So I have separated my texture rendering methods in another file and have run into a problem hence the title name.

#main.d
----------

void render()
{
SDL_RenderClear(renderTarget);
renderSprite(renderTarget);
SDL_RenderPresent(renderTarget);
}
----------
#other_file.d
-----------
void renderSprite(SDL_Renderer _renderTarget)
{

SDL_Texture texture = SDL_CreateTextureFromSurface(_renderTarget, IMG_Load("image.png"));

SDL_RenderCopy(_renderTarget,texture, null,null);
}
----------

Error: cannot implicitly convert expression (null) of type typeof(null) to SDL_Rect
Error: cannot implicitly convert expression (null) of type typeof(null) to SDL_Rect

=====================
But when I do this:

#main.d
-------------------

void render()
{
SDL_RenderClear(renderTarget);
SDL_RenderCopy(renderTarget,texture,null,null);
SDL_RenderPresent(renderTarget);
}
--------------------

It works with no problem. I've DerelictSDL2.load and SDL_Init already.
So is this a bug or am I doing something wrong here?

On Thursday, 24 December 2015 at 09:41:39 UTC, Jack wrote:
> So I have separated my texture rendering methods in another file and have run into a problem hence the title name.
>
> #main.d
> ----------
>
> void render()
> {
> SDL_RenderClear(renderTarget);
> renderSprite(renderTarget);
> SDL_RenderPresent(renderTarget);
> }
> ----------
> #other_file.d
> -----------
> void renderSprite(SDL_Renderer _renderTarget)
> {
>
> SDL_Texture texture = SDL_CreateTextureFromSurface(_renderTarget, IMG_Load("image.png"));
>
> SDL_RenderCopy(_renderTarget,texture, null,null);
> }
> ----------
>
> Error: cannot implicitly convert expression (null) of type typeof(null) to SDL_Rect
> Error: cannot implicitly convert expression (null) of type typeof(null) to SDL_Rect
>
> =====================
> But when I do this:
>
> #main.d
> -------------------
>
> void render()
> {
> SDL_RenderClear(renderTarget);
> SDL_RenderCopy(renderTarget,texture,null,null);
> SDL_RenderPresent(renderTarget);
> }
> --------------------
>
> It works with no problem. I've DerelictSDL2.load and SDL_Init already.
> So is this a bug or am I doing something wrong here?

You need a pointer to renderTarget.


#other_file.d

---------------------
module my.sdl.project;

import derelict.sdl2.sdl;
import derelict.sdl2.image;


void renderSprite(SDL_Renderer* _renderTarget)
{
    SDL_Texture* texture = SDL_CreateTextureFromSurface(_renderTarget, IMG_Load("image.png"));
    SDL_RenderCopy(_renderTarget,texture, null,null);
}
---------------

#main.d
-----------

import my.sdl.project;
//...
-----------

On Thursday, 24 December 2015 at 10:42:57 UTC, Lucien wrote:
> On Thursday, 24 December 2015 at 09:41:39 UTC, Jack wrote:
>> [...]
>
> You need a pointer to renderTarget.
>
>
> #other_file.d
>
> ---------------------
> module my.sdl.project;
>
> import derelict.sdl2.sdl;
> import derelict.sdl2.image;
>
>
> void renderSprite(SDL_Renderer* _renderTarget)
> {
>     SDL_Texture* texture = SDL_CreateTextureFromSurface(_renderTarget, IMG_Load("image.png"));
>     SDL_RenderCopy(_renderTarget,texture, null,null);
> }
> ---------------
>
> #main.d
> -----------
>
> import my.sdl.project;
> //...
> -----------

I actually have a pointer in the original project but I seem to forgot it when I'm typing this example. Sorry bout the misunderstanding, but yeah problem still stands.

On Thursday, 24 December 2015 at 11:32:24 UTC, Jack wrote:
> On Thursday, 24 December 2015 at 10:42:57 UTC, Lucien wrote:
>> On Thursday, 24 December 2015 at 09:41:39 UTC, Jack wrote:
>>> [...]
>>
>> You need a pointer to renderTarget.
>>
>>
>> #other_file.d
>>
>> ---------------------
>> module my.sdl.project;
>>
>> import derelict.sdl2.sdl;
>> import derelict.sdl2.image;
>>
>>
>> void renderSprite(SDL_Renderer* _renderTarget)
>> {
>>     SDL_Texture* texture = SDL_CreateTextureFromSurface(_renderTarget, IMG_Load("image.png"));
>>     SDL_RenderCopy(_renderTarget,texture, null,null);
>> }
>> ---------------
>>
>> #main.d
>> -----------
>>
>> import my.sdl.project;
>> //...
>> -----------
>
> I actually have a pointer in the original project but I seem to forgot it when I'm typing this example. Sorry bout the misunderstanding, but yeah problem still stands.

I can't help you without your original code.

On Thursday, 24 December 2015 at 12:42:11 UTC, Lucien wrote:
> On Thursday, 24 December 2015 at 11:32:24 UTC, Jack wrote:
>> On Thursday, 24 December 2015 at 10:42:57 UTC, Lucien wrote:
>>> [...]
>>
>> I actually have a pointer in the original project but I seem to forgot it when I'm typing this example. Sorry bout the misunderstanding, but yeah problem still stands.
>
> I can't help you without your original code.

I think I fixed it. I was initializing SDL_Rects to nulls inside some of the arguments. It was a slight case of Spaghetti Code.
Oh well, thank you for your time.