void
SDL_DXGIGetOutputInfo( int displayIndex, int *adapterIndex, int *outputIndex )
{
void *pDXGIDLL;
IDXGIFactory *pDXGIFactory;
*adapterIndex = -1;
*outputIndex = -1;
if (!DXGI_LoadDLL(&pDXGIDLL, &pDXGIFactory)) {
SDL_SetError("Unable to create DXGI interface");
} else {
SDL_DisplayData *pData = (SDL_DisplayData *)SDL_GetDisplayDriverData(displayIndex);
if (!pData) {
SDL_SetError("Invalid display index");
} else {
char *displayName = WIN_StringToUTF8(pData->DeviceName);
int nAdapter = 0, nOutput = 0;
IDXGIAdapter* pDXGIAdapter;
while ( *adapterIndex == -1 && IDXGIFactory_EnumAdapters(pDXGIFactory, nAdapter, &pDXGIAdapter) != DXGI_ERROR_NOT_FOUND ) {
IDXGIOutput* pDXGIOutput;
while ( *adapterIndex == -1 && IDXGIAdapter_EnumOutputs(pDXGIAdapter, nOutput, &pDXGIOutput) != DXGI_ERROR_NOT_FOUND ) {
DXGI_OUTPUT_DESC outputDesc;
if (SUCCEEDED(IDXGIOutput_GetDesc(pDXGIOutput, &outputDesc))) {
char *outputName = WIN_StringToUTF8(outputDesc.DeviceName);
if(!SDL_strcmp(outputName, displayName)) {
*adapterIndex = nAdapter;
*outputIndex = nOutput;
}
SDL_free( outputName );
}
IDXGIOutput_Release( pDXGIOutput );
nOutput++;
}
IDXGIAdapter_Release( pDXGIAdapter );
nAdapter++;
}
SDL_free(displayName);
}
/* free up the D3D stuff we inited */
IDXGIFactory_AddRef( pDXGIFactory );
SDL_UnloadObject(pDXGIDLL);
}
}
SDL_bool
SDL_DXGIGetOutputInfo(int displayIndex, int *adapterIndex, int *outputIndex)
{
#if !HAVE_DXGI_H
if (adapterIndex) *adapterIndex = -1;
if (outputIndex) *outputIndex = -1;
SDL_SetError("SDL was compiled without DXGI support due to missing dxgi.h header");
return SDL_FALSE;
#else
SDL_DisplayData *pData = (SDL_DisplayData *)SDL_GetDisplayDriverData(displayIndex);
void *pDXGIDLL;
char *displayName;
int nAdapter, nOutput;
IDXGIFactory *pDXGIFactory;
IDXGIAdapter *pDXGIAdapter;
IDXGIOutput* pDXGIOutput;
if (!adapterIndex) {
SDL_InvalidParamError("adapterIndex");
return SDL_FALSE;
}
if (!outputIndex) {
SDL_InvalidParamError("outputIndex");
return SDL_FALSE;
}
*adapterIndex = -1;
*outputIndex = -1;
if (!pData) {
SDL_SetError("Invalid display index");
return SDL_FALSE;
}
if (!DXGI_LoadDLL(&pDXGIDLL, &pDXGIFactory)) {
SDL_SetError("Unable to create DXGI interface");
return SDL_FALSE;
}
displayName = WIN_StringToUTF8(pData->DeviceName);
nAdapter = 0;
while (*adapterIndex == -1 && SUCCEEDED(IDXGIFactory_EnumAdapters(pDXGIFactory, nAdapter, &pDXGIAdapter))) {
nOutput = 0;
while (*adapterIndex == -1 && SUCCEEDED(IDXGIAdapter_EnumOutputs(pDXGIAdapter, nOutput, &pDXGIOutput))) {
DXGI_OUTPUT_DESC outputDesc;
if (SUCCEEDED(IDXGIOutput_GetDesc(pDXGIOutput, &outputDesc))) {
char *outputName = WIN_StringToUTF8(outputDesc.DeviceName);
if (SDL_strcmp(outputName, displayName) == 0) {
*adapterIndex = nAdapter;
*outputIndex = nOutput;
}
SDL_free(outputName);
}
IDXGIOutput_Release(pDXGIOutput);
nOutput++;
}
IDXGIAdapter_Release(pDXGIAdapter);
nAdapter++;
}
SDL_free(displayName);
/* free up the DXGI factory */
IDXGIFactory_Release(pDXGIFactory);
SDL_UnloadObject(pDXGIDLL);
if (*adapterIndex == -1) {
return SDL_FALSE;
} else {
return SDL_TRUE;
}
#endif
}