Raise buf_vbo limits to avoid flushing early.

src/pc/gfx/gfx_pc.c

@@ -78,7 +78,7 @@ typedef union {
 #define RATIO_X (gfx_current_dimensions.width / (2.0f * HALF_SCREEN_WIDTH))
 #define RATIO_Y (gfx_current_dimensions.height / (2.0f * HALF_SCREEN_HEIGHT))
 
-#define MAX_BUFFERED 256
+#define MAX_BUFFERED 2048
 #define MAX_LIGHTS 2
 #define MAX_VERTICES 64
 
@@ -1052,6 +1052,7 @@ static void gfx_sp_tri1(uint8_t vtx1_idx, uint8_t vtx2_idx, uint8_t vtx3_idx) {
         buf_vbo[buf_vbo_len++] = color->a / 255.0f;*/
     }
     if (++buf_vbo_num_tris == MAX_BUFFERED) {
+        printf("Vertex buffer overflow!\n");
         gfx_flush();
     }
 }