Ambiguous error codes - documentation?

CrazyAmphibian · July 5, 2022, 6:26am

is there a place where i can find what the error codes mean? it makes debugging rather difficult, because there’s not any good way to know why the code is erroring, only where.
i have a program that dynamically loads images, but is stubborn to change textures, only putting in the console “Failed to set texture data (-5)”.

britzl · July 5, 2022, 6:43am

The source code. Unfortunately we do not have it documented in any other place.

github.com

defold/defold/blob/dev/engine/gui/src/gui_script.cpp#L1869

    
      
              // since we will upload the data top-row first instead of bottom-row first.
              // This is actually what users expect the flip switch to mean, so we invert the
              // flip here so the default case will be to "correctly" flip the image.
              flip = !flip;
          
          
    dmImage::Type type = ToImageType(L, type_str);
              Result r = SetDynamicTextureData(scene, name, width, height, type, flip, buffer, buffer_size);
              if (r == RESULT_OK) {
                  lua_pushboolean(L, 1);
              } else {
                  dmLogWarning("Failed to set texture data (%d)", r);
                  lua_pushboolean(L, 0);
              }
          
          
    assert(top + 1 == lua_gettop(L));
              return 1;
          }
          
          
/*# gets the node font
           * This is only useful for text nodes. The font must be mapped to the gui scene in the gui editor.
           *

The error comes from a call to SetDynamicTextureData():

github.com

defold/defold/blob/dev/engine/gui/src/gui.cpp#L600

    
      
              t->m_Deleted = 1U;
          
          
    if (t->m_Buffer) {
                  free(t->m_Buffer);
                  t->m_Buffer = 0;
              }
          
          
    return RESULT_OK;
          }
          
          
Result SetDynamicTextureData(HScene scene, const dmhash_t texture_hash, uint32_t width, uint32_t height, dmImage::Type type, bool flip, const void* buffer, uint32_t buffer_size)
          {
              DynamicTexture*t = scene->m_DynamicTextures.Get(texture_hash);
          
          
    if (!t) {
                  return RESULT_RESOURCE_NOT_FOUND;
              }
          
          
    if (t->m_Deleted) {
                  dmLogError("Can't set texture data for deleted texture");
                  return RESULT_INVAL_ERROR;

And the constants are in gui.h:

github.com

defold/defold/blob/dev/engine/gui/src/dmsdk/gui/gui.h#L155

    
      
           * @member RESULT_INF_RECURSION //!< -8
           * @member RESULT_DATA_ERROR //!< -9
           * @member RESULT_WRONG_TYPE //!< -10
           */
          enum Result
          {
              RESULT_OK = 0,
              RESULT_SYNTAX_ERROR = -1,
              RESULT_SCRIPT_ERROR = -2,
              RESULT_OUT_OF_RESOURCES = -4,
              RESULT_RESOURCE_NOT_FOUND = -5,
              RESULT_TEXTURE_ALREADY_EXISTS = -6,
              RESULT_INVAL_ERROR = -7,
              RESULT_INF_RECURSION = -8,
              RESULT_DATA_ERROR = -9,
              RESULT_WRONG_TYPE = -10,
          };
          
          
/*#
           * @name NewNode
           * @param scene [type:dmGui::HScene] the gui scene

It seems like the texture you are using can’t be found, or something like that. Could you share the code you are using?

There’s an example here: Load texture

CrazyAmphibian · July 5, 2022, 6:59am

nevermind, this was caused by a typo in the texture name i was calling. m’s and n’s look a lot alike sometimes…
thank you for the help, though.

here’s the code, if you were still curious (annotated a bit for readability, too)

	local tex =image.load(images[programdata.selectedimage].data  ) --the data is the  contents of the image file.
	gui.new_texture("mimg", tex.width, tex.height, tex.type, tex.buffer)
	mimg=true --this is used for texture clean-up later, to make sure its there before deleting.
	gui.set_texture_data("mimg", tex.width, tex.height, tex.type, tex.buffer) --this is needed for the node to change its texture. deleting and making the texture does not work to swap textures for whatever reason. probably spaghetti code. (also where the typo was)
	gui.set_texture(imageobjects["image"], "mimg" )

anon95708182 · July 6, 2022, 7:08am

Sorry to bump in here,

I get an error that isn’t even in gui.h, -3, so must come from somewhere else. So far, I found one in resource.h: RESULT_RESOURCE_NOT_FOUND = -3

I try to load images into a slideshow:

Screenshot 2022-07-06 at 08.52.20

The path is right, clicking on the link in the error message opens the image.

These images are also textures of 3d models. The gui in question is an overlay, the 3d models still behind it. Maybe that’s a reason for the error? In a 2d version with just the gui the code works without problems. Trying to suss it out right now.

Mathias_Westerdahl · July 6, 2022, 7:18am

sys.load_resource is for loading custom resources .

Have you added your asset as a custom resource?

anon95708182 · July 6, 2022, 7:23am

Of course, I forgot to do this in the 3d project. Thank you very much for the super-speedy answer!