Function RenderToSavePic

source/core/rendering/hw_entrypoint.cpp:259–294

}

void RenderToSavePic(FRenderViewpoint& vp, FileWriter* file, int width, int height)
{
	IntRect bounds;
	bounds.left = 0;
	bounds.top = 0;
	bounds.width = width;
	bounds.height = height;
	auto& RenderState = *screen->RenderState();

	// we must be sure the GPU finished reading from the buffer before we fill it with new data.
	screen->WaitForCommands(false);

	// Switch to render buffers dimensioned for the savepic
	screen->SetSaveBuffers(true);
	screen->ImageTransitionScene(true);

	RenderState.SetVertexBuffer(screen->mVertexData);
	screen->mVertexData->Reset();
	screen->mLights->Clear();
	screen->mViewpoints->Clear();

	twodpsp.Clear();

	RenderViewpoint(vp, &bounds, vp.FieldOfView.Degrees(), 1.333f, 1.333f, true, false);


	int numpixels = width * height;
	TArray<uint8_t> scr(numpixels * 3, true);
	screen->CopyScreenToBuffer(width, height, scr.Data());

	DoWriteSavePic(file, scr.Data(), width, height, screen->FlipSavePic());

	// Switch back the screen render buffers
	screen->SetViewportRects(nullptr);
	screen->SetSaveBuffers(false);
}

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