static int ddraw_create_surfaces(win_window_info *window)
{
dd_info *dd = window->drawdata;
HRESULT result;
// make a description of the primary surface
memset(&dd->primarydesc, 0, sizeof(dd->primarydesc));
dd->primarydesc.dwSize = sizeof(dd->primarydesc);
dd->primarydesc.dwFlags = DDSD_CAPS;
dd->primarydesc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
// for triple-buffered full screen mode, allocate flipping surfaces
if (window->fullscreen && video_config.triplebuf)
{
dd->primarydesc.dwFlags |= DDSD_BACKBUFFERCOUNT;
dd->primarydesc.ddsCaps.dwCaps |= DDSCAPS_FLIP | DDSCAPS_COMPLEX;
dd->primarydesc.dwBackBufferCount = 2;
}
// create the primary surface and report errors
result = create_surface(dd, &dd->primarydesc, &dd->primary, "primary");
if (result != DD_OK) goto error;
// full screen mode: get the back surface
dd->back = NULL;
if (window->fullscreen && video_config.triplebuf)
{
DDSCAPS2 caps = { DDSCAPS_BACKBUFFER };
result = IDirectDrawSurface7_GetAttachedSurface(dd->primary, &caps, &dd->back);
if (result != DD_OK)
{
mame_printf_verbose("DirectDraw: Error %08X getting attached back surface\n", (int)result);
goto error;
}
}
// now make a description of our blit surface, based on the primary surface
if (dd->blitwidth == 0 || dd->blitheight == 0)
compute_blit_surface_size(window);
dd->blitdesc = dd->primarydesc;
dd->blitdesc.dwFlags = DDSD_WIDTH | DDSD_HEIGHT | DDSD_PIXELFORMAT | DDSD_CAPS;
dd->blitdesc.dwWidth = dd->blitwidth;
dd->blitdesc.dwHeight = dd->blitheight;
dd->blitdesc.ddsCaps.dwCaps = DDSCAPS_VIDEOMEMORY;
// then create the blit surface, fall back to system memory if video mem doesn't work
result = create_surface(dd, &dd->blitdesc, &dd->blit, "blit");
if (result != DD_OK)
{
dd->blitdesc.ddsCaps.dwCaps = DDSCAPS_SYSTEMMEMORY;
result = create_surface(dd, &dd->blitdesc, &dd->blit, "blit");
}
if (result != DD_OK) goto error;
// create a memory buffer for offscreen drawing
if (dd->membuffersize < dd->blitwidth * dd->blitheight * 4)
{
dd->membuffersize = dd->blitwidth * dd->blitheight * 4;
dd->membuffer = realloc(dd->membuffer, dd->membuffersize);
}
if (dd->membuffer == NULL)
goto error;
#ifdef MESS
// create a clipper for all modes, since MESS has dialogs
if (create_clipper(window))
goto error;
#else
// create a clipper for windowed mode
if (!window->fullscreen && create_clipper(window))
goto error;
#endif
// full screen mode: set the gamma
if (window->fullscreen)
{
// only set the gamma if it's not 1.0f
float brightness = options_get_float(mame_options(), WINOPTION_FULLSCREENBRIGHTNESS);
float contrast = options_get_float(mame_options(), WINOPTION_FULLLSCREENCONTRAST);
float gamma = options_get_float(mame_options(), WINOPTION_FULLSCREENGAMMA);
if (brightness != 1.0f || contrast != 1.0f || gamma != 1.0f)
{
// see if we can get a GammaControl object
result = IDirectDrawSurface_QueryInterface(dd->primary, &IID_IDirectDrawGammaControl, (void **)&dd->gamma);
if (result != DD_OK)
{
mame_printf_warning("DirectDraw: Warning - device does not support full screen gamma correction.\n");
dd->gamma = NULL;
}
// proceed if we can
if (dd->gamma != NULL)
{
DDGAMMARAMP ramp;
int i;
// create a standard ramp and set it
for (i = 0; i < 256; i++)
ramp.red[i] = ramp.green[i] = ramp.blue[i] = apply_brightness_contrast_gamma(i, brightness, contrast, gamma) << 8;
// attempt to set it
result = IDirectDrawGammaControl_SetGammaRamp(dd->gamma, 0, &ramp);
if (result != DD_OK)
mame_printf_verbose("DirectDraw: Error %08X attempting to set gamma correction.\n", (int)result);
}
}
}
// force some updates
update_outer_rects(dd);
return 0;
error:
ddraw_delete_surfaces(window);
return 1;
}
int renderer_dd::ddraw_create_surfaces()
{
HRESULT result;
// make a description of the primary surface
memset(&primarydesc, 0, sizeof(primarydesc));
primarydesc.dwSize = sizeof(primarydesc);
primarydesc.dwFlags = DDSD_CAPS;
primarydesc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
// for triple-buffered full screen mode, allocate flipping surfaces
if (window().fullscreen() && video_config.triplebuf)
{
primarydesc.dwFlags |= DDSD_BACKBUFFERCOUNT;
primarydesc.ddsCaps.dwCaps |= DDSCAPS_FLIP | DDSCAPS_COMPLEX;
primarydesc.dwBackBufferCount = 2;
}
// create the primary surface and report errors
result = create_surface(&primarydesc, &primary, "primary");
if (result != DD_OK) goto error;
// full screen mode: get the back surface
back = NULL;
if (window().fullscreen() && video_config.triplebuf)
{
DDSCAPS2 caps = { DDSCAPS_BACKBUFFER };
result = IDirectDrawSurface7_GetAttachedSurface(primary, &caps, &back);
if (result != DD_OK)
{
osd_printf_verbose("DirectDraw: Error %08X getting attached back surface\n", (int)result);
goto error;
}
}
// now make a description of our blit surface, based on the primary surface
if (blitwidth == 0 || blitheight == 0)
compute_blit_surface_size();
blitdesc = primarydesc;
blitdesc.dwFlags = DDSD_WIDTH | DDSD_HEIGHT | DDSD_PIXELFORMAT | DDSD_CAPS;
blitdesc.dwWidth = blitwidth;
blitdesc.dwHeight = blitheight;
blitdesc.ddsCaps.dwCaps = DDSCAPS_VIDEOMEMORY;
// then create the blit surface, fall back to system memory if video mem doesn't work
result = create_surface(&blitdesc, &blit, "blit");
if (result != DD_OK)
{
blitdesc.ddsCaps.dwCaps = DDSCAPS_SYSTEMMEMORY;
result = create_surface(&blitdesc, &blit, "blit");
}
if (result != DD_OK) goto error;
// create a memory buffer for offscreen drawing
if (membuffersize < blitwidth * blitheight * 4)
{
membuffersize = blitwidth * blitheight * 4;
global_free_array(membuffer);
membuffer = global_alloc_array_nothrow(UINT8, membuffersize);
}
if (membuffer == NULL)
goto error;
// create a clipper for windowed mode
if (!window().fullscreen() && create_clipper())
goto error;
// full screen mode: set the gamma
if (window().fullscreen())
{
// only set the gamma if it's not 1.0f
windows_options &options = downcast<windows_options &>(window().machine().options());
float brightness = options.full_screen_brightness();
float contrast = options.full_screen_contrast();
float fgamma = options.full_screen_gamma();
if (brightness != 1.0f || contrast != 1.0f || fgamma != 1.0f)
{
// see if we can get a GammaControl object
result = IDirectDrawSurface_QueryInterface(primary, WRAP_REFIID(IID_IDirectDrawGammaControl), (void **)&gamma);
if (result != DD_OK)
{
osd_printf_warning("DirectDraw: Warning - device does not support full screen gamma correction.\n");
this->gamma = NULL;
}
// proceed if we can
if (this->gamma != NULL)
{
DDGAMMARAMP ramp;
int i;
// create a standard ramp and set it
for (i = 0; i < 256; i++)
ramp.red[i] = ramp.green[i] = ramp.blue[i] = apply_brightness_contrast_gamma(i, brightness, contrast, fgamma) << 8;
// attempt to set it
result = IDirectDrawGammaControl_SetGammaRamp(this->gamma, 0, &ramp);
if (result != DD_OK)
osd_printf_verbose("DirectDraw: Error %08X attempting to set gamma correction.\n", (int)result);
}
}
}
// force some updates
update_outer_rects();
return 0;
error:
ddraw_delete_surfaces();
return 1;
}