SDL_CreateSoftwareRenderer behaves strangely

SDL Development
1

Hello

I had a question, do we have to do something special when using a renderer created with
Code:
SDL_CreateSoftwareRenderer

because in my code when I use render created with
Code:
SDL_CreateRenderer

every thing is drawing great but when using
Code:
SDL_CreateSoftwareRenderer

some draw command do not have any effet one the surface whyle other are working great here is what I did

I used
Code:
SDL_CreateSoftwareRenderer

to creat a renderer which renders to a surface and then I display that surface (or use it) which is in fact the window surface. (I need a surface for some reason…).

The rendering is then made in a loop :

Code:

    SDL_SetRenderDrawColor(gRenderer, 0XFF, 0XFF, 0X00, 0XFF);
	SDL_RenderClear(gRenderer);
	SDL_SetRenderDrawColor(gRenderer, 0X0F, 0X00, 0XF0, 0XFF);
	SDL_SetRenderDrawColor(gRenderer, 0X0F, 0X00, 0XF0, 0XFF);
	SDL_Rect rect;
	rect.x = 0;
	rect.y = 5;
	rect.w = 10;
	rect.h = 2;
	SDL_RenderFillRect(gRenderer, &rect);
	std::cout << "begin" << std::endl;

	for (auto& i : zIndexOrder) {
		//Rectangles[i]->get_x();
		Rectangles[i]->updat_move_fnct();
		if (Rectangles[i]->everyframe_fct != NULL)Rectangles[i]->everyframe_fct(Rectangles[i]);
		//Rectangles[i]->index_th = i;
	}
	for (auto u : Underwindows)u->Refresh();

	for (auto& i : zIndexOrder)Rectangles[i]->draw(this);
	
	
	SDL_SetRenderDrawColor(gRenderer, 0X0F, 0X00, 0XF0, 0XFF);
	rect.x = 0;
	rect.y = 5;
	rect.w = 5;
	rect.h = 5;
	SDL_RenderFillRect(gRenderer, &rect);

	std::cout << "true RENDERER " << gRenderer << std::endl;

    if (SOFTWARE_RENDERING) SDL_UpdateWindowSurface(gWindow);
	else SDL_RenderPresent(gRenderer);

The two rectangle drawn here with
Code:
SDL_RenderFillRect(gRenderer, &rect);

draw fine but, in
Code:
ectangles[i]->draw(this);

If I make the same call It doesn’t work I mean I call

Code:
SDL_SetRenderDrawColor(f->get_screen_render(), 0X0F, 0X00, 0XF0, 0XFF);
SDL_Rect rect;
rect.x = 6;
rect.y = 5;
rect.w = 10;
rect.h = 55;
SDL_RenderFillRect(f->get_screen_render(), &rect);

in
Code:
rectangles[i]->draw(this);

and the rectangle doesn’t draw.

notice that the three rectangles are from different size to see the differences, the clear color is not the same as the draw color,
Code:
f->get_screen_render()

gives the same pointer to the renderer as the one in the two other call , and this part of the code is execute (I know this thanks to the console), and finally it executes between the two other draw. Note that those 3 rectangles ar only debug rectangle to show my problem but rectangle are drown on over parts.

I wonder why everything works with render created with
Code:
SDL_CreateRenderer

and not with
Code:
SDL_CreateSoftwareRenderer

Thank you

2

Code:

if (SOFTWARE_RENDERING) SDL_UpdateWindowSurface(gWindow);
else SDL_RenderPresent(gRenderer);

Without full source code, hard to understand what is going on but I guess the above code might be the problem. If you draw with a renderer, SW or not, you should call SDL_RenderPresent.