Shader reloading implemented

1 files changed, 24 insertions, 0 deletions

diff --git a/src/shader_sys.c b/src/shader_sys.c
index cd8de3e..180bdef 100644
--- a/src/shader_sys.c
+++ b/src/shader_sys.c
@@ -81,11 +81,15 @@ vertex_err:
 }
 
 static Shader shader_slots[MAX_SHADER_SIZE] = {0};
+static long shader_modtimes[MAX_SHADER_SIZE] = {0};
+static const char* shader_paths[MAX_SHADER_SIZE] = {0};
 
 void init_shader_sys(void)
 {
 	for(int i = 0; i < MAX_SHADER_SIZE; ++i){
         shader_slots[i] = (Shader){0};
+		shader_modtimes[i] = BLANK_DEFAULT;
+		shader_paths[i] = NULL;
     }
 }
 
@@ -96,6 +100,8 @@ int load_new_shader(const char* path)
         if(shader_slots[i].id <= 0){
             current_idx = i;
             shader_slots[current_idx] = load_joined_shader(path);
+			shader_modtimes[current_idx] = GetFileModTime(path);
+			shader_paths[current_idx] = path;
             break;
         }
     }
@@ -114,6 +120,22 @@ void set_active_shader(int idx)
 		BeginShaderMode(shader_slots[idx]);
 }
 
+void update_shaders(void)
+{
+    for(int i = 0; i < MAX_SHADER_SIZE; ++i){
+        if(shader_slots[i].id > 0){
+            long current_mod = GetFileModTime(shader_paths[i]);
+            
+            if(current_mod != shader_modtimes[i]){
+                shader_modtimes[i] = current_mod;
+                
+                UnloadShader(shader_slots[i]);
+                shader_slots[i] = load_joined_shader(shader_paths[i]);
+            }
+        }
+    }
+}
+
 void reset_active_shader(void)
 {
 	EndShaderMode();
@@ -128,6 +150,8 @@ void unload_shader(int idx)
 	
 	UnloadShader(shader_slots[idx]);
 	shader_slots[idx] = (Shader){0};
+	shader_modtimes[idx] = BLANK_DEFAULT;
+	shader_paths[idx] = NULL;
 }
 
 void unload_active_shaders(void)