From 32eb03771062d385ce76e32bad9305dfcf671247 Mon Sep 17 00:00:00 2001
From: klemek <klemek.dev@proton.me>
Date: Sun, 28 Sep 2025 16:33:50 +0200
Subject: [PATCH] fix shared context with fixed-size memory units

---
 src/args.c    |  5 +++++
 src/config.h  |  6 +++++-
 src/shaders.c |  9 ++++++++-
 src/types.h   | 12 ++++++------
 4 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/src/args.c b/src/args.c
index fb73808..8aeba60 100644
--- a/src/args.c
+++ b/src/args.c
@@ -122,6 +122,11 @@ Parameters args_parse(int argc, char **argv) {
         invalid_value(arg, value);
       }
     } else if (is_arg(arg, "-v") || is_arg(arg, "--video-in")) {
+      if (params.video_in_count == MAX_VIDEO) {
+        log_error("maximum video input reached");
+        exit(EXIT_FAILURE);
+      }
+
       params.video_in[params.video_in_count++] = value;
     } else if (is_arg(arg, "-vs") || is_arg(arg, "--video-size")) {
       params.video_size = parse_uint(arg, value);
diff --git a/src/config.h b/src/config.h
index cbf934f..03b0cb3 100644
--- a/src/config.h
+++ b/src/config.h
@@ -10,7 +10,11 @@
 #endif /* VERSION */
 
 #ifndef MAX_VIDEO
-#define MAX_VIDEO 256
+#define MAX_VIDEO 16
+#endif
+
+#ifndef MAX_FRAG
+#define MAX_FRAG 64
 #endif
 
 #endif /* CONFIG_H */
\ No newline at end of file
diff --git a/src/shaders.c b/src/shaders.c
index 1226d74..7a19c4e 100644
--- a/src/shaders.c
+++ b/src/shaders.c
@@ -4,6 +4,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "config.h"
 #include "config_file.h"
 #include "constants.h"
 #include "shaders.h"
@@ -377,7 +378,7 @@ ShaderProgram shaders_init(File *fragment_shaders, ConfigFile config,
     program.last_width = context->width;
     program.last_height = context->height;
     program.tex_count = config_file_get_int(config, "TEX_COUNT", 9);
-    program.frag_count = config_file_get_int(config, "FRAG_COUNT", 6);
+    program.frag_count = config_file_get_int(config, "FRAG_COUNT", 10);
     program.frag_output_index =
         config_file_get_int(config, "FRAG_OUTPUT", 1) - 1;
     program.frag_monitor_index =
@@ -387,6 +388,12 @@ ShaderProgram shaders_init(File *fragment_shaders, ConfigFile config,
         config_file_get_int(config, "SUB_VARIANT_COUNT", 0);
     program.in_count = config_file_get_int(config, "IN_COUNT", 0);
 
+    if (program.frag_count > MAX_FRAG) {
+      log_error("FRAG_COUNT over %d", MAX_FRAG);
+      program.error = true;
+      return program;
+    }
+
     init_gl(&program);
 
     init_shaders(&program, fragment_shaders);
diff --git a/src/types.h b/src/types.h
index 89a1a03..c2467f4 100644
--- a/src/types.h
+++ b/src/types.h
@@ -125,14 +125,14 @@ typedef struct SharedContext {
   double time;
   unsigned int fps;
   float tempo;
-  unsigned int sub_state[256]; // TODO
+  unsigned int sub_state[MAX_FRAG * MAX_FRAG];
   bool demo;
-  unsigned int seeds[256];
+  unsigned int seeds[MAX_FRAG];
   bool monitor;
-  unsigned int input_widths[256];
-  unsigned int input_heights[256];
-  unsigned int input_formats[256];
-  unsigned int input_fps[256];
+  unsigned int input_widths[MAX_VIDEO];
+  unsigned int input_heights[MAX_VIDEO];
+  unsigned int input_formats[MAX_VIDEO];
+  unsigned int input_fps[MAX_VIDEO];
   bool stop;
 } SharedContext;