SDL2 direct3d renderer and Windows XP

SDL Development
1

Does the “direct3d” renderer still supports windows XP?

I’ve not seen notice anywhere that SDL dropped XP…

I’ve a minimal program that updates a texture in a loop that using both
mingw-w64 2.0.3 binaries from libsdl.org and with self compiled HG head
binaries does work with software renderer but does not with the default
accelerated one (direct3d), while it works perfectly on a wide range of
windows 7 machines (and linux removing outputdebugstring stuff). The
program is supposed to show a white line moving on a black background, in
windows XP it just displays a black window.

The code is here (excuse the indent but I tried to keep it small), maybe
it’s a problem with mingw64 build, can someone try to build it with visual
studio and check if it works?

#include “SDL.h”
#include “debugapi.h”

int SW=352, SH=288;

int main(int argc, char *argv[])
{
OutputDebugString(“Start!”);
if (SDL_Init(SDL_INIT_VIDEO)) { OutputDebugString(SDL_GetError());
return 0; }
SDL_Window *w = SDL_CreateWindow(“Test”, 100, 100, SW, SH,
SDL_WINDOW_RESIZABLE);
if (!w) { OutputDebugString(SDL_GetError()); return 0; }
SDL_Renderer r = SDL_CreateRenderer(w, -1,
SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC / WORKS replacing the
previous flags with SDL_RENDERER_SOFTWARE */);
if (!r) { OutputDebugString(SDL_GetError()); return 0; }

SDL_RendererInfo info;
SDL_GetRendererInfo(r, &info);
OutputDebugString(info.name);
SDL_Texture *t = SDL_CreateTexture(r, SDL_PIXELFORMAT_YV12,

SDL_TEXTUREACCESS_STATIC, SW, SH);
if (!t) { OutputDebugString(SDL_GetError()); return 0; }
Uint8 v = (Uint8)SDL_malloc(SW * SH * 3 / 2);
memset(v, 0, SW * SH * 3 / 2); memset(v + SW * SH, 127, SW * SH / 2);
Uint8 *y = v;
OutputDebugString(“Starting loop!”);

while(1) {
    SDL_Event e;
    while (SDL_PollEvent(&e)) {
        if ( (e.type == SDL_KEYUP && e.key.keysym.sym == SDLK_ESCAPE) ||
             (e.type == SDL_WINDOWEVENT && e.window.event ==

SDL_WINDOWEVENT_CLOSE)) {
OutputDebugString(“Quit!”);
SDL_Quit();
return 0;
}
}

    y += SW;
    memset(v, 0, SW * SH); memset(y, 255, SW * 50);

    if ((y + 50 * SW) >= (v + SW * SH)) y = v;

    SDL_UpdateYUVTexture(t, NULL, v, SW, v + (SW*SH), SW/2, v +

(SWSH5/4), SW/2);
SDL_RenderCopy(r, t, NULL, NULL);
SDL_RenderPresent®;
}
}–
Bye,
Gabry

2

2015-09-24 5:42 GMT-03:00, Gabriele Greco <gabriele.greco at darts.it>:

Does the “direct3d” renderer still supports windows XP?

Isn’t that the Direct3D 9 one? It should in that case if it isn’t
calling something new in the Windows API.

I’ve not seen notice anywhere that SDL dropped XP…

Yeah, although I wonder if anybody has checked that this is 100% the
case among SDL. I know that with the binaries I had used with Sol, it
would work even on Windows 98 with KernelEx as long as you stubbed two
more functions (AllocConsole and FreeConsole). Not sure if this is
still true in the custom 2.0.4 the final version shipped (yes, Sol is
using something between 2.0.3 and 2.0.4 :stuck_out_tongue: I needed that iBus support
on Linux!)

There’s also the question about whether it’s still worth supporting,
but then again the OpenGL 1.x fixed pipeline is still supported as
well as far as I know…

3

I’ve been developing completely under XP, and had no problems with SDL 2.0.3. Works like a dream.

When people stop supporting XP, it causes me problems, so please don’t neglect this awesome operating system.

4

I’ve been developing completely under XP, and had no problems with SDL
2.0.3. Works like a dream.

When people stop supporting XP, it causes me problems, so please don’t
neglect this awesome operating system.

Can you try if the provided code (in the original topic) on your system
shows a white line moving on a black window or not?

Maybe it’s only an issue in the shader with old video hardware and not an
OS problem.On Wed, Sep 30, 2015 at 12:22 AM, AntTheAlchemist wrote:

–
Bye,
Gabry