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overscan (feature for SDL_RenderSetLogicalSize): Fix to ignore overscan hint when using the Direct3D 9 backend.

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D39 does not support negative viewport values which the current implementation relies on.
D3D11 does support negative viewport values so that will continue working.
Refer to Bug 2799.
This commit is contained in:
Eric Wing 2016-04-04 19:25:24 -07:00
parent d77a55738b
commit bb3cb4f42a
1 changed files with 10 additions and 1 deletions
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9
src/render/SDL_render.c
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@ -1153,7 +1153,16 @@ UpdateLogicalSize(SDL_Renderer *renderer)
if (!hint) {
scale_policy = 0;
} else if ( *hint == '1' || SDL_strcasecmp(hint, "overscan") == 0) {
/* Unfortunately, Direct3D 9 does't support negative viewport numbers
which the main overscan implementation relies on.
D3D11 does support negative values and uses a different id string
so overscan will work for D3D11.
*/
if(SDL_strcasecmp("direct3d", SDL_GetCurrentVideoDriver())) {
scale_policy = 0;
} else {
scale_policy = 1;
}
} else {
scale_policy = 0;
}