}
+				}
+
+				if (!feedback.is_empty()) {
+					glTransformFeedbackVaryings(specialization.id, feedback.size(), feedback.ptr(), GL_INTERLEAVED_ATTRIBS);
+				}
+			}
 			glProgramBinary(specialization.id, variant_format, variant_bytes.ptr(), variant_bytes.size());
 
 			GLint link_status = 0;