pandory500/SDL-mirror
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Fixed clip rectangle calculation when there is a viewport offset

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This commit is contained in:
Sam Lantinga 2015-05-28 18:57:10 -07:00
parent 2a4efa3b11
commit d727fa668a
5 changed files with 57 additions and 14 deletions
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12
src/render/direct3d11/SDL_render_d3d11.c
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@ -1356,7 +1356,7 @@ D3D11_GetRotationForCurrentRenderTarget(SDL_Renderer * renderer)
}
static int
D3D11_GetViewportAlignedD3DRect(SDL_Renderer * renderer, const SDL_Rect * sdlRect, D3D11_RECT * outRect)
D3D11_GetViewportAlignedD3DRect(SDL_Renderer * renderer, const SDL_Rect * sdlRect, D3D11_RECT * outRect, BOOL includeViewportOffset)
{
D3D11_RenderData *data = (D3D11_RenderData *) renderer->driverdata;
const int rotation = D3D11_GetRotationForCurrentRenderTarget(renderer);
@ -1366,6 +1366,12 @@ D3D11_GetViewportAlignedD3DRect(SDL_Renderer * renderer, const SDL_Rect * sdlRec
outRect->right = sdlRect->x + sdlRect->w;
outRect->top = sdlRect->y;
outRect->bottom = sdlRect->y + sdlRect->h;
if (includeViewportOffset) {
outRect->left += renderer->viewport.x;
outRect->right += renderer->viewport.x;
outRect->top += renderer->viewport.y;
outRect->bottom += renderer->viewport.y;
}
break;
case DXGI_MODE_ROTATION_ROTATE270:
outRect->left = sdlRect->y;
@ -2280,7 +2286,7 @@ D3D11_UpdateClipRect(SDL_Renderer * renderer)
ID3D11DeviceContext_RSSetScissorRects(data->d3dContext, 0, NULL);
} else {
D3D11_RECT scissorRect;
if (D3D11_GetViewportAlignedD3DRect(renderer, &renderer->clip_rect, &scissorRect) != 0) {
if (D3D11_GetViewportAlignedD3DRect(renderer, &renderer->clip_rect, &scissorRect, TRUE) != 0) {
/* D3D11_GetViewportAlignedD3DRect will have set the SDL error */
return -1;
}
@ -2869,7 +2875,7 @@ D3D11_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
}
/* Copy the desired portion of the back buffer to the staging texture: */
if (D3D11_GetViewportAlignedD3DRect(renderer, rect, &srcRect) != 0) {
if (D3D11_GetViewportAlignedD3DRect(renderer, rect, &srcRect, FALSE) != 0) {
/* D3D11_GetViewportAlignedD3DRect will have set the SDL error */
goto done;
}