initial commit

glsl_ext.h

@@ -0,0 +1,36 @@
+
+#define RHANDLER(name, args, ...)                            \
+    ({ void _handler(const char* name, void** args) __VA_ARGS__ _handler; })
+
+struct request_handler {
+    const char* name;
+    /*
+      handler format:
+      'i' - signed integer (void* -> int*)
+      'f' - float (void* -> float*)
+      's' - string (void* -> const char*)
+      'b' - bool (void* -> bool*)
+      
+      example:
+
+      .fmt = "sii" // takes a string, and then two integers
+      .fmt = "ffb" // takes two floats, then a boolean
+     */
+    const char* fmt;
+    void (*handler)(const char* name, void** args);
+};
+
+struct glsl_ext {
+    char*        processed;  /* OUT: null terminated processed source                       */
+    size_t       p_len;      /* OUT: length of processed buffer, excluding null char        */
+    const char*  source;     /* IN: raw data passed via ext_process                         */
+    size_t source_len;       /* IN: raw source len */
+    const char*  cd;         /* IN: current directory                                       */
+
+    /* IN: NULL (where the last element's 'name' member is NULL) terminated
+       array of request handlers */
+    struct request_handler* handlers;
+};
+
+void ext_process(struct glsl_ext* ext, const char* f);
+void ext_free   (struct glsl_ext* ext);