Differential D10221 Diff 33199 source/blender/blenkernel/intern/anim_sys.c

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source/blender/blenkernel/intern/anim_sys.c

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	return true;	return true;
	}	}

	/* Blend the specified snapshots into the target, and free the input snapshots. */
	static void nlaeval_snapshot_mix_and_free(NlaEvalData *nlaeval,
	NlaEvalSnapshot *out,
	NlaEvalSnapshot *in1,
	NlaEvalSnapshot *in2,
	float alpha)
	{
	BLI_assert(in1->base == out && in2->base == out);

	nlaeval_snapshot_ensure_size(out, nlaeval->num_channels);

	for (int i = 0; i < nlaeval->num_channels; i++) {
	NlaEvalChannelSnapshot *c_in1 = nlaeval_snapshot_get(in1, i);
	NlaEvalChannelSnapshot *c_in2 = nlaeval_snapshot_get(in2, i);

	if (c_in1 \|\| c_in2) {
	NlaEvalChannelSnapshot *c_out = out->channels[i];

	/* Steal the entry from one of the input snapshots. */
	if (c_out == NULL) {
	if (c_in1 != NULL) {
	c_out = c_in1;
	in1->channels[i] = NULL;
	}
	else {
	c_out = c_in2;
	in2->channels[i] = NULL;
	}
	}

	if (c_in1 == NULL) {
	c_in1 = nlaeval_snapshot_find_channel(in1->base, c_out->channel);
	}
	if (c_in2 == NULL) {
	c_in2 = nlaeval_snapshot_find_channel(in2->base, c_out->channel);
	}

	out->channels[i] = c_out;

	for (int j = 0; j < c_out->length; j++) {
	c_out->values[j] = c_in1->values[j] * (1.0f - alpha) + c_in2->values[j] * alpha;
	}
	}
	}

	nlaeval_snapshot_free_data(in1);
	nlaeval_snapshot_free_data(in2);
	}

	/* ---------------------- */	/* ---------------------- */
	/* F-Modifier stack joining/separation utilities -	/* F-Modifier stack joining/separation utilities -
	* should we generalize these for BLI_listbase.h interface? */	* should we generalize these for BLI_listbase.h interface? */
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	nlastrip_evaluate(	nlastrip_evaluate(
	ptr, channels, &tmp_modifiers, &tmp_nes, &snapshot2, anim_eval_context, flush_to_original);	ptr, channels, &tmp_modifiers, &tmp_nes, &snapshot2, anim_eval_context, flush_to_original);

	/* accumulate temp-buffer and full-buffer, using the 'real' strip */	/** Replace \a snapshot2 NULL channels with base or default values so all channels blend. */
	nlaeval_snapshot_mix_and_free(channels, snapshot, &snapshot1, &snapshot2, nes->strip_time);	nlasnapshot_ensure_channels(channels, &snapshot2);
		nlasnapshot_blend(
		channels, &snapshot1, &snapshot2, NLASTRIP_MODE_REPLACE, nes->strip_time, snapshot);

		nlaeval_snapshot_free_data(&snapshot1);
		nlaeval_snapshot_free_data(&snapshot2);

	/* unlink this strip's modifiers from the parent's modifiers again */	/* unlink this strip's modifiers from the parent's modifiers again */
	nlaeval_fmodifiers_split_stacks(&nes->strip->modifiers, modifiers);	nlaeval_fmodifiers_split_stacks(&nes->strip->modifiers, modifiers);
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	/* ---------------------- */	/* ---------------------- */

		void nlasnapshot_ensure_channels(NlaEvalData eval_data, NlaEvalSnapshot snapshot)
		{
		LISTBASE_FOREACH (NlaEvalChannel *, nec, &eval_data->channels) {
		nlaeval_snapshot_ensure_channel(snapshot, nec);
		}
		}

	/** Blends the \a lower_snapshot with the \a upper_snapshot into \a r_blended_snapshot according	/** Blends the \a lower_snapshot with the \a upper_snapshot into \a r_blended_snapshot according
	* to the given \a upper_blendmode and \a upper_influence. */	* to the given \a upper_blendmode and \a upper_influence. */
	void nlasnapshot_blend(NlaEvalData *eval_data,	void nlasnapshot_blend(NlaEvalData *eval_data,
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