debug: add a new debug flag to log VBO usage

src/arrays.cpp

@@ -794,6 +794,8 @@ OgxArrayReader *_ogx_array_add(uint8_t attribute, const OgxVertexAttribArray *ar
         /* No conversions needed, just dump the data from the array directly
          * into the GX pipe. */
         if (array->vbo) {
+            debug(OGX_LOG_VBO, "Using VBO %d for attr %d type %d, n=%d",
+                  array->vbo, info.format.attribute, info.format.size, array->size);
             new (reader) DirectVboReader(array->vbo, info.format, data, stride);
             return reader;
         }

src/debug.c

@@ -46,6 +46,7 @@ static const struct {
     { "texture", OGX_LOG_TEXTURE },
     { "stencil", OGX_LOG_STENCIL },
     { "shader", OGX_LOG_SHADER },
+    { "vbo", OGX_LOG_VBO },
     { NULL, 0 },
 };
 

src/debug.h

@@ -44,6 +44,7 @@ typedef enum {
     OGX_LOG_STENCIL = 1 << 4,
     OGX_LOG_CLIPPING = 1 << 5,
     OGX_LOG_SHADER = 1 << 6,
+    OGX_LOG_VBO = 1 << 7,
 } OgxLogMask;
 
 extern OgxLogMask _ogx_log_mask;